cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sharp nonzero lower bounds for the Schur product theorem
Creators: name: Khare, Apoorva
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Numerical Analysis (math.NA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 15B48, 47B10 (primary), 15A45, 42A82, 43A35, 46C05, 47A63 (secondary)

description: By a result of Schur [J. Reine Angew. Math. 1911], the entrywise product $M \circ N$ of two positive semidefinite matrices $M,N$ is again positive. Vybiral [Adv. Math. 2020] improved on this by showing the uniform lower bound $M \circ \overline{M} \geq E_n / n$ for all $n \times n$ real or complex correlation matrices $M$, where $E_n$ is the all-ones matrix. This was applied to settle a conjecture of Novak [J. Complexity 1999] and to positive definite functions on groups. Vybiral (in his original preprint) asked if one can obtain similar uniform lower bounds for higher entrywise powers of $M$, or for $M \circ N$ when $N \neq M, \overline{M}$. A natural third question is to obtain a tighter lower bound that need not vanish as $n \to \infty$, i.e. over infinite-dimensional Hilbert spaces. In this note, we affirmatively answer all three questions by extending and refining Vybiral's result to lower-bound $M \circ N$, for arbitrary complex positive semidefinite matrices $M, N$. Specifically: we provide tight lower bounds, improving on Vybiral's bounds. Second, our proof is 'conceptual' (and self-contained), providing a natural interpretation of these improved bounds via tracial Cauchy-Schwarz inequalities. Third, we extend our tight lower bounds to Hilbert-Schmidt operators. As an application, we settle Open Problem 1 of Hinrichs-Krieg-Novak-Vybiral [J. Complexity, in press], which yields improvements in the error bounds in certain tensor product (integration) problems.
description: 14 pages, no figures. Final version, to appear in Proceedings of the American Mathematical Society
Multiple Functionality in Nanotube Transistors
Creators: name: Leonard, F.
name: Tersoff, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Calculations of quantum transport in a carbon nanotube transistor show that such a device offers unique functionality. It can operate as a ballistic field-effect transistor, with excellent characteristics even when scaled to 10 nm dimensions. At larger gate voltages, channel inversion leads to resonant tunneling through an electrostatically defined nanoscale quantum dot. Thus the transistor becomes a gated resonant tunelling device, with negative differential resistance at a tunable threshold. For the dimensions considered here, the device operates in the Coulomb blockade regime, even at room temperature.
description: To appear in Phys. Rev. Lett
Dai diamanti non nasce niente, dal letame un gelsomino: il discorso sospeso di Utopia fra Via del campo di De André e la Bersabea di Calvino
Creators: name: Cannas, Andrea
Publisher: name: Medea
Year: 2021

description: Medea, No 1 (2019): LA BIBLIOTECA DI MEDEA - Dwelling. Interdisciplinary Approaches and New Perspectives
Hubbard chains network on corner-sharing tetrahedra: origin of the heavy fermion state in LiV_2O_4
Creators: name: Fujimoto, Satoshi
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the Hubbard chains network model defined on corner-sharing tetrahedra (the pyrochlore lattice) which is a possible microscopic model for the heavy fermion state of LiV_2O_4. Based upon this model, we can explain transport, magnetic, and thermodynamic properties of LiV_2O_4. We calculate the spin susceptibility, and the specific heat coefficient, exploiting the Bethe ansatz exact solution of the 1D Hubbard model and bosonization method. The results are quite consistent with experimental observations. We obtain the large specific heat coefficient $γ\sim 222 {\rm mJ/mol K^2}$.
description: 5 pages, 2 figures, a postscript file of Figure 1 is not included, to appear in Physical Review B
Additional file 1 of USP22 supports the aggressive behavior of basal-like breast cancer by stimulating cellular respiration
Creators: name: Prokakis, Evangelos
name: Bamahmoud, Husam
name: Jansari, Shaishavi
name: Fritsche, Lena
name: Dietz, Alexander
name: Boshnakovska, Angela
name: Rehling, Peter
name: Johnsen, Steven A.
name: Gallwas, Julia
name: Wegwitz, Florian
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Additional file 1.
The Value of Summary Statistics for Anomaly Detection in Temporally-Evolving Networks: A Performance Evaluation Study
Creators: name: Kodali, Lata
name: Sengupta, Srijan
name: House, Leanna
name: Woodall, William H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Network data has emerged as an active research area in statistics. Much of the focus of ongoing research has been on static networks that represent a single snapshot or aggregated historical data unchanging over time. However, most networks result from temporally-evolving systems that exhibit intrinsic dynamic behavior. Monitoring such temporally-varying networks to detect anomalous changes has applications in both social and physical sciences. In this work, we perform an evaluation study of summary statistics for anomaly detection in temporally-evolving networks by incorporating principles from statistical process monitoring. In contrast to previous studies, we deliberately incorporate temporal auto-correlation in our study. Other considerations in our comprehensive assessment include types and duration of anomaly, model type, and sparsity in temporally-evolving networks. We conclude that summary statistics can be valuable tools for network monitoring and often perform better than more complicated statistics.
description: 47 pages, 9 main figures, 17 main tables, 12 figures and tables in appendix
A fast optimal Latin hypercube design method using an improved translational propagation algorithm
Creators: name: Yibo Sun
name: Xiuyun Meng
name: Long, Teng
name: Yufei Wu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: To further improve the space-filling quality and computational efficiency of the translational propagation algorithm, especially for high-dimensional and large-scale sampling problems, this article presents an improved translational propagation algorithm (iTPA). First, a novel uniform translating process is proposed to better allocate sample points. Second, the resizing process is improved to relieve its adverse influence on the space-filling quality. Comparative studies demonstrate the appealing merits of iTPA: (i) iTPA generally outperforms the existing optimization-based Latin hypercube design (LHD) methods; (ii) for high-dimensional and large-scale sampling problems, the computational efficiency of iTPA is dramatically improved and insensitive to sampling dimension and scale; (iii) iterations of iTPA can be used to enrich available LHDs and further upgrade the space-filling quality. Finally, an engineering example is presented to demonstrate the benefit of iTPA in improving the accuracy of surrogates.
Cerocoma (Metacerocoma) schreberi Fabricius 1781
Creators: name: Turco, Federica
name: Bologna, Marco A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Meloidae
Cerocoma
Cerocoma schreberi

description: Cerocoma (Metacerocoma) schreberi Fabricius, 1781
Figs 2A, 3A, 4A, 5A, 6A
 Cerocoma schreberi Fabricius, 1781: 331; Reitter, 1913: 191; Mařan, 1944: 87.
 Cerocoma (Metacerocoma) schreberi, Kaszab, 1951: 261, 265, 271; Bologna, 1991: 163; Dvořák, 1993: 5.
 Type locality. “Europa australiori” (Fabricius 1781).
 Type specimens. We examined photographs of Fabricius’ types (one male and one female) preserved at ZMUC.
 Description. Male. Body metallic green with a short yellowish pubescence, denser on pronotum; abdomen orange with last two segments dark green metallic; antennae and mouthparts, including maxillary palpi, yelloworange; legs yellow-orange, except for meso- and metatarsomeres dark.
Head sub-squared with protruding eyes (Fig. 5A). Maxillary palpi modified with palpomeres II–III wide, flattened and distinctly curved; IV stout (about 2x as long as wide), weakly flattened and sinuate on both sides (Fig. 3A). Antennae strongly modified with antennomere I bearing a short and pointed protrusion on the external side and dorsal keel narrow and very high, apically fringed; II–VIII variously expanded and shaped; IV with a narrow, long and curved expansion on dorsal side; V with a long and narrow expansion on dorsal side; IX very swollen and transverse (Fig. 2A).
Pronotum elongate. Protibiae modified with a very high and flattened dorsal keel, apically curved (Fig. 4A). Protarsomeres dorso-ventrally flattened; I–IV widened on the external side; V angularly widened on the internal side.
Gonostyli, in lateral view, slightly curved, with apical lobes dorsally directed; apical lobes, in dorsal view, slightly swollen and converging. Apex of aedeagus rounded; aedeagal hooks subequal in size (the subapical slightly larger). Sclerotised hooks of endophallus small and distant from each other, equal in size, the apical one pointing outwards and the subapical backwards (Fig. 6A).
Female. Not distinctly modified. Refer to key for diagnostic characters.
 Distribution. Portugal, Spain, S France, Italy, S Germany, Czech Republic, Slovakia (possibly extinct in the last three countries), Austria, Hungary, Slovenia, Croatia, Bosnia-Hercegovina, Serbia, Montenegro, Albania, Macedonia, Bulgaria, Greece, Romania, Ukraine, S Russia, European and Asiatic Turkey, Syria, Israel-Palestine, Georgia, Azerbaijan, Kazakhstan, Turkmenistan, Uzbekistan, Kyrgyzstan, Tajikistan, Afghanistan, W China. Record from northwestern Africa is erroneous and those from S Poland and Iran (Fars) need confirmation.
description: Published as part of Turco, Federica & Bologna, Marco A., 2011, Systematic revision of the genus Cerocoma Geoffroy, 1762 (Coleoptera: Meloidae: Cerocomini) 2853, pp. 1-71 in Zootaxa 2853 (1) on page 51, DOI: 10.11646/zootaxa.2853.1.1, http://zenodo.org/record/5286891
Illustrating Dynamical Symmetries in Classical Mechanics: The Laplace-Runge-Lenz Vector Revisited
Creators: name: O'Connell, Ross C.
name: Jagannathan, Kannan
Publisher: name: arXiv
Year: 2002
Subjects: subject: Classical Physics (physics.class-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The inverse square force law admits a conserved vector that lies in the plane of motion. This vector has been associated with the names of Laplace, Runge, and Lenz, among others. Many workers have explored aspects of the symmetry and degeneracy associated with this vector and with analogous dynamical symmetris. We define a conserved dynamical variable $α$ that characterizes the orientation of the orbit in two-dimensional configuration space for the Kepler problem and an analogous variable $β$ for the isotropic harmonics oscillator. This orbit orientation variable is canonically conjugate to the angular momentum component normal to the plane of motion. We explore the canoncial one-parameter group of transformations generated by $α(β).$ Because we have an obvious pair of conserved canonically conjugate variables, it is desirable to us them as a coordinate-momentum pair. In terms of these phase space coordinates, the form of the Hamiltonian is nearly trivial because neither member of the pair can occur explicitly in the Hamiltonian. From these considerations we gain a simple picture of the dynamics in phase space. The procedure we use is in the spirit of the Hamilton-Jacobi method.
description: 15 pages, 1 figure, to be published in American Journal of Physics
Additional file 1 of MRI-based tumor shrinkage patterns after early neoadjuvant therapy in breast cancer: correlation with molecular subtypes and pathological response after therapy
Creators: name: Wang, Mengfan
name: Du, Siyao
name: Gao, Si
name: Zhao, Ruimeng
name: Liu, Shasha
name: Jiang, Wenhong
name: Peng, Can
name: Chai, Ruimei
name: Zhang, Lina
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Cancer
subject: Mental Health
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1. Table S1. Participants characteristics in the primary analysis cohort. Table S2. Participants characteristics in the subgroup analysis cohorts. Table S3. Inter-reader agreement for tumor shrinkage patterns in each cohort. Table S4. Inconsistent shrinkage pattern distribution between two readers. Table S5. MRI-based tumor shrinkage patterns association with pNR in HR+/HER2− subtype. Table S6. Univariate and multivariate analysis of factors associated with pNR in HR+/HER2− subtype. Table S7. The diagnostic efficacy of factors in each molecular subtype. Table S8. MRI-based tumor shrinkage patterns association with pCR according to different molecular subtypes in the subgroup analysis cohorts. Table S9. Univariate and multivariate analysis of factors associated with pCR according to different molecular subtypes in the subgroup analysis cohorts. Figure S1. Receiver operating characteristic (ROC) curves of the change in tumor size (continuous variable) at 1st-timepoint and 2nd-timepoint for pathologic complete response (pCR) prediction in the breast.
Beating the Standard Quantum Limit for Binary Constellations in the Presence of Phase Noise
Creators: name: Kunz, L.
name: DiMario, M. T.
name: Becerra, F. E.
name: Banaszek, K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Unconventional receivers enable reduction of error rates in optical communication systems below the standard quantum limit (SQL) by implementing discrimination strategies for constellation symbols that go beyond the canonical measurement of information-carrying quantities such as the intensity or quadratures of the electromagnetic field. An example of such a strategy is presented here for average-power constrained binary constellations propagating through a phase noise channel. The receiver, implementing a coherent displacement in the complex amplitude plane followed by photon number resolved detection, can be viewed as an interpolation between direct detection and homodyne detection.
description: 6 pages, 4 figures. ICTON 2019
Fractionalization patterns in strongly correlated electron systems: Spin-charge separation and beyond
Creators: name: Demler, Eugene
name: Nayak, Chetan
name: Kee, Hae-Young
name: Kim, Yong Baek
name: Senthil, T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss possible patterns of electron fractionalization in strongly interacting electron systems. A popular possibility is one in which the charge of the electron has been liberated from its Fermi statistics. Such a fractionalized phase contains in it the seed of superconductivity. Another possibility occurs when the spin of the electron, rather than its charge, is liberated from its Fermi statistics. Such a phase contains in it the seed of magnetism, rather than superconductivity. We consider models in which both of these phases occur and study possible phase transitions between them. We describe other fractionalized phases, distinct from these, in which fractions of the electron themselves fractionalize, and discuss the topological characterization of such phases. These ideas are illustrated with specific models of p-wave superconductors, Kondo lattices, and coexistence between d-wave superconductivity and antiferromagnetism.
description: 28 pages, 11 figs
Inertia and Air Drag in the Brazil Nut Problem
Creators: name: Nahmad-Molinari, Y.
name: Canul-Chay, G.
name: Ruiz-Suarez, J. C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The rise dynamics of a large spherical particle, in a granular bed under vertical vibrations, is experimentally studied. An inductive device has been designed to track the particle while it climbs through the bed under different conditions. A simple model based in energy considerations is presented to explain our experimental data, drawing important conclusions about the physics of the phenomenon.
description: 5 pages, 6 figures. Latex
New Early Dark Energy
Creators: name: Niedermann, Florian
name: Sloth, Martin S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: New measurements of the expansion rate of the Universe have plunged the standard model of cosmology into a severe crisis. In this letter, we propose a simple resolution to the problem that relies on a first order phase transition in a dark sector in the early Universe, before recombination. This will lead to a short phase of a New Early Dark Energy (NEDE) component and can explain the observations. We model the false vacuum decay of the NEDE scalar field as a sudden transition from a cosmological constant source to a decaying fluid with constant equation of state. The corresponding fluid perturbations are covariantly matched to the adiabatic fluctuations of a sub-dominant scalar field that triggers the phase transition. Fitting our model to measurements of the cosmic microwave background (CMB), baryonic acoustic oscillations (BAO, and supernovae (SNe) yields a significant improvement of the best-fit compared with the standard cosmological model without NEDE. We find the mean value of the present Hubble parameter in the NEDE model to be $H_0=71.4 \pm 1.0 ~\textrm{km}\, \textrm{s}^{-1}\, \textrm{Mpc}^{-1}$ ($68\, \%$ C.L.).
description: 6 pages, 2 figures, 1 table, v4: corrected BOSS likelihood in MontePython, v5: matches version published in PRD Letters (selected as Editors' suggestion)
Model Exact Low-Lying States and Spin Dynamics in Ferric Wheels; Fe$_6$ to Fe$_{12}$
Creators: name: Rudra, Indranil
name: Ramasesha, S.
name: Sen, Diptiman
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using an efficient numerical scheme that exploits spatial symmetries and spin-parity, we have obtained the exact low-lying eigenstates of exchange Hamiltonians for ferric wheels up to Fe$_{12}$. The largest calculation involves the Fe$_{12}$ ring which spans a Hilbert space dimension of about 145 million for M$_s$=0 subspace. Our calculated gaps from the singlet ground state to the excited triplet state agrees well with the experimentally measured values. Study of the static structure factor shows that the ground state is spontaneously dimerized for ferric wheels. Spin states of ferric wheels can be viewed as quantized states of a rigid rotor with the gap between the ground and the first excited state defining the inverse of moment of inertia. We have studied the quantum dynamics of Fe$_{10}$ as a representative of ferric wheels. We use the low-lying states of Fe$_{10}$ to solve exactly the time-dependent Schrödinger equation and find the magnetization of the molecule in the presence of an alternating magnetic field at zero temperature. We observe a nontrivial oscillation of magnetization which is dependent on the amplitude of the {\it ac} field. We have also studied the torque response of Fe$_{12}$ as a function of magnetic field, which clearly shows spin-state crossover.
description: Revtex, 24 pages, 8 eps figures
A comparison study between single- and dual-energy CT density extraction methods for neurological proton monte carlo treatment planning
Creators: name: B. Van Der Heyden
name: I. P. Almeida
name: G. Vilches-Freixas
name: C. Van Beveren
name: A. Vaniqui
name: C. Ares
name: K. Terhaag
name: G. P. Fonseca
name: D. B. P. Eekers
name: F. Verhaegen
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Monte Carlo proton dose calculations requires mass densities calculated from the patient CT image. This work investigates the impact of different single-energy CT (SECT) and dual-energy CT (DECT) to density conversion methods in proton dose distributions for brain tumours. Material and methods: Head CT scans for four patients were acquired in SECT and DECT acquisition modes. Commercial software was used to reconstruct DirectDensity™ images in Relative Electron Densities (RED, ρe) and to obtain DECT-based pseudo-monoenergetic images (PMI). PMI and SECT images were converted to RED using piecewise linear interpolations calibrated on a head-sized phantom, these fits were referred to as “PMI2RED” and “CT2RED”. Two DECT-based calibration methods (“Hünemohr-15it” and “Saito-15it”) were also investigated. ρe images were converted to mass-densities (ρm) to investigate ρm differences and one representative patient case was used to make a proton treatment plan. Using CT2RED as reference method, dose distribution differences in the target and in five organs-at-risk (OARs) were quantified. Results: In the phantom study, Saito-15it and Hünemohr-15it produced the lowest ρe root-mean-square error (0.7%) and DirectDensity™ the highest error (2.7%). The proton plan evaluated in the Saito-15it and Hünemohr-15it datasets showed the largest relative differences compared to initial CT2RED plan down to −6% of the prescribed dose. Compared to CT2RED, average range differences were calculated: −0.1 ± 0.3 mm for PMI2RED; −0.8 ± 0.4 mm for Hünemohr-15it, and −1.2 ± 0.4 mm for Saito-15it. Conclusion: Given the wide choice of available conversion methods, studies investigating the density accuracy for proton dose calculations are necessary. However, there is still a gap between performing accuracy studies in reference ρe phantoms and applying these methods in human CT images. For this treatment case, the PMI2RED method was equivalent to the conventional CT2RED method in terms of dose distribution, CTV coverage and OAR sparing, whereas Hünemohr-15it and Saito-15it presented the largest differences.
Tax determinants revisited an unbalanced data panel analysis
Creators: name: Rodríguez, Víctor Mauricio Castañeda
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Quantitative research on taxation is important to test which variables affect it and hence to identify strategies in order to boost tax revenue or change its composition. Albeit research on this topic is not recent, many authors have focused on developed countries, whereas others have avoided including variables that are available recently, for example many governance indicators. This paper contributes to the matter by expanding the dataset with a relevant sample of countries, variables, and time observations. Using a dataset that covers over 138 countries and a 40-year period (1976–2015) we estimate static and dynamic models, although the results generally keep unchanged. In addition, and according to the coefficients significance, some variables as the following influence taxation and/or its composition: Agriculture’s share in gross domestic product, financial intermediation, natural rents, education, population share above 65 years, quality of government, and democracy.
Analysis of a trapped Bose-Einstein condensate in terms of position, momentum, and angular-momentum variance
Creators: name: Alon, Ofir E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze, analytically and numerically, the position, momentum, and in particular the angular-momentum variance of a Bose-Einstein condensate (BEC) trapped in a two-dimensional anisotropic trap for static and dynamic scenarios. The differences between the variances at the mean-field level, which are attributed to the shape of the BEC, and the variances at the many-body level, which incorporate depletion, are used to characterize position, momentum, and angular-momentum correlations in the BEC for finite systems and at the limit of an infinite number of particles where the bosons are $100\%$ condensed. Finally, we also explore inter-connections between the variances.
description: 31 pages, 7 figures
A quiver variety approach to root multiplicities
Creators: name: Tingley, Peter
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We present combinatorial upper bounds on dimensions of certain imaginary root spaces for symmetric Kac-Moody algebras. These come from the realization of the corresponding infinity-crystal using quiver varieties. The framework is general, but we only work out specifics in rank two. In that case we give explicit bounds. These turn out to be quite accurate, and in many cases exact, even for some fairly large roots.
description: Includes an appendix coauthored with Colin Williams
How much is a lot? The maximum size of fiscal adjustments
Creators: name: Escolano, Julio
name: Jaramillo, Laura
name: Mulas-Granados, Carlos
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: The sizeable fiscal consolidation required to stabilize the debt-to-GDP ratios in several countries in the aftermath of the global crisis raises a crucial question on its feasibility. To answer this question, we propose a methodology to identify historical fiscal adjustment episodes for countries that both needed and wanted to adjust in order to stabilize debt to GDP. We identify 91 adjustment episodes in 49 countries during 1945–2014. We find that countries typically improved their cyclically adjusted primary balances by close to 5 percent of GDP. We also observe that countries make substantial efforts to stabilize debt, but ease their primary balances once this objective is achieved, without getting back to their initial lower debt-to-GDP ratio. Consolidations were larger when sustained over time and the initial deficit was high. Fiscal adjustments were also larger when accompanied by monetary easing and, to a lesser extent, by an improvement in credit conditions.
Electromagnetic modeling of near-field phase-shifting contact lithography with broadband ultraviolet illumination
Creators: name: Wang, Fei
name: Weaver, Katherine E.
name: Lakhtakia, Akhlesh
name: Horn, Mark W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Near-field phase-shifting contact lithography is modeled to characterize electromagnetic absorption in a photoresist layer with one face in contact with a quartz binary phase-shift mask. The broadband ultraviolet illumination is represented as a frequency-spectrum of normally incident plane waves. A rigorous coupled-wave analysis is carried out to determine the absorption spectrum of the photoresist layer. The specific absorption rate in the photoresist layer is calculated and examined in relation to the geometric parameters. Columnar features in the photoresist layer are of higher quality on broadband illumination in contrast to monochromatic illumination, in conformity with some recent experimental results. Feature resolution and profile are noticeably affected by the depth of the grooves in the phase-shift mask. Ideally, the feature linewidth can be less than about 100 nm for broadband illumination in the transverse-magnetic mode. These conclusions are subject to modification by the photochemistry-wavelength characteristics of the photoresist.
Tax determinants revisited. An unbalanced data panel analysis
Creators: name: Rodríguez, Víctor Mauricio Castañeda
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Quantitative research on taxation is important to test which variables affect it and hence to identify strategies in order to boost tax revenue or change its composition. Albeit research on this topic is not recent, many authors have focused on developed countries, whereas others have avoided including variables that are available recently, for example many governance indicators. This paper contributes to the matter by expanding the dataset with a relevant sample of countries, variables, and time observations. Using a dataset that covers over 138 countries and a 40-year period (1976–2015) we estimate static and dynamic models, although the results generally keep unchanged. In addition, and according to the coefficients significance, some variables as the following influence taxation and/or its composition: Agriculture’s share in gross domestic product, financial intermediation, natural rents, education, population share above 65 years, quality of government, and democracy.
Superstrong photospheric magnetic fields in sunspot penumbrae
Creators: name: Siu-Tapia, A.
name: Lagg, A.
name: van Noort, M.
name: Rempel, M.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recently, there have been some reports of unusually strong photospheric magnetic fields (which can reach values of over 7 kG) inferred from Hinode SOT/SP sunspot observations within penumbral regions. These superstrong penumbral fields are even larger than the strongest umbral fields on record and appear to be associated with supersonic downflows. The finding of such fields has been controversial since they seem to show up only when spatially coupled inversions are performed. Here, we investigate and discuss the reliability of those findings by studying in detail observed spectra associated with particularly strong magnetic fields at the inner edge of the penumbra of active region 10930. We apply classical diagnostic methods and various inversions with different model atmospheres to the observed Stokes profiles in two selected pixels with superstrong magnetic fields, and compare the results with a magnetohydrodynamic simulation of a sunspot whose penumbra contains localized regions with strong fields (nearly 5 kG at $τ=1$) associated with supersonic downflows...
description: 19 pages, 14 figures, 3 tables. Now accepted for publication in Section 9. The Sun of Astronomy and Astrophysics. Date of acceptance is 23/09/2019
Structural, electrical and energy storage properties of BaO Na2O Nb2O5 WO3 P2O5 glass ceramics system
Creators: name: Ihyadn, Abderrahim
name: Lahmar, Abdelilah
name: Mezzane, Daoud
name: Bih, Lahcen
name: Alimoussa, Abdelhadi
name: Amjoud, M'Barek
name: Marssi, Mimoun El
name: Lukyanchuk, Igor A
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric glass-ceramics are promising composite materials with dual properties, of high dielectric permittivity and high dielectric breakdown strength. In this context, new phosphate glass-ceramics 2BaO-0.5Na2O 2.5[(1-x)Nb2O5 xWO3]-1P2O5 (x=0, 0.1, 0.2, 0.3 and 0.4) designated as B0, B1, B2, B3, B4 respectively, were prepared by the controlled crystallization technology and then crystallized at high temperature of 760 °C for 10 hours. Subsequently, the obtained glass-ceramics were studied by Differential Scanning Calorimetry (DSC), X-ray powder diffraction (XRD), Raman, impedance spectroscopy, and the P-E hysteresis loops. All of these techniques allowed the identification of Ba2Na4W2Nb8O30 phase with tungsten bronze structure embedded in the glassy matrix. The density of glass-ceramics was found to increase with increasing tungsten content to reach a maximum at x =0.3 and then decreases. Dielectric and conductivity parameters were found to be governed by the presence of oxygen vacancies. Room temperature energy storage property which depends on the composition X, was performed using P-E hysteresis loops of the glass-ceramics. The optimum discharge density was obtained for B3 with an energy efficiency of 73.77%.
description: 19 pages, 9 figures
Feasibility of a synchrotron storage ring for neutral polar molecules
Creators: name: Nishimura, H.
name: Lambertson, G.
name: Kalnins, J. G.
name: Gould, H.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Using calculations and mathematical modeling, we demonstrate the feasibility of constructing a synchrotron storage ring for neutral polar molecules. The lattice is a racetrack type 3.6 m in circumference consisting of two of 180-degree arcs, six bunchers, and two long straight sections. Each straight section contains two triplet focusing lenses and space for beam injection and experiments. The design also includes a matched injector and a linear decelerator. Up to 60 bunches can be loaded and simultaneously stored in the ring. The molecules are injected at 90 m/s but the velocity of the circulating beam can be decelerated to 60 m/s after injection. The modeling uses deuterated ammonia molecules in a weak-field seeking state. Beam that survives 400 turns (15 s), has horizontal and vertical acceptances of 35 mm-mr and 70 mm-mr respectively, and an energy acceptance of plus or minus 2%.
description: eight pages, 13 figures and 4 tables, submitted to Rev. Sci. Instr
Henschiella (Henschiella) pellucida Horvath 1888
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Enicocephalidae
Henschiella
Henschiella pellucida

description: Henschiella (Henschiella) pellucida Horváth, 1888
 Asian Turkey. Hoberlandt (1956), Štys (1968, 1970a), Kerzhner (1995a), Önder et al. (2006).
 Turkey (not distinguished). Önder & Lodos (1988, as Henicocephalus pellicidus [sic !]).
 Distribution. Bosnia and Herzegovina, Armenia, Anatolia, Iraq, Turkmenistan, Uzbekistan (Kerzhner 1995a).
 Identification. Štys (1968, 1970a, species identification; 2002a, key to genera).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 9, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
Collaboration and reuse as a result of sharing data: a case study of Janelia Research Campus’s Carsen Stringer
Creators: name: Carsen Stringer
name: Hardeman, Megan
Publisher: name: figshare
Year: 2019
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications
subject: Neuroscience

description: • Carsen Stringer, Marius Pachitariu and her colleagues at University College London shared the processed data from experiments where they developed tools for large-scale recordings of tens of thousands of mice neurons to better understand how the visual cortex works so others can reproduce and reuse their data.• This data has driven statistical tool development and enabled cross-species interrogation of neural activity. For instance, other researchers have developed statistical techniques for parsing large-scale neural activity, and compared zebrafish neural activity to the mouse visual cortex data collected by Carsen and her colleagues.• Her data has also been used in The Neuroscience Data Challenge at the University of Bristol where researchers apply modelling and data approaches to neuroscience using data publicly available.
A 20 Thousand Solar Mass Black Hole in the Stellar Cluster G1
Creators: name: Gebhardt, Karl
name: Rich, R. Michael
name: Ho, Luis
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the detection of a 2.0(+1.4,-0.8)x10^4 solar mass black hole (BH) in the stellar cluster G1 (Mayall II), based on data taken with the Space Telescope Imaging Spectrograph onboard the Hubble Space Telescope. G1 is one of the most massive stellar clusters in M31. The central velocity dispersion (25 kms) and the measured BH mass of G1 places it on a linear extrapolation of the correlation between BH mass and bulge velocity dispersion established for nearby galaxies. The detection of a BH in this low-mass stellar system suggests that (1) the most likely candidates for seed massive BHs come from stellar clusters, (2) there is a direct link between massive stellar clusters and normal galaxies, and (3) the formation process of both bulges and massive clusters is similar due to their concordance in the M_BH/sigma relation. Globular clusters in our Galaxy should be searched for central BHs.
description: 4 pages, accepted in The Astrophysical Journal Letters, October 2002
The ASAS-SN Catalog of Variable Stars VI: An All-Sky Sample of $δ$ Scuti Stars
Creators: name: Jayasinghe, T.
name: Stanek, K. Z.
name: Kochanek, C. S.
name: Vallely, P. J.
name: Shappee, B. J.
name: Holoien, T. W. -S.
name: Thompson, Todd A.
name: Prieto, J. L.
name: Pejcha, O.
name: Fausnaugh, M.
name: Otero, S.
name: Hurst, N.
name: Will, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We characterize an all-sky catalog of ${\sim} 8,400$ $δ$ Scuti variables in ASAS-SN, which includes ${\sim} 3,300$ new discoveries. Using distances from \textit{Gaia} DR2, we derive period-luminosity relationships (PLRs) for both the fundamental mode and overtone pulsators in the $W_{JK}$, $V$, Gaia DR2 $G$, $J$, $H$, $K_s$ and $W_1$ bands. We find that the overtone pulsators have a dominant overtone mode, with many sources pulsating in the second overtone or higher order modes. The fundamental mode pulsators have metallicity dependent periods, with $\log_{10} (\rm P){\sim}-1.1$ for $\rm [Fe/H]0$ which leads to a period-dependant scale height. Stars with $\rm P>0.100\,d$ are predominantly located close to the Galactic disk ($\rm |Z|<0.5\,kpc$). The median period at a scale height of $\rm Z{\sim}0\, kpc$ also increases with the Galactocentric radius $\rm R$, from $\log_{10} (\rm P){\sim}-0.94$ for sources with $\rm R>9\, kpc$ to $\log_{10} (\rm P){\sim}-0.85$ for sources with $\rm R<7\, kpc$, which is indicative of a radial metallicity gradient. To illustrate potential applications of this all-sky catalog, we obtained 30 min cadence, image subtraction TESS light curves for a sample of 10 fundamental mode and 10 overtone $δ$ Scuti stars discovered by ASAS-SN. From this sample, we identified two new $δ$ Scuti eclipsing binaries, ASASSN-V J071855.62$-$434247.3 and ASASSN-V J170344.20$-$615941.2 with short orbital periods of $\rm P_{orb}=2.6096$ d and $\rm P_{orb}=2.5347$ d respectively.
description: Accepted by MNRAS
Additional file 1 of What motivates public collaborators to become and stay involved in health research?
Creators: name: Røssvoll, Toril Beate
name: Liabo, Kristin
name: Hanssen, Tove Aminda
name: Rosenvinge, Jan H.
name: Sundkvist, Elisabeth
name: Pettersen, Gunn
Publisher: name: figshare
Year: 2024
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Additional file 1. GRIPP2-short form.
Theory of the Quantum Hall Smectic Phase, I: Low Energy Properties of the Quantum Hall Smectic Fixed Point
Creators: name: Barci, Daniel G.
name: Fradkin, Eduardo
name: Kivelson, Steven A.
name: Oganesyan, Vadim
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop an effective low energy theory of the Quantum Hall (QH) Smectic or stripe phase of a two-dimensional electron gas in a large magnetic field in terms of its Goldstone modes and of the charge fluctuations on each stripe. This liquid crystal phase corresponds to a fixed point which is explicitly demonstrated to be stable against quantum fluctuations at long wavelengths. This fixed point theory also allows an unambiguous reconstruction of the electron operator. We find that quantum fluctuations are so severe that the electron Green function decays faster than any power-law, although slower than exponentially, and that consequently there is a deep pseudo-gap in the quasiparticle spectrum. We discuss, but do not resolve the stability of the quantum Hall smectic to crystallization. Finally, the role of Coulomb interactions and the low temperature thermodynamics of the QH smectic state are analyzed.
description: 14 pages, 1 figure. Greatly improved mansucript, including a detailed discussion of the problem of crystallization and new results on the case of Coulomb interactions. Final version as it was published in Physcal Review B
Cryptostemma Herrich-Schaeffer 1835
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Dipsocoridae
Cryptostemma

description: Cryptostemma Herrich-Schaeffer, 1835
 Comment. Kerzhner (1995a) listed Harpago Linnavuori, 1951 and Pachycoleus Fieber, 1860 as subgenera of Cryptostemma, both of which are currently regarded as distinct genera (e.g., Štys 1990, Pluot-Sigwalt & Péricart 2003, Heiss & Péricart 2007).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 10, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
On Odd Rainbow Cycles in Edge-Colored Graphs
Creators: name: Czygrinow, Andrzej
name: Molla, Theodore
name: Nagle, Brendan
name: Oursler, Roy
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $G = (V, E)$ be an $n$-vertex edge-colored graph. In 2013, H. Li proved that if every vertex $v \in V$ is incident to at least $(n+1)/2$ distinctly colored edges, then $G$ admits a rainbow triangle. We prove that the same hypothesis ensures a rainbow $\ell$-cycle $C_{\ell}$ whenever $n \ge 432 \ell$. This result is sharp for all odd integers $\ell \geq 3$, and extends earlier work of the authors for when $\ell$ is even.
description: 10 pages
Many-body critical phase: extended and nonthermal
Creators: name: Wang, Yucheng
name: Cheng, Chen
name: Liu, Xiong-jun
name: Yu, Dapeng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The transition between ergodic phase and many-body localization (MBL) phase lies at the heart in understanding quantum thermalization of many-body systems. Here we predict a many-body critical phase in the one-dimensional extended Aubry-André-Harper-Hubbard model, which is different from both the ergodic phase and MBL phase, implying that the quantum system hosts three different fundamental phases. It is shown that the level statistics in the many-body critical phase are well characterized by the so-called critical statistics, and the wave functions in this phase generally exhibit a multifractal behavior. We further study the half-chain entanglement entropy (EE) and thermalization properties by exact diagonalization, which show that the EE in this critical phase manifest a volume law EE scaling while the many-body states violate the eigenstate thermalization hypothesis. This work unveils a novel many-body phase which is extended but non-ergodic.
Cryptostemma remanei Josifov 1964
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Dipsocoridae
Cryptostemma
Cryptostemma remanei

description: Cryptostemma remanei Josifov, 1964
 Asian Turkey. Josifov (1967), Kerzhner (1995b), Heiss & Péricart (2007).
 Turkey (not distinguished). Önder et al. (2006).
 Distribution. France, Italy, Bulgaria, Anatolia (Josifov 1967, Kerzhner 1995 b, Heiss & Péricart 2007).
 Identification. Josifov (1964), Heiss & Péricart (2007).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 10, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
title: Латинский язык и терминология римского права (начальный курс)
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Учебное пособие содержит теоретические сведения о грамматике и лексике латинского языка, практические упражнения, тексты для перевода, термины и афоризмы, а также словари (терминов римского права и латинско-русский). Рассматриваемые языковые явления проиллюстрированы материалами юридической тематики. Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Предназначено для студентов укрупненной группы специальностей и направлений подготовки 40.00.00 «Юриспруденция», изучающих дисциплины «Латинский язык и основы юридической терминологии», «Латинский язык», а также будет полезно преподавателям и специалистам по истории римского права и правоведам.