cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Many-body Green's function theory for thin ferromagnetic films: exact treatment of the single-ion anisotropy
Creators: name: Froebrich, P.
name: Kuntz, P. J.
name: Saber, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A theory for the magnetization of ferromagnetic films is formulated within the framework of many-body Green's funtion theory which considers all components of the magnetization. The model Hamiltonian includes a Heisenberg term, an external field, a second- and fourth-order uniaxial single-ion anisotropy, and the magnetic dipole-dipole coupling. The single-ion anisotropy terms can be treated exactly by introducing higher-order Green's functions and subsequently taking advantage of relations between products of spin operators which leads to an automatic closure of the hierarchy of the equations of motion for the Green's functions with respect to the anisotropy terms. This is an improvement on the method of our previous work, which treated the corresponding terms only approximately by decoupling them at the level of the lowest-order Green's functions. RPA-like approximations are used to decouple the exchange terms in both the low-order and higher-order Green's functions. As a first numerical example we apply the theory to a monolayer for spin S=1 in order to demonstrate the superiority of the present treatment of the anisotropy terms over the previous approximate decouplings.
description: 23 pages, 5 figures
Stalolidia lyrica Nielson 2011, sp. nov.
Creators: name: Nielson, M. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Stalolidia
Stalolidia lyrica

description: Stalolidia lyrica, sp. nov.
(Plate 3C, Figs. 149–156)
 Length. Male 9.20 mm., female unknown.
 External morphology. Large, robust species. General color dark brown to black with yellow spots and markings; forewings with 2, pale yellow, disconnected transverse bands, one below mesonotum, the other subapical, veins marked with small yellow spots; mesonotum black with small, yellow spots on anterior 2/3, entirely yellow on basal 1/3; pronotum black with numerous yellow spots; crown yellow; eyes translucent (Plate 3C); face black with yellow spots and markings. Head narrower than pronotum, anterior margin broadly rounded; crown broader than width of eyes, lateral margins parallel, foveate medially, pronotum slightly longer than crown; mesonotum large, about as long as pronotum; clypeus long, broad, lateral margins broadly convex, median longitudinal carina prominent; clypellus about 1/3 as long as clypeus; broad, inflated basomedially.
 Male genitalia. Pygofer large, subquadrate, caudoventral process long, broad (Fig. 149); right subgenital plate long, broadly convex, setaceous apically (Fig. 150); style robust, about as long as aedeagus, triangulate lobe on middle in dorsal view, attenuated in apical half (Figs. 151, 152); aedeagus inflated medially in lateral view, broad in dorsal view, excavated medially in dorsal view, with numerous long setae on margins on an oblique longitudinal line medially in dorsal view (Figs. 153, 154); connective broadly Y-shaped, membrane absent, stem very short, semibulbous apically (Fig. 155); dorsal connective long, narrow (Fig. 156).
 Materials examined. Holotype male. BOLIVIA: Dpto. La Paz, Prov. Nor Yungas, Pacallo, 16.206ºS – 67.793ºW, 29-IV-2005, S. M. Clark & R. G. Johnson (NMNH).
 Etymology. The name is descriptive for the lyrate shaped aedeagus in lateral view.
 Remarks. This species is nearest to S. clava and can be distinguished by the aedeagus which is lyrate in lateral view and excavated in dorsal view (Figs. 153, 154).
description: Published as part of Nielson, M. W., 2011, Tribe Teruliini: new genera and new species of Neotropical leafhoppers with a revised key to genera and species, new records and notes on distribution and taxonomy (Hemiptera: Cicadellidae: Coelidiinae), pp. 1-45 in Zootaxa 2795 (1) on pages 40-44, DOI: 10.11646/zootaxa.2952.1.1, http://zenodo.org/record/10095398
Bulk viscosity in strong and electroweak matter
Creators: name: Tawfik, Abdel Nasser
name: Greiner, Carsten
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For temperatures $T$ ranging from a few MeV up to TeV and energy density $ρ$ up to $10^{16}~$GeV/fm$^3$, the bulk viscosity $ζ$ is calculated in non-perturbation (up, down, strange, charm, and bottom) and perturbation theories with up, down, strange, charm, bottom, and top quark flavors, at vanishing baryon-chemical potential. To these calculations, results deduced from the effective QCD-like model, the Polyakov linear-sigma model (PLSM), are also integrated in. The PLSM merely comes up with essential contributions for the vacuum and thermal condensations of the gluons and the quarks (up, down, strange, and charm flavors). Furthermore, the thermal contributions of the photons, neutrinos, charged leptons, electroweak particles, and scalar Higgs boson, are found very significant along the entire range of $T$ and $ρ$ and therefore could be well integrated in. We present the dimensionless quantity $9 ω_0 ζ/Ts$, where $ω_0$ is a perturbative scale and $s$ is the entropy density and conclude that $9 ω_0 ζ/Ts$ exponentially decreases with increasing $T$. We also conclude that the resulting $ζ$ with the non-perturbative and perturbative QCD contributions non-monotonically increases with increasing $ρ$. But with nearly-entire standard model contributions considered in the present study, $ζ$ almost-linearly increases with increasing $ρ$. Apparently, these results offer a great deal to explore in astrophysics, cosmology, and nuclear collisions.
description: 21 pages, 5 figures
Optimizing the fast Rydberg quantum gate
Creators: name: Safronova, M. S.
name: Williams, Carl J.
name: Clark, Charles W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The fast phase gate scheme, in which the qubits are atoms confined in sites of an optical lattice, and gate operations are mediated by excitation of Rydberg states, was proposed by Jaksch et al. Phys. Rev. Lett. 85, 2208 (2000). A potential source of decoherence in this system derives from motional heating, which occurs if the ground and Rydberg states of the atom move in different optical lattice potentials. We propose to minimize this effect by choosing the lattice photon frequency ωso that the ground and Rydberg states have the same frequency-dependent polarizability α(omega). The results are presented for the case of Rb.
description: 5 pages, submitted to PRA
Is foreign farm labor a blessing or a curse? Evidence from Israel
Creators: name: Kimhi, Ayal
name: Kimhi, Ayal
Publisher: name: Unknown
Year: 2015
Subjects: Farm Management
Labor and Human Capital

description: After Israel became self-sufficient in food in the late 1960s, farmers started migrating out of agriculture while production continued to increase towards export markets. This process intensified considerably when foreign labor became available. Traditional production theory predicts that foreign workers replace local workers, but the number of Israeli hired farm workers has actually increased since the arrival of foreign labor. This paper develops a modified theoretical model in which farm labor is heterogeneous, so that changes in the number of foreign and local hired workers are not necessarily opposite in sign. The results of the model are consistent with the observation that the availability of foreign labor has led to an increase in the production and export of labor-intensive horticultural products. Farms became larget and more specialized, and this has led to labor specialization, with foreign workers doing manual tasks and Israeli hired employees doing mostly managerial and professional tasks.
Equivalence of Spatial and Particle Entanglement Growth After a Quantum Quench
Creators: name: Del Maestro, Adrian
name: Barghathi, Hatem
name: Rosenow, Bernd
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze fermions after an interaction quantum quench in one spatial dimension and study the growth of the steady state entanglement entropy density under either a spatial mode or particle bipartition. For integrable lattice models, we find excellent agreement between the increase of spatial and particle entanglement entropy, and for chaotic models, an examination of two further neighbor interaction strengths suggests similar correspondence. This result highlights the generality of the dynamical conversion of entanglement to thermodynamic entropy under time evolution that underlies our current framework of quantum statistical mechanics.
description: 11 pages. Now includes analysis of next-nearest-neighbor interactions. Updated code and data repository see, https://github.com/DelMaestroGroup/papers-code-EntanglementQuantumQuench
A Fixed-Mass multifractal approach for unweighted complex networks
Creators: name: Pavón-Domínguez, Pablo
name: Moreno-Pulido, Soledad
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Complex networks have been studied in recent years due to their relevance in biological, social and technical real systems, such as the world wide web, social networks and biochemical interactions. One of the most current features of complex networks is the presence of (multi-)fractal properties. In spite of the amount of contributions that have been developed in fractal and multifractal analysis, all of them have focused on the adaptation of Fixed size algorithms (FSA) to complex networks, mostly box-counting and sandbox procedures. In this manuscript, a Fixed-mass algorithm (FMA) is adapted to explore the (multi-)fractality of unweighted complex networks is first proposed on the basis on a box-counting procedure. Thus, the aim of this work is to explore the applicability of a FMA to study fractal and multifractal characteristics of unweighted complex networks. After describing the proposed FMA for complex networks, it is tested in several kinds of complex networks such as deterministic, synthetic and real ones. Results suggest that FMA is able to adequately reproduce the fractal and multifractal properties of synthetic complex networks (scale-free, small-world and random). In addition, the algorithm is used for the multifractal description of real complex networks. The main advantage of FMA over FSA is that the minimum configuration of boxes (ideal) for completely covering the network is known. Therefore, results are quite precise when a reasonable covering configuration is obtained, allowing the reconstruction of the Mass exponent, τ , and the Dimension function, D(q), with proper goodness-fits.
Hairy black hole, Fermionic greybody factors, Quasinormal modes, Hawking radiation, Power spectrum and sparsity
Creators: name: Al-Badawi, Ahmad
name: Jha, Sohan Kumar
name: Rahaman, Anisur
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A hairy black hole (HBH) emerges due to matter surrounding the Schwarzschild metric when using the Extended Gravitational Decoupling (GD) approach. The fermionic greybody factors (GFs) and quasinormal modes (QNMs) as well as Hawking spectra and sparsity of HBH solutions are investigated. We consider massive and massless spin- 1/2 fermions, along with massless spin- 3/2 fermions. The equations of the effective potential for fermions with different spins are derived in HBH spacetime. Then, the rigorous bound method is used to calculate the fermionic spin- 1/2 and spin- 3/2 GFs. With the time domain integration method at our disposal, we illustrate the impact of additional parameters on the ringdown waveform of the massless fermionic spin -1/2 and spin -3/2 fields and, in turn, on their quasinormal modes. We then delve into investigating the Hawking spectra and sparsity of the radiation emitted by an HBH. Hairy parameters significantly affect the sparsity of Hawking radiation as well. We observe that the total power emitted by the BH increases both with $α$ and $Q$ but decreases with $l_{0}$. Our study conclusively shows the significant impact of the additional parameters on important astrophysical phenomena such as quasinormal modes, Hawking spectra, and sparsity.
Energy Spectra and Normalized Power Spectral Densities of X-Ray Nova GS 2000+25
Creators: name: Terada, K.
name: Kitamoto, S.
name: Negoro, H.
name: Iga, S.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The X-ray energy spectra and Normalized Power Spectral Densities (NPSDs) of an X-ray nova, GS 2000+25, were investigated. The X-ray energy spectra of the source consist of two components: a hard component, which can be represented by a power-law, and an ultra-soft component, represented by radiation from an optically-thick accretion disk (the disk component). In a model in which the power-law component is the Compton-scattered radiation, it is found that the temperature of the incident blackbody radiation to the Compton cloud decrease from 0.8 keV to 0.2 keV according to the decay of the intensity, which coincides with that of the inner accretion disk. When the source changed from the high-state to the low-state, both the photon index of the power-law component (or Compton y-parameter) and the NPSD of the hard component dramatically changed as did GS 1124-683. That is, the photon index changed from 2.2--2.6 to 1.7--1.8 and the absolute values of the NPSDs at 0.3 Hz of the hard component in the low-state became about 10-times larger than those of the hard component in the high-state. These X-ray properties were similar to those of other black-hole candidates, such as Cyg X-1, GX 339-4, and LMC X-3.
description: 24 pages, text only, Full version is published in PASJ 54, 609-627 (2002)
Emergent Time Crystal with Tunable Period in the Uniaxial Random Field XY Magnet
Creators: name: Basak, Sayan
name: Dahmen, Karin A.
name: Carlson, Erica W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The addition of uniaxial random fields to the XY model induces an order-by disorder transition, in which the XY magnet develops a spontaneous magnetization in the direction perpendicular to the uniaxial random field. Here, we use simulations to explore the robustness of this phase transition with respect to a rotating driving field. We find that the order-by-disorder transition is robust, persisting to finite applied field. In the vicinity of the critical driving field strength, a time crystal emerges, in which the period of the limit cycles becomes an integer $n>1$ multiple of the driving period. Because $n$ increases with system size, the period of the time crystal can be engineered. This period multiplication cascade is reminiscent of that occuring in amorphous solids subject to oscillatory shear near the onset of plastic deformation, and of the period bifurcation cascade near the onset of chaos in nonlinear systems, suggesting it is part of a larger class of phenomena in transitions of dynamical systems. Applications include magnets, electron nematics, and quantum gases.
description: Main Article: 11pages, 7 figures, 2 tables Supplementay info included: 6 pages, 5 figures This is a pre-print of an article published in Nature Communications. The final authenticated version is available online at: https://doi.org/10.1038/s41467-020-18270-6
O ENSINO DA LÍNGUA INGLESA NO ENSINO FUNDAMENTAL E A POLÍTICA DE FORMAÇÃO DE PROFESSORES
Creators: name: Vania Gomes de Souza
name: Dayvison Bandeira de Moura
name: Marcelo Máximo Purificação
name: Avaetê de Lunetta e Rodrigues Guerra
name: Renan Antônio da Silva
Publisher: name: Zenodo
Year: 2025

description: A globalização tornou o domínio da língua inglesa essencial para a comunicação e inclusão social, refletindo-se na sua inclusão no currículo do Ensino Fundamental no Brasil. No entanto, desafios como a falta de preparação dos professores e a marginalização do ensino de idiomas comprometem o desenvolvimento das competências linguísticas necessárias para a participação ativa no mundo globalizado. Neste contexto, o presente estudo tem como objetivo analisar a inserção da língua inglesa no Ensino Fundamental brasileiro, investigando as práticas pedagógicas e as políticas de formação de professores que cercam esse processo. A metodologia deste estudo fundamenta-se em uma revisão bibliográfica, que envolve a análise de publicações acadêmicas, artigos científicos e livros que tratam da introdução da língua inglesa no contexto educacional brasileiro. Em suma, as diretrizes da BNCC, quando aplicadas de maneira eficaz, têm o potencial de transformar a educação básica no Brasil. Para isso, é necessário um comprometimento contínuo de todos os envolvidos em construir um sistema educacional que valorize tanto o conhecimento formal quanto o saber experiencial, promovendo uma formação integral e cidadã.
Non-congruent non-degenerate curves with identical signatures
Creators: name: Geiger, Eric
name: Kogan, Irina A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: I.2.10
subject: 53A04, 53A55, 68T45

description: While the equality of differential signatures (Calabi et al, Int. J. Comput. Vis. 26: 107-135, 1998) is known to be a necessary condition for congruence, it is not sufficient (Musso and Nicolodi, J. Math Imaging Vis. 35: 68-85, 2009). Hickman (J. Math Imaging Vis. 43: 206-213, 2012, Theorem 2) claimed that for non-degenerate planar curves, equality of Euclidean signatures implies congruence. We prove that while Hickman's claim holds for simple, closed curves with simple signatures, it fails for curves with non-simple signatures. In the later case, we associate a directed graph with the signature and show how various paths along the graph give rise to a family of non-congruent, non-degenerate curves with identical signatures. Using this additional structure, we formulate congruence criteria for non-degenerate, closed, simple curves and show how the paths reflect the global and local symmetries of the corresponding curve.
description: 33 pages, 22 figures. Page 20: In the proof of Corollary 31 the notation for the length, $L_W$, of a reconstructed curve $\Gamma_W$ is introduced and defined. Page 23: The upper bound on the integral in equation (35) is updated to use $L_W$ instead of $L$ and the definition of $L_W$ is referred to. Page 23: The assumption "$m$ and $\xi$ are relatively prime" is added to Proposition 36
Gravitational-Wave Inspiral of Compact Binary Systems to 7/2 Post-Newtonian Order
Creators: name: Blanchet, Luc
name: Faye, Guillaume
name: Iyer, Bala R.
name: Joguet, Benoit
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The inspiral of compact binaries, driven by gravitational-radiation reaction, is investigated through 7/2 post-Newtonian (3.5PN) order beyond the quadrupole radiation. We outline the derivation of the 3.5PN-accurate binary's center-of-mass energy and emitted gravitational flux. The analysis consistently includes the relativistic effects in the binary's equations of motion and multipole moments, as well as the contributions of tails, and tails of tails, in the wave zone. However the result is not fully determined because of some physical incompleteness, present at the 3PN order, of the model of point-particle and the associated Hadamard-type self-field regularization. The orbital phase, whose prior knowledge is crucial for searching and analyzing the inspiral signal, is computed from the standard energy balance argument.
description: 12 pages, version which includes the correction of an Erratum to be published in Phys. Rev. D (2005)
Additional file 4: Figure S4. of Erratum to: Purification and characterization of a cytochrome c with novel caspase-3 activation activity from the pathogenic fungus Rhizopus arrhizus
Creators: name: Saxena, Manoj
name: Rohit Sharma
name: Josell Ramirez-Paz
name: Tinoco, Arthur
name: Griebenow, Kai
Publisher: name: figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Western blot analysis to test the presence of cyt c in culture supernatants of R. arrhizus using horse cyt c monoclonal antibody. (DOCX 166Â kb)
Interplay of quantum phase transition and flat band in hybrid lattices
Creators: name: Zhu, Gui-Lei
name: Ramezani, Hamidreza
name: Emary, Clive
name: Gao, Jin-Hua
name: Wu, Ying
name: Lü, Xin-You
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the interplay of superradiant phase transition (SPT) and energy band physics in an extended Dicke-Hubbard lattice whose unit cell consists of a Dicke model coupled to an atomless cavity. We found in such a periodic lattice the critical point that occurs in a single Dicke model becomes a critical region that is periodically changing with the wavenumber $k$. In the weak-coupling normal phase of the system we observed a flat band and its corresponding localization that can be controlled by the ground-state SPT. Our work builds the connection between flat band physics and SPT, which may fundamentally broaden the regimes of many-body theory and quantum optics.
description: 9 pages, 5 figures, published version
Understanding farmer cooperatives’ self-inspection behavior to guarantee agri-product safety in China
Creators: name: Zhou, Jie-Hong
name: Yan, Zhen
name: Li, Kai
name: Zhou, Jie-Hong
name: Yan, Zhen
name: Li, Kai
Publisher: name: Unknown
Year: 2015
Subjects: Crop Production/Industries
International Development
Land Economics/Use

description: The presence of toxic agri-products, and chemical contamination remain for the existence of smallholder farmers, who are not educated to use agricultural inputs correctly. This inability raises the issue of safety control in the agricultural sector. We proposes that cooperatives’ self-inspection of agricultural products before they enter the market can better organize small farmers to utilize a standardized production and safety management system. An Ordered Logistic Regression Model is employed to estimate the factors that influence cooperatives' choices of inspection frequency. The results show that the respondents expressed a medium to high level of implementing self-inspection but a lower level of concern in testing products by batch. The regression results indicate that subjective norms, the perceived behavioral control of managers, input management, and production documentation significantly affect cooperatives’ self-inspection behavior. The future implementation of safety inspection depends on the extent to which subjective norms, ability, and internal rules can improve agri-product safety in China.
Impact of Rising Food Prices on Food Consumption and Nutrition of China’s Rural Poor
Creators: name: Lyu, Kaiyu
name: Zhang, Xuemei
name: Xing, Li
name: Zhang, Chongshang
name: Lyu, Kaiyu
name: Zhang, Xuemei
name: Xing, Li
name: Zhang, Chongshang
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Food Consumption/Nutrition/Food Safety
subject: International Development
subject: Rural household
subject: Rural poverty
subject: Food consumption
subject: Nutrition

description: Using unique rural household panel data in 2005–2010, this study estimates nutrient elasticity for rural households by income group and evaluates the impacts of rising food prices on food consumption and nutrition of the rural poor. The results show that the shocks of income and rising food prices have adverse impacts on the nutrition of rural households, especially for low-income groups, purely poor farming groups, and minorities who are not capable of self-adjustment and are more vulnerable to rising food prices. Interestingly, we found that the rural poor could consciously adjust food consumption structure to adapt to rising food prices. In this regard, future research would help to provide effective policy implications for preventing shocks to the rural poor.
Spin dynamics of the S=1/2 antiferromagnetic zig-zag ladder with anisotropy
Creators: name: Sacramento, P. D.
name: Vieira, V. R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use exact diagonalization and the modified Lanczos method to study the finite energy and finite momentum spectral weight of the longitudinal and transverse spin excitations of the anisotropic zig-zag ladder. We find that the spin excitations form continua of gapless or gapped spinons in the different regions of the phase diagram. The results obtained are consistent with a picture previously proposed that in the anisotropic case there is a transition from a gapped regime to a gapless regime, for small interchain coupling. In this regime we find a sharp low-energy peak in the structure function for the transverse spin excitations, consistent with a finite stiffness.
description: 17 figures
Market Level Effects of World Food Program Local and Regional Procurement of Food Aid in Africa
Creators: name: Zavale, Helder
name: Myers, Robert
name: Tschirley, David
name: Zavale, Helder
name: Myers, Robert
name: Tschirley, David
Publisher: name: Unknown
Year: 2015
Subjects: Food Consumption/Nutrition/Food Safety
Food Security and Poverty
International Development

description: This paper assesses the impact of local and regional procurement (LRP) of food aid on local market prices in Africa. In particular we study maize in Uganda and Mozambique and beans in Ethiopia. Two complementary modelling approaches are employed : a vector autoregression (VAR) and a computational model (CM). The VAR is a reduced-form econometric approach while the CM is a structural simulation approach. Using two different approaches provides a useful consistency check. Results from the VAR show average price increases brought about by LRP are statistically significant and range from 2% to 16%. The size of the average estimated price effects are economically meaningful for maize in Uganda but much smaller (though still statistically significant) for maize in Mozambique and beans in Ethiopia. In all three country applications, LRP is estimated to have no effect on price variability. Results from the CM fall within a 90% confidence bound around results obtained from the VAR.
Entanglement generation and multiparticle interferometry with neutral atoms
Creators: name: Dudarev, Artem M.
name: Diener, Roberto B.
name: Wu, Biao
name: Raizen, Mark G.
name: Niu, Qian
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the preparation and manipulation of states involving a small number of interacting particles. By controlling the splitting and fusing of potential wells, we show how to interconvert Mott-insulator-like and trapped BEC-like states. We also discuss the generation of "Schrödinger cat" states by splitting a microtrap and taking into practical consideration the asymmetry between the resulting wells. These schemes can be used to perform multiparticle interferometry with neutral atoms, where interference effects can be observed only when all the participating particles are measured.
description: 5 figures
ipgmvq/averaged_wiener_process_autocorrelation_autocovariance: The averaged Wiener process autocovariance and autocorrelation matrices and code to verify those with a Monte Carlo simulation
Creators: name: Ipgmvq
Publisher: name: Zenodo
Year: 2021
Subjects: Wiener process
averaged Wiener process
autocovariance matrix
autocorrelation matrix
Monte Carlo
unit-averaged Wiener process

description: The averaged Wiener process autocovariance and autocorrelation matrices and code to verify those with a Monte Carlo simulation This GitHub repository gives analytic formulas to calculate the autocovariance and autocorrelation matrices for an averaged Wiener process with equal-distance time points. Those matrices are supplemented with Python numpy code to verify those formulas with a Monte Carlo simulation. The file is in the format for Jupyter Notebook / JupyterLab. The html rendition is best viewed at the URL https://ipgmvq.github.io/averaged_wiener_process_autocorrelation_autocovariance/wiener.html .
Some integral operators acting on $H^{\infty}$
Creators: name: Anderson, Austin
name: Jovovic, Mirjana
name: Smith, Wayne
Publisher: name: arXiv
Year: 2024
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47B38 (Primary) 47G10, 30H05 (Secondary)

description: Let $f$ and $g$ be analytic on the unit disc $\mathbb{D}$. The integral operator $T_g$ is defined by $ T_g f(z) = \int_0^z f(t)g'(t)\,dt$, $z \in \mathbb{D}$. The problem considered is characterizing those symbols $g$ for which $T_g$ acting on $H^\infty$, the space of bounded analytic functions on $\mathbb{D}$, is bounded or compact. When the symbol is univalent, these become questions in univalent function theory. The corresponding problems for the companion operator, $ S_g f(z)= \int_0^z f'(t)g(t)\, dt$, acting on $H^\infty$ are also studied.
Erasable Bit Commitment from Temporary Quantum Trust
Creators: name: Lütkenhaus, Norbert
name: Marwah, Ashutosh S
name: Touchette, Dave
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new setting for two-party cryptography with temporarily trusted third parties. In addition to Alice and Bob in this setting, there are additional third parties, which Alice and Bob both trust to be honest during the protocol. However, once the protocol concludes, there is no guarantee over the behaviour of these third parties. It is possible that they collaborate and act adversarially. Our goal is to use these third parties to facilitate protocols which are impossible in two-party cryptography. We implement a variant of bit commitment in this setting, which we call erasable bit commitment. In this primitive, Alice has the choice of either opening or erasing her commitment after the commit phase. The ability to ask for an erasure allows Alice to ask the trusted parties to erase her commitment in case the trust period is about to expire. This erasure prevents a future coalition of the third parties and Bob from extracting any information about the commitment. However, this ability also makes erasable bit commitment weaker than the standard version of bit commitment. In addition to satisfying the security requirements of bit commitment, our protocol also does not reveal any information about the commitment to the third parties. Lastly, our protocol for this primitive requires a constant number of trusted third parties and can tolerate a small number of corrupt trusted parties as well as implementation errors.
India’s Grain Security Policy in the Era of High Food Prices: A Computable General Equilibrium Analysis
Creators: name: Yu, Wusheng
name: Bandara, Jayatilleke S
name: Yu, Wusheng
name: Bandara, Jayatilleke S
Publisher: name: Unknown
Year: 2015
Subjects: subject: Crop Production/Industries
subject: Food Security and Poverty
subject: International Development
subject: India
subject: food security policy
subject: trade policy
subject: agriculture subsidy
subject: computable general equilibrium

description: This study evaluates the fiscal and welfare costs of India’s food policy during the 2007-08 global food crisis. India’s domestic grain price stabilization through consumer and producer subsidies and export restrictions is shown to have caused huge fiscal costs and equally large welfare costs, an outcome that is almost always the worst as compared to alternative policy mixes examined. While the most efficient and cost-effective alternatives may not be feasible due to political economy considerations, we argue that there exist some feasible and superior “middle-ground” policy mixes featuring partial relaxations of domestic subsidizations and/or less restrictive border policies.
On the Fate of Close-in Extrasolar Planets
Creators: name: Jiang, Ing-Guey
name: Ip, Wing-Huen
name: Yeh, Li-Chin
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been shown that there is a possible mass-period correlation for extrasolar planets from the current observational data and this correlation is, in fact, related to the absence of massive close-in planets, which are strongly influenced by the tidal interaction with the central star. We confirm that the model in Pätzold & Rauer (2002) is a good approximation for the explanation of the absence of massive close-in planets. We thus further determine the minimum possible semimajor axis for these planets to be detected during their lifetime and also study their migration time scale at different semimajor axes by the calculations of tidal interaction. We conclude that the mass-period correlation at the time when these planets were just formed was less tight than it is now observed if these orbital migrations are taken into account.
description: 15 pages, accepted for publication in ApJ
Agricultural diversification and Land use patterns in Southeast Asia
Creators: name: Mwangi, Edina Metili
name: Yu, Bingxin
name: Mwangi, Edina Metili
name: Yu, Bingxin
Publisher: name: Unknown
Year: 2015
Subjects: Agribusiness
International Development
Land Economics/Use

description: Countries in Asia have undergone a process of transformation in the past four decades as both real incomes and the share of populations living in urban areas have increased. Evidence shows accompanying shifts in food consumption as well as production across the region, but how much each country has shifted domestic production and which farmers in particular are shifting is unclear. There has been a noticeable shift in consumption patterns away from staples (mainly rice), toward high-value commodities such as fruits, vegetables, and meat. In response, we see growing diversification in agricultural production with a steady decrease in the share of harvested area growing rice and an accompanying increase in the share of harvested area growing horticulture. In this paper we use household survey data from Cambodia, Vietnam, and Myanmar to explore the extent of crop diversification at the household level, analyze differences between farmers who primarily grow rice and those who choose to diversify, and explore the factors that encourage them to do so.
Geometrical Nonlinearity of Circular Plates and Membranes: an Alternative Method
Creators: name: Cattiaux, D.
name: Kumar, S.
name: Zhou, X.
name: Fefferman, A.
name: Collin, E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We apply the well-established theoretical method developed for geometrical nonlinearities of micro/nano-mechanical clamped beams to circular drums. The calculation is performed under the same hypotheses, the extra difficulty being to analytically describe the (coordinate-dependent) additional stress generated in the structure by the motion. Specifically, the model applies to non-axisymmetric mode shapes. An analytic expression is produced for the Duffing (hardening) nonlinear coefficient, which requires only the knowledge of the mode shape functions to be evaluated. This formulation is simple to handle, and does not rely on complex numerical methods. Moreover, no hypotheses are made on the drive scheme and the nature of the in-plane stress: it is not required to be of electrostatic origin. We confront our predictions with both typical experimental devices and relevant theoretical results from the literature. Generalization of the presented method to Duffing-type mode-coupling should be a straightforward extension of this work. We believe that the presented modeling will contribute to the development of nonlinear physics implemented in 2D micro/nano-mechanical structures.
Paraspicera Kieffer 1907
Creators: name: Ros-Farré, P.
name: Pujade-Villar, J.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Figitidae
Paraspicera

description: Key to the species of Paraspicera
 1 Scutellar spine long, 1/2 the length of the scutellar disk (Fig. 1a). Scutellar foveae small, distinctly delimited posteriorly, with two or three longitudinal carinae (Fig. 1a). Conspicuous interfoveal carina extending along the scutellar disk (Fig. 1a)...................................................................................... Paraspicera bakeri Kieffer
 - Scutellar spine short, 1/3 the length of the scutellar disk (Fig. 2a). Scutellar foveae large, not delimited posteriorly, with many longitudinal carinae (Fig. 2a). Unconspicuous interfoveal carina extending along the scutellar disk (Fig. 2a)............................................................................................. Paraspicera brandaoi n. sp.
description: Published as part of Ros-Farré, P. & Pujade-Villar, J., 2011, Revision of the genus Paraspicera Kieffer, 1907 (Hym: Figitidae: Aspicerinae), pp. 48-56 in Zootaxa 2801 (1) on page 50, DOI: 10.11646/zootaxa.2801.1.3, http://zenodo.org/record/5290125
Electrical manipulation of magnetic anisotropy in a Fe$_{81}$Ga$_{19}$/PMN-PZT magnetoelectric multiferroic composite
Creators: name: Jahjah, Walaa
name: Jay, Jean-Philippe
name: Grand, Yann Le
name: Fessant, Alain
name: Prinsloo, Aletta-R. E.
name: Sheppard, Charles-J.
name: Dekadjevi, David
name: Spenato, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetoelectric composites are an important class of multiferroic materials that pave the way towards a new generation of multifunctional devices directly integrable in data storage technology and spintronics. This study focuses on strain-mediated electrical manipulation of magnetization in an extrinsic multiferroic. The composite includes 5 nm or 60 nm Fe$_{81}$Ga$_{19}$ thin films coupled to a piezoelectric (011)-PMN-PZT. The magnetization reversal study reveals a converse magnetoelectric coefficient $α_\mathrm{CME,max} \approx 2.7 \times {10^{-6}}$ s.m$^{-1}$ at room temperature. This reported value of $α_\mathrm{CME}$ is among the highest so far compared to previous reports of single-phase multiferroics as well as composites. An angular dependency of $α_\mathrm{CME}$ is also shown for the first time, arising from the intrinsic magnetic anisotropy of FeGa. The highly efficient magnetoelectric composite FeGa/PMN-PZT demonstrates drastic modifications of the in-plane magnetic anisotropy, with an almost 90$^{\circ}$ rotation of the preferential anisotropy axis in the thinner films under an electric field E = 10.8 kV.cm$^{-1}$. Also, the influence of thermal strain on the bilayer's magnetic coercivity is compared to that of a reference bilayer FeGa/Glass at cryogenic temperatures. A different evolution is observed as a function of temperature, revealing a substrate thermo-mechanical influence which has not yet been reported in FeGa thin films coupled to a piezoelectric material.
Capturing Cancer as Music: Cancer Mechanisms Expressed through Musification
Creators: name: Hnatyshyn, Rostyslav
name: Hong, Jiayi
name: Maciejewski, Ross
name: Norby, Christopher
name: Maley, Carlo C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Multimedia (cs.MM)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The development of cancer is difficult to express on a simple and intuitive level due to its complexity. Since cancer is so widespread, raising public awareness about its mechanisms can help those affected cope with its realities, as well as inspire others to make lifestyle adjustments and screen for the disease. Unfortunately, studies have shown that cancer literature is too technical for the general public to understand. We found that musification, the process of turning data into music, remains an unexplored avenue for conveying this information. We explore the pedagogical effectiveness of musification through the use of an algorithm that manipulates a piece of music in a manner analogous to the development of cancer. We conducted two lab studies and found that our approach is marginally more effective at promoting cancer literacy when accompanied by a text-based article than text-based articles alone.
Stable Operation of a 300-m Laser Interferometer with Sufficient Sensitivity to Detect Gravitational-Wave Events within our Galaxy
Creators: name: Ando, Masaki
name: collaboration, the TAMA
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: TAMA300, an interferometric gravitational-wave detector with 300-m baseline length, has been developed and operated with sufficient sensitivity to detect gravitational-wave events within our galaxy and sufficient stability for observations; the interferometer was operated for over 10 hours stably and continuously. With a strain-equivalent noise level of $h\sim 5 \times 10^{-21} /\sqrt{\rm Hz}$, a signal-to-noise ratio (SNR) of 30 is expected for gravitational waves generated by a coalescence of 1.4 $M_\odot$-1.4 $M_\odot$ binary neutron stars at 10 kpc distance. %In addition, almost all noise sources which limit the sensitivity and which %disturb the stable operation have been identified. We evaluated the stability of the detector sensitivity with a 2-week data-taking run, collecting 160 hours of data to be analyzed in the search for gravitational waves.
description: 5 pages, 4 figures
Additional file 1 of FitEllipsoid: a fast supervised ellipsoid segmentation plugin
Creators: name: Kovac, Bastien
name: JĂŠrĂ´Me Fehrenbach
name: Guillaume, Ludivine
name: Weiss, Pierre
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Molecular Biology
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
subject: Developmental Biology

description: This file contains mathematical facts and proofs regarding our approach, the detailed algorithms, and quantitative 2D and 3D comparisons with other approaches. (PDF 496 kb)
Quanto Option Pricing
Creators: name: Lee, David
Publisher: name: Zenodo
Year: 2021
Subjects: quanto option, quanto feature, quanto forward

description: A quanto option is an option whose payout is made in a currency other than that of the underlying security, based on a fixed exchange rate. The term “quanto” is abbreviation for “quantity adjusted” that refers to the feature where the payoff of an option is determined by the financial price of index in one currency but the actual payout if realized in another currency.
description: https://ia801408.us.archive.org/2/items/eq-quanto-14/EqQuanto-14.pdf
Chromatic characteristic classes in ordinary group cohomology
Creators: name: Green, David J.
name: Hunton, John R.
name: Schuster, Bjoern
Publisher: name: arXiv
Year: 2001
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 20J06 (primary), 16W30 55P47 55R40 (secondary)

description: We study a family of subrings, indexed by the natural numbers, of the mod-p cohomology of a finite group G. These subrings are based on a family of v_n-periodic complex oriented cohomology theories and are constructed as rings of generalised characteristic classes. We identify the varieties associated to these subrings in terms of colimits over categories of elementary abelian subgroups of G, naturally interpolating between the work of Quillen on var(H^*(BG)), the variety of the whole cohomology ring, and that of Green and Leary on the variety of the Chern subring, var(Ch(G)). Our subrings give rise to a "chromatic" (co)filtration, which has both topological and algebraic definitions, of var(H^*(BG)) whose final quotient is the variety var(Ch(G)).
Combinatorial formulas for some generalized Ekeland-Hofer-Zehnder capacities of convex polytopes
Creators: name: Shi, Kun
name: Lu, Guangcun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D05, 52B12

description: Motivated by Pazit Haim-Kislev's combinatorial formula for the Ekeland-Hofer-Zehnder capacities of convex polytopes, we give corresponding formulas for $Ψ$-Ekeland-Hofer-Zehnder and coisotropic Ekeland-Hofer-Zehnder capacities of convex polytopes introduced by the second named author and others recently. Contrary to Pazit Haim-Kislev's subadditivity result for the Ekeland-Hofer-Zehnder capacities of convex domains, we show that the coisotropic Hofer-Zehnder capacities satisfy the subadditivity for suitable hyperplane cuts of two-dimensional convex domains in the reverse direction.
description: 18 pages, published version
Aspicera foveata Ros-Farré & Pujade-Villar 2011, n. comb.
Creators: name: Ros-Farré, P.
name: Pujade-Villar, J.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Figitidae
Aspicera
Aspicera foveata

description: Aspicera foveata (Belizin, 1952) n. comb.
 Heteraspidia foveata Belizin, 1952: 300–301.
 Paraspicera foveata (Belizin), in Weld, 1961: 279.
 Type material likely lost (O. Kovalev, pers. com.). After detailed examination of Belizin’s description, and considering that Kovalev (1974) described Heteraspidia kerzhneri consulting the Belizin type of H. foveata, after reexamination of the type of kerzhneri we do not have any doubt that H. foveata elongs to the genus Aspicera.
description: Published as part of Ros-Farré, P. & Pujade-Villar, J., 2011, Revision of the genus Paraspicera Kieffer, 1907 (Hym: Figitidae: Aspicerinae), pp. 48-56 in Zootaxa 2801 (1) on page 55, DOI: 10.11646/zootaxa.2801.1.3, http://zenodo.org/record/5290125