cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Swift and XMM-Newton observations of an RS CVn type eclipsing binary SZ Psc: Superflare and coronal properties
Creators: name: Karmakar, Subhajeet
name: Naik, Sachindra
name: Pandey, Jeewan C.
name: Savanov, Igor S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an in-depth study of a large and long duration ($>$1.3 days) X-ray flare observed on an RS CVn type eclipsing binary system SZ Psc using observations from Swift observatory. In the 0.35$-$10 keV energy band, the peak luminosity is estimated to be 4.2$\times$10$^{33}$ erg s$^{-1}$. The quiescent corona of SZ Psc was observed $\sim$5.67 d after the flare using Swift observatory, and also $\sim$1.4 yr after the flare using the XMM-Newton satellite. The quiescent corona is found to consist of three temperature plasma: 4, 13, and 48 MK. High-resolution X-ray spectral analysis of the quiescent corona of SZ Psc suggests that the high first ionization potential (FIP) elements are more abundant than the low-FIP elements. The time-resolved X-ray spectroscopy of the flare shows a significant variation in the flare temperature, emission measure, and abundance. The peak values of temperature, emission measure, and abundances during the flare are estimated to be 199$\pm$11 MK, 2.13$\pm$0.05 $\times 10^{56}$ cm$^{-3}$, 0.66$\pm$0.09 Z$_{\odot}$, respectively. Using the hydrodynamic loop modeling, we derive the loop length of the flare as 6.3$\pm$0.5 $\times 10^{11}$ cm, whereas the loop pressure and density at the flare peak are derived to be 3.5$\pm$0.7 $\times 10^{3}$ dyne cm$^{-2}$ and 8$\pm$2 $\times 10^{10}$ cm$^{-3}$, respectively. The total magnetic field to produce the flare is estimated to be 490$\pm$60 G. The large magnetic field at the coronal height is supposed to be due to the presence of an extended convection zone of the sub-giant and the high orbital velocity.
description: 23 pages, 12 figures, 5 tables, accepted for publication in MNRAS
Pachyprotasis scalaris Malaise 1945
Creators: name: Zhong, Yihai
name: Wei, Meicai
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Pachyprotasis
Pachyprotasis scalaris

description: Pachyprotasis scalaris Malaise, 1945
(Figs 25, 26, 52, 69, 82, 94, 109)
Pachyprotasis scalaris Malaise, 1945: 145 –146. [female], type locality: Kambaiti at 2000 m, Myanmar. Pachyprotasis scalaris: Saini 2007: 81 –82, figs 161, 164, 169, 173, 187, 193, 201.
Material examined. 1 Ƥ, Jiuzhaigou, Sichuan Province (103°54ʹE, 33°11ʹN, alt. 2500 m), 16.07.2001, Meicai Wei leg.
Distribution. China (Sichuan) (Fig. 109); Myanmar, India.
Female (Figs 25, 26): Body length 8 mm. Head muddy yellow, black are: apical half of frons continuing with ocellar area, median part on upper part of occiput, antenna except ventral sides of scape and pedicel; dorsal part of body black, muddy yellow are: pronotum except median, a V-shaped spot on lateral sides of median mesoscutal lobe, a central butterfly-shaped spot and lateral margins on lateral mesoscutal lobe, mesoscutellum, posttergum, metascutellum, spots on metapostnotum, an extremely narrow band each on posterior margin of terga 1–5, tergum 10 entirely; body ventrally muddy yellow, black are: mesopleural suture, apex and dorsal margin of ovipositor sheath. Legs muddy yellow, black are: a narrow stripe each on dorsal part of four front legs from apex of femur to claw, a broad inner band on apical 3/7 of metafemur, metatibia except ventral center, metatarsus except base of each tarsomere; other part of metatarsus pale brown. Wings hyaline, fore wing vein C, R1, 2r and stigma pale green, other veins black. Punctures on dorsal part of head rather small, shallow and scattered, microsculpture dense, interspaces distinctly shiny; punctures on mesepisternum shallow, minute; mesoscutellum and posttergum polished, punctures nearly absent, microsculpture dense, interspaces shiny. Malar space 2 times diameter of median ocellus; median fovea ditch-like, shallow; postocellar area slightly elevated, 1.5 times as broad as long (Figs 52, 69); antenna shorter than combined length of thorax and abdomen, flagellomere 1 about 1.1 times length of flagellomere 2; mesoscutellum slightly elevated, with acute lateral ridge. Ovipositor sheath as long as hind tarsomere 1 in lateral view, valvula 3 narrow at apex and slightly longer than valvifer 2 in lateral view. Lancet with 20 serrulae (Fig. 82), base of each serrula slightly elevated, middle serrulae each with 2 basal denticles and 4–6 distal denticles (Fig. 94).
Male. Not examined.
description: Published as part of Zhong, Yihai & Wei, Meicai, 2012, A review of the Pachyprotasis pallidistigma species group (Hymenoptera: Tenthredinidae) from China, with descriptions of three new species, pp. 1-38 in Zootaxa 3242 on pages 10-11, DOI: 10.5281/zenodo.280476
Towards quantum gravity with neural networks: Solving quantum Hamilton constraints of 3d Euclidean gravity in the weak coupling limit
Creators: name: Sahlmann, Hanno
name: Sherif, Waleed
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We consider 3-dimensional Euclidean gravity in the weak coupling limit of Smolin and show that it is BF-theory with $\text{U(1)}^3$ as a Lie group. The theory is quantised using loop quantum gravity methods. The kinematical degrees of freedom are truncated, on account of computational feasibility, by fixing a graph and deforming the algebra of the holonomies to impose a cutoff on the charge vectors. This leads to a quantum theory related to $\text{U}_q \text{(1)}^3$ BF-theory. The effect of imposing the cutoff on the charges is examined. We also implement the quantum volume operator of 3d loop quantum gravity. Most importantly we compare two constraints for the quantum model obtained: a master constraint enforcing curvature and Gauss constraint, as well as a combination of a quantum Hamilton constraint constructed using Thiemann's strategy and the Gauss master constraint. The two constraints are solved using the neural network quantum state ansatz, demonstrating its ability to explore models which are out of reach for exact numerical methods. The solutions spaces are quantitatively compared and although the forms of the constraints are radically different, the solutions turn out to have a surprisingly large overlap. We also investigate the behavior of the quantum volume in solutions to the constraints.
description: 46 pages, 14 figures
Rural Cooperatives Magazine, January/February 2009
Creators: name: Hogeland, Julie
name: Thompson, Stephen
name: Reynolds, Bruce
name: Cline, Harry
name: Liebrand, Carolyn
name: Ling, Charles
name: Chesnick, David
name: Crooks, Anthony
name: Borst, Alan
name: Robinson, Robin
name: Lynn, Pittman
name: Campbell, Dan
name: Hogeland, Julie
name: Thompson, Stephen
name: Reynolds, Bruce
name: Cline, Harry
name: Liebrand, Carolyn
name: Ling, Charles
name: Chesnick, David
name: Crooks, Anthony
name: Borst, Alan
name: Robinson, Robin
name: Lynn, Pittman
name: Campbell, Dan
Publisher: name: Unknown
Year: 2009
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features- Making a Market; So Far, So Good; Building a Bridge for Ownership Succession; Calcot surviving in floundering cotton industry; Switching On Cow Power; Opportunities for co-op ownership of cellulosic ethanol; New financing mechanisms for renewable energy; Managing Risk; News that Gets Used
Finite nuclear size effect on Lamb shift of s1/2, p1/2, and p3/2 atomic states
Creators: name: Milstein, A. I.
name: Sushkov, O. P.
name: Terekhov, I. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider one-loop self-energy and vacuum polarization radiative corrections to the shift of atomic energy level due to finite nuclear size. Analytic expressions for vacuum polarization corrections are derived. For the self-energy of p1/2 and p3/2 states in addition to already known terms we derive next-to-leading nonlogarithmic Zα-terms. Together with contributions obtained earlier the terms derived in the present work give explicit analytic expressions for s1/2 and p1/2 corrections which agree with results of previous numerical calculations up to Z=100 (Z is the nuclear charge number). We also show that the finite nuclear size radiative correction for a p3/2 state is not small compared to the similar correction for a p1/2 state at least for small Z.
description: 12 pages, 7 figures
Régimen y Protección Forestal en casos de  Incendios
Creators: name: Ahumada Catro, Loreto Alejandra
Publisher: name: Zenodo
Year: 2024

description: Trabajo final para la obtencion del Master en Derecho Ambiental ante la Universidad Internacional de la Rioja, España-

Trabajo en la que se investiga el regimen juridico internacional, el de la Union Europea, de España y de Colombia analizando dichas normativas que se relaciona con la forestacion, su cuidado y como se vincula su proteccion ante casos de incendios.
Rural Cooperatives Magazine, January/February 2010
Creators: name: Habenstreit, Linda C.
name: Thompson, Stephen
name: Siemon, George L.
name: Pitman, Lynn
name: Liebrand, Carolyn
name: Wadsworth, James
name: Habenstreit, Linda C.
name: Thompson, Stephen
name: Siemon, George L.
name: Pitman, Lynn
name: Liebrand, Carolyn
name: Wadsworth, James
Publisher: name: Unknown
Year: 2010
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features- A 'Green Miracle'; Flour Power; Organic dairy market also hurt by low prices; Co-ops can thrive in uncertain times; Dairy co-op survey reveals financial performance trends; State cooperative councils adapting to help members in turbulent times
Inverse Problems in Magnetohydrodynamics: Theoretical and Experimental Aspects
Creators: name: Stefani, Frank
name: Gundrum, Thomas
name: Gerbeth, Gunter
name: Guenther, Uwe
name: Xu, Mingtian
Publisher: name: arXiv
Year: 2003
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We consider inverse problems related to the velocity reconstruction in electrically conducting fluids from externally measured magnetic fields. The underlying theory is presented in the framework of the integral equation approach to homogeneous dynamos in finite domains, which can be cast into a linear inverse problem in case that the magnetic Reynolds number is not too large. Some mathematical problems of the inversion, including the uniqueness problem in the sphere and a paradigmatic isospectrality problem for mean-field dynamos, are touched upon. For practical purposes, the inversion is carried out with the help of Tikhonov regularization using a quadratic functional of the velocity field as penalty function. For the first time, we present results of an experiment in which the three-dimensional velocity field of a propellor driven flow in a liquid metal is reconstructed by a contactless inductive measuring technique.
description: 8 pages, submitted to "Inverse Problems in Engineering"
Rural Cooperatives Magazine
Creators: name: Reynolds, Bruce J.
name: Thompson, Stephen
name: Pike, Sarah
name: Czech, Adam
name: Gray, Thomas W.
name: Hogeland, Julie A.
name: Pitman, Lynn
name: Nathan, Joe
name: Reynolds, Bruce J.
name: Thompson, Stephen
name: Pike, Sarah
name: Czech, Adam
name: Gray, Thomas W.
name: Hogeland, Julie A.
name: Pitman, Lynn
name: Nathan, Joe
Publisher: name: Unknown
Year: 2011
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features- Ownership succession crucial for rural america; Groomed for success; Expanding your customer base; Climbing the hill; Agriculture of the Middle: Opportunity for co-ops; Tomato co-ops help craft better food safety standards; Sailing turbulent seas; Co-op ideas can help education
Disrupting heteronormativity in schools
Creators: name: Chamberlain, James
name: Kothlow, Alysha
Publisher: name: The University of British Columbia
Year: 2012

description: The purpose of this research study was to examine the successes, challenges and actions of teacher leaders and administrators as they worked to disrupt heteronormativity. Our goal was to become more aware of how administrators and teacher leaders can create positive and equitable school experiences for all, irrespective of sexuality and gender identity. Specifically, the proposed research sought to answer the following questions: How is educational leadership discussed in literature with regards to the disruption of heteronormativity in schools? In what ways have recently retired educators led to disrupt heteronormativity in public schools? What factors contributed to the success/breakdown of these intended disruptions? What recommendations can be made to administrators and teacher leaders to help them disrupt heteronormativity in their schools? This study also sought to make recommendations to educators based on the findings from interviewees. Five interviews were conducted with teacher leaders and administrators who had recently retired from the profession. The researchers analyzed interview transcriptions for emergent themes and for themes prevalent in literature, such as fear and silence, policing of administrators, policing of heteronormativity by administrators, and opportunities for heteronormative disruptions. The study found that fear and silence on LGBTQ issues in schools remain prevalent in British Columbia. This study also documents strategies administrators and teacher leaders can use to break the silence on LBGTQ issues and lead for systemic change. A complete list of recommendations for educators to build more accepting schools for LGBTQ students, staff and families is included at the end of the paper.
A machine learning based plasticity model using proper orthogonal decomposition
Creators: name: Huang, Dengpeng
name: Fuhg, Jan Niklas
name: Weißenfels, Christian
name: Wriggers, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Data-driven material models have many advantages over classical numerical approaches, such as the direct utilization of experimental data and the possibility to improve performance of predictions when additional data is available. One approach to develop a data-driven material model is to use machine learning tools. These can be trained offline to fit an observed material behaviour and then be applied in online applications. However, learning and predicting history dependent material models, such as plasticity, is still challenging. In this work, a machine learning based material modelling framework is proposed for both elasticity and plasticity. The machine learning based hyperelasticity model is developed with the Feed forward Neural Network (FNN) directly whereas the machine learning based plasticity model is developed by using of a novel method called Proper Orthogonal Decomposition Feed forward Neural Network (PODFNN). In order to account for the loading history, the accumulated absolute strain is proposed to be the history variable of the plasticity model. Additionally, the strain-stress sequence data for plasticity is collected from different loading-unloading paths based on the concept of sequence for plasticity. By means of the POD, the multi-dimensional stress sequence is decoupled leading to independent one dimensional coefficient sequences. In this case, the neural network with multiple output is replaced by multiple independent neural networks each possessing a one-dimensional output, which leads to less training time and better training performance. To apply the machine learning based material model in finite element analysis, the tangent matrix is derived by the automatic symbolic differentiation tool AceGen. The effectiveness and generalization of the presented models are investigated by a series of numerical examples using both 2D and 3D finite element analysis.
Friedel oscillations in a two-band Hubbard model for CuO chains
Creators: name: Mori, M.
name: Tohyama, T.
name: Maekawa, S.
name: Riera, J. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Friedel oscillations induced by open boundary conditions in a two-band Hubbard model for CuO chains are numerically studied. We find that for physically realistic parameters and close to quarter filling, these oscillations have a 2k_F modulation according with experimental results on YBa_2Cu_3O_{7-delta}. In addition, we predict that, for the same parameters, as hole doping is reduced from quarter filling to half filling, Friedel oscillations would acquire a 4k_F modulation, typical of a strongly correlated electrons regime. The 4k_F modulation dominates also in the electron doped region. The range of parameters varied is very broad, and hence the results reported could apply to other cuprates and other strongly correlated compounds with quasi-one dimensional structures. On a more theoretical side, we stress the fact that the copper and oxygen subsystems should be described by two different Luttinger liquid exponents.
description: 7 pages, 7 eps figures
Aspects of Neutrino Mass Matrices
Creators: name: Frampton, Paul H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After an Introduction briefly describing the rise and fall of the three-zero texture of the Zee model, we discuss still-allowed two-zero textures for the Majorana three-neutrino mass matrix. Finally, a model with two right-handed neutrinos and two Dirac texture zeros is described (FGY model) which can relate CP violation in leptogenesis to CP violation in long-baseline neutrino oscillations.
description: 9 pages latex. Talk at Coral Gables 2003. Added references
WHTZ 1: A high excitation Planetary Nebula not a gaseous cocoon from runaway star HD 185806
Creators: name: Parker, Quentin A.
name: Dû, Pascal Le
name: Ritter, Andreas
name: Goodhew, Peter
name: Rasool, Sakib
name: Charbonnel, Stephane
name: Garde, Olivier
name: Mulato, Lionel
name: Petit, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present evidence that the nebular cocoon and bow-shock emission nebula putatively and recently reported as deriving from the 9th magnitude "runaway" star HD 185806 is the previously discovered but obscure planetary nebula WHTZ 1 (Ra 7). It has a Gaia DR3 G~16 blue ionizing star at its geometric centre. We present imagery, spectroscopy, other data and arguments to support that this emission source is a high excitation Planetary Nebula not a stellar wind bow shock.
description: 8 pages, 6 figure, accepted for publication in MNRAS
Ateralphus senilis
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Ateralphus
Ateralphus senilis

description: 4. Ateralphus senilis (Bates, 1862)
Type locality — Brazil, Pará: Óbidos. (MNHN). Distribution — French Guiana, Brazil (Pará, Maranhão, Mato Grosso), Peru, Bolivia.
 Alphus senilis Bates, 1862: 123; Zajciw, 1967a: 10 (distr.).
 Ateralphus senilis; Restello et al., 2001: 300.
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
News & Views on a new search for the doubly charmed baryon $Ξ_{cc}^+$ at the LHC
Creators: name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Invited "News & Views" for the journal, SCIENCE CHINA: Physics, Mechanics & Astronomy, on a recently new search for the doubly charmed baryon $Ξ_{cc}^+$ at the LHC, which is done by the LHCb Collaboration, arXiv:1909.12273.
description: 2 pages
BilgehanBozkurtConferenceProceedingsMEA
Creators: name: Bozkurt, Bilgehan
Publisher: name: figshare
Year: 2021
Subjects: subject: 150503 Marketing Management (incl. Strategy and Customer Relations)
subject: FOS: Economics and business

description: Bozkurt, B. (2015). Customer-based brand equity development for tablet chocolate consumption by women. International Conference on Modern Research in Management, Economics and Accounting, Istanbul. ISBN: 978-9944-0203-10-2 https://www.meaconf.org/
Numerical study of track distortion in the Large Prototype TPC with end-plate based on bulk Micromegas
Creators: name: Bhattacharya, Deb Sankar
name: Bhattacharya, Purba
name: Mukhopadhyay, Supratik
name: Majumdar, Nayana
name: Sarkar, Sandip
name: Bhattacharya, Sudeb
name: Colas, Paul
name: Attié, David
name: Ganjour, Serguei
name: Bhattacharya, Aparajita
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The present $\mathrm{R}\&\mathrm{D}$ activities for the International Large Detector Time Projection Chamber (ILD-TPC) concern the adoption of the micro pattern devices for the gaseous amplification stage. Seven Micromegas modules which are commissioned on the end-plate of a Large Prototype TPC (LPTPC) at DESY, were tested with a 5 GeV electron beam, under a 1 T magnetic field. During experiments, reduced signal sensitivity as well as distortion in the reconstructed track was observed at the boundaries of these modules. Electrostatic field inhomogeneity near the module boundaries was considered to be the possible major reason behind these observations. In the present work, this hypothesis has been explored using the Garfield simulation framework. It has been possible to contain the computational complexity of the problem with suitable simplifications. Qualitative and quantitative agreements with experimental results have been achieved. Possibility of mitigating the problems has been proposed using the same simulation framework.
A Modular, Tendon Driven Variable Stiffness Manipulator with Internal Routing for Improved Stability and Increased Payload Capacity
Creators: name: Walker, Kyle L.
name: Partridge, Alix J.
name: Chen, Hsing-Yu
name: Ramachandran, Rahul R.
name: Stokes, Adam A.
name: Tadakuma, Kenjiro
name: da Silva, Lucas Cruz
name: Giorgio-Serchi, Francesco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Stability and reliable operation under a spectrum of environmental conditions is still an open challenge for soft and continuum style manipulators. The inability to carry sufficient load and effectively reject external disturbances are two drawbacks which limit the scale of continuum designs, preventing widespread adoption of this technology. To tackle these problems, this work details the design and experimental testing of a modular, tendon driven bead-style continuum manipulator with tunable stiffness. By embedding the ability to independently control the stiffness of distinct sections of the structure, the manipulator can regulate it's posture under greater loads of up to 1kg at the end-effector, with reference to the flexible state. Likewise, an internal routing scheme vastly improves the stability of the proximal segment when operating the distal segment, reducing deviations by at least 70.11%. Operation is validated when gravity is both tangential and perpendicular to the manipulator backbone, a feature uncommon in previous designs. The findings presented in this work are key to the development of larger scale continuum designs, demonstrating that flexibility and tip stability under loading can co-exist without compromise.
description: To be presented at ICRA 2024, Yokohama, Japan. 6 pages
The motivic Thom isomorphism
Creators: name: Morava, Jack
Publisher: name: arXiv
Year: 2003
Subjects: subject: Algebraic Topology (math.AT)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 11G, 19F, 57R, 81T

description: The existence of a good theory of Thom isomorphisms in some rational category of mixed Tate motives would permit a nice interpolation between ideas of Kontsevich on deformation quantization, and ideas of Connes and Kreimer on a Galois theory of renormalization, mediated by Deligne's ideas on motivic Galois groups.
description: Talk at the Newton Institute, December 2002; final version, to appear in the Conference Proceedings
The impact of crop rotation and land fragmentation on farm productivity in Albania
Creators: name: Ciaian, Pavel
name: Rajcaniova, Miroslava
name: Guri, Fatmir
name: Zhllima, Edvin
name: Shahu, Edmira
name: Ciaian, Pavel
name: Rajcaniova, Miroslava
name: Guri, Fatmir
name: Zhllima, Edvin
name: Shahu, Edmira
Publisher: name: Unknown
Year: 2018
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Farm Management
subject: Land Economics/Use
subject: land fragmentation
subject: crop rotation
subject: stochastic production frontier
subject: farm efficiency

description: In this study, we estimate the impact of land fragmentation and crop rotation on farm productivity in rural Albania. We employ a stochastic production frontier estimation approach to survey data collected among farm households in Albania in 2013. Our estimates suggest that land fragmentation improves farm efficiency, probably because it permits a better use of household labour during the production seasons. Our estimates also suggest that crop rotation increases farm efficiency. However, the impact of land fragmentation on on farm efficiency is far more pronounced.
description: https://doi.org/10.7896/j.1815
Cosmological Studies from HSC-SSP Tomographic Weak Lensing Peak Abundances
Creators: name: Liu, Xiangkun
name: Yuan, Shuo
name: Pan, Chuzhong
name: Zhang, Tianyu
name: Wang, Qiao
name: Fan, Zuhui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform weak lensing tomographic peak studies using the first-year shear data from Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) survey. The effective area used in our analyses after field selection, mask and boundary exclusions is $\sim 58 °^2$. The source galaxies are divided into low- and high-redshift bins with $0.2\le z_p\le0.85$ and $0.85\le z_p\le1.5$, respectively. We utilize our halo-based theoretical peak model including the projection effect of large-scale structures to derive cosmological constraints from the observed tomographic high peak abundances with the signal-to-noise ratio in the range of $ν_{\rm N}=[3.5,5.5]$. These high peaks are closely associated with the lensing effects of massive clusters of galaxies. Thus the inclusion of their member galaxies in the shear catalog can lead to significant source clustering and dilute their lensing signals. We account for this systematic effect in our theoretical modelling. Additionally, the impacts of baryonic effects, galaxy intrinsic alignments, as well as residual uncertainties in shear and photometric redshift calibrations are also analyzed. Within the flat $Λ$CDM model, the derived constraint is $S_8=0.758_{-0.076}^{+0.033}$ and $0.768_{-0.057}^{+0.030}$ with the source clustering information measured from the two cluster catalogs, CAMIRA and WZL, respectively. The asymmetric uncertainties are due to the different degeneracy direction of $(Ω_{\rm m}, σ_8)$ from high peak abundances comparing to that from the cosmic shear two-point correlations which give rise approximately the power index $α=0.5$. Fitting to our constraints, we obtain $α\approx 0.38$ and $Σ_8=0.772_{-0.032}^{+0.028}$ (CAMIRA) and $0.781_{-0.033}^{+0.028}$ (WZL). In comparison with the results from non-tomographic peak analyses, the $1σ$ uncertainties on $Σ_8$ are reduced by a factor of $\sim1.3$.
description: 19 pages, 11 figures, accepted for publication in MNRAS
Boosting gravitational waves: a review of kinematic effects on amplitude, polarization, frequency and energy density
Creators: name: Cusin, Giulia
name: Pitrou, Cyril
name: Bonvin, Camille
name: Barrau, Aurélien
name: Martineau, Killian
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We review the kinematic effects on a gravitational wave due to either a peculiar motion of the astrophysical source emitting it or a local motion of the observer. Working in the context of general relativity, we show at fully non-linear order in velocity, that the amplitude of the wave is amplified by the Doppler factor in the case in which the source moves with respect to a reference frame, while it is invariant if the observer moves (with respect to a reference observer). However, the observed specific intensity transforms in the same way under a boost of the source or of the observer. We also show at fully non-linear order that under a boost (of either source or observer), the polarization tensor is rotated in the same way the wave direction is rotated by aberration, such that the only net effect of a boost on polarization is to change the phase of the helicity components. We apply these results to a wave emitted by a binary system of compact objects in the cosmological context.
description: 39 pages, 5 figures
A Compact Dual-band Bandstop Filter Based on Fractal Microstrip Resonators
Creators: name: Ali, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Fractal geometries are found attractive to designers seeking for compact size microwave circuits and antennas. In this paper, Peano fractal based open-loop resonators are
adopted to design dual-band microstrip band-stop filters (PSFs). The suggested filter structure is essentially based on that of the conventional open-loop rectangular microstrip resonators. The resonators of the proposed PSF structure are made in the form of Peano fractal geometry with
different iteration levels. Many filters have been modeled, and their performances have been evaluated using a commercially available full-wave electromagnetic simulator. Each of the modeled filter structures contains two pairs of open loop fractal based resonators with different iteration
levels. The lower frequency band-stop performance is attributed to the resonators with higher iteration level while the higher frequency band-stop performance is due to the resonators with lower iteration level. Simulation results for the proposed microstrip filters have confirmed the validity to realize compact dual-band narrow-stopband microstrip filters. A comparative study implies that higher size reduction of the realized filter has taken place as the iteration level of the fractal microstrip open-loop resonators becomes higher. The results presented show that the
fractal-based resonators can be used to construct compact narrow-stopband filters suitable for a wide variety of the recently available communication applications.
Ateralphus subsellatus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Ateralphus
Ateralphus subsellatus

description: 5. Ateralphus subsellatus (White, 1855)
Type locality — Brazil. (BMNH). Distribution — Brazil (Bahia to Rio Grande do Sul), Paraguay, Argentina (Catamarca, Salta, Misiones).
 Alphus subsellatus White, 1855: 375; Bates, 1862: 122; Lima, 1930: 67 (hosts); 1936: 305 (hosts); Carvalho & Carvalho, 1939: 50 (distr.); Bosq, 1945: 53 (distr.); Lima, 1955: 131 (hosts); Duffy, 1960: 224 (biol.); Silva et al., 1968: 398 (hosts); Viana, 1972: 369 (distr.); Di Iorio, 1997a: 153, 157 (hosts); Monné, 2001b: 40 (cat. hosts); Di Iorio in Cordo et al., 2004: 58 (hosts).
 Ateralphus subsellatus; Restello et al., 2001: 300, fig. 12.
 Alphus canescens Bates, 1862: 122; Bruch, 1912: 213 (cat.); Lima, 1930: 67 (hosts); 1936: 305 (hosts); Bridarolli, 1944: 58 (distr.); Bosq, 1945: 52 (distr.); Buck, 1959: 603 (distr.); Silva et al., 1968: 398 (hosts); Viana, 1972: 368 (distr.).
Type locality — Brazil, Rio de Janeiro. (MNHN).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Self-gravitating perfect-fluid tori around black holes: Bifurcations, ergoregions, and geometrical properties
Creators: name: Dyba, Wojciech
name: Kulczycki, Wojciech
name: Mach, Patryk
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate models of stationary, selfgravitating, perfect-fluid tori (disks) rotating around black holes, focusing on geometric properties of spacetime. The models are constructed within the general-relativistic hydrodynamics, assuming differential (Keplerian) rotation of the fluid. We discuss a parametric bifurcation occurring in the solution space, different possible configurations of ergoregions (including toroidal ergoregions associated with the tori), nonmonotonicity of the circumferential radius, as well as the impact of the torus gravity on the location of the innermost stable circular orbit.
description: 16 pages, 25 figures, 3 tables
Robust Supermassive Black Hole Spin Mass-Energy Characteristics: A New Method and Results
Creators: name: Daly, Ruth A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The rotational properties of astrophysical black holes are fundamental quantities that characterization the black holes. A new method to empirically determine the spin mass-energy characteristics of astrophysical black holes is presented and applied here. Results are obtained for a sample of 100 supermassive black holes with collimated dual outflows and redshifts between about zero and two. An analysis indicates that about two-thirds of the black holes are maximally spinning, while one-third have a broad distribution of spin values; it is shown that the same distributions describe the quantity $\rm{(M_{rot}/M_{irr})}$. The new method is applied to obtain the black hole spin mass-energy, $\rm{M_{spin}}$, available for extraction relative to: the maximum possible value, the irreducible black hole mass, and the total black hole mass, $\rm{M_{dyn}}$. The total energy removed from the black hole system and deposited into the circumgalactic medium via dual outflows over the entire outflow lifetime of the source, $\rm{E_T}$, is studied relative to $\rm{M_{dyn}}$ and relative to the spin energy available per black hole, $\rm{E_{spin}/(M_{\odot}c^2)}$. The mean value of $\rm{Log(E_T/M_{dyn})}$ is about $(-2.47\pm 0.27)$. Several explanations of this and related results are discussed. For example, the energy input to the ambient gas from the outflow could turn off the accretion, or the impact of the black hole mass loss on the system could destabilize and terminate the outflow. The small values and restricted range of values of $\rm{Log(E_T/M_{dyn})}$ and $\rm{Log(E_T/E_{spin})}$ could suggest that these are fundamental properties of the primary process responsible for producing the dual collimated outflows.
description: 16 pages, 20 figures, 3 tables
Ateralphus variegatus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Ateralphus
Ateralphus variegatus

description: 6. Ateralphus variegatus (Mendes, 1938)
Type locality — Brazil, Goiás: Campinas. (MZSP). Distribution — Brazil (Espírito Santo to Santa Catarina, Goiás).
 Alphus variegatus Mendes, 1938b: 120, fig. 3; Zikán & Wygodzinsky, 1948: 48 (type).
 Ateralphus variegatus; Restello et al., 2001: 301.
  Azygocera Aurivillius, 1920
 Azygocera Aurivillius, 1920: 386; Porter, 1932a: 40.
 Type­species — Zygocera picturata Fairmaire & Germain, 1859 (original designation).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Health FoodsFinding Their Way Onto Supermarket Shelves
Creators: name: Brown, Judy
name: Brown, Judy
Publisher: name: Unknown
Year: 1981
Subjects: Food Consumption/Nutrition/Food Safety

description: Consumer demand for health foods-foods with minimal processing and that are chemical and additive free-is leading the food industry to emphasize nutrition. As a result, more and more supermarkets are adding health food departments to their operations. Safeway, the Nation's largest supermarket chain, plans to add health food departments to 200 stores this year, and one food industry researcher predicts that "the food bywords of the next 10 to 15 years will be nutrition and safety:' and that these concerns will have major impacts on the future of the food industry.
The impact of COVID-19 Pandemic on Tourism Industry: A Statistical Review in European Countries
Creators: name: Salehnia, Narges
name: Seyyed Mohammad Ghaem Zabihi
name: Safarzaei, Khashayar
Publisher: name: figshare
Year: 2021
Subjects: Economics

description: COVID-19 has become a new global risk in a context that has already weaken the world economy. the COVID-19 outbreak comes on the top of a rather uncertain scenario of continued geopolitical, social and trade tensions, post-Brexit effects, and an uneven performance among major outbound travel markets. Considering the evolving nature of the situation, it is too early to estimate the full impact of the COVID-19 on tourism industry. The impact of the COVID-19 outbreak will undoubtedly be felt across the whole tourism value chain. All tourist industry is expected to be affected. This calls for support and recovery measures for the tourism sector in the most affected countries. Therefore, the purpose of this study is discussing about the impact of the COVID-19 pandemic on the tourism industry. The results of this study show that the prevalence of Corona affects income growth negatively and also the number of tourists entering the tourism industry worldwide. After SARS epidemic in 2003 and the global economic crisis of 2009, this is the biggest tangible crisis in the tourism industry, which has been introduced to three scenarios and made some special suggestions. This research has been conducted by relying on journals, historical records, newspaper articles, news press, World Health Organization (WHO) statistics and World Tourism organization (UNWTO) statistics on COVID-19 incidences in tourism. Secondary research was adopted in which secondary collected data through a comprehensive literature review.
Deep Learning and genetic algorithms for cosmological Bayesian inference speed-up
Creators: name: Gómez-Vargas, Isidro
name: Vázquez, J. Alberto
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this paper, we present a novel approach to accelerate the Bayesian inference process, focusing specifically on the nested sampling algorithms. Bayesian inference plays a crucial role in cosmological parameter estimation, providing a robust framework for extracting theoretical insights from observational data. However, its computational demands can be substantial, primarily due to the need for numerous likelihood function evaluations. Our proposed method utilizes the power of deep learning, employing feedforward neural networks to approximate the likelihood function dynamically during the Bayesian inference process. Unlike traditional approaches, our method trains neural networks on-the-fly using the current set of live points as training data, without the need for pre-training. This flexibility enables adaptation to various theoretical models and datasets. We perform simple hyperparameter optimization using genetic algorithms to suggest initial neural network architectures for learning each likelihood function. Once sufficient accuracy is achieved, the neural network replaces the original likelihood function. The implementation integrates with nested sampling algorithms and has been thoroughly evaluated using both simple cosmological dark energy models and diverse observational datasets. Additionally, we explore the potential of genetic algorithms for generating initial live points within nested sampling inference, opening up new avenues for enhancing the efficiency and effectiveness of Bayesian inference methods.
description: 16 pages, 4 figures; matches the version published in Physical Review D
Influence of impurity-scattering on tunneling conductance in d-wave superconductors with broken time reversal symmetry
Creators: name: Kitaura, N.
name: Itoh, H.
name: Asano, Y.
name: Tanaka, Y.
name: Inoue, J.
name: Tanuma, Y.
name: Kashiwaya, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Effects of impurity scattering on tunneling conductance in dirty normal-metal/insulator/superconductor junctions are studied based on the Kubo formula and the recursive Green function method. The zero-bias conductance peak (ZBCP) is a consequence of the unconventional pairing symmetry in superconductors. The impurity scattering in normal metals suppresses the amplitude of the ZBCP. The degree of the suppression agrees well with results of the quasiclassical Green function theory. When superconductors have $d$+is-wave pairing symmetry, the time-reversal symmetry is broken in superconductors and the ZBCP splits into two peaks. The random impurity scattering reduces the height of the two splitting peaks. The position of the splitting peaks, however, almost remains unchanged even in the presence of the strong impurity scattering. Thus the two splitting peaks never merge into a single ZBCP.
description: 12 pages, 5 figures, using jpsj2.cls and overcite.sty
Foreign Direct Investment-An Overview
Creators: name: Connor, John M.
name: Connor, John M.
Publisher: name: Unknown
Year: 1981
Subjects: Financial Economics

description: The United States has long been the leader in making private foreign direct investments (FDI), although American firms now own slightly less than half of the world's stock of FDI, according to a 1978 United Nations report. This is down from a peak of over 60 percent in the 1950's. But, during the last decade, the United States has also become the world's largest host country for FDI, with investments in the food and tobacco manufacturing industries accounting for about 18 percent of total manufacturing FDI in 1979.
A hybrid H1×H(curl) finite element formulation for a relaxed micromorphic continuum model of antiplane shear
Creators: name: Sky, Adam
name: Neunteufel, Michael
name: Münch, Ingo
name: Schöberl, Joachim
name: Neff, Patrizio
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Relaxed micromorphic continuum
subject: Edge elements
subject: Nédélec elements
subject: Curl based energy
subject: Mixed formulation
subject: Combined Hilbert spaces
subject: Metamaterials
subject: 690

description: One approach for the simulation of metamaterials is to extend an associated continuum theory concerning its kinematic equations, and the relaxed micromorphic continuum represents such a model. It incorporates the Curl of the nonsymmetric microdistortion in the free energy function. This suggests the existence of solutions not belonging to H1, such that standard nodal H1-finite elements yield unsatisfactory convergence rates and might be incapable of finding the exact solution. Our approach is to use base functions stemming from both Hilbert spaces H1 and H(curl), demonstrating the central role of such combinations for this class of problems. For simplicity, a reduced two-dimensional relaxed micromorphic continuum describing antiplane shear is introduced, preserving the main computational traits of the three-dimensional version. This model is then used for the formulation and a multi step investigation of a viable finite element solution, encompassing examinations of existence and uniqueness of both standard and mixed formulations and their respective convergence rates.
description: Computational mechanics;Vol. 68. 2021, pp 1–24
Dispersive instabilities in Passively Mode-Locked Integrated External-Cavity Surface-Emitting Lasers
Creators: name: Schelte, Christian
name: Hessel, Denis
name: Javaloyes, Julien
name: Gurevich, Svetlana V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We analyze the dynamics of passively mode-locked integrated external-cavity surface-emitting Lasers (MIXSELs) using a first-principle dynamical model based upon delay algebraic equations. We show that the third order dispersion stemming from the lasing micro-cavity induces a train of decaying satellites on the leading edge of the pulse. Due to the nonlinear interaction with carriers, these satellites may get amplified thereby destabilizing the mode-locked states. In the long cavity regime, the localized structures that exist below the lasing threshold are found to be deeply affected by this instability. As it originates from a global bifurcation of the saddle-node infinite period type, we explain why the pulses exhibit behaviors characteristic of excitable systems. Using the multiple time-scale and the functional mapping methods, we derive rigorously a master equation for MIXSELs in which third order dispersion is an essential ingredient. We compare the bifurcation diagram of both models and assess their good agreement.
description: 14 pages, 11 figures, submitted to APS
Azygocera picturata
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Azygocera
Azygocera picturata

description: 1. Azygocera picturata (Fairmaire & Germain, 1859)
Type locality — Chile, Sud de Chiloé. (MNHN). Distribution — Chile, Argentina (Neuquén, Santa Cruz).
 Zygocera picturata Fairmaire & Germain, 1859: 518; Philippi, 1887: 775 (cat.); Porter, 1921: 156, fig. 11b.
 Azygocera picturata; Aurivillius, 1920: 387; Porter, 1932a: 41, fig. 9; 1939b: 231; Bosq, 1943b: 110 (distr.); 1953: 84 (distr.); Ringuelet, 1955: 100 (distr.); Peña, 1960: 61; Barriga et al., 1993: 69 (hosts); Monné, 2001b: 40 (cat. hosts).
  Criopsis Thomson, 1860
 Criopsis Thomson, 1860: 341; 1864: 21, 352; Lacordaire, 1872: 755.
 Type­species — Criopsis curtus Thomson, 1860 (monotypy).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553