cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Weak Lensing Mass Reconstruction using Wavelets
Creators: name: Starck, Jean-Luc
name: Pires, Sandrine
name: Refregier, Alexandre
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents a new method for the reconstruction of weak lensing mass maps. It uses the multiscale entropy concept, which is based on wavelets, and the False Discovery Rate which allows us to derive robust detection levels in wavelet space. We show that this new restoration approach outperforms several standard techniques currently used for weak shear mass reconstruction. This method can also be used to separate E and B modes in the shear field, and thus test for the presence of residual systematic effects. We concentrate on large blind cosmic shear surveys, and illustrate our results using simulated shear maps derived from N-Body Lambda-CDM simulations with added noise corresponding to both ground-based and space-based observations.
description: Accepted manuscript with all figures can be downloaded at: http://jstarck.free.fr/aa_wlens05.pdf and software can be downloaded at http://jstarck.free.fr/mrlens.html
Drugs as a Rational Choice: Preliminary Explorations of Marijuana Consumption in Australia
Creators: name: Zhao, Xueyan
name: Zhao, Xueyan
Publisher: name: Unknown
Year: 2003
Subjects: subject: Demand and Price Analysis
subject: illicit drugs
subject: marijuana demand
subject: probit model

description: Although an illegal commodity, Australian marijuana market is estimated to be in the size of as large as $5 billion annually. Understanding the consumer behaviour of illicit drug consumption is essential in drug policy debate. Using micro unit data from the most recent National Drug Strategy Household Surveys, ordered Probit model is estimated to study the effects of some social, economic and demographic factors on the frequency of an individual’s marijuana consumption. A sequential model is also estimated that examines separately the decisions of whether to participate in regular consumption and how often to consume the drug. Results indicate that some factors may have opposite effects on the two decisions.
Using open data for research assessment in the Netherlands
Creators: name: de Zwaan, Matthijs
Publisher: name: Zenodo
Year: 2024
Subjects: Barcelona Declaration on Open Research Information

description: In 2023, psychological research at a consortium of eight Dutch universities was evaluated following the Strategy Evaluation Protocol (SEP). The SEP lays out the procedure and requirements to evaluate research at Dutch public institutions, similar to the Research Excellence Framework in the UK. The research intelligence (RI) team at the Vrije Universiteit Amsterdam provided support in the preparation of the joint assessment.

The consortium, following a proposal from the RI team, decided to combine closed data from local research information systems with open metadata from OpenAlex for a bibliometric analysis of its research output. In this presentation, I will describe why and how we came to this decision; what problems we encountered and how we solved them (or didn’t); present some of the analyses we did; and discuss the reactions from the consortium and the assessment committee to the analysis, all focusing on the use of open data.

This case shows how using open research information need not be an all-or-nothing decision. By combining open and closed data, it is possible to manage discussions about reliability and quality of new open data sources, while at the same familiarising a new group of people with these sources and the benefits that they can bring.

The presentation is available online at https://mtthsdzwn.github.io/20240923-Sorbonne/
description: Presentation at the Paris Conference on Open Research Information (Sept 23-24 2024) in Session 2: Universities - data and practical implementations
Level statistics and Anderson delocalization in two-dimensional granular materials
Creators: name: Zhang, Ling
name: Wang, Yinqiao
name: Zheng, Jie
name: Sun, Aile
name: Sun, Xulai
name: Wang, Yujie
name: Schirmacher, Walter
name: Zhang, Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Contrary to the theoretical predictions that all waves in two-dimensional disordered materials are localized, Anderson localization is observed only for sufficiently high frequencies in an isotropically jammed two-dimensional disordered granular packing of photoelastic disks. More specifically, we have performed an experiment in analyzing the level statistics of normal mode vibrations. We observe delocalized modes in the low-frequency boson-peak regime and localized modes in the high frequency regime with the crossover frequency just below the Debye frequency. We find that the level-distance distribution obeys Gaussian-Orthogonal-Ensemble (GOE) statistics, i.e. Wigner-Dyson distribution, in the boson-peak regime, whereas those in the high-frequency regime Poisson statistics is observed. The scenario is found to coincide with that of harmonic vibrational excitations in three-dimensional disordered solids.
description: 6 pages, 4figures
The Normative Efficiency Ranking of Output and Export Subsidies under Costly and Imperfect Enforcement
Creators: name: Giannakas, Konstantinos
name: Giannakas, Konstantinos
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Agricultural policy
subject: export subsidies
subject: output subsidies
subject: enforcement
subject: noncompliance
subject: transfer efficiency

description: This paper builds on the literature on agricultural policy analysis under costly and imperfect enforcement by analyzing the effect of enforcement costs and noncompliance on the relative transfer efficiency of output and export subsidies. Analytical results show that, in addition to changing the incidence of output and export subsidies, relaxing the assumption of perfect and costless enforcement found in the traditional analysis of these policy instruments can affect their relative efficiency in transferring income to producers. The effect of enforcement issues is shown to depend on the way export subsidies are being administered and the size of the exporting country.
Demo6 - Manolo Pérez, Pablo Casanova-Salas, Jesús Gimeno, Cristina Portalés
Creators: name: Pérez, Manolo
Publisher: name: figshare
Year: 2020
Subjects: subject: 80111 Virtual Reality and Related Simulation
subject: FOS: Computer and information sciences

description: Title: Virtual Loom, from Historical Fabrics to Interactive 3D Models
Authors: Manolo Pérez, Pablo Casanova-Salas, Jesús Gimeno, Cristina Portalés
Detailed analysis of the cell-inactivation mechanism by accelerated protons and light ions
Creators: name: Kundrát, Pavel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Published survival data for V79 cells irradiated by monoenergetic protons, helium-3, carbon, and oxygen ions and for CHO cells irradiated by carbon ions have been analyzed using the probabilistic two-stage model of cell inactivation. Three different classes of DNA damages formed by traversing particles have been distinguished, namely severe single-track damages which might lead to cell inactivation directly, less severe damages where cell inactivation is caused by their combinations, and damages of negligible severity that can be repaired easily. Probabilities of single ions to form these damages have been assessed in dependence on their linear energy transfer (LET) values. Damage induction probabilities increase with atomic number and LET. While combined damages play crucial role at lower LET values, single-track damages dominate in high-LET regions. The yields of single-track lethal damages for protons have been compared with the Monte Carlo estimates of complex DNA lesions, indicating that lethal events correlate well with complex DNA double-strand breaks. The decrease in the single-track damage probability for protons of LET above approx. 30 keV/$μ$m, suggested by limited experimental evidence, is discussed, together with the consequent differences in the mechanisms of biological effects between protons and heavier ions. Applications of the results in hadrontherapy treatment planning are outlined.
description: submitted to Physics in Medicine and Biology
Procedimento para análise de decisão quanto à prevenção de doenças em animais: uma aplicação da Teoria dos Jogos
Creators: name: Silveira, Luciana Torrezan
name: Burnquist, Heloisa Lee
name: Silveira, Luciana Torrezan
name: Burnquist, Heloisa Lee
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Game Theory
subject: Foot-and-mouth disease
subject: Meat sector
subject: Benefit/cost analysis
subject: Decision making theory

description: The basic hypothesis of this study is that producers do not realize, individually, the importance of adopting preventive measures, even aware of the economic risks for them and for the local economy, because outbreaks of some diseases are not frequent. Moreover, the presence of externalities makes the action of one producer regarding sanitary measures of the herd affect other producers in the same region, which cannot be perceived by them, either. This study aims to develop a theoretical procedure to infer about strategic decisions taken by producers to prevent animal disease in their herds, in face of the risk of contamination. The development of the model is based on the Game Theory, and the cost-benefit analysis as support for decision-making process. After modeling the problem and determining the equilibriums, they are used to elaborate inferences about possible actions of the government through economic incentives (such as indemnities and fines) to encourage the prevention. Then, the theoretical model is applied to a specific case of a foot-and-mouth disease (FMD) outbreak in Brazil. Results indicate that with the absence of a differentiated market for non-vaccinated animals, the game equilibrium tends to the situation in which decisions of producer are to vaccinate their herd, suggesting that government intervention is not necessary. In practice, however, the Brazilian government uses incentive policies for cattle vaccination since some producers do not vaccinate their animals, despite their awareness of the risks, which suggests lack of rationality.
Demo 2 - Tobias G. Palma
Creators: name: Palma, Tobias G.
Publisher: name: figshare
Year: 2020
Subjects: subject: 80111 Virtual Reality and Related Simulation
subject: FOS: Computer and information sciences

description: Authors: Tobias G. Palma
Title: Hands-off Interactive Storytelling; Intuitive Agency in an Immersive Cinematic Film
OILADA SOG'LOM BOLA TARBIYALASHDAGI O'ZARO  MUNOSABATLAR
Creators: name: Toxirova, Dilshoda
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolla avvalo “Ota - Ona bolasini” tarbiyasiga bee’tibor bo`lmasligi lozimligi haqida sodda tilda yoritilgan.
Neutrino-Driven Supernovae: an Accretion Instability in a Nuclear Physics Controlled Environment
Creators: name: Janka, H. -T.
name: Buras, R.
name: Joyanes, F. S. Kitaura
name: Marek, A.
name: Rampp, M.
name: Scheck, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: New simulations demonstrate that low-mode, nonradial hydrodynamic instabilities of the accretion shock help starting hot-bubble convection in supernovae and thus support explosions by the neutrino-heating mechanism. The prevailing conditions depend on the high-density equation of state which governs stellar core collapse, core bounce, and neutron star formation. Tests of this sensitivity to nuclear physics variations are shown for spherically symmetric models. Implications of current explosion models for r-process nucleosynthesis are addressed.
description: 9 pages, 4 figures, contribution to Nuclei in the Cosmos 8, to appear in Nucl. Phys. A
Valoração de atributos de qualidade em pêssegos comercializados no estado de São Paulo
Creators: name: Lima, Lilian Maluf De
name: Caixeta Filho, Jose Vicente
name: Kassouf, Ana Lucia
name: Amorim, Lilian
name: Lima, Lilian Maluf De
name: Caixeta Filho, Jose Vicente
name: Kassouf, Ana Lucia
name: Amorim, Lilian
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: Peach
subject: hedonic price
subject: evaluation
subject: quality
subject: post-harvest
subject: losses.

description: Econometric models were developed to estimate the implicit prices for selected quality attributes of fresh peaches commercialized in the state of Sao Paulo. Such estimation is conducted in two stages of the distribution chain, namely, wholesale and retail sales. Data on the price and quality attributes (such as color, size, varieties and types of damages) of fresh peaches were obtained from cross-sectional data in different time periods. The estimation of Hedonic Prices is proposed as a method to evaluate post-harvest price variations from wholesale to retail sales. The results obtained allowed us to identify the gains accrued in each stage, deriving from the improvement in the product quality attributes.
Specific heat of the $S = 1$ spin-dimer antiferromagnet Ba$_3$Mn$_2$O$_8$ in high magnetic fields
Creators: name: Tsujii, H.
name: Andraka, B.
name: Uchida, M.
name: Tanaka, H.
name: Takano, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have measured the specific heat of the coupled spin-dimer antiferromagnet Ba$_3$Mn$_2$O$_8$ to 50 mK in temperature and to 29 T in the magnetic field. The experiment extends to the midpoint of the field region (25.9 T $\leq H \leq$ 32.3 T) of the magnetization plateau at 1/2 of the saturation magnetization, and reveals the presence of three ordered phases in the field region between that of the magnetization plateau and the low-field spin-liquid region. The exponent of the phase boundary with the thermally disordered region is smaller than the theoretical value based on the Bose-Einstein condensation of spin triplets. At zero field and 29 T, the specific-heat data show gapped behaviors characteristic of spin liquids. The zero-field data indicate that the gapped triplet excitations form two levels whose energies differ by nearly a factor of two. At least the lower level is well localized. The data at 29 T reveal that the low-lying excitations at the magnetization plateau are weakly delocalized.
description: 6 pages, 5 figures, revised version
Complexes of stationary domain walls in the resonantly forced Ginsburg-Landau equation
Creators: name: Barashenkov, I. V.
name: Woodford, S. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The parametrically driven Ginsburg-Landau equation has well-known stationary solutions -- the so-called Bloch and Neel, or Ising, walls. In this paper, we construct an explicit stationary solution describing a bound state of two walls. We also demonstrate that stationary complexes of more than two walls do not exist.
description: 10 pages, 2 figures, to appear in Physical Review E
Vortex-line topology in iron-based superconductors with and without second-order topology
Creators: name: Kheirkhah, Majid
name: Yan, Zhongbo
name: Marsiglio, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The band topology of a superconductor is known to have profound impact on the existence of Majorana zero modes in vortices. As iron-based superconductors with band inversion and $s_{\pm}$-wave pairing can give rise to time-reversal invariant second-order topological superconductivity, manifested by the presence of helical Majorana hinge states in three dimensions, we are motivated to investigate the interplay between the second-order topology and the vortex lines in both weak- and strong-Zeeman-field regimes. In the weak-Zeeman-field regime, we find that vortex lines far away from the hinges are topologically nontrivial in the weakly doped regime, regardless of whether the second-order topology is present or not. However, when the superconductor falls into the second-order topological phase and a topological vortex line is moved close to the helical Majorana hinge states, we find that their hybridization will trivialize the vortex line and transfer robust Majorana zero modes to the hinges. Furthermore, when the Zeeman field is large enough, we find that the helical Majorana hinge states are changed into chiral Majorana hinge modes and thus a chiral second-order topological superconducting phase is realized. In this regime, the vortex lines are always topologically trivial, no matter how far away they are from the chiral Majorana hinge modes. By incorporating a realistic assumption of inhomogeneous superconductivity, our findings can explain the recent experimental observation of the peculiar coexistence and evolution of topologically nontrivial and trivial vortex lines in iron-based superconductors.
description: 8 pages, 4 figures, plus Supplemental Material
இலக்கியத்தில் கல்விச்சிந்தனை.pdf
Creators: name: Krishan, K.Nagendran
Publisher: name: figshare
Year: 2020
Subjects: subject: 200520 Indian Literature
subject: FOS: Languages and literature
subject: 200315 Indian Languages
subject: 200519 South-East Asian Literature (excl. Indonesian)
subject: 200314 South-East Asian Languages (excl. Indonesian)

description: தமிழ் இலக்கியங்களில் கல்வியும் பெருமையும் - செல்வமும் கல்வியும் - கல்வியின் முக்கியத்துவம் - கல்வியின் பயன்கள் - கல்லாரின் இழிநிலை குறித்து ஆராயப்படுகின்றது.
Can vacuum decay in our Universe?
Creators: name: Wang, Peng
name: Meng, Xin-He
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We take a phenomenological approach to study the cosmological evolution of decaying vacuum cosmology ($Λ(t)$CDM) based on a simple assumption about the form of the modified matter expansion rate. In this framework, almost all the current vacuum decaying models can be unified in a simple manner. We argue that the idea of letting vacuum decay to resolve the fine-tuning problem is inconsistent with cosmological observations. We also discuss some issues in confronting $Λ(t)$CDM with observation. Using the effective equation of state formalism, we indicate that $Λ(t)$CDM is a possible candidate for phantom cosmology. Moreover, confronted with a possible trouble of effective equation of state formalism, we construct the effect dark energy density. Finally, we discuss the evolution of linear perturbation.
description: 7 pages, 5 figures. v2: References added. v3: References added
Avaliação das pesquisas e inovações tecnológicas ocorridas na silvicultura e na produção industrial de celulose no Brasil
Creators: name: Montebello, Adriana Estela Sanjuan
name: Bacha, Carlos Jose Caetano
name: Montebello, Adriana Estela Sanjuan
name: Bacha, Carlos Jose Caetano
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: pulp
subject: research
subject: technological innovations
subject: silviculture.

description: This paper aims to analyze the evolution of research and technological innovations that have taken in forest and pulp industrial areas, and emphasizes their possible impacts on the competitiveness of the Brazilian pulp industry. First, primary and secondary data are used to evaluate the main types of research and technological innovations and, in sequence, it is evaluated the importance of technological innovations that have contributed to the expansion of the Brazilian pulp industry in the pulp world market. Technological innovations in forest and industrial areas in the Brazilian pulp industry have brought significant increases of forest and industrial productivities, leading to reduction of pulp production cost. Consequently, profitability of the industry has been enlarged, causing its expansion. Finally, the paper analyzes future challenges for the Brazilian pulp industry in relation to research and technological innovations able to maintain its competitiveness internationally.
On First Order Symmetry Operators for the Field Equations of Differential Forms
Creators: name: Michishita, Yoji
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider first order symmetry operators for the equations of motion of differential $p$-form fields in general $D$-dimensional background geometry of any signature for both massless and massive cases. For $p=1$ and $p=2$ we give the general forms of the symmetry operators. Then we find a class of symmetry operators for arbitrary $p$ and $D$, which is naturally suggested by the lower $p$ results.
description: 33 pages
Demo 3 - Fotis Foukalas et al
Creators: name: Foukalas, Fotis
Publisher: name: figshare
Year: 2020
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Title: Mobile DASH Services using the FLAME Future Media Platform
Authors: Fotis Foukalas, Athanasios Tziouvaras, Carolina Fernández, August Betzler
Trabalho, terra e geração de renda em três décadas de reflorestamentos no alto Jequitinhonha
Creators: name: Calixto, Juliana Sena
name: Ribeiro, Eduardo Magalhaes
name: Galizoni, Flavia Maria
name: Macedo, Renato Luis Grisi
name: Calixto, Juliana Sena
name: Ribeiro, Eduardo Magalhaes
name: Galizoni, Flavia Maria
name: Macedo, Renato Luis Grisi
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: family agriculture
subject: reforestation
subject: rural development
subject: rural employment
subject: Jequitinhonha

description: Beginning in the 1970’s the plateaus of Alto Jequitinhonha, northeast of Minas Gerais, until then areas of common use by family farmers, were planted with eucalyptus. This article analyzes the effects of reforestation on land occupation, comparing it with the areas of the family production. It is carried out in the homogenous micro-region of Capelinha, an area with the largest concentration of eucalyptus in the region. Secondary data from the IBGE Census for the years 1970, 1980, 1985 and 1996 were used, and also secondary data from surveys conducted around the region studied, including interviews with management of companies and union leadership. The article concludes that, in thirty years, the reforestation concentrated the land and created reduced employment. Family agriculture, on the other hand, had their areas of land compressed and overexploited due to the loss of the plateaus; however they remained as the main employment and income generator in the area.
Electrical read-out of the local nuclear polarization in the quantum Hall effect
Creators: name: Würtz, A.
name: Müller, T.
name: Lorke, A.
name: Reuter, D.
name: Wieck, A. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is demonstrated that the now well-established `flip-flop' mechanism of spin exchange between electrons and nuclei in the quantum Hall effect can be reversed. We use a sample geometry which utilizes separately contacted edge states to establish a local nuclear spin polarization --close to the maximum value achievable-- by driving a current between electron states of different spin orientation. When the externally applied current is switched off, the sample exhibits an output voltage of up to a few tenths of a meV, which decays with a time constant typical for the nuclear spin relaxation. The surprizing fact that a sample with a local nuclear spin polarization can act as a source of energy and that this energy is well above the nuclear Zeeman splitting is explained by a simple model which takes into account the effect of a local Overhauser shift on the edge state reconstruction.
description: Submitted to Phys. Rev. Lett
Austenite decomposition of low carbon high strength steels during continuous cooling
Creators: name: Petkov, Plamen
Publisher: name: University of British Columbia
Year: 2009

description: The process of transformation on the run-out table of a hot strip mill critically determines the final micro structure and thus, the hot rolled steel properties. The austenite decomposition kinetics of a high strength, low alloy steel (HSLA-65) microalloyed with niobium and a molybdenum bearing dual phase steel (DP 600) have been investigated and quantified with dilatometry during continuous cooling using a Gleeble 3500 thermomechanical simulator. The effects of different variables, such as austenite grain size and cooling rate, were quantified. It has been shown that increasing the cooling rate and the austenite grain size results in a decrease of transformation start temperatures. Evolution of the resulting microstructure has been investigated; polygonal ferrite fraction and ferrite grain size were determined. Accelerated cooling and smaller austenite grain size refine the final ferrite grain size. Further, austenite decomposition from pancaked austenite has been investigated. Deformation affects austenite decomposition by introducing additional nucleation sites and thus accelerating the nucleation rate. The retained strain showed a marked influence on the increase in transformation start temperature, as well as the increase in ferrite fraction and the ferrite grain refinement. Two models were applied to describe the process of austenite-to-polygonal ferrite transformation. The first model for the transformation kinetics is divided into two submodels. The transformation start temperature is described with a combined nucleation and early growth model. Subsequent growth can be described by the Avrami equation (or JMAK model) which is adapted to non-isothermal transformation by using the Scheil equation of additivity with an Avrami exponent n=0.9 and rate constant b which depends exponentially on temperature; the effect of austenite grain size on transformation kinetics can be captured with a suitable grain size exponent m. The second model is related to the ferrite grain size which can be expressed as a function of initial austenite grain size and transformation start temperature. An effective grain size, d[sub eff] = d[sub γ] exp(-ε), was used to incorporate the combined effect of austenite grain size and retained strain on the transformation start, transformation kinetics and ferrite grain size models.
Where to Map? Iterative Rover-Copter Path Planning for Mars Exploration
Creators: name: Sasaki, Takahiro
name: Otsu, Kyohei
name: Thakker, Rohan
name: Haesaert, Sofie
name: Agha-mohammadi, Ali-akbar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In addition to conventional ground rovers, the Mars 2020 mission will send a helicopter to Mars. The copter's high-resolution data helps the rover to identify small hazards such as steps and pointy rocks, as well as providing rich textual information useful to predict perception performance. In this paper, we consider a three-agent system composed of a Mars rover, copter, and orbiter. The objective is to provide good localization to the rover by selecting an optimal path that minimizes the localization uncertainty accumulation during the rover's traverse. To achieve this goal, we quantify the localizability as a goodness measure associated with the map, and conduct a joint-space search over rover's path and copter's perceptual actions given prior information from the orbiter. We jointly address where to map by the copter and where to drive by the rover using the proposed iterative copter-rover path planner. We conducted numerical simulations using the map of Mars 2020 landing site to demonstrate the effectiveness of the proposed planner.
description: 8 pages, 7 figures
அம்மாபட்டியான் தெய்வமும் பரசுராமரின் தொன்மமும்.pdf
Creators: name: Krishan, K.Nagendran
Publisher: name: figshare
Year: 2020
Subjects: subject: 200520 Indian Literature
subject: FOS: Languages and literature
subject: 200315 Indian Languages
subject: 200519 South-East Asian Literature (excl. Indonesian)
subject: 200314 South-East Asian Languages (excl. Indonesian)

description: அம்மாபட்டியான் என்ற நாட்டுப்புற தெய்வத்தின்மீது மேல்நிலையாக்கத்தின் மூலம் பரசுராமரின் தொன்மக்கதையைப் பொருத்தி பக்திநிலை ஆராயப்படுகின்றது. அம்மாபட்டி தெய்வத்தின் வரலாறு - பரசுராமரின் தொன்மக்கதை - மேல்நிலையாக்கம் - வழிபாடு - நேர்த்திக்கடன் - பேய்விரட்டுதல் சடங்கு - நம்பிக்கை குறித்து ஆராயப்படுகின்றது.
Demo 3 - Montagud et al.
Creators: name: Montagud, Mario
Publisher: name: figshare
Year: 2020
Subjects: subject: 80111 Virtual Reality and Related Simulation
subject: FOS: Computer and information sciences

description: Title: Open-Source Accessibility-Enabled VR360 Player
Authors: Mario Montagud, Isaac Fraile, Einar Meyerson, Sergi Fernández
Compact Object with a Local Dark Energy Shell
Creators: name: Veneroni, L. S. M.
name: Braz, A.
name: da Silva, M. F. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate some models of compact objects in the general relativity theory with cosmological constant $Λ$, based on two density profiles, one of them attributed to Stewart and the other one to Durgapal and Bannerji, proposed in the literature to model "neutron stars". For them, a nonlocal equation of state with cosmological constant is obtained as a consequence of the chosen metric. In another direction, we obtain a solution for configurations with null radial pressure. The first model (based on the Stewart's density profile) turned out to be the most interesting, since surprisingly it admits the presence of dark energy in the interior of the star, in the outermost layers, for a certain range of mass-radius ratio $γ$. This dark energy is independent of the cosmological constant, since it is a consequence of the tangential pressure of the fluid be sufficiently negative. Still in this case, for other values of $γ$, all the energy conditions are satisfied. Another advantage of this model, as well as that based on the density profile of Durgapal and Bannnerji is the existence of intervals of $γ$ compatible with physically acceptable models for $Λ< 0$, $Λ= 0$ and $Λ> 0$, which also allowed us to analyze the influence of $Λ$ on the behavior of the fluid with respect to the energy conditions. The other configuration studied here, $P_r=0$, only allow solutions for $Λ<0$, in order to ensure a positive mass for the object and to satisfy all the energy conditions in a specific range of $γ$.
description: 32 pages, 15 figures
Avaliação da competitividade da agricultura do Alentejo no âmbito do ecossistema Montado
Creators: name: Fragoso, Rui Manuel De Sousa
name: Lucas, Raquel
name: Fragoso, Rui Manuel De Sousa
name: Lucas, Raquel
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: “Montado”
subject: Alentejo
subject: Policy Analysis Matrix
subject: competitiveness
subject: Common Agricultural Policy.

description: This paper makes a socio-economic evaluation of the “Montado” ecosystem in Alentejo. It is study the viability of the agricultural systems and the effects of agricultural policy in their competitiveness and sustainability. It is used a Policy Analysis Matrix to evaluate the agricultural systems competitiveness and their economic efficiency. The agricultural systems are classified concerning their contribution for the economic growth, in function of income levels and policy effects.
MPEC 2024-T293 : 2024 TW16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TW16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
A experiência norte-americana com o seguro agrícola: lições ao Brasil?
Creators: name: Guimaraes, Marcelo Fernandes
name: Nogueira, Jorge Madeira
name: Guimaraes, Marcelo Fernandes
name: Nogueira, Jorge Madeira
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: rural risk management
subject: agricultural insurance
subject: North American agricultural policies.

description: Agricultural insurance is considered to be an effective to manage rural risks. Surprisingly, its adoption by farmers is very limited all over the world. An outstanding exception is the United States of America, country in which this instrument has achieved remarkable success. Nevertheless, the process of diffusion of agricultural insurance in the USA was slow and expensive. It has also required significant government intervention through a variety of complementary actions. In this context, countries willing to introduce this instrument among other agricultural policy tools, as it seems the case of Brazil, should proceed with caution. Agricultural insurance success has important pre-requisites and its general diffusion may amplify its problems. The analysis of the North American experience provides worthwhile lessons.
Investigating a speech and language therapy-informed approach to pronunciation teaching in the English language teaching classroom
Creators: name: O'Connell, Seán
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 470307
subject: English language

description: This research explores and develops the area of English pronunciation teaching in the context of English as a second language set in the English Language Teaching classroom. Surveys of teachers’ attitudes and practice suggest that teachers find pronunciation a difficult, if important, area of English Language teaching (Murphy 2011, Foote et al. 2012, Henderson et al. 2012). As a practitioner who has moved from Speech and Language Therapy (SLT) to English Language Teaching (ELT) (and ELT teacher training), the limited interaction there has been between the two disciplines in research or in practice has been of interest. This study applies an SLT model of the aetiology, assessment, and remediation of L1 phonological delay to the area of L2 pronunciation teaching. Drawing from an SLT-Metaphon-style approach to intervention the model is derived from the clinical psycholinguistic framework of addressing the interlanguage phonological system to affect change in the pronunciation output of seven Spanish learners of English in an ELT classroom setting. Findings point to systemic change beyond surface-level form-focussed learning even after a relatively short intervention programme of six teaching hours. Core findings indicate the importance of engaging learners cognitively and equipping them with the appropriate concepts and metalanguage necessary for pronunciation teaching and learning. The inherent tension between necessary accuracy and the new horizons of pluringualism including pluriphonology form an integral part of the conceptual framework which emerges from the study. Practical applications of the study to the ELT and SLT environments are explored in the context of the new multicultural and multilingual environments in Ireland and internationally
An intriguing branching of the maximum position of the absorption cross section in Mie theory explained
Creators: name: Rasskazov, Ilia L.
name: Carney, P. Scott
name: Moroz, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A potential control over the position of maxima of scattering and absorption cross-sections can be exploited to better tailor nanoparticles for specific light-matter interaction applications. Here we explain in detail the mechanism of an appreciable blue shift of the absorption cross-section peak relative to a metal spherical particle localized surface plasmon resonance (LSPR) and remaining scattering and extinction cross sections. Such a branching of cross sections maxima requires a certain threshold value of size parameter x~0.7 and is a prerequisite for obtaining high fluorescence enhancements, because the spectral region of high radiative rate enhancement becomes separated from the spectral region of high non-radiative rate enhancement. A consequence is that the maximum of the absorption cross section cannot be used as the definition of the LSPR position for x>0.7.
description: 4 pages, 4 figures
Structure Function Analysis of Long Term Quasar Variability
Creators: name: de Vries, W. H.
name: Becker, R. H.
name: White, R. L.
name: Loomis, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In our second paper on long-term quasar variability, we employ a much larger database of quasars than in de Vries, Becker & White. This expanded sample, containing 35165 quasars from the Sloan Digital Sky Survey Data Release 2, and 6413 additional quasars in the same area of the sky taken from the 2dF QSO Redshift Survey, allows us to significantly improve on our earlier conclusions. As before, all the historic quasar photometry has been calibrated onto the SDSS scale by using large numbers of calibration stars around each quasar position. We find the following: (1) the outbursts have an asymmetric light-curve profile, with a fast-rise, slow-decline shape; this argues against a scenario in which micro-lensing events along the line-of-sight to the quasars are dominating the long-term variations in quasars; (2) there is no turnover in the Structure Function of the quasars up to time-scales of ~40 years, and the increase in variability with increasing time-lags is monotonic and constant; and consequently, (3) there is not a single preferred characteristic outburst time-scale for the quasars, but most likely a continuum of outburst time-scales, (4) the magnitude of the quasar variability is a function of wavelength: variability increases toward the blue part of the spectrum, (5) high-luminosity quasars vary less than low-luminosity quasars, consistent with a scenario in which variations have limited absolute magnitude. Based on this, we conclude that quasar variability is intrinsic to the Active Galactic Nucleus, is caused by chromatic outbursts / flares with a limited luminosity range and varying time-scales, and which have an overall asymmetric light-curve shape. Currently the model that has the most promise of fitting the observations is based on accretion disk instabilities.
description: 23 pages, 18 figures. Accepted for publication in Astronomical Journal, Feb 2005 issue
Water-based synthesis and characterization of sol-gel hydroxyapatite ceramics
Creators: name: Liu, Dean-Mo
Publisher: name: University of British Columbia
Year: 2009

description: Sol-gel technology for hydroxyapatite (HAp) synthesis has been developed more than a decade ago. The existing sol-gel HAp synthetic methods which used alkoxide-based precursors require solvent-based diluting media, a moisture-controlled atmosphere, prolonged synthesis time generally greater than 24 hours, and a heat treatment at temperature > 500°C over a time period of several hours. Those factors limit practical applications of HAp, in particular as coatings. Therefore, in this work, HAp ceramics were synthesized using a novel water-based sol-gel route with triethyl phosphite and calcium nitrate as phosphorous and calcium precursors, respectively. The use of water as the only diluting medium and the alkoxide-metal salt combination as the precursors have never been reported in the literature. It was also expected that the novel sol-gel process developed in this work can be a feasible materials technology for biomedical applications, particularly coatings. Processing design in terms of time and temperature for both hydrolysis and ageing steps of the sol-gel synthesis was thoroughly investigated and successfully optimized for phase-pure HAp formation. This also allows further consolidation of a phase evolution map, which can instructively be used as a guidance for the synthesis of the sol-gel HAp at relatively low temperature. It is found that the novel sol-gel process currently developed for HAp provides advantages, included environmentally-friendly, cost-effective, and user-friendly over existing technologies. The process has been granted US patent number 6426114 B1, 2003 and US patent #2002155144 and is now under use in the biomedical industry.
Estudo da competitividade da produção de algodão entre Brasil e Estados Unidos – safra 2003/04
Creators: name: Ferreira Filho, Joaquim Bento De Souza
name: Alves, Lucilio Rogerio Aparecido
name: Villar, Patricio Mendez Del
name: Ferreira Filho, Joaquim Bento De Souza
name: Alves, Lucilio Rogerio Aparecido
name: Villar, Patricio Mendez Del
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Cotton
subject: production costs
subject: Brazil
subject: United States

description: This study aims to analyze the competitivity of the cotton production in Brazil and United States of America (USA) in terms of production costs, taking into consideration the 2003/04 crop season. In Brazil, data were colleted in “panel conferences” in the state of Mato Grosso (Campo Novo do Parecis and Pimavera do Leste) and also in the north of the Parana state. USA’s data came from secondary sources. The results showed that Brazil has a better competitivity, with good productivity, but high costs per hectare. The risk of the culture is high, given the short margins and the sunk costs. In USA, the average productivity is smaller than in Brazil; the costs are relatively high and the margins are negative in most regions. Results show that the sustainability of the cotton industry in USA is artificial, and dependent of government support.
A Precise Benchmark for Cluster Scaling Relations: Fundamental Plane, Mass Plane and IMF in the Coma Cluster from Dynamical Models
Creators: name: Shetty, Shravan
name: Cappellari, Michele
name: McDermid, Richard M.
name: Krajnovic, Davor
name: de Zeeuw, P. T.
name: Davies, Roger L.
name: Kobayashi, Chiaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study a sample of 148 early-type galaxies in the Coma cluster using SDSS photometry and spectra, and calibrate our results using detailed dynamical models for a subset of these galaxies, to create a precise benchmark for dynamical scaling relations in high-density environments. For these galaxies, we successfully measured global galaxy properties, modeled stellar populations, and created dynamical models, and support the results using detailed dynamical models of 16 galaxies, including the two most massive cluster galaxies, using data taken with the SAURON IFU. By design, the study provides minimal scatter in derived scaling relations due to the small uncertainty in the relative distances of galaxies compared to the cluster distance. Our results demonstrate low ($\leq$55% for 90$^{th}$ percentile) dark matter fractions in the inner 1$R_{\rm e}$ ~of galaxies. Owing to the study design, we produce the tightest, to our knowledge, IMF-$σ_e$ relation of galaxies, with a slope consistent with that seen in local galaxies. Leveraging our dynamical models, we transform the classical Fundamental Plane of the galaxies to the Mass Plane. We find that the coefficients of the mass plane are close to predictions from the virial theorem, and have significantly lower scatter compared to the Fundamental plane. We show that Coma galaxies occupy similar locations in the (M$_*$ - $R_{\rm e}$) and (M$_*$ - $σ_e$) relations as local field galaxies but are older. This, and the fact we find only three slow rotators in the cluster, is consistent with the scenario of hierarchical galaxy formation and expectations of the kinematic morphology-density relation.
description: 16 pages, 11 figures, Accepted for publication in MNRAS
Implications for unified schemes from submillimetre and far-infrared follow-up of radio-selected samples
Creators: name: Grimes, Jennifer A.
name: Rawlings, Steve
name: JWillott, Chris
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We extend our previous analysis which used generalized luminosity functions (GLFs) to predict the number of quasars and galaxies in low-radio-frequency-selected samples as a function of redshift, radio luminosity, narrow-emission-line luminosity and type of unified scheme. Our extended analysis incorporates the observed submillimetre (850 micron) flux densities of radio sources, employs a new method which allows us to deal with non detections, and focuses on the high-luminosity population. First, we conclude that the submillimetre luminosity L_{850} of low-frequency-selected radio sources is correlated with the bolometric luminosity L_{Bol} of their quasar nuclei via an approximate scaling relation L_{850} \propto L_{Bol}^{0.7 \pm 0.2}. Second, we conclude that there is quantitative evidence for a receding-torus-like physical process for the high-luminosity population within a two-population unified scheme for radio sources; this evidence comes from the fact that radio quasars are brighter in both narrow emission lines and submillimetre luminosity than radio galaxies matched in radio luminosity and redshift. Third, we note that the combination of a receding-torus-like scheme and the assumption that the observed submillimetre emission is dominated by quasar-heated dust yields a scaling relation L_{850} \propto L_{Bol}^{0.5} which is within the errors of that determined here for radio-selected quasars, and consistent with that inferred for radio-quiet quasars by Willott, Rawlings & Grimes (2003).
description: 13 pages (including an appendix), 5 figures, to appear in MNRAS
Análise dos determinantes do endividamento das empresas de capital aberto do agronegócio brasileiro
Creators: name: Bressan, Valéria Gama Fully
name: Lima, Joao Eustaquio De
name: Bressan, Aureliano Angel
name: Braga, Marcelo Jose
name: Bressan, Valéria Gama Fully
name: Lima, Joao Eustaquio De
name: Bressan, Aureliano Angel
name: Braga, Marcelo Jose
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: Debt
subject: capital structure
subject: agribusiness
subject: Pecking Order Theory.

description: Studies involving capital structure and the identification of its determinants are relevant issues in the field of corporate finance management research. In this regard, the present study intends to evaluate the determinants of corporate leverage in the Brazilian agribusiness sector using the model of Rajan and Zingales (1995). In the definition of the sample there were selected 26 companies that are classified in one of three subdivisions of the Brazilian agribusiness sector: a) the agriculture or cattle raising; b) inputs or production factors and c) processing and distribution sector, using as reference the CNA classification. The study used data from the Economatica® database, with the adoption of panel data methods. The results indicated that the variables tangibility of assets, growth opportunities, size and profitability were statiscally significant as determinant factors of the debt structure of Brazilian agribusiness companies. It is also possible to conclude that the model estimated by panel data generated results that are compatible with those suggested by the pecking order theory.