cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cobertura del riesgo precios en los mercados de futuros para carne bovina en el marco de la experiencia uruguaya de 1993.
Creators: name: Lanfranco, Bruno A.
name: Lanfranco, Bruno A.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: Financial Economics
subject: Risk and Uncertainty
subject: financial markets
subject: live cattle
subject: livestock market

description: In the past decade, Uruguay had its first experience with the live cattle futures market that operated during the last months of 1993 and early 1994. The fact that the market didn’t survive more than few months does not mean that futures markets cannot succeed the next time. The possible reasons that inhibited its development were examined in this paper. It is possible that all the necessary conditions for the success could not be given at this moment. If the low volume traded in the futures market was derived from structural conditions that are inherent to small economies, impossible to modify, or if there was a failure in creating the minimal conditions that could attract enough hedgers and speculators capable of support the market is something that has at least to be considered. Although the lack of available data prevents the statistical confirmation of any hypothesis, the evidence collected suggests that the observed low volume and lack of liquidity was mainly derived from the virtual inexistence of speculators, rather than from potential structural problems in the livestock market.
description: En la pasada década, Uruguay tuvo su primera experiencia con el mercado de futuros de novillos para faena (MFN), el que funcionó durante los últimos meses de 1993 y hasta comienzos de 1994. El hecho que el MFN no sobreviviera más que unos pocos meses no implica necesariamente que los mercados de futuros para ganado en pie sean inviables en nuestro país. En este trabajo se examinaron algunas de las posibles razones que pueden explicar su fracaso. Es posible que al momento de su implementación no estuvieran dadas todas las condiciones necesarias para su desarrollo. Un punto a develar es si el bajo volumen operado en el MFN se debió a condiciones estructurales inherentes a las economías pequeñas y, por ende, imposibles de modificar o si, por el contrario, se debió a una falla en la creación de condiciones mínimas que incentivaran la participación de agentes cubridores y especuladores necesaria para sostener el mercado. Si bien la escasez de datos no permite demostrar fehacientemente ninguna hipótesis, la evidencia recogida sugiere que el bajo volumen y la falta de liquidez observada respondieron fundamentalmente a una virtual inexistencia de especuladores, más que a posibles problemas estructurales del mercado de haciendas.
Can There Be Size Economies in Providing Government Services?
Creators: name: Fox, William F.
name: Fox, William F.
Publisher: name: Unknown
Year: 1981
Subjects: Community/Rural/Urban Development
Public Economics

description: The view that per capita costs of providing a public service decline as the amount of the service produced increases is currently popular. However, a review of economic studies shows that the potential for size economies varies among the services provided and among communities of the same as well as of different sizes.
Exact Monte Carlo time dynamics in many-body lattice quantum systems
Creators: name: Ostilli, Massimo
name: Presilla, Carlo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: On the base of a Feynman-Kac--type formula involving Poisson stochastic processes, recently a Monte Carlo algorithm has been introduced, which describes exactly the real- or imaginary-time evolution of many-body lattice quantum systems. We extend this algorithm to the exact simulation of time-dependent correlation functions. The techniques generally employed in Monte Carlo simulations to control fluctuations, namely reconfigurations and importance sampling, are adapted to the present algorithm and their validity is rigorously proved. We complete the analysis by several examples for the hard-core boson Hubbard model and for the Heisenberg model.
Η διερεύνηση της επίδρασης της προσωπικότητας και των συμπεριφορών των επιχειρηματιών στην επιχειρηματική απόδοση των επιχειρήσεων
Creators: name: Κουρουτζής Νικόλαος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2025
Subjects: Ηγεσία
Επιχειρηματικότητα
Καινοτομία
Leadership
Entrepreneurship
Innovation

description: Σκοπός της παρούσας εργασίας, ήταν η διερεύνηση της επίδρασης της προσωπικότητας των επιχειρηματιών στην επιχειρηματική απόδοση των επιχειρήσεων, αλλά και η επίδραση αυτής στην γενικότερη λειτουργία της εκάστοτε επιχείρησης και το κατά πόσο μπορεί να επηρεαστεί θετικά η εύρυθμη λειτουργία της επιχείρησης ανάλογα με την προσωπικότητα του κάθε επιχειρηματία. Μέσω της βιβλιογραφικής ανασκόπησης και τη διεξαγωγή έρευνας με τη χρήση ερωτηματολογίου (κλίμακα Likert), επισημάνθηκε η επιρροή της προσωπικότητας του κάθε επιχειρηματία, και η αποτελεσματικότητά της στις σύγχρονες επιχειρήσεις. Τα δεδομένα της έρευνας συλλέχθηκαν από ένα δείγμα 15 επιχειρηματιών. Τα συμπεράσματα που αντλήθηκαν επιβεβαιώνουν τον καθοριστικό ρόλο που μπορεί να παίξει η νοοτροπία ενός επιχειρηματία για την εξέλιξη της επιχείρησής και την ανάπτυξη αυτής σε ένα ταχέως μεταβαλλόμενο περιβάλλον.
description: The purpose of this work is to investigate the effect of business personality on the financial performance of businesses, but also its effect on the general operation of each business and how much the smooth operation of the business can be positively affected depending on its personality. businessman. Through the literature review and conducting research using a questionnaire (Likert scale), the influence of each entrepreneur's personality, and its effectiveness in modern businesses, was highlighted. The survey data was collected from a sample of 15 entrepreneurs. The conclusions drawn confirm the decisive role that an entrepreneur's mindset can play for the evolution of the business and its development in a rapidly changing environment.
HORIZONTES
Creators: name: Jeremias Rocha, Renata
name: Toda, Favio
Publisher: name: Zenodo
Year: 2025

description: Resualdado da dissertação desenvolvida ao longo de 2023 e 2024. O produto tecnológico proposto é um programa de extensão, a ser realizado pelo núcleo incubador Redinova, no Campus Ji-Paraná, do IFRO. O nome do programa é HORIZONTES, em alusão a despertar novas perspectivas, novas oportunidades.O programa HORIZONTES consiste em capacitar os projetos de extensão do IFRO Campus Ji-Paraná para que se tornem potenciais candidatos à participação dos editais de incubação do núcleo Redinova. O programa é uma adaptação do modelo CERNE I, do Centro de Referência para Apoio a Novos Empreendimentos, elaborado pela ANPROTEC com objetivo de propor melhorias nos resultados das incubadoras, das mais diversas atuações.
2D Superconductivity: Classification of Universality Classes by Infinite Symmetry
Creators: name: Trugenberger, Carlo A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I consider superconducting condensates which become incompressible in the infinite gap limit. Classical 2D incompressible fluids possess the dynamical symmetry of area-preserving diffeomorphisms. I show that the corresponding infinite dynamical symmetry of 2D superconducting fluids is the coset ${{W_{1+\infty} \otimes \bar W_{1+\infty}} \over U(1)_{\rm diagonal}}$, with $W_{1+\infty}$ the chiral algebra of quantum area-preserving diffeomorphisms and I derive its minimal models. These define a discrete set of 2D superconductivity universality classes which fall into two main categories: conventional superconductors with their vortex excitations and unconventional superconductors. These are characterized by a broken $U(1)_{\rm vector} \otimes U(1)_{\rm axial}$ symmetry and are labeled by an integer level $m$. They possess neutral spinon excitations of fractional spin and statistics $S = {θ\over 2π} = {{m-1} \over 2m}$ which carry also an $SU(m)$ isospin quantum number; this hidden $SU(m)$ symmetry implies that these anyon excitations are non-Abelian. The simplest unconventional superconductor is realized for $m=2$: in this case the spinon excitations are semions (half-fermions). My results show that spin-charge separation in 2D superconductivity is a universal consequence of the infinite symmetry of the ground state. This infinite symmetry and its superselection rules realize a quantum protectorate in which the neutral spinons can survive even as soft modes on a rigid, spinless charge condensate.
description: Revised version to appear in Nuclear Physics B
Cambio climático en Uruguay, posibles impactos y medidas de adaptación en el sector agropecuario.
Creators: name: Gimenez, Agustin
name: Castano, Jose Pedro
name: Baethgen, Walter E.
name: Lanfranco, Bruno A.
name: Gimenez, Agustin
name: Castano, Jose Pedro
name: Baethgen, Walter E.
name: Lanfranco, Bruno A.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Risk and Uncertainty
subject: global warming
subject: agriculture and livestock production
subject: public policy
subject: extreme climate events.

description: This work presents a summary of information about climate change observed in Uruguay and the region and possible future scenarios. This information is based primarily on studies conducted and recently completed (2005-2009) in the country, in the framework of the program "Assessment of Impacts and Adaptation to Climate Change" (AIACC-START, TWAS, GEF) ( AIACC, 2006), in the "Statistical Analysis of the Climate and Development and Evaluation of Climate and Hydrological Scenarios of Major Watersheds of Uruguay and the Coastal Zone" (Climate Change Unit of DINAMA MVOTMA of Uruguay, UNDP, GEF, 2005), in the study "Identification of Potential Impacts of Climate Change in the Production of Natural Pastures and Rice in Uruguay" (UNDP, URU/ 05/G32-252, Climate Change Unit of DINAMA MVOTMA of Uruguay, GRAS Unit of the INIA, 2008) and in the project "Vulnerability The Climate Change on agricultural production systems in Latin America and the Caribbean: Developing Responses and Strategies" (World Bank, Cornell University, GRAS Unit of INIA, 2009).
description: El presente trabajo presenta un resumen de información sobre cambio climático observado en Uruguay y la región y posibles escenarios futuros. Dicha información se basa fundamentalmente en estudios conducidos y finalizados recientemente (2005-2009) en el país, en el marco del programa “Assessment of Impacts and Adaptation to Climate Change” (AIACC-START, TWAS, GEF) ( AIACC, 2006), en el “Análisis de la Estadística Climática y Desarrollo y Evaluación de Escenarios Climáticos e Hidrológicos de las principales Cuencas Hidrográficas del Uruguay y la Zona Costera” (Unidad de Cambio Climático de la DINAMA del MVOTMA de Uruguay, PNUD, GEF, 2005), en el estudio de “Identificación de Posibles Impactos del Cambio Climático en la Producción de Pasturas Naturales y de Arroz en Uruguay” (PNUD, URU/05/G32-252, Unidad de Cambio Climático de la DINAMA del MVOTMA de Uruguay, Unidad GRAS del INIA, 2008) y en el proyecto “Vulnerabilidad al Cambio Climático en los Sistemas de Producción Agrícola en América Latina y el Caribe: Desarrollo de Respuestas y Estrategias” (Banco Mundial, Universidad de Cornell, Unidad GRAS de INIA, 2009).
Intelectuales, libros y cultura Entrevista a Adriana Petra
Creators: name: MARGARIDO GALVÃO, José
Publisher: name: Zenodo
Year: 2021
Subjects: historia del libro y la edición; historia intelectual; archivos; bibliotecas; estudios latinoamericanos

description: Adriana Petra es historiadora, docente e investigadora. Se dedica a la historia intelectual, la historia de las izquierdas y de las culturas políticas. En sus trabajos aborda cuestiones como los intelectuales, las revistas, la historia del libro y la edición, las circulaciones transnacionales y la historia del comunismo. Su libro Intelectuales y cultura comunista. Itinerarios, problemas y debates en la Argentina de posguerra fue publicado en 2017 por Fondo de Cultura Económica y este año será traducido al inglés por Palgrave Macmillan. En 2018 participó en el III Coloquio Argentino de Estudios sobre el Libro y la Edición (CAELE) que se realizó en Buenos Aires. En la conferencia de cierre disertó sobre la cuestión del libro político y el lugar de la edición política y militante en ese campo de estudios. En aquella oportunidad charló por primera vez en su casa de Buenos Aires con el bibliotecario brasileño José Renato Galvão. Entre los asuntos tratados en la entrevista están el trabajo de Petra en los archivos, su trayectoria académica y sus investigaciones en el campo de la historia editorial e intelectual, y también su nuevo desafío como directora del Centro de Estudios Latinoamericanos de la Universidad Nacional de San Martín (UNSAM).
Massive Red Spiral Galaxies in SDSS-IV MaNGA Survey
Creators: name: Cui, Jiantong
name: Gu, Qiusheng
name: Shi, Yong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive red spiral galaxies (MRSGs) are supposed to be the possible progenitors of lenticular galaxies (S0s). We select a large sample of MRSGs ($M_*>10^{10.5}\rm M_{\odot}$) from MaNGA DR17 using the $g-r$ color vs. stellar mass diagram, along with control samples of blue spirals and S0s. Our main results are as follows: (1) After comparing the S$\rm \acute{e}$rsic index, concentration parameter, asymmetry parameter distribution, size-mass relation and $Σ_1$ (stellar mass surface density within the central 1 kpc)-mass relation, we find MRSGs are similar to S0s and have more compact and symmetric structures than blue spirals. MRSGs also resemble S0s in Dn4000, metallicity, Mgb/$\rm \left \langle Fe \right \rangle$ and $V/σ$ radial profile. (2) By using MaNGA 2D spectra data, we separate the spatial regions into inner (R < 0.8$R_{\rm e}$) and outer (0.8$R_{\rm e}$ < R < 1.5$R_{\rm e}$) regions, and detect residual star formation in the outer regions of MRSGs. (3) When we select a sub-sample of MRSGs with NUV$-r$ > 5, we find that they are completely star-formation quenched in both inner and outer regions. Compared to optically selected MRSGs, NUV$-r$ selected MRSGs appear to be more concentrated and have more massive dark matter halos. The similarities between S0s and MRSGs suggest the possible evolutionary trend between MRSGs and S0s.
description: accepted for publication in MNRAS; 17 pages, 16 figures, 1 table
Quantifying the resource of sharing a reference frame
Creators: name: van Enk, S. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We define a new quantity called refbit, which allows one to quantify the resource of sharing a reference frame in quantum communication protocols. By considering both asymptotic and nonasymptotic protocols we find relations between refbits and other communication resources. We also consider the same resources in encoded, reference-frame independent, form. This allows one to rephrase and unify previous work on phase references, reference frames, and superselection rules.
description: Updated title as PRA did not accept the word "refbit" in the title: PRA accepts neither neologisms (="a meaningless word coined by a psychotic", according to Webster), nor novophasms
3D ultrasound-based patient positioning for radiotherapy
Creators: name: Wang, Michael Haizhou
Publisher: name: University of British Columbia
Year: 2010

description: A novel 3D ultrasound-based patient positioning system for target localisation during radiotherapy is described. This system incorporates the use of optically tracked dedicated 3D ultrasound probes to acquire images of the target anatomy during both the radiotherapy simulation and treatment procedures. The ultrasound scan taken during simulation is registered to the planning CT so that the prescribed dose plan can be transferred to the simulation ultrasound coordinates. Finally, this ultrasound is registered to the treatment ultrasound image using a rigid-body intensity-based registration algorithm to localise the target at the time of treatment. This thesis first describes the method for registering CT and 3D ultrasound scans taken during the radiotherapy simulation procedure using infra-red LED (IRED) markers of the optical position sensing system directly as fiducial markers in CT. This approach was tested on a phantom and a RMS target registration error (TRE) of 1.09mm was achieved. In addition, an automatic intensity-based registration algorithm was shown to be capable of registering 3D ultrasound images acquired from the neck of a volunteer. Finally, a novel experimental technique is described which allows the entire radiotherapy treatment process using the proposed 3D ultrasound-based patient positioning system to be simulated. This method uses polymer gel dosimetry to record the dose delivered to a phantom, allowing this to be compared to the intended dose plan, thereby closing the loop on the entire treatment process. The mean target localisation accuracy of the proposed system was 2.5mm for 4 target locations inside the phantom, compared to 1.6mm obtained using the conventional patient positioning method of alignment lasers. These results suggest that 3D ultrasound-based target localisation is practically feasible and and potentially capable of increasing the accuracy of patient positioning for radiotherapy treatment in sites where day-to-day organ shifts are greater than 1mm in magnitude.
Social Innovation Toolkit: Transformation for Common Good
Creators: name: Caro-González, Antonia
Publisher: name: Zenodo
Year: 2023
Subjects: Social Innovation, cultural and creative industries, musseums, transformation, triple transition

description: Designed for changemakers, this practical guide provides actionable insights and strategies to navigate and implement social innovation for the common good. It explores social innovation as a vital tool for addressing today’s complex challenges. It highlights the need for new social-digital governance mechanisms to unify diverse visions, approaches and efforts in collaborative problem-solving. The guide stresses the crucial role of museums and cultural and creative industries in fostering human-centred innovation, leveraging creativity to drive positive transformation.
Food security and climate change adaptation in dryland agriculture
Creators: name: Fawzi, Nurul Ihsan
name: Qurani, Ika Zahara
Publisher: name: figshare
Year: 2021
Subjects: subject: 70101 Agricultural Land Management
subject: FOS: Other agricultural sciences
subject: 70102 Agricultural Land Planning

description: Drylands are home to over 40% of the human population in Africa and Asia, and to between 25–30% of the rest of the world’s population that equals to around two billion people (Reynolds et al. 2007). They rely directly on dryland ecosystem services for daily survival, whether through rain-fed or irrigated farming, or through widespread pastoralism. Globally, there are 6.1 billion hectares of drylands which generally consist of barren land (28%), grasslands (25%), forest (18%), croplands (14%), and other wooded land (10%). Not only important to human livelihood, they are also essential for the global ecosystem since a quarter of the world’s forests are located in drylands (FAO, 2019).
El riesgo de los cereales en Castilla y Leon. Un analisis provincial y comarcal
Creators: name: Serrano Bermejo, Arturo
name: Arias Martin, Pedro
name: Alarcón, Silverio
name: Villa Perez, Aurelio
name: Serrano Bermejo, Arturo
name: Arias Martin, Pedro
name: Alarcón, Silverio
name: Villa Perez, Aurelio
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research Methods/ Statistical Methods
subject: Risk and Uncertainty
subject: Riesgo
subject: riesgo sistematico y especifico
subject: estabilidad de las betas
subject: risk
subject: systematic and non-systematic risk
subject: beta stability

description: La estimacion y analisis del riesgo sique siendo una preocupacion para todos aquellos que se dedican a la toma de decisiones economicas. En este trabajo se cuantifica el riesgo total, asi como el sistematico y especifico, de los cereales en Castilla-Leon tanto a nivel provinvial como comarcal. Los resultados son analizados y testados para comprobar la validez del modelo y la explicacion de dichos resultados mediante el estudio de la establidad de las betas...Risk analysis is yet a main concern for economic decision makers. This work quantifies total risk, as well as systematic and non-systematic ones, of cereal crops in Castilla y Leon region at province and county levels. The results are analysed and tested to contrast the validity of the models and their implications by means of the stability of beta coefficients.
The expansion of stripped-envelope stars: consequences for supernovae and gravitational-wave progenitors
Creators: name: Laplace, E.
name: Götberg, Y.
name: de Mink, S. E.
name: Justham, S.
name: Farmer, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive binaries that merge as compact objects are the progenitors of gravitational-wave sources. Most of these binaries experience one or more phases of mass transfer, during which one of the stars loses part or all of its outer envelope and becomes a stripped-envelope star. The evolution of the size of these stripped stars is crucial in determining whether they experience further interactions and their final fate. We present new calculations of stripped-envelope stars based on binary evolution models computed with MESA. We use these to investigate their radius evolution as a function of mass and metallicity. We further discuss their pre-supernova observable characteristics and potential consequences of their evolution on the properties of supernovae from stripped stars. At high metallicity we find that practically all of the hydrogen-rich envelope is removed, in agreement with earlier findings. Only progenitors with initial masses below 10\Msun expand to large radii (up to 100\Rsun), while more massive progenitors stay compact. At low metallicity, a substantial amount of hydrogen remains and the progenitors can, in principle, expand to giant sizes (> 400\Rsun), for all masses we consider. This implies that they can fill their Roche lobe anew. We show that the prescriptions commonly used in population synthesis models underestimate the stellar radii by up to two orders of magnitude. We expect that this has consequences for the predictions for gravitational-wave sources from double neutron star mergers, in particular for their metallicity dependence.
description: Main text 17 pages, 7 figures, accepted for publication in Astronomy & Astrophysics
Testing General Relativity on the Scales of Cosmology
Creators: name: Peebles, P. J. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The cosmological tests are tight enough now to show that the Friedmann-Lemaitre Lambda CDM cosmological model almost certainly is a useful approximation. This means general relativity theory passes significant tests of the extrapolation of some fifteen orders of magnitude from the length scales of the precision tests of gravity physics.
description: 12 pages; contribution to GR17, Dublin, July, 2004
Spacetime in String Theory
Creators: name: Horowitz, Gary T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a brief overview of the nature of spacetime emerging from string theory. This is radically different from the familiar spacetime of Einstein's relativity. At a perturbative level, the spacetime metric appears as ``coupling constants" in a two dimensional quantum field theory. Nonperturbatively (with certain boundary conditions), spacetime is not fundamental but must be reconstructed from a holographic, dual theory.
description: 20 pages; references added
Comercio y marketing elextronico de los productos agroalimentarios de calidad certificada en Castilla y Leon
Creators: name: Kallas, Zein
name: Gomez-Limon Rodriguez, Jose A.
name: Martin Fernandez, Roberto San
name: Kallas, Zein
name: Gomez-Limon Rodriguez, Jose A.
name: Martin Fernandez, Roberto San
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Comercio electronico
subject: marketing electronico
subject: productos agroalimentarios de calidad
subject: Castilla y Leon
subject: electronic commerce
subject: electronic marketing
subject: agro-food quality products
subject: Castilla y Leon (Spain).

description: El Comercio Electronico de los productos agroalimentaros aun posee un volumen minimo comparado con otros sectores. No obstante, es previsible un importante desarrollo en un futuro proximo, especialmente en relacion a los productos de mayor calidad. Este trabajo pretende analizar la situacion actual del Comercio y Marketing Electronico de productors agroalimentarios de calidad certificada en Castilla y Leon, asi como estudiar las posibilidades de desarrollo en un futuro proximo. Para lograrlo se ha recurrido a una catalogacion de las empresas elaboradoras de estos productos. De ella se obtuvo un catalogo de 134 empresas, de las cuales 56 poseen paginas web. Estas ultimas, mediante una encuesta de observacion, han sido analizadas y clasificadas en 3 grupos, basandose en las variables de diseno, de actividad y de marketing. Asimismo, se ha realizado una encuesta por correo postal a todas las empresas de calidad registrades en el catalgo, analizando los problemas, moticaciones y limitaciones del Comercio y Marketing Elctronico, Estas encuestas han sido completados por entrevistas a expertos, realizando un analisis DAFP del Comercio y marketing Electronico de productos agroalimentarios de calidad...The Electronic Commerce of agro-food products still has a minimum volume compared with other sectors. However, an important development is foreseeable in a near future, especially for the higher quality products. This paper tries to analyze the current situation of Electronic Commerce and Marketing of certified quality agro-food products in Castilla y Leon (Spain) and its possibilities of development in a near future. In order to achieve this objective we have resorted to a catalogue of firms manufacturing these kinds of products. This catalogue includes 134 firms of which 56 have web pages. These last ones, by means of an observation survey, have been analyzed and classified in 3 groups based on the design, activity and marketing variables. A postal mail survey has also been implemented to all quality firms registered in the catalogue, analyzing the problems, motivations and limitations related with Electronic Commerce and Marketing. These surveys have been completed by interviews to experts, making a SWOT analysis of Electronic Commerce and Marketing of agro-food quality product.
Connections between Central Intensity Ratio and hot gas properties of early-type galaxies
Creators: name: Vinod, K T
name: Baheeja, C
name: Ravikumar, C D
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report strong connections between central intensity ratio (CIR) and hot gas properties of Early-type galaxies (ETGs) in the nearby ($\rm D<30 Mpc$) Universe. We find new strong correlations between (optical) CIR and X-ray gas luminosity ($\rm L_{\rm X,GAS}$) as well as X-ray gas temperature ($\rm T_{GAS}$). These correlations suggest that higher the central gas temperature lower will be the (central) star formation process in ETGs. Correlations of CIR separately with K-band magnitude and age of the sample galaxies, further support suppression of star formation in the central region of ETGs as they grow in mass and age. The systematic and tight variation of CIR with $\rm L_{\rm X,GAS}$ not only shows its remarkable potential to estimate $\rm L_{\rm X,GAS}$ from simple photometry but also helps in transforming the core-coreless dichotomy into a gradual one.
description: 7 pages, 4 figures, accepted for publication in MNRAS
Theory of decoherence in a matter wave Talbot-Lau interferometer
Creators: name: Hornberger, Klaus
name: Sipe, John E.
name: Arndt, Markus
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a theoretical framework to describe the effects of decoherence on matter waves in Talbot-Lau interferometry. Using a Wigner description of the stationary beam the loss of interference contrast can be calculated in closed form. The formulation includes both the decohering coupling to the environment and the coherent interaction with the grating walls. It facilitates the quantitative distinction of genuine quantum interference from the expectations of classical mechanics. We provide realistic microscopic descriptions of the experimentally relevant interactions in terms of the bulk properties of the particles and show that the treatment is equivalent to solving the corresponding master equation in paraxial approximation.
description: 20 pages, 4 figures (minor corrections; now in two-column format)
High-harmonic generation in spin-orbit coupled systems
Creators: name: Lysne, Markus
name: Murakami, Yuta
name: Schüler, Michael
name: Werner, Philipp
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study high-harmonic generation in two-dimensional electron systems with Rashba and Dresselhaus spin-orbit coupling and derive harmonic generation selection rules with the help of group theory. Based on the bandstructures of these minimal models and explicit simulations we reveal how the spin-orbit parameters control the cutoff energy in the high-harmonic spectrum. We also show that the magnetic field and polarization dependence of this spectrum provides information on the magnitude of the Rashba and Dresselhaus spin-orbit coupling parameters. The shape of the Fermi surface can be deduced at least qualitatively and if only one type of spin-orbit coupling is present, the coupling strength can be determined.
description: 11 pages, 11 figures
Additional file 1 of Investigation of atovaquone-induced spatial changes in tumour hypoxia assessed by hypoxia PET/CT in non-small cell lung cancer patients
Creators: name: Bourigault, Pauline
name: Skwarski, Michael
name: Macpherson, Ruth E.
name: Higgins, Geoff S.
name: McGowan, Daniel R.
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Additional file 1: Supplementary Figure 1. Change in tumour HV measured by hypoxia PET-CT. Supplementary Figure 2. Influence of treatment time on tumour hypoxic volume changes. Supplementary Figure 3. Relationship between baseline tumour hypoxic volume and total baseline tumour volume.
Additional file 1 of Association between the dispositional optimism and depression in young people: a systematic review and meta-analysis
Creators: name: Uribe, Fabio Alexis Rincón
name: de Oliveira, Silvia Botelho
name: Junior, Amauri Gouveia
name: da Silva Pedroso, Janari
Publisher: name: figshare
Year: 2021
Subjects: subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Estudio descriptivo de la demanda espanola de turism en casas rurales
Creators: name: Roig Merino, Bernat
name: Roig Merino, Bernat
Publisher: name: Unknown
Year: 2005
Subjects: subject: Consumer/Household Economics
subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: Turismo
subject: turismo rural
subject: casas rurales
subject: investigacion comercial
subject: paneles de consumidores
subject: tourism
subject: rural tourism
subject: rural houses
subject: marketing research
subject: consumer panels

description: Este estudio se plantea, como objetico generico, conocer y cuantificar la evolucion reciente de las principales caracteristicas de la demanda espanola de turismo en casas rurales. Para ello se ha efectuado una explotacion especifica de los datos de la estadistica sobre movimientos turisticos de los espanoles, que realiza el Miniesterio de Economia a traves del Institio de Estudios Turisticos. Los resultados obtenidos aportan informacion y datos nuevos sobre la evolucion reciente del turismo en casas rurales y sobre el nivel de satisfaccion de los espanoles en sus viajes a casas rurales...Inr ecent years Spanish public and private enterprises have begun to take a special interest in rural tourism. The public bodies responsible for both tourism and rural development consider this type of tourism as an opportunity to diversify the Spanish tourist market, as well as a boost to the economic development of many areas in the Spanish interior. Among the diverse types of tourist accomodation, rural houses have always been considered as specially related to the development of the interior aimed at by many rural development policies, as it helps to keep the population in the countryside and is an aid to recovering and preserving the cultural heritage. To achieve the maximum commercial benefit from this holiday accomodation, it is fundamental to know the market perfectly. The main objective of this study is therefore to examine and quantify recent developments in the principal elements of the Spanish demand for tourism in rural houses. This main objective can be further subdivided into two specific objectives: firstly, to describe the recent evolution in the volume of tourism in rural houses by Spanish holidaymakers (figured for journeys, travellers and nights spent in accomodation); and secondly, to describe the evolution of the main elements of rural holidays by Spanish tourists (destination, duration, motivation, degree of satisfaction, etc). The study was carried out by means of a specific examination of the statistics for tourist movements by the Spanish population, compiled by the Economics Ministry through the Instituto de Estudios Turisticos. The results obtained throw new light on the recent evolution of tourism in rural houses and on the degree of satisfaction of Spanish clients.
Impacto socioeconomico y ambiental de la nueva PAC. repercusiones sobre la agricultura de regadio en los Monegros (Aragon)
Creators: name: Elfkih, Saida
name: Sanchez Choliz, Julio
name: Elfkih, Saida
name: Sanchez Choliz, Julio
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: PAC
subject: desacoplamiento
subject: agricultura
subject: cultivos herbaceos
subject: decision multicriterio
subject: Monegros
subject: CAP
subject: single payment
subject: agriculture
subject: field crops
subject: multiple criteria decision making
subject: Monegros.

description: La politica Agraria Comun (PAC) desde su origen ha sufrido profundos cambios para hacer frente a nuevos desafios, pasando de una politica proteccionista de precios, que pretendia el aumento de la productividad, a una politica que tiene como objetivo el desarrollo sostenible y el respecto al medio ambiente. Este trabajo trata de analizar el impacto economico social y ambiental de la PAC sobre la agricultura de reagdio, specialmente sobre los cultivos herbaceos. En concreto, se analiza como influye la reciente reforma de la PAC, principalmente el desacoplamiento de las ayudas, en el sistemas productivo, la renta, el consumo de ague, el uso de nitrato y el nivel de empleo. Se han establecido seis escenarios futuros de la PAC con el objectivo de estudiar las repercusiones que estos tendrian sobre estos temas. Para alcanzar este objectivo se ha optado por la realizacion de simulacioens a traves de un modelo de programacion matematica, desarrollado dentro del paradigma de la Decision Multicriterio, concretamente el metodo NISE. la metodologia propuesta se ha puesto en practica en la comarca de los Monegros (Aragon). Los resultados obtenidos demuestran la importancia del desacoplamiento parcial de las ayudas en la agricultura de regadio en cuanto a satisfaccion de los objectivos economicos sociales y ambientales...The common Agricultural Policy (CAP), has deeply changed from a protectionist price policy, that tries to increase the productivity, to a policy that aims the sustainable development and the protection of the environment. The present study tries to analyze the economic, social and environmental impact of the CAP on the irrigated agriculture, specially on the field crops. In this way, it is analysed how the recent reform of the CAP, in particular the influence of the single payment on the productive system, the farm income, the water consumption, the use of nitrate and on the level of employment. It has been established six future scenarios of the CAP to study the repercussions on these issues. To reach this objective the study has opted to implement simulations through mathematical programming models, developed within the Multiple Criteria Decision making paradigm especially the NISE method. The proposed methodology has been practiced in the Monegros region (Aragon). The obtained results show the importance of the single payment partially decoupled in the irrigated agriculture in the satisfaction of social environmental and economic objectives.
Internal Structure of Ultra-High Energy Particles with Lorentz Symmetry Violation at the Planck Scale
Creators: name: Gonzalez-Mestres, Luis
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Assuming the existence of a local vacuum rest frame (LVRF), and using suitable algebraic tranformations, the internal structure of ultra-high energy particles (UHEPs) is studied in the presence of Lorentz symmetry violation (LSV) at the Planck scale. Violations of the standard Lorentz contraction and time dilation formulae are made explicit. Dynamics in the rest frame of a UHEP is worked out and discussed. Phenomenological implications for ultra-high energy cosmic rays (UHECR), including possible violations of the Greisen-Zatsepin-Kuzmin GZK) cutoff, are studied for several LSV models.
description: Contributed paper to the 28th International Cosmic Ray Conference, Tsukuba July - August 2003
Evolucion y tendencias en la actividad del Mercado Nacional de Ganados de Torrelavega entre 1975 y 2004
Creators: name: Calcedo Ordonez, Victoriano
name: Calcedo Ordonez, Victoriano
Publisher: name: Unknown
Year: 2005
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: mercados ganaderos
subject: vacuno lechero
subject: erestructuracion sector leche
subject: EEB
subject: cattle markets
subject: dairy
subject: milk restructuring BSE.

description: La caracterizacion ganadera de Cantabria, monopolizada por el vacuno lechero, tiene su reflejo comercial en la actividad del Mercado Nacional de Ganados de Torrelavega, basicamente dedicado a la venta de bovinos de los hatos lecheros, que comporta ventas annuales no inferiores a 70 millones de euros. El Mercado mantiene la tradicion comercial en vacuno, a pesar de los cambios estructurales. Han crecido haste cifras dificilmente superables los porcentajes de ventas sobre entradas. La demanda, por el contrario, parece concentrarse, lo que no es tan bueno. En sintesis, el Mercado deriva irremediable aunque pausadamente a la comercializacion de gando de recria para carne, con reduccion del de leche y equilibrio del de abasto. Si sigue asi, lo que estadisticamente es incoutestable, necesitatia ser muy competitivo. El censo de vacuno regional ha asegurado el movimiento comercial del Mercado, pero la aplicacion del regimen de cuotas plantea ciertas incognitas sobre la evolucion futura. El impacto de la EEB sobre el mercado en 2000 y 2001 ha afectado al numero de entradas y a las cotizaciones...The cattle characterization of Cantabria, monopolized by the dairy cattle, has its commercial reflection in the activity of Livestock Market of Torrelavega, basically dedicated to bovine sale of the dairy herds, which involves annual sales not inferior to 70 million euros, The Market maintains the commercial tradition in bovine, in spite of the structural changes. The percentages of sales on entrances have grown until figures hardly surmountable. The offer is dispersed, which is good as it shows a lot of confidence in the market. The demand, on the contrary, seems to concentrate which is not so good. The Market derives quickly although not hurriedly to do business with the calves, to reduce selling of the milk cows and to maintain the market of beef supply. If it continues this way, which statistically is clear, it will need to be very competitive. The regional census of bovine has assured the commercial movements of the Market, but the application of the quotas regime outlines certain unknown aspects of the future evolution. The impact of BSE in the Market has been noticed during both 2000 and 2001 in the number of entries as well as in cattle price.
Knotted trajectories of neutral and charged particles in Gaussian light beams
Creators: name: Radozycki, Tomasz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Making use of the equivalence between paraxial wave equation and two-dimensional Schrödinger equation, Gaussian beams of monochromatic light, possessing knotted nodal structures are obtained in an analytical way. These beams belong to the wide class of paraxial beams called the Hypergeometric-Gaussian beams [E. Karimi, G. Zito, B. Piccirillo, L. Marrucci and E. Santamato, Opt. Lett. {\bf 32}, 3053(2007)]. Four topologies are dealt with: the unknot, the Hopf link, the Borromean rings and the trefoil. It is shown in the numerical way that neutral polarizable particles placed in such light fields, upon precise tuning of the initial conditions, can be forced to follow the identical knotted trajectories. A similar outcome is also valid for charged particles that are subject to a ponderomotive potential. This effect can serve to precisely steer particles along chosen complicated pathways exhibiting non-trivial topological character, guide them around obstacles and seems to be helpful in engineering more complex nanoparticles.
description: REVTEX, 8 pages, 4 figures
Additional file 2 of Carbon monoxide increases utero-placental angiogenesis without impacting pregnancy specific adaptations in mice
Creators: name: Dickson, Megan A.
name: Peterson, Nichole
name: McRae, Karalyn E.
name: Pudwell, Jessica
name: Chandrakant Tayade
name: Smith, Graeme N.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Cancer

description: Additional file 2: Table S2. Pregnancy outcomes in carbon monoxide and control treated dams on GD10.5 and GD16.5. Number of implantation sites, live fetuses, and fetal resportions per litter in CO treated mice at GD10.5 (n = 5 control, n = 5 CO) and GD16.5 (n = 5 control, n = 4 CO). Data are presented as mean ± SEM, analyzed by the Mann-Whitney U test. A p value
title: Verhandlungen von sozialer Mobilität und Biografie in postmigrantischen Gesellschaften
Creators: name: Völker, Susanne
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Biografieforschung
subject: Migration
subject: Postmigrantische Gesellschaft
subject: Soziale Mobilität
subject: ddc:303

description: Ausgangspunkt der Sichtung von Theoretisierungen, Befunden und Erfahrungen zum Zusammenhang von sozialer Mobilität und biografischen Konstruktionen ist die These, dass sich mit der Prekarisierung und der Transnationalisierung von Lebensführungen in westeuropäischen Gesellschaften die Konzepte von sozialer Mobilität und Biografie substanziell verschieben. Im Beitrag werden aktuelle Forschungen zu transnationalen Biografien und Fluchtmigration aufgegriffen, um Impulse aus den raumzeitlichen Konstellationen der postmigrantischen Gesellschaft für den Zusammenhang von sozialer Mobilität und Biografie aufzunehmen. Schauplatz aktueller Verhandlungen um soziale Mobilität ist auch die Universität, an der heterogen situierte Studierende mit ihren Fragestellungen universitäre Methodenausbildung herausfordern und neu ausrichten.
Sublinear Scalarizations for Proper and Approximate Proper Efficient Points in Nonconvex Vector Optimization
Creators: name: García-Castaño, Fernando
name: Melguizo-Padial, Miguel Ángel
name: Parzanese, G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C26, 90C29, 90C30, 90C46, 49K27, 46N10

description: We show that under a separation property, a $\mathcal{Q}$-minimal point in a normed space is the minimum of a given sublinear function. This fact provides sufficient conditions, via scalarization, for nine types of proper efficient points; establishing a characterization in the particular case of Benson proper efficient points. We also obtain necessary and sufficient conditions in terms of scalarization for approximate Benson and Henig proper efficient points. The separation property we handle is a variation of another known property and our scalarization results do not require convexity or boundedness assumptions.
Computation of a homogeneous coordinate time series for European GPS stations by reprocessing of the weekly EPN solutions
Creators: name: Panafidina, Natalia
name: Malkin, Zinovy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Weekly coordinate time series for the all EPN (European Permanent GPS Network) stations for the period of observations beginning from GPS week 834 was obtained by a reprocessing of the official EPN solutions. Comparison of this series with EPN Central Bureau (EPN CB) and the previous IAA two-year solution for selected EPN stations obtained by reprocessing of the original observations is performed. Results of comparison show that new solution based on fiducial-free strategy is most likely free of seasonal errors. Now the new IAA EPN solution is being computed regularly (on availability of the official EPN solution) and is available to any interested group.
description: 7 pages, 6 figures; presented at EUREF Symposium, Toledo, Spain, 4-7 Jun 2003