52 research outputs found
DETERMINANTS OF ARGENTINEAN WINE PRICES IN THE U.S. MARKET
A hedonic price function for Argentinean wines in the U.S market is estimated in order to evaluate the effect of the most important attributes of wine on price. Results show that labeling practices and the choice of the right wine quality attributes are far more influential on price than expert panel opinions or oenological wine improvements such as aging.wine prices, Argentinean wine, hedonic price model, Demand and Price Analysis,
Factores que influyen en el precio del kiwi chileno en los mercados de exportaciĂÂłn: Un estudio de caso
Published by AsociaciĂÂłn de Economistas Agrarios de Chilehedonic prices, marginal price, percent impact., Agribusiness,
Factores que influyen en los precios del vino Chileno en el mercado de Estados Unidos: An\ue1lisis de precios hedonicos
An hedonic function relating the retail price of Chilean wine in the
USA market to the following variables was estimated: quality rating,
aging, variety, valley of origin and membership to an association.
Estimates for the percentage impact of each of these factors were
estimated for all vintages carried out from 1989 to 2002 and for all
the vintages. Marginal prices for each attribute were also estimated.
The overall conclusion was that variety and location (terroir) are more
influential in the commercial success of wines than quality, measured
by expert opinions,and aging. This is important because it indicates
that wrong long term decisions can not be modified via oenological
practices (aging). In general, red varieties and the Valleys north from
of the MaipoValley have a positive effect on prices,whereas valleys
located south of this valley and some white varieties have a negative
effect. Finally, the analysis by vintage from 1989 onwards, shows that
Chilean red wines have been gaining recognition of their quality in the
USA.Se estim\uf3 una funci\uf3n de precios hed\uf3nicos asociando el
precio al detalle del vino chileno en el mercado estadounidense a los
siguientes atributos visibles: nota de calidad, envejecimiento, cepa,
valle de origen y pertenencia a alguna asociaci\uf3n de productores.
Se estim\uf3 el impacto porcentual en el precio de cada uno de estos
atributos para las vendimias realizadas desde 1989 hasta 2002 y para
todas las vendimias. Tambi\ue9n se estimaron los precios marginales
de cada atributo. La conclusi\uf3n general de este estudio fue que la
cepa y el valle de origen (terroir) son considerablemente m\ue1s
influyentes en el \ue9xito comercial de un vino que la calidad,
medida por juicios expertos, y el envejecimiento. Ello es importante
porque indica que malas decisiones de largo plazo no pueden
despu\ue9s modificarse mediante tratamientos enol\uf3gicos
(envejecimiento). En t\ue9rminos generales, las cepas tintas y los
valles al norte del Valle del Maipo impactan positivamente sobre el
precio, en tanto que los valles al sur de dicho valle y algunas cepas
blancas impactan negativamente. Finalmente, al analizar las vendimias
realizadas desde 1989 en adelante, se observ\uf3 que el vino chileno
ha venido ganando reconocimiento de calidad en el mercado
estadounidense
Higher spin extension of cosmological spacetimes in 3D: asymptotically flat behaviour with chemical potentials and thermodynamics
A generalized set of asymptotic conditions for higher spin gravity without
cosmological constant in three spacetime dimensions is constructed. They
include the most general temporal components of the gauge fields that
manifestly preserve the original asymptotic higher spin extension of the
BMS algebra, with the same central charge. By virtue of a suitable
permissible gauge choice, it is shown that this set can be directly recovered
as a limit of the boundary conditions that have been recently constructed in
the case of negative cosmological constant, whose asymptotic symmetries are
spanned by two copies of the centrally-extended W algebra. Since the
generalized asymptotic conditions allow to incorporate chemical potentials
conjugated to the higher spin charges, a higher spin extension of locally flat
cosmological spacetimes becomes naturally included within the set. It is shown
that their thermodynamic properties can be successfully obtained exclusively in
terms of gauge fields and the topology of the Euclidean manifold, which is
shown to be the one of a solid torus, but with reversed orientation as compared
with one of the black holes. It is also worth highlighting that regularity of
the fields can be ensured through a procedure that does not require an explicit
matrix representation of the entire gauge group. In few words, we show that the
temporal components of generalized dreibeins can be consistently gauged away,
which partially fixes the chemical potentials, so that the remaining conditions
can just be obtained by requiring the holonomy of the generalized spin
connection along a thermal circle to be trivial. The extension of the
generalized asymptotically flat behaviour to the case of spins is also
discussed.Comment: 33 pages, one figure. Talk given at the "Meeting on the horizon",
Valparaiso, Chile, March 201
Minimal information for studies of extracellular vesicles (MISEV2023): From basic to advanced approaches
Extracellular vesicles (EVs), through their complex cargo, can reflect the state of their cell of origin and change the functions and phenotypes of other cells. These features indicate strong biomarker and therapeutic potential and have generated broad interest, as evidenced by the steady year-on-year increase in the numbers of scientific publications about EVs. Important advances have been made in EV metrology and in understanding and applying EV biology. However, hurdles remain to realising the potential of EVs in domains ranging from basic biology to clinical applications due to challenges in EV nomenclature, separation from non-vesicular extracellular particles, characterisation and functional studies. To address the challenges and opportunities in this rapidly evolving field, the International Society for Extracellular Vesicles (ISEV) updates its 'Minimal Information for Studies of Extracellular Vesicles', which was first published in 2014 and then in 2018 as MISEV2014 and MISEV2018, respectively. The goal of the current document, MISEV2023, is to provide researchers with an updated snapshot of available approaches and their advantages and limitations for production, separation and characterisation of EVs from multiple sources, including cell culture, body fluids and solid tissues. In addition to presenting the latest state of the art in basic principles of EV research, this document also covers advanced techniques and approaches that are currently expanding the boundaries of the field. MISEV2023 also includes new sections on EV release and uptake and a brief discussion of in vivo approaches to study EVs. Compiling feedback from ISEV expert task forces and more than 1000 researchers, this document conveys the current state of EV research to facilitate robust scientific discoveries and move the field forward even more rapidly
Atlas de las praderas marinas de España
Knowledge of the distribution and extent of seagrass habitats is currently the basis of management and conservation policies of the coastal zones in most European countries. This basic information is being requested through European directives for the establishment of monitoring programmes and the implementation of specific actions to preserve the marine environment. In addition, this information is crucial for the quantification of the ecological importance usually attributed to seagrass habitats due to, for instance, their involvement in biogeochemical cycles, marine biodiversity and quality of coastal waters or global carbon budgets. The seagrass atlas of Spain represents a huge collective effort performed by 84 authors across 30 Spanish institutions largely involved in the scientific research, management and conservation of seagrass habitats during the last three decades. They have contributed to the availability of the most precise and realistic seagrass maps for each region of the Spanish coast which have been integrated in a GIS to obtain the distribution and area of each seagrass species. Most of this information has independently originated at a regional level by regional governments, universities and public research organisations, which explain the elevated heterogeneity in criteria, scales, methods and objectives of the available information. On this basis, seagrass habitats in Spain occupy a total surface of 1,541,63 km2, 89% of which is concentrated in the Mediterranean regions; the rest is present in sheltered estuarine areas of the Atlantic peninsular regions and in the open coastal waters of the Canary Islands, which represents 50% of the Atlantic meadows. Of this surface, 71.5% corresponds to Posidonia oceanica, 19.5% to Cymodocea nodosa, 3.1% to Zostera noltii (=Nanozostera noltii), 0.3% to Zostera marina and 1.2% to Halophila decipiens. Species distribution maps are presented (including Ruppia spp.), together with maps of the main impacts and pressures that has affected or threatened their conservation status, as well as the management tools established for their protection and conservation. Despite this considerable effort, and the fact that Spain has mapped wide shelf areas, the information available is still incomplete and with weak precision in many regions, which will require an investment of major effort in the near future to complete the whole picture and respond to demands of EU directives
Actas de las V Jornadas ScienCity 2022. Fomento de la Cultura CientĂfica, TecnolĂłgica y de InnovaciĂłn en Ciudades Inteligentes
ScienCity es una actividad que viene siendo continuada desde 2018 con el objetivo de dar a conocer los conocimientos y tecnologĂas emergentes siendo investigados en las universidades, informar de experiencias, servicios e iniciativas puestas ya en marcha por instituciones y empresas, llegar hasta decisores polĂticos que podrĂan crear sinergias, incentivar la creaciĂłn de ideas y posibilidades de desarrollo conjuntas, implicar y provocar la participaciĂłn ciudadana, asĂ como gestar una red internacional multidisciplinar de investigadores que garantice la continuaciĂłn de futuras ediciones. En 2022 se recibieron un total de 48 trabajos repartidos en 25 ponencias y 24 pĂłsteres pertenecientes a 98 autores de 14 instituciones distintas de España, Portugal, Polonia y PaĂses Bajos.FundaciĂłn Española para la Ciencia y la TecnologĂa-Ministerio de Ciencia, InnovaciĂłn y Universidades; ConsejerĂa de la Presidencia, AdministraciĂłn PĂșblica e Interior de la Junta de AndalucĂa; Estrategia de PolĂtica de InvestigaciĂłn y Transferencia de la Universidad de Huelva; CĂĄtedra de InnovaciĂłn Social de Aguas de Huelva; CĂĄtedra de la Provincia; Grupo de investigaciĂłn TEP-192 de Control y RobĂłtica; Centro de InvestigaciĂłn en TecnologĂa, EnergĂa y Sostenibilidad (CITES
Atlas de las praderas marinas de España
Knowledge of the distribution and extent of seagrass habitats is currently the basis of management and conservation policies of the coastal zones in most European countries. This basic information is being requested through European directives for the establishment of monitoring programmes and the implementation of specific actions to preserve the marine environment. In addition, this information is crucial for the quantification of the ecological importance usually attributed to seagrass habitats due to, for instance, their involvement in biogeochemical cycles, marine biodiversity and quality of coastal waters or global carbon budgets. The seagrass atlas of Spain represents a huge collective effort performed by 84 authors across 30 Spanish institutions largely involved in the scientific research, management and conservation of seagrass habitats during the last three decades. They have contributed to the availability of the most precise and realistic seagrass maps for each region of the Spanish coast which have been integrated in a GIS to obtain the distribution and area of each seagrass species. Most of this information has independently originated at a regional level by regional governments, universities and public research organisations, which explain the elevated heterogeneity in criteria, scales, methods and objectives of the available information. On this basis, seagrass habitats in Spain occupy a total surface of 1,541,63 km2, 89% of which is concentrated in the Mediterranean regions; the rest is present in sheltered estuarine areas of the Atlantic peninsular regions and in the open coastal waters of the Canary Islands, which represents 50% of the Atlantic meadows. Of this surface, 71.5% corresponds to Posidonia oceanica, 19.5% to Cymodocea nodosa, 3.1% to Zostera noltii (=Nanozostera noltii), 0.3% to Zostera marina and 1.2% to Halophila decipiens. Species distribution maps are presented (including Ruppia spp.), together with maps of the main impacts and pressures that has affected or threatened their conservation status, as well as the management tools established for their protection and conservation. Despite this considerable effort, and the fact that Spain has mapped wide shelf areas, the information available is still incomplete and with weak precision in many regions, which will require an investment of major effort in the near future to complete the whole picture and respond to demands of EU directives.VersiĂłn del edito
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