Search results for "Pact"
showing 10 items of 2355 documents
How does climate change affect a fishable resource? The case of the royal sea cucumber (Parastichopus regalis) in the central Mediterranean Sea
2022
Holothurians or sea cucumbers are key organisms in marine ecosystems that, by ingesting large quantities of sediments, provide important ecosystem services. Among them, Parastichopus regalis (Cuvier, 1817) is one of the living sea cucumbers in the Mediterranean actively fished for human consumption mainly in Spain, where it is considered a gastronomic delicacy. In the Strait of Sicily (central Mediterranean Sea), this species is not exploited for commercial use even if it is used as bait by longline fishery. P. regalis is frequently caught by bottom trawling and discarded at sea by fishers after catch, and because of its capacity to resist air exposition (at least in cold months), it is rea…
Industry Reallocations in a Globalizing Economy
2007
We distill the main insights from recent trade models on firms' responses to globalization. Our primary aim is to assess the economic impact and the welfare implications of the resulting reallocation of resources across firms and countries. In so doing, we bring theory into life through the numerical implementation of a theoretical framework calibrated on European data, which encompasses aspects of economic geography, firm heterogeneity, and firms' organizational choices. Our final purpose is to provide a comprehensive background for empirical investigations and to stimulate further theoretical research.
Identificación y priorización de actuaciones de mejora de la eficiencia en el Sistema Nacional de Salud
2011
ResumenObjetivosIdentificar un número significativo de actuaciones orientadas a mejorar la eficiencia y reducir el despilfarro en el Sistema Nacional de Salud (SNS), y priorizarlas en función de su impacto. Valorar el impacto y la prioridad de las medidas implantadas o anunciadas por el gobierno.Material y métodosReunión de 13 expertos, estructurada siguiendo procedimientos adaptados de las técnicas de brainstorming, grupo nominal y método de consenso Rand.ResultadosEl panel propuso 101 posibles medidas para mejorar la eficiencia del SNS, que junto a las 11 contenidas en los Reales Decretos-Ley 4 y 8 de 2010, suman un total de 112 propuestas valoradas. Las propuestas se centraron en el buen…
RISK ASSESSMENT IN ROMANIA: FROM LEGISLATION TO NEEDS AND POSSIBILITIES
2006
Ecological risk assessment (ERA) is an integral part of the environmental policy assumed by the Romanian Government, according to the standards of the European Union, to which our country hopes to be admitted in 2007. Even though very difficult, the negotiations chapter on environment protection was closed not long ago, the norms the Government has passed, inspired by the Community ones, being quite convincing. The paper presents the general ERA national policy framework, as well as some cases of where human health and ERA have been or should be applied: Baia Mare cyanide spill; Copsa Mica area, where the old pollution with Pb and Cd encompasses more than 40 km 2 , with high risks for popul…
Quasihyperbolic boundary condition: Compactness of the inner boundary
2011
We prove that if a metric space satisfies a suitable growth condition in the quasihyperbolic metric and the Gehring–Hayman theorem in the original metric, then the inner boundary of the space is homeomorphic to the Gromov boundary. Thus, the inner boundary is compact. peerReviewed
Metric Lie groups admitting dilations
2019
We consider left-invariant distances $d$ on a Lie group $G$ with the property that there exists a multiplicative one-parameter group of Lie automorphisms $(0, \infty)\rightarrow\mathtt{Aut}(G)$, $\lambda\mapsto\delta_\lambda$, so that $ d(\delta_\lambda x,\delta_\lambda y) = \lambda d(x,y)$, for all $x,y\in G$ and all $\lambda>0$. First, we show that all such distances are admissible, that is, they induce the manifold topology. Second, we characterize multiplicative one-parameter groups of Lie automorphisms that are dilations for some left-invariant distance in terms of algebraic properties of their infinitesimal generator. Third, we show that an admissible left-invariant distance on a Lie …
Consideraciones clínicas sobre la resorción radicular externa por impactación dentaria
2003
-Leopoldo.Forner@uv.es La resorción externa por presión (RREP) consiste en una pérdida de tejido dentinario y cementario de las raíces dentarias que se origina a nivel del ligamento periodontal, ocasionada por presiones prolongadas y mantenidas sobre la raíz. Presentamos tres casos con diferente repercusión y tratamiento. Según el distinto grado de afectación se describe y clasifica el tratamiento de RREP a causa de dientes impactados. En cuanto a la restauración de RREP se perfila la cavidad clase V de diseño 5 y el empleo de cermet o amalgamas de plata para su relleno. Pressure external root resorption (PERR) is a loss of dental root tissues (dentine and cementum) that begin in the period…
Agroecological engineering
2015
Earth has recently entered the new era of the Anthropocene, during which the rise of human activities are impacting for the first time ecosystems and climate on the global scale. Since the 1960s the green revolution has improved food production in quantity using industrially-designed agriculture, which has led to global pollution by pesticides and losses of food quality, biodiversity and soil carbon. As a consequence there is a need to implement agroecological practices in order to produce food safely and in a sustainable way. This virtual issue presents principles and applications of agroecological engineering, exemplified in 19 selected review articles from the journal Agronomy for Sustai…
Statements from the Taormina expert meeting on occult hepatitis B virus infection
2008
Giovanni Raimondo*, Jean-Pierre Allain, Maurizia R. Brunetto, Marie-Annick Buendia, Ding-Shinn Chen, Massimo Colombo, Antonio Craxi, Francesco Donato, Carlo Ferrari, Giovanni B. Gaeta, Wolfram H. Gerlich, Massimo Levrero, Stephen Locarnini, Thomas Michalak, Mario U. Mondelli, Jean-Michel Pawlotsky, Teresa Pollicino, Daniele Prati, Massimo Puoti, Didier Samuel, Daniel Shouval, Antonina Smedile, Giovanni Squadrito, Christian Trepo, Erica Villa, Hans Will, Alessandro R. Zanetti, Fabien Zoulim
The probability that $x$ and $y$ commute in a compact group
2010
We show that a compact group $G$ has finite conjugacy classes, i.e., is an FC-group if and only if its center $Z(G)$ is open if and only if its commutator subgroup $G'$ is finite. Let $d(G)$ denote the Haar measure of the set of all pairs $(x,y)$ in $G \times G$ for which $[x,y] = 1$; this, formally, is the probability that two randomly picked elements commute. We prove that $d(G)$ is always rational and that it is positive if and only if $G$ is an extension of an FC-group by a finite group. This entails that $G$ is abelian by finite. The proofs involve measure theory, transformation groups, Lie theory of arbitrary compact groups, and representation theory of compact groups. Examples and re…