Análisis cualitativo y perspectiva crítica del Estudio de la Excelencia de James Grunig en el desarrollo profesional de las relaciones públicas en España

El estudio que aquí presentamos amplia la investigación cuantitativa realizada sobre los principios básicos de la Teoría de la Excelencia de James Grunig (Grunig et al., 1992)19 llevados a cabo en el sector de las Relaciones Públicas en España. El presente artículo quiere contrastar estos resultados previos con los contenidos cualitativos extraídos en las entrevistas en profundidad con varios representantes del mundo profesional. Los resultados verifican los principios ya demostrados a través de la investigación empírica y algunos de los principios e indicadores preestablecidos en el estudio en 1992. Sin embargo, percibimos unos nuevos valores que podrían establecer y replantear un nuevo marco de excelencia. Estos principio podrían ser: la legitimidad, la representatividad, la experiencia social y el consenso (Ordeix & Duarte, 2009). A pesar de que las organizaciones españolas analizadas no son tan excelentes comunicativamente, sí se observa que la teoría de la excelencia y los modelos de relaciones públicas de James Grunig son ampliamente aceptados tanto por los profesionales de las relaciones públicas como por los máximos directivos. Con lo cual, se podría pensar que en el futuro, la práctica de las relaciones públicas avanzará en el modelo de excelencia de Grunig como pauta a seguir

Quantitat abans que qualitat. L’impacte econòmic de la immigració a Catalunya

Catalunya registra xifres d'immigració elevades, fent augmentar la producció però sense evitar que la productivitat disminueixi. La immigració té efectes lleugerament positius en els salaris i el benestar, encara que els reptes plantejats en ensenyament i en pressió demogràfica poden hipotecar el futur del país

Probabilistic Surface Characterization for Safe Landing Hazard Detection and Avoidance (HDA)

Apparatuses, systems, computer programs and methods for performing hazard detection and avoidance for landing vehicles are provided. Hazard assessment takes into consideration the geometry of the lander. Safety probabilities are computed for a plurality of pixels in a digital elevation map. The safety probabilities are combined for pixels associated with one or more aim points and orientations. A worst case probability value is assigned to each of the one or more aim points and orientations

Platinum-group elements in the cores of potassium feldspar spherules from the Cretaceous-Tertiary boundary at Caravaca (Spain)

The abundant spherules present in the Cretaceous-Tertiary boundary layer at Caravaca are diagenetically transformed to potassium feldspar. Before our study no possible relicts of the precursor material had been reported. but in this paper we describe the presence of cores in these spherules that could represent a relict of the «unknown precursor». These cores are made up of C mixed with Si. Mg. AL Cr. Ca among other elements. Laser Ablation System analysis also reveals an enrichment in pe;E could suggest an extraterrestrial origin for this material. PI. Pd and Ir do not show a chondritic ratio: however. asevere modification of their concentration could be expected during the early diagenetic processes.Las esférulas existentes en la lámina de sedimento del tránsito Cretácico-Terciario de la sección de Caravaca han sido transformadas diagenéticamente a feldespato potásico. En este trabajo se describe la existencia de núcleos encontrados en el interior de las esférulas. los cuales' pueden representar relictos del material precursor. Dichos núcleos están constituidos por C. Si. Mg, AL Cr y Ca entre otros elementos. Se pone de relieve, por vez primera, su notable enriquecimiento en elementos del grupo del platino, cuyas relaciones no condríticas pueden ser debidas a la existencia de importantes modificaciones en su concentración inicial causadas por los procesos diagenéticos y por la existencia de materia orgánica

Design issues for the VLSI implementation of universal approximator fuzzy systems

Comunicación presentada al "CSCC'99" celebrado en Atenas en Julio de 1999.Several VLSI realizations of fuzzy systems have been proposed in the literature in the recent years. They employ analog or digital circuitry, offering more or less programmability, implementing different inference methods, with different types of membership functions as well as different antecedents’ connectives. This paper centers this wide design space by fixing several parameters that allow efficient VLSI implementations of programmable fuzzy systems featuring first, second and third order accurate approximation. Hardware requirements are discussed and compared from the point of view of approximation capability or precision, thus attempting to a formalization that has never been applied before to the field of fuzzy hardware.This work has been partially supported by the Spanish CICYT Project TIC98-0869.Peer reviewe

Carbon cycling in a Patagonian fjord: Strength of biological vs. physical pump

Póster presentado en la 2nd International Ocean Research Conference, celebrada en Barcelona del 17 al 21 de noviembre de 2014.Understanding the role of the pelagic “biological and physical pump” in carbon cycling is critical to climate change adaptation and mitigation efforts especially in coastal areas characterized by intense biogeochemical cycling. Fjords are among the few coastal regions that appear to be net annual sinks for atmosphericCO2. Vertical profiles of temperature and salinity were collected with a CTD revealing intense vertical structure in the water column that could be summarised as 2 layers with a transition-mixing region .Spatio-temporal sampling of physical and biogeochemical (C system, nutrients, Phyto- and Zooplankton, in situ dissolved pCO2) parameters was conducted in Comau Fjord (Puerto Montt-Chile) during Austral spring from the surface and deep layers. Spatial variation in water column structure in the fjord was minimal, however the depth of the upper layer varies probably depending on the surface-water inputs. Surface waters had significantly lower pCO2 values compared to the atmosphere and deeper water. Concentrations of suspended material and chlorophyll a were higher deeper in the water column, suggesting concentration process of material across the halocline. Overall, concentrations of particulate matter and mesozooplankton (during the study period), were low compared to many mid-latitude regions, and near absent in the vicinity of the 2 rivers entering the fjord. The low surface water pCO2 values suggest negative air-water CO2fluxes predominates within Comau Fjord during Austral spring. This preliminary study suggests that the geochemical properties of watershed and the low [DIC] of surface-water inputs, i.e., the physical pump, seems to play an important role in this region.This work was supported by the project 2013CL0013 funded by the CSIC, Fundacion Endesa and Fundación San Ignacio del Huinay. Funding was also provided by the Spanish Ministry of Sciences and Innovation (JAE DOCTORES 2010 contract for E.P.M., JAE PREDOCTORAL scholarship for S.T. and S.F.) and part-funded bythe European Union (European Social Fund, ESF2007-2013) and the Spanish Ministry for Economy and Competitiveness.Peer Reviewe

Off-odor compounds responsible for quality loss of minimally processed baby spinach stored under MA of low O2 and high CO2 using GC–MS and olfactometry techniques

Strong off-odor development is still one of the major problems associated with quality loss of baby spinach stored in MA with low O2 and high CO2. Freshness has been generally evaluated by sensory techniques that allow the description of aromatic profiles but it does not identify the responsible compound(s). An approach including sensory analysis and Gas Chromatography-Mass Spectrometry (GC–MS)/Gas Chromatography-Olfactometric (GC-O) techniques were applied to elucidate the complex combination of volatile organic compounds (VOCs) responsible for the off-odor perception of intact baby spinach without generation of new volatiles due to tissue manipulation. After 14 days, levels of low O2 and high CO2 (0.3 and 9.3 kPa, respectively) were achieved and off-odors development was detected. After GC–MS/GC-O analysis, there were 39 main compounds with olfactory activity, identified as alcohols associated with lipid peroxidation or LOX pathway; sulfur compounds from amino acid degradation; and alkanes from lipid autoxidation processes or carotenoid degradation. Odor-active compounds were grouped into the six odor categories as described by the sensory panel, with rotten and fishy being the strongest odors perceived after storage. The isolated VOCs grouped in the rotten descriptor were the alcohols 1-pentanol, (Z)-3-hexen-1-ol and 1-octen-3-ol, and the sulfur compounds methanethiol and dimethyl disulfide. A compound responsible for fishy notes was dimethyl sulfide but some evidence indicated that amine compounds with low odor thresholds could be also implicated. Since sulfur compounds were perceived by all sniffers and easily detected by mass spectrometry, they may be good candidates as biomarkers of off-odors in baby spinach

Moitrelia multifidella (Chrétien, 1911), un nuevo pirálido para Europa continental (Lepidoptera : Pyralidae : Phycitinae)

S'esmenta per primera vegada la presència de Moitrelia multifidella (Chrétien, 1911) (Lepidoptera: Pyralidae: Phycitinae) a l'Europa continental. S'iŀlustra l'espècie, així com els aparells genitals masculins i femenins.It is reported, for the first time, the presence of Moitrelia multifidella (Chrétien, 1911) (Lepidoptera: Pyralidae: Phycitinae) in Continental Europe. The morphology of the imago and the male and female genitalic structures are illustrated.Se menciona por primera vez la presencia de Moitrelia multifidella (Chrétien, 1911) (Lepidoptera: Pyralidae: Phycitinae) para la Europa continental. Se ilustra la especie, así como los aparatos genitales del macho y de la hembra