2,921 research outputs found

    Relationship Amongst Technology Use, Work Overload, and Psychological Detachment from Work

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    Permanent connection to the work world as a result of new technologies raises the possibility of workday extensions and excessive workloads. The present study addresses the relationship between technology and psychological detachment from work resulting from work overload. Participants were 313 professionals from the health sector who responded to three instruments used in similar studies. Through PLS-SEM, regression and dependence analyses were developed, and through the bootstrapping method, significance of factor loadings, path coefficients and variances were examined. Results of the study corroborate a negative effect of technology use on psychological detachment from work and a positive correlation between technology and work overload. Additionally, there is a significant indirect effect of technology on psychological detachment from work as a result of work overload. Findings extend the literature related to the stressor-detachment model, and support the idea that workers who are often connected to their jobs by technological tools are less likely to reach adequate psychological detachment levels. Implications for the academic community and practitioners are discusse

    ABUNDANCIA Y DIVERSIDAD DE AVES EN AMBIENTES CON DIFERENTE GRADO DE PERTURBACIÓN EN EL MONTE DE ARGENTINA

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    RESUMEN ∙ Las modificaciones antrópicas en el ecosistema suelen tener un impacto importante en su fauna. Estudios ecológicos consideran a las aves como buenas indicadoras de estos cambios. Sin embargo, en ambientes áridos y semiáridos de América del Sur estos estudios son limitados. En este trabajo analizamos los cambios en la riqueza y abundancia de aves en función de ambientes con diferente grado de perturbación antrópica, de las estaciones del año y de la velocidad del viento. El área de estudio está ubicada en la localidad Villa Aberastain, Pocito, San Juan, Argentina. Los muestreos se realizaron en transectas en tres ambientes contrastantes (Zona Rural, Llanura Pedemontana y Quebrada Precordillerana) y en tres momentos de las estaciones del año (otoño–invierno, primavera y verano). Detectamos 41 especies de aves, pertenecientes a 22 familias. La riqueza y la abundancia de aves fueron mayores en el ambiente más perturbado (Zona Rural). La abundancia de aves fue mayor durante la primavera, mientras que la riqueza no varió de manera significativa a lo largo del tiempo. El gremio de aves granívoras fue el más abundante y junto con las aves insectívoras de sustrato presentaron el mayor número de especies. Las aves nectarívoras mostraron una mayor abundancia y riqueza en ambientes de quebradas precordillerana, mientras que las insectívoras de sustrato lo fueron en ambientes con mayor perturbación (Zona Rural). En todos los casos, la abundancia de aves fue menor a mayor intensidad de viento. Al igual que en otros estudios, los ambientes con modificaciones antrópicas del desierto del Monte presentan comunidades de aves diferentes a los ambientes naturales circundantes, con mayor riqueza pero también con mayor abundancia de especies introducidas (Columba livia y Passer domesticus).ABSTRACT ∙ Abundance and diversity of birds in environments with different degrees of human disturbance in the Argentine Monte Anthropic ecosystem modifications usually have considerable impact on the resident fauna. Ecological studies have recognized birds as good indicators of these changes; nevertheless, little research has been conducted regarding the consequences of disturbance specifically on arid and semi‐arid environments of South America. This study analyzes how various parameters, including differing degrees of anthropic modification, seasonal variation, and wind velocity, affect richness and abundance of bird species as well as trophic guilds in the Monte ecoregion of San Juan, Argentina. We recorded 41 bird species during our surveys, belonging to 22 families. The most human‐modified environments had the highest levels of richness and abundance. Bird abundance was highest in spring, while richness did not vary significantly with season. The granivorous guild was the most abundant and, together with the ground‐foraging insectivores and granivorous‐insectivores, represented the majority of the species (58.5%). Aerial‐feeding insectivores and nectarivores were more common in mountain ravines while ground‐foraging insectivorous species were mainly found in human‐modified areas. In all cases, higher wind speed correlated with reduced bird abundance. Even though bird richness and abundance were highest in modified environments, these habitats harbored bird communities that differed substantially from surrounding natural environments, and with dominance of introduced species (Columbia livia, Passer domesticus)

    The Red seabream fishery in the Strait of Gibraltar: update of the available information from the fishery statistics and some considerations about the current knowledge on the target species growth

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    This paper presents the available information of the Red seabream (Pagellus bogaraveo) fishery in the Strait of Gibraltar and updates the documents presented in previous years with the information from the last analyzed year, 2012. The document presents data about landings, LPUE, length frequencies and also some biological information about the species growth which should be useful to fishery management considerations.Versión del edito

    Updating the available information from Spanish Red seabream fishery in the Strait of Gibraltar

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    This paper presents the available information of the Red seabream (Pagellus bogaraveo) Spanish fishery in the Strait of Gibraltar and updates the documents presented in previous years with the information from 2015. This document presents data about landings, CPUEs, spatial distribution and landings length frequencies which should be taken into account to provide the 2016 scientific advice for Red seabream in ICES Subarea I

    The Spanish Red seabream fishery of the Strait of Gibraltar: an update of the available information

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    This paper includes the available information of the Red seabream (Pagellus bogaraveo) Spanish fishery in the Strait of Gibraltar and updates the documents presented in previous years with the information from 2016. So, data about landings, CPUEs, spatial distribution and landings length frequencies are presented and analyze

    The Red seabream (Pagellus bogaraveo) fishery in the Strait of Gibraltar: ICES Subarea IX updated data

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    This paper presents the available information of the Red seabrem fishery in the Strait of Gibraltar and updates the documents presented in previous years with the information from the last analyzed year, 2010. The document presents data about landings, LPUE, length frequencies and also observers on board programme information which should be useful for considerations about the fishery.Versión del edito

    The Blackspot seabream Spanish target fishery of the Strait of Gibraltar: updating the available information

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    This paper includes the available information of the Blackspot seabream (Pagellus bogaraveo) Spanish target fishery in the Strait of Gibraltar updating the documents presented in previous years with the information from 2019. So, data about landings, fishing effort, CPUEs and landings length frequencies are presented to its discussion within the 2020 WGDEEP

    Updating the available information from Spanish Red seabream fishery in the Strait of Gibraltar

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    This paper presents the available information of the Red seabream (Pagellus bogaraveo) Spanish fishery in the Strait of Gibraltar and updates the documents presented in previous years with the information from 2014. This document presents Spanish data about landings, LPUEs, and landings length frequencies

    The Blackspot seabream Spanish target fishery of the Strait of Gibraltar: updating the available information

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    This paper includes the available information of the Blackspot seabream (Pagellus bogaraveo) Spanish “voracera” target fishery of the Strait of Gibraltar. The documents presented in previous years were updated with the 2020 information: data about landings, fishing effort, CPUEs and landings length frequencies are presented to its discussion within the 2021 WGDEEP

    Salinity induced anatomical and morphological changes in Chloris gayana Kunth roots

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    Chloris gayana Kunth is a grass species valuable as forage which was introduced into Argentina to be used as pasture in saline soils of subtropical and warm-temperate zones, given its good adaptability to drought, salinity and mild freezing. However, its tolerance varies according to the cultivar. In tetraploid cultivars, important reductions in yield have been observed. Here, a study of the variations produced on the root and stem system by salinity at different NaCl concentrations (0, 150 y 250 mM) was performed in the Boma cultivar, with the aim of determining the anatomical and morphological alterations produced by the salt excess. Plants cultivated with the highest level of salinity showed, in the whole, significant differences in the measured variables. A diminution in absolute values of the variables and a major reduction in vascular tissue dimensions were observed, which suggests that the lack of tolerance to salt stress could be related to a deficient adaptation to absorb and transport water and nutrients from the roots.Instituto de Fisiología y Recursos Genéticos VegetalesFil: Ceccoli, Gabriel. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ramos, Julio C. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ortega, Leandro Ismael. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales (ex IFFIVE); ArgentinaFil: Acosta, Juan M. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Perreta, Mariel Gladis. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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