Search results for "hive"
showing 10 items of 300 documents
Ecological Indicator Values of Europe (EIVE) 1.0: A Powerful Open-Access Tool for Vegetation Scientists
2016
International audience; Background: Ecological indicator values (EIVs) have a long tradition in vegetation ecological research in Europe. EIVs characterise the ecological optimum of species along major environmental gradients using ordinal scales. Calculating mean indicator values per plot is an effective way of bioindication. Following first systems in Russia and Central Europe, about two dozen EIV systems have been published for various parts of Europe.Aims: As there was no EIV system available at European scale that could be used for broad- scale analyses, e.g. in the context of the European Vegetation Archive (EVA), we develop such a system for the first time for the vascular plants of …
Los archivos de distrito en Portugal: memoria administrativa, histórica y social
2018
Se presenta un análisis de la evolución histórico-jurídi ca de los Archivos de Distrito (AD) portugueses, como instituciones que asumen la salvaguarda del patrimo nio público-administrativo del país. Para ello se revisa la bibliografía más relevante sobre el tema, así como la documentación histórica, legal y política, describien do su historia desde sus orígenes y los nuevos caminos que se van trazando, en relación con el aumento de la accesibilidad a la documentación que gestionan y a las nuevas estrategias de difusión de la información entre la ciudadanía. Todo ello en el marco de las distintas ini ciativas de modernización administrativa y las nuevas tecnologías disponibles.
Ecological insights from three decades of animal movement tracking across a changing Arctic
2020
Ecological “big data” Human activities are rapidly altering the natural world. Nowhere is this more evident, perhaps, than in the Arctic, yet this region remains one of the most remote and difficult to study. Researchers have increasingly relied on animal tracking data in these regions to understand individual species' responses, but if we want to understand larger-scale change, we need to integrate our understanding across species. Davidson et al. introduce an open-source data archive that currently hosts more than 15 million location data points across 96 species and use it to show distinct climate change responses across species. Such ecological “big data” can lead to a wider understandi…
Żagańska kolekcja listów i autografów w Rosyjskim Państwowym Archiwum Akt Dawnych w Moskwie
2021
The Russian State Archives of Historical Records in Moscow (Российский государственный архив древних актор) contains a group No. 1587, which the institutions resource list calls ‘Collection of Autographs Gathered by Princes Żagań.’ The article describes the history of the library of the dukes of Żagań in the 19th century, including the creation of a collection of manuscripts. This collection is of a particular importance as a testimony to the finał years of the Duchy of Courland and Semigalia and the extensive family ties of the princes of Żagań. The collection also includes autographs of important historical figures in Europę, sources concerning the Thirty Years War in Silesia, and relatio…
Sociología, Derecho y desigualdades sociales. Una propuesta de docencia universitaria crítica
2019
Fil: Di Nella, Dino. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Almeda, Elisabet. Universidad de Barcelona. Catalunya, España. Fil: Camps Calvet, Clara. Universidad de Barcelona. Catalunya, España. Fil: Giordana, Patricia. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Loggiacco, Camila. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: D'Alfonso, Luis. Universidad Nacional de Río Negro. Río Negro, Argentina. Critic education in human rights and social inequalities must be able to capture holistic and mutidmiensional sphere that Human Rights requires. This study introduces the basis in which critic university teaching proposal is carectarized by…
Proportions in Salvatore Caronia Roberti Between Theory and Practice
2022
AbstractIn 1949 Salvatore Caronia Roberti published the volume Introduzione allo studio della composizione architettonica. It is a compendium of his own studies and research came together in his architecture, testifying to the close interweaving of theory and practice. Caronia Roberti was a student of Ernesto Basile, one of the leading exponents of Art Nouveau, a style in which proportions played a marginal place. He later broke away from the Master’s school to attempt a new path in which geometry and proportion constitute the core of his theoretical research. This study aims to highlights the organic nature of Caronia Roberti’s thought, between architectural history and representation, by …
Sciences sociales : archives de la recherche
2006
International audience
Mixed-Valence Defect Ferrites : a New Family of Fine Powders and Thin Films of Spinel Ferrites
1997
When highly divided spinel ferrites become reactive enough with oxygen, to allow the oxidation of the Fe 2+ ions at low temperature and of substitute cations too, when these cations are capable of different valence states. We prepared fine particles of spinel ferrites substituted by Mn, Mo, Cu, by chimie douce, especially from oxalate precursors and used them to reveal and to study the oxido-reduction phenomena occurring in these finely divided materials. It was shown that the oxidation created a new family of spinel ferrites : the mixed-valence defect ferrites, having specific characteristics and properties. The ferrites of this type can be fine powders prepared at low temperature, or grou…
The Third Competition for Ernesto Basile’s Palace of Justice. Analysis, Conjectural Reconstruction and Photo Insertions
2022
The competition for the Palazzo di Giustizia in Rome takes place in four phases that develop between 1884 and 1887. The project of the third competition (1886-1887), drawn up by Ernesto Basile (Palermo 1857-1932), reveals a great maturity design that transforms the complex functional program into a rigorous neo-Renaissance style building. The jury recognizes the quality of the project and selects it for the final phase by invitation (1887) together with that one of Guglielmo Calderini, who will be the winner. The original drawings of the unrealized work are kept at the Basile Endowment of the Department of Architecture of the University of Palermo: among them there are sketches, preparatory…
Typical Aspects of the Microwave Noise Performance of HEMTs at Decreasing Temperatures
1996
In analog signal processing at microwave frequencies the noise performance of active devices is of fundamental importance for the accurate design of low-noise amplifiers. To this aim, the determination of the four noise parameters F O , Γ O (complex variable) and Rn has to be accomplished together with the usual scattering parameter measurements vs. frequency. In addition, the dependence of the device performance vs. temperature is of interest for circuit applications characterized by harsh environmental conditions. In this work the noise behavior of high electron mobility transistors has been investigated by means of measurements and modeling in the 2-18 GHz frequency range and as a functi…