Search results for "value"
showing 10 items of 5321 documents
Hydroquinone derivatives from the marine-derived fungus Gliomastix sp.
2017
Eight new hydroquinone derivatives, gliomastins A–D (1–4), 9-O-methylgliomastin C (5), acremonin A 1-O-β-D-glucopyranoside (6), gliomastin E 1-O-β-D-glucopyranoside (7), and 6′-O-acetyl-isohomoarbutin (8), together with seven known analogues were isolated from the marine-derived fungus Gliomastix sp. Their structures were elucidated by extensive spectroscopic analysis including 1D and 2D NMR measurements aided by DFT NMR calculations as well as MS data. TDDFT-ECD and OR calculations were performed to determine the absolute configurations of 1 and the aglycones of 6 and 7. Compound 1 features a novel skeleton, biogenetically derived from a Diels–Alder reaction between derivatives of 11 and 1…
The nutritional composition of selected wild edible mushrooms from Sicily (southern Italy)
2011
The wide consumption of wild fungi by the local population is the basis for an evaluation of the as yet unknown nutritional composition of some selected species. Wild edible mushrooms (Fistulina hepatica, Infundibulicybe geotropa, Laetiporus sulphureus, Macrolepiota procera var. procera and Suillus granulatus) were collected in a number of Sicilian (southern Italian) forest ecosystems and analysed according to standard methodologies of fungal analysis, for their basic composition (ash, water, protein, fat, carbohydrate and vitamin). The results showed that the investigated mushrooms could be suggested as a source of nutritional elements for the human diet.
Fine-grain beta diversity in Palaearctic open vegetation: variability within and between biomes and vegetation types
2021
Aims: To quantify how fine-grain (within-plot) beta diversity differs among biomes and vegetation types. Study area: Palaearctic biogeographic realm. Methods: We extracted 4,654 nested-plot series with at least four different grain sizes between 0.0001 m² and 1,024 m² from the GrassPlot database spanning broad geographic and ecological gradients. Next, we calculated the slope parameter (z-value) of the power-law species–area relationship (SAR) to use as a measure of multiplicative beta diversity. We did this separately for vascular plants, bryophytes and lichens and for the three groups combined (complete vegetation). We then tested whether z-values differed between biomes, ecological-physi…
Is blockchain technology compatible with the Social and Solidarity Economy? Towards a new paradigm
2019
La significativa evolución que las tecnologías de la información han experimentado en los últimos años ha afectado a todos los sectores, incluido el de la Economía Social y Solidaria. El desarrollo emergente de la tecnología blockchain y sus posibilidades para modificar las formas de colaboración solidaria de la ciudadanía, presentan un reto actual y un cambio de paradigma para el Tercer Sector. El objeto del presente artículo es analizar las posibilidades existentes de que ambos ámbitos compartan valores, principios y objetivos. Para ello, en primer lugar y como punto de referencia, se presentan los conceptos de Economía Social y Solidaria y de blockchain. A continuación, se presentan las …
Turnover ratios and profitability ratios calculation methods: the book or average value
2019
The scientific literature of the turnover ratios and profitability ratios calculation offers to use book or average value of balance sheet calculation methods. Different schools of financial analysis nowadays offer many variations of the ratio calculations and even though the components of ratio formulas change, the meaning stays the same. The aim of this research is to analyze the turnover and profitability ratios, to study the different methods of calculation, based on different schools of financial analysis and empirical research results, and to create proposals for companies for the use of these methods for financial analysis. The authors of this paper are using the international scient…
Convergence Analysis of Distributed Set-Valued Information Systems
2016
This paper focuses on the convergence of information in distributed systems of agents communicating over a network. The information on which the convergence is sought is not rep- resented by real numbers, as often in the literature, rather by sets. The dynamics of the evolution of information across the net- work is accordingly described by set-valued iterative maps. While the study of convergence of set-valued iterative maps is highly complex in general, this paper focuses on Boolean maps, which are comprised of arbitrary combinations of unions, intersections, and complements of sets. For these important class of systems, we provide tools to study both global and local convergence. A distr…
Estadística en física de partícules: El seu paper en el descobriment del bosó de Higgs
2014
L’estadistica ha representat un paper d’enorme importancia en el desenvolupament de la fisica de particules, pionera de l’anomenada «gran ciencia». La seua aplicacio ha evolucionat al compas dels progressos tecnologics, que han permes passar de registrar uns pocs centenars de «successos» a registrar-ne milers de milions. Aquest article discuteix sobre com s’ha resolt el problema de la manipulacio d’aquestes quantitats massives de dades i com s’han utilitzat les principals eines estadistiques des dels anys 1990 per a cercar senyals cada vegada mes petits ocults entre un soroll de fons cada vegada major. Molts experiments en la historia de la fisica de particules podrien il·lustrar el paper q…
Celebrity endorsement: influence of fan identification and brand collision on brand awareness and perceived value
2020
El deporte es un fenómeno social y económico en continua expansión, que contribuye a la prosperidad y la solidaridad en los países desarrollados (Aragonés, 2014). Ha sido reconocido por el Comité Olímpico Internacional como una herramienta para el fomento de la paz y las relaciones entre diferentes culturas. En relación a su vertiente económica, sobre la que se centra la presenta tesis doctoral, los ingresos generados fueron de 127 millones de euros en 2015, tal y como habían señalado las previsiones (PWC, 2011) y dio empleo a 1.700 millones de europeos en 2016 (Eurostat, 2018). Además, dada su pujanza y crecimiento en las últimas décadas, la industria del deporte ha sido objeto de interés …
Ripostigli di bronzi nella Sicilia di età arcaica. Contesti di rinvenimento, funzioni e aspetti ponderali
2012
The contribution analyzes the structure, composition and contexts of the archaic age bronze hoards found in the colonial and anellenic sites of Sicily. The particular frequency of hoards in sacred areas is evident, where they are consecrated to the chthonic divinities due to their intrinsic value, linked to their metallic nature and their notion of weight.
Exploring the elements for value co-creation in consumer information systems in B2B context : a case study on the business event industry
2014
Tämä tutkielma tarkastelee arvon yhteisluontia verkkopalvelussa B2B-kontekstissa käyttäen tutkimuksen toimialana kaupallisia seminaareja ja koulutuksia. Viitekehyksenä tutkimuksessa käytetään arvon yhteisluonnin mallia kuluttajatietojärjestelmissä (CIS), jolla nähdään ammatillisten seminaarien ja koulutusten järjestäjien ja osallistujien (n=22) arvoja ja motivaatioita tapahtumiin osallistumiseen sekä tutkitaan myös mitkä ominaisuudet koetaan tarpeelliseksi toimialan tapahtumien promootioon perustuvaan verkkopalveluun. Tutkimuksen tavoitteena on tunnistaa arvon yhteisluonnin elementit sekä mahdollisia eroavaisuuksia verkkopalvelun B2B-käyttäjän käyttötarpeissa sekä järjestelmän käyttökokemuk…