Search results for "database."
showing 10 items of 2119 documents
Data service platform for sentinel-2 surface reflectance and value-added products: System use and examples
2016
This technical note presents the first Sentinel-2 data service platform for obtaining atmospherically-corrected images and generating the corresponding value-added products for any land surface on Earth (http://s2.boku.eodc.eu/). Using the European Space Agency’s (ESA) Sen2Cor algorithm, the platform processes ESA’s Level-1C top-of-atmosphere reflectance to atmospherically-corrected bottom-of-atmosphere (BoA) reflectance (Level-2A). The processing runs on-demand, with a global coverage, on the Earth Observation Data Centre (EODC), which is a public-private collaborative IT infrastructure in Vienna (Austria) for archiving, processing, and distributing Earth observation (EO) data (http://www.…
A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins
2018
Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent problem resulting from nutrient pollution and climate-change induced stressors, like poor transparency, increased water temperature and enhanced stratification. Consistency in data collection and analysis methods is necessary to achieve fully comparable datasets and for statistical validity, avoiding issues linked to disparate data sources. The Europea…
Comprehensive database on Induan (Lower Triassic) to Sinemurian (Lower Jurassic) marine bivalve genera and their paleobiogeographic record
2014
Marine bivalve genera that were described or mentioned for Triassic and Lower Jurassic deposits worldwide are reviewed in terms of their validity, stratigraphic range, paleogeographic distribution, paleoautoecology and shell mineralogy. Data were originally compiled at species level and are arranged systematically. A brief discussion for each genus includes synonymy, taxonomic status and included subgenera, as well as current uncertainties about their validity and range. The distribution of each genus is also shown on paleogeographic maps. Type species and first and last appearances of each genus are also mentioned. We recognize as valid 280 genera and their included subgenera, and we furth…
Complexity in project co-creation of knowledge for innovation
2020
The European Union (EU) promotes collaboration across functions and borders in its funded innovation projects, which are seen as complex collaboration to co-create knowledge. This requires the engagement of multiple stakeholders throughout the duration of the project. To probe complexity in EU-funded innovation projects the research question is: How does complexity affect the co-creation of knowledge in innovation projects, according to project participants? The data for this study was collected from project experts in the form of short narratives, using a questionnaire based on the elements of complexity of Mitleton-Kelly (2003). The results indicate that complexity characterises the co-cr…
International database on human capital quality
2007
In this research work, we have used a methodology which enables us to obtain qualitative indicators of human capital (QIHC) for 105 countries. This methodology relies on the potential to reconsider survey results comparatively by analysing the results of countries which took part in at least two different surveys. This allowed us to build indicators of comparable data concerning the quality of human capital in numerous countries and between 1964-2005: our results represent a valuable comparison to what has been done so far.
Explaining the process of change taking place in legal rules and social norms: The cases of institutional economics and new institutional economics
1995
This paper deals with the phenomenon of institutional change and has been conceived as an attempt to answer the following question: Can we retain theimage of institutional change contained in a theory when we replace a methodological foundation on which the theory was built by a different and alternative one? For an answer to be developed, special attention is paid to the contributions made by institutional economists (IE) and those made by transaction cost—new institutional economists (NIE). The question clearly shows that it is a paper on applied methodology rather than a survey on institutional change contributions. Because of that, its main purpose is not to increase our knowledge about…
How consistent are perceptions of inequality?
2020
Abstract Despite recent empirical evidence on the importance of perceived inequality, its analysis is still underexplored. In this paper we study whether unobserved perceptions of inequality are reflected in observed individual opinions in a consistent fashion. Inconsistency is relevant to ealuate the level of agreement that individuals share with respect to different domains of inequality. Using the wave from the 2009 International Social Survey Program in the US, we show that inequality is a complicated concept prone to inconsistencies and propose a testing procedure to an empirical appraisal. We find that inconsistencies exist though they may not extend to all the domains of inequality. …
The Trade Creation Effect of Immigrants: Evidence from the Remarkable Case of Spain
2010
There is abundant evidence that immigrant networks are associated with larger exports from the country where they settle to their countries of origin. The direction of causality of this association is less clearly established. Also, we do not know to what extent these increased exports are due to an increase in the number of exporting firms (i.e. the extensive margin of trade) or due to larger values exported by existing firm (i.e. the intensive margin). Using micro data on individual trade transactions from Spanish provinces between 1995 and 2008 and data on the stock of immigrants in those provinces by country of origin we can make progress on both fronts. The richness of our data allows …
Inequality in Spain 1973-91: Contribution to a regional database
2001
This paper provides the methodology and results of a database of inequality indices for the fifty provinces and seventeen regions of Spain on the basis of the Household Budget Surveys for the years 1973/74, 1980/81 and 1990/91. The inequality indicators considered are the indices of Gini, Theil (0), Theil (1) and Atkinson (1), as well as the distribution by deciles of the population. These indicators are drawn up for three variables: total income, total expenditure, and exclusively monetary expenditure. The variables are also expressed in terms of households, per capita and per capita equivalent. All are available on the Internet (http://www.ivie.es).
Efficient Graph Models for Retrieving Top-k News Feeds from Ego Networks
2012
A key challenge of web platforms like social networking sites and services for news feed aggregation is the efficient and targeted distribution of new content items to users. This can be formulated as the problem of retrieving the top-k news items out of the d-degree ego network of each given user, where the set of all users producing feeds is of size n, with n >> d >> k and typically k