36 research outputs found
Evolution of interdisciplinarity in biodiversity science
The study of biodiversity has grown exponentially in the last thirty years in response to demands for greater understanding of the function and importance of Earth's biodiversity and finding solutions to conserve it. Here, we test the hypothesis that biodiversity science has become more interdisciplinary over time. To do so, we analyze 97,945 peerâreviewed articles over a twentyâtwoâyear time period (1990â2012) with a continuous time dynamic model, which classifies articles into concepts (i.e., topics and ideas) based on word coâoccurrences. Using the model output, we then quantify different aspects of interdisciplinarity: concept diversity, that is, the diversity of topics and ideas across subdisciplines in biodiversity science, subdiscipline diversity, that is, the diversity of subdisciplines across concepts, and network structure, which captures interactions between concepts and subdisciplines. We found that, on average, concept and subdiscipline diversity in biodiversity science were either stable or declining, patterns which were driven by the persistence of rare concepts and subdisciplines and a decline in the diversity of common concepts and subdisciplines, respectively. Moreover, our results provide evidence that conceptual homogenization, that is, decreases in temporal ÎČ concept diversity, underlies the observed trends in interdisciplinarity. Together, our results reveal that biodiversity science is undergoing a dynamic phase as a scientific discipline that is consolidating around a core set of concepts. Our results suggest that progress toward addressing the biodiversity crisis via greater interdisciplinarity during the study period may have been slowed by extrinsic factors, such as the failure to invest in research spanning across concepts and disciplines. However, recent initiatives such as the Intergovernmental ScienceâPolicy Platform on Biodiversity and Ecosystem Services (IPBES) may attract broader support for biodiversityârelated issues and hence interdisciplinary approaches to address scientific, political, and societal challenges in the coming years
Genau betrachtet : FiGARO - Fernerkundungsdaten im Gigabit-Netz
Im Anwendungsprojekt FiGARO werden digitale Fernerkundungsdaten mit einem flugzeuggetragenen hochauflösenden Stereosensor erfasst, die Rohdaten aufbereitet und den Nutzern zur VerfĂŒgung gestellt. Der bei der Bearbeitung hochauflösender Bilddaten anfallende sehr hohe Zeit-, Rechen- und Speicheraufwand soll so verteilt und minimiert werden, dass ein kurzfristiger Einsatz der Daten auf fĂŒr Anwendungen mit sehr kurzer Vorlaufzeit möglich wird (z.B. Katastrophenschutz, Umweltmanagement). Durch die Kooperation der Technischen UniversitĂ€t Berlin (TUB) mit dem Deutschen Zentrum fĂŒr Luft- und Raumfahrt (DLR) in Berlin soll die Bearbeitung und Bereitstellung dieser umfangreichen Fernerkundungsdaten ĂŒber das Gigabit-Hochleistungsnetz GTB-SĂŒd/Berlin konzeptionell erarbeitet und netzwerktechnisch realisiert werden. Das Projekt wird vom DFN-Verein mit Mitteln des Bundesministeriums fĂŒr Bildung und Forschung (BMBF) gefördert