1,721,010 research outputs found
Traffic Data Platform based on the Service Oriented Architecture (SOA)
Full text linkThe DLR Traffic Data Platform (TDP) that is currently being developed by the German Aerospace Center (DLR) is an autonomous decentralised ITS system for distributed
intelligent traffic data management and dissemination. Of course, there are many possibilities to design the architecture of such a traffic data platform where service oriented architecture (SOA) has been chosen for the current design of the TDP. In this paper the SOA design aspect of the TDP will be analysed and presented. The TDP as service provider is able to
store, manage, aggregate, process and fuse traffic data from different sources like floating
car data (FCD), loop detector data, remote sensing, video sensors and traffic relevant radar
data into common traffic states and supply them as services to the TDP clients or service
consumers who need these data to realize telematic services. The TDP is designed to
support not only “online” traffic information but also services like multimodal routing for
example. Having all these data in a single platform and making it available by providing
standardised ubiquitous access, research and the development of new methods as well as
the enhancement of existing methods such as data fusion, traffic state estimation, quality
evaluations and innovative telematic services could be facilitated. Thus, the TDP contributes
to more effective research in the field of traffic management
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Deutsche Patentanmeldung: Verfahren zur Positionsbestimmung von Verkehrsobjekten über die indirekte Ortung auf der Basis eines eindeutigen Merkmals
No full textOie Erfindung betrifft ein Verfahren und eine Vorrichtung zur Generierung von Verkehrs informationen, wobei die Vorrichtung mindestens einen Detektor umfasst, wobei der Detektor Mittel zur Bestimmung seiner räumlichen Position zumindest bezüglich des räumlichen Bereichs aufweist. wobei der Detektor Mittel zur Detektion mindestens eines Signals mindestens einer ersten Sendeeinheit aufweist, wobei der Detektor Mittel zur Identifikation einer Kennung der ersten Sendeeinheit aufweist, wobei der Detektor Mittel zur Übermittlung mindestens seiner räumliche Position und der Kennung der ersten Sendeeinheit an eine zentrale Einheit zur Generierung von Verkehrsinformationen aufweist
Anforderungsanalyse und Weiterentwicklung eines bestehenden Navigationssystems durch multimodale Aspekte für mobile Endgeräte
No full textZiel:
Analyse der Anforderungen an ein multimodales Navigationssystem und die Weiterentwicklung eines bestehenden Navigationssystems durch multimodale Aspekte. In der Anforderungsanalyse werden die Nutzeranforderungen in einer Befragung ermittelt und analysiert. Über die längerfristige Nutzung des multimodalen Navigationssystems und der entwickelten Funktionalitäten wird eine Verbesserung der zeitlichen und räumlichen Verteilung des Verkehrs auf die bestehende Infrastruktur sowie eine verstärkte Nutzung des ÖVs angestrebt.
Inhalt:
Untersuchung der Nutzeranforderungen an ein individuell-multimodales Zielführungssystem in einer Befragung
Auswertung der Befragung und Analyse der Ergebnisse
Entwicklung eines Moduls, das an vordefinierten P+R-Punkten den Anwender auf Umsteigemöglichkeiten in den ÖPNV und die hierbei zu erwartenden Reisezeiten hinweist
Entwicklung einer Komponente zur Abfrage von aktuellen Verkehrskamerabildern an bestimmten neuralgischen Punkten
Implementierung einer Schnittstelle für den Zugriff auf existierende Fahrplanauskünfte der Betreiber des öffentlichen Nahverkehrs
Design und Entwicklung einer zweckentsprechenden Benutzerschnittstelle (GUI) und exemplarische Umsetzung
Ergebnisdarstellung (Befragung, Softwareentwicklung, Einsatzmöglichkeiten, Verbesserungsvorschläge und Zukunftsbetrachtung
SIRENE: Secure and Intelligent Road Emergency Network
Full text linkChallenges for rescue services, fire brigades and police authorities are (1) high number of accidents during driving with special privileges and rights of way and (2) insufficient compliance with response times. The project's aim is to significantly improve and secure travel paths of emergency vehicles through technological optimisations. For this purpose, the routing of emergency forces is being optimised and two approaches for prioritising emergency vehicles at signalised intersections are being developed, simulated and evaluated
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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