Diets estimated from different proxies such as stable isotopes, stomach contents, and dental microwear often disagree, leading to nominally well-supported but greatly differing estimates of diet for both extinct and extant species that complicate our understanding of ecology. We show that these perceived incongruences can be caused by proxies recording diet over vastly different timescales. Fie...

According to legislation introduced in 2009, all English local authorities were expected to implement an online petitioning facility by the end of 2010. This mandate offers a unique opportunity to assess the impact of a national eParticipation policy at such scale focusing on a particular engagement tool. A web content analysis methodology was used to collect data from the 353 English local gov...

This paper describes one approach for calculating the cohomology of a particular complex which arises in knot theory and which is used to prove the existence of ‘associators’, a key ingredient in the construction of a universal knot invariant. The approach taken is to show that the relevant complex can be interpreted, essentially, as the cohomology of the functor Hom(K, C), where C is the coalg...

This project attempts to improve electronic portfolio software through the creation of a design model using ownership, ease of use, and social learning variables to predict user adoption. The pilot software attempts to encourage student learning by enhancing peer interaction. The software was used by two groups of students. The first group used it to submit course portfolios as a department-wid...

This paper presents the approach of the Glocal European funded project towards the co-production of news on World events, on an information marketplace involving both amateurs and professionals. It discuss the rise of user-generated content amongst worldwide media and how event modelling and technology usage may help to foster this pro-am collaboration. Glocal: Event-based Retrieval of Networke...

Zur Beantwortung der Frage, warum Bildersuchen auf Schlüsselwörtern basieren, statt auf den bildimmanenten Informationen, werden Repräsentationsmöglichkeiten für Bildinformationen vorgestellt, die Personen in die Lage versetzen, Anfragen in Form von Bildinformationen statt Schlüsselwörtern zu formulieren. Die Bildinformationen sollen in einer Weise interpretiert werden, die dem subjektiven Empf...

We propose a two-stage process to explain the relationship between the local news environment and citizen engagement. Our original content analysis of newspaper coverage in every US House district during the 2010 midterms reveals that districts with uncompetitive races and those served by large-circulation outlets see significantly less, and less substantive, coverage than hotly contested distr...

Veränderte produktionslogistische Rahmenbedingungen und neue Ziele im Supply Chain Management (SCM) erfordern ein Redesign aktueller Supply Chain Planning (SCP)-Systeme. In-Memory-basierte betriebliche Informationssysteme bieten viele Vorteile und können bei der Definition neuer SCM-Systeme zugrunde gelegt werden. Allerdings sind noch Defizite in der Datenorganisation und den User Interfaces zu...

The interpretation of complex discourse, such as arguments, is a difficult task that often requires validation, i.e., a system may need to present its interpretation of a user’s discourse for confirmation. In this paper, we consider the presentation of discourse interpretations in the context of a probabilistic argumentation system. We first describe our initial approach to the presentation of ...