Zur Unterstützung der Kommunikation in kollaborativen Lernumgebungen werden häufig Chats eingesetzt. Dabei unterstützen explizite Referenzierungen in Chatdiskussionen das direkte Erkennen von Zusammenhängen und ermöglichen die Darstellung in Diskussionssträngen sowie die anschließende Analyse der Diskursstruktur. Die Evaluation eines Universitätsseminars, in dem die Referenzierungsfunktionalitä...

This paper introduces the ScrollSearcher, an enhanced scrollbar that provides users with an overview of the results of text searches and allows users to explore the results using direct manipulation. The ScrollSearcher maintains the original presentation of documents and allows users to combine searches so dependencies between different searches can be studied.

The macro-commands of the PSTricks package offer impressive additional capabilities to (L)TEX users, by giving them direct access to much of the power of PostScript, including full support for color. The purpose of this article is to outline the implementation of a few of the features of PSTricks (version 0.94).

Quasi-logarithmic combinatorial structures are a class of decomposable combinatorial structures which extend the logarithmic class considered by Arratia, Barbour and Tavaré (2003). In order to obtain asymptotic approximations to their component spectrum, it is necessary first to establish an approximation to the sum of an associated sequence of independent random variables in terms of the Dickm...

This paper examines one of the basic tenets of UK industrial policy, that attracting inward investment into the UK stimulates domestic productivity growth. A model of productivity growth is developed for the indigenous sector of UK manufacturing, linking domestic productivity growth to theoretical explanations of inward investment. The paper demonstrates that inward investment does stimulate pr...

Asymmetric Fano resonances are predicted to occur in the linear electronic conductance across a shallow quantum well in a high magnetic field. The Fano lineshape results from the interference between direct transmission and transmission via a quasi-bound state in the well which is weakly mixed with the continuum by tilting the field. The resonance width increases with tilt angle but general S-m...

This paper proposes a computational approach for generation of reference path for upper-limb exoskeletons considering the scapulohumeral rhythms of the shoulder. The proposed method can be used in upper-limb exoskeletons with 3 Degrees of Freedom (DoF) in shoulder and 1 DoF in elbow, which are capable of supporting shoulder girdle. The developed computational method is based on Central Nervous ...