This paper attempts to argue that the future for computer-assisted assessment lies in its ability to affect change in the thinking of educators in the HE environment. As an innovative practice with considerable proven success CAA has the capability of triggering much wider and informed debate in the sector that responds in real ways to issues of lifelong learning, employability and development ...

Volumetric 3D displays are frequently purported to lack the ability to reconstruct scenes with viewer-position-dependent effects such as occlusion. To counter these claims, a swept-screen 198-view horizontal-parallax-only 3D display is reported here that is capable of viewer-position-dependent effects. A digital projector illuminates a rotating vertical diffuser with a series of multiperspectiv...

The production learning of vocalizations by manipulation of the sound production organs to alter the physical structure of sound has been demonstrated in only a few mammals. In this natural experiment, we document the vocal behaviour of two juvenile killer whales, Orcinus orca, separated from their natal pods, which are the only cases of dispersal seen during the three decades of observation of...

Global vision consensus on the next generation of wireless mobile communications, broadly termed 4G, sketches a hybrid infrastructure, comprising different wireless access systems in a complementary manner and vested with reconfiguration capabilities that facilitate a flexible and dynamic adaptation of the wireless infrastructure to meet the ever-changing service requirements. We identify essen...

Today we experience the proliferation of social networking applications. However mobile devices are only scarcely involved as individual members in such networks. In this paper we investigate how mobile phones can participate in social networks. The phonebook of the mobile devices represents basically a small social network which belongs to the owner of the device. The paper introduces mobile-c...

This paper discusses the conditions for the integration of a software companion into a distance training system. The study context is that of Croisières, a device to learn French. The main questions raised when integrating a software companion into such a device can be answered by defining the various roles that the companion plays for the learner, by defining a written dialogue that can be est...

A critical challenge to creating effective agent-based systems is allowing them to operate effectively when the operating environment is complex, dynamic, and error-prone. In this paper we will review the limitations of current “agent-local” approaches to exception handling in agent systems, and propose an alternative approach based on a shared exception handling service that is “plugged”, with...

A procedure for cell fractionation using lectin-affinity chromatography is described . It consists of a single affinity adsorbent, hog gastric mucin blood group A+H substance covalently coupled to Sephadex or Sepharose, to which lectins of various specificities can bind . The complex formed, lectin -, hog A+H substanceSephadex, then serves as an affinity probe for isolating and fractionating ce...

With its new features such as multi-homing, multi-streaming, and enhanced security, the Stream Control Transmission Protocol (SCTP) has become a promising candidate to join UDP and TCP as a general-purpose transport layer protocol. Multiple streams in an SCTP association provide an aggregation mechanism to accommodate heterogeneous objects, which belong to the same application but may require d...

Often, the behavior of animals can be better explained and predicted, it seems, if we ascribe the capacity to have beliefs, intentions, and concepts to them. Whether we really can do so, however, is a debated issue. Particularly, Donald Davidson maintains that there is no basis in fact for ascribing propositional attitudes or concepts to animals. I will consider his and rival views, such as Col...