This chapter reviews contemporary research on virtual collaboration. In particular, we focus on synchronous communication and collaboration processes in virtual conferencing environments. In a virtual conference, interactants are geographically distant but their avatars (virtual representations) appear in the same virtual conference room. Two types of virtual collaboration are examined. First, ...

The Java Virtual Machine [LY99] is an abstract machine designed to support object oriented languages. The strong security guarantees enforced by the JVM and it‘s portability make it a desirable target for distributing mobile code. Haskell [JHA99] is non-strict, higherorder functional language. Mapping non-strict higher order languages to any stock machine poses many unique challenges [Jon92]. M...

The line integral convolution (LIC) method, originally developed for imaging vector fields in scientific visualization, has the potential to produce images with directional characteristics. In this paper, we present four techniques to explore the use of LIC in generating images in the style of the Impressionists. In particular, we develop an Impressionist Line Integral Convolution algorithm (IL...

Equivalence classes of virtual knot diagrams are in a one to one correspondence with knot diagrams (decorated immersions of S1) in orientable, closed surfaces modulo stable handle equivalence and Reidemeister moves. Each virtual knot diagram corresponds to a diagram in a unique minimal surface. If a virtual knot diagram is equivalent to a classical knot diagram then this minimal surface is a sp...

In this paper, we explore a new paradigm for natural language communication with autonomous agents. While the dominant paradigm is to use natural language instructions from which the agent behaviour is generated, we investigate how natural language input can influence a pre-existing planbased behaviour, by interfering with the various types of sub-goals in such a plan. Using as a testbed a full...

Alongside spoken communication human conversation has a non-verbal component that conveys complex and subtle emotional and interpersonal information. This information is conveyed largely bodily with postures, gestures and facial expression. In order to capture the Kansei aspects of human interaction within a virtual environment, it is therefore vital to model this bodily interaction. This type ...

Recent results from NLO QCD calculations for inclusive jet cross sections in γ∗γ-scattering at ee colliders, especially for LEP, are reported. The virtuality Q of the virtual photon is non-zero and can be unlimited large. The virtuality of the second photon is zero and the spectrum is calculated with the Weizsäcker-Williams approximation. Four components of the cross sections have to be disting...

Virtual environments are interactive and immersive merging of several media consisting of mainly 3D graphics, sound, touch, and smell. This chapter describes recent efforts in human animation, selfguided synthetic actors and camera-based virtual environments. We explore the usefulness of the sense of touch experiments. Virtual environments provide a common platform for merging image and 3D data...

abstract- this study aims to model optimal cultivation pattern based on the maximization of importing virtual water and social net income of major crops in marvdasht, iran. for this purpose, a linear programming model was developed considering constraints of virtual water and land limitations followed by other models to include employment restrictions. based on the findings, wheat and tomato we...