This paper discusses an ongoing adaptation of a decision making synchronous/asynchronous common environment for computer supported cooperative work (SACE-CSCW) for a distributed videoconferencing multimedia/ hypermedia concurrent engineering (CE) system to run over the Web. The SACE environment is being redesigned to incorporate this application area and its actual models are being extended to ...

The concept of context can be used with advantage in the area of Computer-Supported Cooperative Work. For many years, the awareness term has been used in this area without explicit association to context. This paper attempts to clarify their relationship. In particular, a framework is proposed to understand context and awareness as connected to other concepts used in group work as well, such as...

In Web-based CSCW (Computer-Supported Cooperative Work) often including cooperative learning, different from face-to-face communication, partners' situations including their interest, concentration, boredom, and tiredness cannot be easily transmitted. To overcome these problems, “Augmented Cyberspace” for dependable Web-based CSCW Systems, is proposed, which is also applicable to system such as...

Research has focused significantly in enabling the Web (WWW) for Computer Supported Cooperative Work (CSCW). However, surfing, the most common use in the WEB, remains an individual, rather than group activity. Previous attempts to provide collaborative browsing capability constrain some users to the command of a selected user who controls the browsers of others. We adapt the technology of uncon...

Interaction among actors involved in a Web-based learning environment is widely thought of as a valuable process, in that it stimulates collaborative work and augments the effectiveness of learning itself. This may be extensively achieved by the integration of groupware tools and techniques, originally coming from the Computer-Supported Cooperative Work discipline. This paper reports on MEDIT, ...

What unites CSCW research is the need to help people work together (Greif, 1988) or, to be more precise, "...the support requirements of cooperative work." (Bannon & Schmidt, 1989). An important contribution to the understanding of these requirements, therefore, are the results from research into group working, its structure, and dynamics. A well recognised concept in group work is the role of ...

O ral implants are valuable tools in the prosthetic reconstruction of partially edentulous jaws. These reconstructions may be performed in two principally different ways: (1) free-standing implant-supported bridges (2) tooth-implant-supported bridges. The advantages and drawbacks of splinting teeth and implants have been discussed in the literature. The tooth-implant connections were early ques...

the silica supported platinum nanoparticles was synthesized by using the sol-gel method. the possibility of using diamminedinitro platinum (ii) as pt precursor and effect of metal precursor concentration on the final pt nanoparticle size was investigated. a stable silica sol was prepared via hydrolysis of tetraethyl orthosilicate (teos) as a metal alcoxide and condensation reaction. subsequentl...

the aim of this research is to study ni2+ supported on hydroxyapatite-core-shell magnetic γ-fe2o3 nanoparticles (γ-fe2o3@hap-ni2+) as a green and recyclable catalyst for the biginelli reaction under solvent-free conditions. one-pot multi-component condensation of 1,3-dicarbonyl compounds, urea and aldehydes at 80 oc affords the corresponding compounds in high yields and in short reaction times ...

poly(p-n-chlorostyrenesulphonamide) synthesized via direct chlorination of poly[(p-styrene) sulphonamide], can be used for selective chlorination of aromatic compounds. aromatic rings of the anisole, p-xylene, ethylbenzene and toluene are chlorinated with good yields. the polymer can be recovery, rechlorinated and reused several times.