Let's Dance: A Language for Service Behavior Modeling

In Service-Oriented Architectures (SOAs), software systems are decomposed into independent units, namely services, that interact with one another through message exchanges. To promote reuse and evolvability, these interactions are explicitly described right from the early phases of the development lifecycle. Up to now, emphasis has been placed on capturing structural aspects of service interactions. Gradually though, the description of behavioral dependencies between service interactions is gaining increasing attention as a means to push forward the SOA vision. This paper deals with the description of these behavioral dependencies during the analysis and design phases. The paper outlines a set of requirements that a language for modeling service interactions at this level should fulfill, and proposes a language whose design is driven by these requirements.

here/there/then/now

here/there/then/now was a practice-led research project that brought together 10 independent artists in dance, music, theatre and visual/media arts to create a site-specific program within the walls of the Brisbane Powerhouse. The purpose was to explore how to best conceive flexible performance platforms, theatricalise site-specific work and engage new audiences through forms of promenade experience that could provide open choices on how and where to view it. The sold out season of 6 performances, which took place 14-19 May 2002, presented three discrete performance installations set in intimate parts of the building, each with their own aesthetic and communicative intention, culminating in a fourth in-theatre installation, where memories of the first three coalesced and were reinterrogated. Each site thereby investigated meaning-making via the moving body and its critical relationship with space and objects, in a dramatic re-contextualisation of traditional solo dance forms, now re-articulated through interdisciplinary practices. The benefit of this approach was the creation of a layered and multimodal experience that could be both shared and subsequently critiqued by performers and audience alike.

Characterization of commercial double-walled carbon nanotube material : composition, structure, and heat capacity

A purified commercial double-walled carbon nanotube (DWCNT) sample was investigated by transmission electron microscopy (TEM), thermogravimetry (TG), and Raman spectroscopy. Moreover, the heat capacity of the DWCNT sample was determined by temperature-modulated differential scanning calorimetry in the range of temperature between -50 and 290 °C. The main thermo-oxidation characterized by TG occurred at 474 °C with the loss of 90 wt% of the sample. Thermo-oxidation of the sample was also investigated by high-resolution TG, which indicated that a fraction rich in carbon nanotube represents more than 80 wt% of the material. Other carbonaceous fractions rich in amorphous coating and graphitic particles were identified by the deconvolution procedure applied to the derivative of TG curve. Complementary structural data were provided by TEM and Raman studies. The information obtained allows the optimization of composites based on this nanomaterial with reliable characteristics.