Browsing by Issue Date, starting with "1995-12"
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- On the positivity of solutions to the Smoluchowski equationsPublication . Costa, Fernando Pestana daThe dynamics of cluster growth can be modelled by the following infinite system of ordinary differential equations, first proposed by Smoluchowski, [8], where cj=cj(t) represents the physical concentration of j-clusters (aggregates of j identical particles), aj,k=aj,k≥0 are the time-independent coagulation coefficients, measuring the effectiveness of the coagulation process between a j-cluster and a k-cluster, and the first sum in the right-hand side of (1) is defined to be zero if j = 1.
- Distance training of X applications through a multimedia co-authoring architecturePublication . Marcos, Adérito; Ferreira, Benjamim; Hornung, ChristophThe aim of the paper is to propose a global cooperative model for distance training of X Windowns applications. Our considerations are based on the experience and results acquired throughout the development of or own prototype: the VirtualX system.