We consider the suitability of three types of language for the implementation of image processing algorithms on FPGAs; Hardware Description Languages, Parallel Language Extensions, Serial Language Extensions. We discuss the requirements for a language for this purpose and identify the weaknesses of four specific languages, VHDL, SystemC, Handel-C, SA-C and Match. Finally, we propose VERTIPH, a ...

Handel-C is a convenient tool for high-level design for FPGAs. Platform FPGAs, with high-levels of integration are suitable as packet processing devices. An existing ATM packet-switching design has been augmented with a CAM, with a simplified control structure, by the addition of a back-pressure mechanism, and a new shared-memory buffering scheme. The paper gives details of the Handel-C impleme...

This paper discusses the semantics of the prialt construct in HandelC[1]. The language is essentially a static subset of C, augmented with a parallel construct and channel communication, as found in CSP. All assignments and channel communication events take one clock cycle, with all updates synchronised with the clock edge marking the cycle end. The behaviour of prialt in Handel-C is similar in...

Field experiments were conducted to study weed population shifts in long-term conservation tillage systems. The objectives of this study were to determine weed community abundance, diversity and composition on conventional tillage (CT), minimum tillage (MT), no-tillage with paraplow (ZT) and no-tillage (NT) systems, and to identify species that are associated with specific tillage systems. The ...

We have determined a 35-kb sequence of the groESL-gutR-cotA (45 degrees-52 degrees) region of the Bacillus subtilis genome. In addition to the groESL, gutRB and cotA genes reported previously, we have newly identified 24 ORFs including gutA and fruC genes, encoding glucitol permease and fructokinase, respectively. The inherent restriction/modification system genes, hsdMR and hsdMM, were mapped ...

In the present study we show that recombinant bacterial CotA-laccase from Bacillus subtilis is able to decolourise, at alkaline pH and in the absence of redox mediators, a variety of structurally different synthetic dyes. The enzymatic biotransformation of the azo dye Sudan Orange G (SOG) was addressed in more detail following a multidisciplinary approach. Biotransformation proceeds in a broad ...