The rate control mechanism for Available Bit Rate ABR tra c as de ned by the ATM Forum does not distinguish between di erent types of ABR connections However since ABR tra c may result from a heterogeneous set of applications there is an apparent need for a ow control scheme that can distinguish between and give di erential treatment to di erent classes of ABR connections In this study a multi ...

Shared-bus multiprocessors represent a mainstream of accepted and commercially viable computer systems. However, as microprocessors become faster and demand more bandwidth, the already limited scalability of shared-bus decreases even further. As an eeort, not a mutually exclusive but rather a complementary to developing better backplane bus, this paper considers adapting distributed shared-memo...

Objectives: The aim of this study was to compare polymerization depth of two bulk-fill and one conventional composite cured for different times. Methods: This in vitro experimental study was conducted on 54 composite samples (2×4×10mm) fabricated of Tetric N-Ceram bulk-fill, x-tra fil bulk-fill, and Grandio conventional composite cured for 20, 30, and 40 seconds. The microhardnes...

The tra-1 and tra-2 sex-determining genes promote female fates in Caenorhabditis elegans. Classical genetic studies placed tra-1 as the terminal regulator of the pathway with tra-2 acting upstream as a regulator of regulators of tra-1. Here we report the surprising result that the TRA-1 transcription factor binds the intracellular domain of the TRA-2 membrane protein. This binding is dependent ...

The Caenorhabditis elegans sex-determining gene tra-2 promotes female development and expresses 4.7-, 1.9- and 1.8-kb mRNAs. The 4.7-kb mRNA encodes the major feminizing activity of the locus, a predicted membrane receptor that mediates cell-to-cell communication, named TRA-2A. The tra-2 gene was characterized from a close relative, C. briggsae. The Cb-tra-2 gene expresses only a 4.7-kb mRNA an...

We describe a surprising new regulatory relationship between two key genes of the Drosophila sex-determination gene hierarchy, Sex-lethal (Sxl) and transformer (tra). A positive autoregulatory feedback loop for Sxl was known to maintain somatic cell female identity by producing SXL-F protein to continually instruct the target gene transformer (tra) to make its feminizing product, TRA-F. We disc...