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Merging top and bottom ranks into a single rank, creates a Wrapped Butterfly Network. [1] In figure 1, if rank 3 nodes are connected back to respective rank 0 nodes, then it becomes a wrapped butterfly network. BBN Butterfly, a massive parallel computer built by Bolt, Beranek and Newman in the 1980s, used a butterfly interconnect network. [2]
The Butterfly was initially developed as the Voice Funnel, a router for the ST-II protocol intended for carrying voice and video over IP networks. The Butterfly hardware was later used for the Butterfly Satellite IMP (BSAT) packet switch of DARPA's Wideband Packet Satellite Network which operated at multiple sites around the US over a shared 3 ...
A Beneš network is a rearrangeably non-blocking network derived from the clos network by initializing n = m = 2. There are (2log(N) - 1) stages, with each stage containing N/2 2*2 crossbar switches. An 8*8 Beneš network has 5 stages of switching elements, and each stage has 4 switching elements. The center three stages has two 4*4 benes network.
Butterfly Network. The butterfly network [8] is often used to illustrate how linear network coding can outperform routing. Two source nodes (at the top of the picture) have information A and B that must be transmitted to the two destination nodes (at the bottom). Each destination node wants to know both A and B.
English: The butterfly network, a communications network used in distributed computing and fast Fourier transform algorithms. The highlighted red nodes and edges show the subset of the butterfly reachable from one of its nodes. For each subset, the reachable subgraph forms a complete binary tree, showing that the butterfly is a multitree.
English: This butterfly network was first introduced in "Network information flow," IEEE Transaction on Information Theory by Prof. R. Ahlswede, Dr. N. Cai, Prof. S.-Y. R. Li and Prof. R. W. Yeung. Original raster version by Ckngai SVG created by dnet
Charvat is best known for his through-wall radar imaging system [1] [2] and his project-based MIT short-course on radar, where each student builds their own radar system. [3] [4] This radar course has been adopted by numerous other universities and institutions.
eButterfly is an online database of butterfly observations that collects data on butterfly abundance, distribution and phenology across North America.Naturalists, entomologists and other citizen scientists contribute observations in checklist form and the aggregated information is available through mapping and queries tools on eButterfly.