| 1. |
- Li, Z., et al.
(författare)
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Design for mixed-signal SoC with IPv4 for embedded instruments
- 2007
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Ingår i: 2007 8th International Conference on Electronic Measurement and Instruments, ICEMI. - : IEEE. - 1424411351 - 9781424411351 ; , s. 269-273
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Konferensbidrag (refereegranskat)abstract
- A SoC architecture used for with 8-bit CPU and IPv4 hardware is designed in this paper. The SoC is designed for embedded instrument. In additional, to according with the information transmission requirement of smart control system, the function of IPv4 is simplified to reduce the hardware. A function model used for model checking is also given. The function model is very simple and easy to be used in practice because we only take care about the transceiver function of IPv4 hardware.
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| 2. |
- Luo, L., et al.
(författare)
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DFG model of real time character for instruments designed with embedded system
- 2007
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Ingår i: 2007 8th International Conference on Electronic Measurement and Instruments, ICEMI. - : IEEE. - 1424411351 - 9781424411351 ; , s. 4830-4833
-
Konferensbidrag (refereegranskat)abstract
- A modeling method for analyzing the real time character of the instruments design with embedded technology was addressed in this paper. Analyzing and verifying of real time property in the instruments with embedded technology design is a crucial challenge. An analog and digital co-analysis method was given after the discussion for describing the real time property of an embedded system with time factors' set. And also, the data flow graph (DFG) is used in the modeling processing. At last of the paper, it is shown that the real time model could be used in mixed-signal SoC design.
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| 3. |
- Qu, Yanhua, 1974-, et al.
(författare)
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Postglacial colonization of the Tibetan plateau inferred from the matrilineal genetic structure of the endemic red-necked snow finch, Pyrgilauda ruficollis.
- 2005
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Ingår i: Molecular Ecology. - 0962-1083 .- 1365-294X. ; 14:6, s. 1767-81
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Tidskriftsartikel (refereegranskat)abstract
- Most phylogeographical studies of postglacial colonization focus on high latitude locations in the Northern Hemisphere. Here, we studied the phylogeographical structure of the red-necked snow finch Pyrgilauda ruficollis, an endemic species of the Tibetan plateau. We analysed 879 base pairs (bp) of the mitochondrial cytochrome b gene and 529 bp of the control region in 41 birds from four regional groups separated by mountain ranges. We detected 34 haplotypes, 31 of which occurred in a single individual and only three of which were shared among sampling sites within regional groups or among regional groups. Haplotype diversity was high (h = 0.94); nucleotide diversity was low (eth = 0.00415) and genetic differentiation was virtually non-existent. Analyses of mismatch distributions and geographically nested clades yielded results consistent with contiguous range expansion, and the expansion times were estimated as 0.07-0.19 million years ago (Ma). Our results suggest that P. ruficollis colonized the Tibetan plateau after the extensive glacial period (0.5-0.175 Ma), expanding from the eastern margin towards the inner plateau. Thus, in contrast to many of the post-glacial phylogeographical structures known at high latitudes, this colonization occurred without matrilineal population structuring. This might be due to the short glacial cycles typical of the Tibetan plateau, adaptation of P. ruficollis to cold conditions, or refugia and colonized habitat being semicontinuous and thus promoting population mixing.
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