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排序方式: 共有1013条查询结果,搜索用时 15 毫秒
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梁华国 《计算机科学技术学报》2002,17(2):0-0
In this paper a new scheme of mixed mode scan-based BIST is presented with complete fault coverage,and some new concepts of folding set and computing are introduced.This scheme applies single feedback polynomial of LFSR for generation pseudo-random patterns as well as for compressing and extending seeds of folding sets and an LFSR, where we encode seed of folding set as an initial seed of LFSR .Moreover these new techniques are 100% compatible with scan design .Experimental results show that the proposed scheme outperforms previously published approaches based on the reseeding of LFRSRs. 相似文献
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变质核杂岩体是区域性伸展构造的主要类型之一。安徽怀宁即是这种构造在大陆板块内部发育并得到保存的典型地区。通过区域大比例尺构造解析认为:怀宁古变质核杂岩体自下而上由变质核、基底剥离断层、褶叠层及盖层4个部分组成。其经历了2次伸展体制及2次收缩体制的构造叠加,形成了一个多期复合变形变质的古变质核杂岩体。 相似文献
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Wang Yanli; Lai Luhua; Li Shuwei; Han Yuzhaen; Tang Youqi 《Protein engineering, design & selection : PEDS》1996,9(6):479-484
The application of the mean force field in protein mutant stabilityprediction is explored. Based on protein main chain characteristics,including polar fraction, accessibility and dihedral angles,the mean force field was constructed to evaluate the compatibilitybetween an amino acid residue and its environment, from whicha position-dependent protein mutant profile was constructed.At each position along a protein sequence, the native residuewas replaced by the other 19 types of amino acid residues. Thematches were evaluated by energies from mean force field calculation,from which a mutant profile along the protein sequence was derived.General characteristics of such a profile were analyzed. Mutantstabilities for two sets of mutants in two proteins were foundto be reasonable compared with experimental data, which indicatesthat the present method can act as a guide in protein engineeringand as an effective scoring matrix in protein sequencestructurealignment studies. 相似文献
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Results on Bayesian classification procedures, optimal on structures such as Markov chain and independent features, are reviewed.
Numerical results of predicting protein secondary structure based on Bayesian classification procedures on non-stationary
Markov chains are discussed. Complementarity relations for encoding bases in one DNA strand are presented.
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Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 41–54, November–December 2007. 相似文献
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PMA(population migration algorithrn)算法具有较强的全局搜索能力和稳定性.针对PMA算法的思想,首次提出将人口迁移算法应用于蛋白质的折叠模拟中,并使用该算法求解蛋白质折叠构形预测的二维AB模型,对计算结果进行了分析. 相似文献
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A 9‐bit 80‐MS/s CMOS pipelined folding analog‐to‐digital converter employing offset‐canceled preamplifiers and a subranging scheme is proposed to extend the resolution of a folding architecture. A fully differential dc‐decoupled structure achieves high linearity in circuit design. The measured differential nonlinearity and integral nonlinearity of the prototype are ×0.6 LSB and ×1.6 LSB, respectively. 相似文献