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劳兰Xun 《汕头大学学报(自然科学版)》1997,12(1):9-14
本文提出在GMDH中利用“新息贡献”准则选择关键变量(包括初始变量和中间变量)、自动构成最优部分多项式,并且给出了递推算法以避免重复运算,从而优化了模型结构,提高了精度,简化了建模过程。最后用仿真例子验证了新方法的有效性。 相似文献
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HAO Liming SUN Xun YANG Shutang LU Songnian 《武汉大学学报:自然科学英文版》2007,12(1):101-104
Trusted computing (TC) technology is brought out by trusted computing group (TCG) to make computing as safe and reliable as people expect. Attestation is one main function specified by TCG, which is the means by which a trusted computer assures a remote computer whose platform is not tampered with. There are two protocols that implement attestation without disclosing the platform's real identity, which are Privacy CA-based protocol and direct anonymous attestation (DAA) protocol. However, in the first protocol the privacy CA is the bottleneck and the platform's identity will be disclosed if the privacy CA is compromise, while DAA protocol can do profiling when dealing with rogue hardware device. In this paper, we propose a DAA-extended new approach to ensure full anonymous attestation that can not only detect a rogue TPM, but also reveal rogue TPM's real identity. 相似文献
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Xun Luo Hongxia Ma 《系统科学与信息学报》2006,4(1):13-17
This paper analyzes the correlativity between new products output and science & technology resources input by the method of Gray Relevancy model, and finds that the spending for new products has greatest correlativity with new products output in large and medium sized state-owned industrial enterprises. 相似文献
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ZHANG DongShi CHEN Feng LIU HeWei WANG XianHua DU Kai SI JinHai & HOU Xun Shaanxi Key Laboratory of Photonic Technology for Information School of Electronics & Information Engineering Xi’an Jiaotong University Xi’an China 《科学通报(英文版)》2010,55(9):877-881
Aiming at fabrication of complex microstructures and micro-patterns, a kind of femtosecond laser micromachining technology based on the BMP image edge tracing was proposed. We introduced the general principle of this technology and discussed the implementation of the machining paths extraction, optimization, tracing and the feedback of the machining procession in detail. On the basis of this technology, control software for femtosecond laser micromachining was developed. Furthermore, we have accomplished the fabrication of complicated two-dimensional (2D) micro-patterns on a copper thin film. The results indicate that this technology can be used for digital control micromachining of complex patterns or microstructures at micron and submicron scales by femtosecond laser. 相似文献
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1 IntroductionInRef.〔1〕 theasymptoticstabilityofnonlinearslowlychangingsystemhasbeendiscussed .InRef.〔2〕theinstabilityofsolutionforthethirdorderlineardif ferentialequationwithvariedcoefficienthasbeendis cussed .Inthispaper,wehavediscussedstablilityandinsta… 相似文献
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Yijie Shi Ying Feng Zhiwei Wang Xun Wang Yunpeng Jiang Jiguang Deng Hongxing Dai Yuxi Liu 《自然科学进展(英文版)》2023,(4):526-533
Light-driven photothermocatalytic oxidation is a promising method for the elimination of volatile organic compounds(VOCs). The Co3O4, 0.46 Pt/Co3O4 and 0.97 Pt/Co3O4 catalysts were fabricated via the simple molten salt and incipient wetness impregnation method. Compared with Co3O4 and 0.46 Pt/Co3O4 , the 0.97 Pt/Co3O4 catalyst showed higher photothermocatalytic perf... 相似文献
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主要研究了奇异系统的稳定性问题,通过Lyapunov方程和Lyapunov函数给出了奇异系统渐进稳定的判定准则,利用本提供的方法,可以较容易的解决奇异系统的稳定性问题。 相似文献
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GONG Xun hua 《系统科学与复杂性》2000,(1)
1.IntroductionLetXbeavectorspace,Ybeatopologicalvectorspace,Zbealocallyconvexspace,andletthetopologicaldualspacesofYandZbedenotedbyY*andZ*,respectively.LetCbeapointedconvexconeinYandKbeaclosedconvexpointedconeinZ.ThedualconesofCandKaredefinedasrespec... 相似文献