SRv6技术探讨

SR技术通过扩展IGP协议实现segment信息的交互,进而实现基于业务、拓扑等的SR-TE流量工程,基于TI-LFA FRR可保障任意网络拓扑的高可靠性。SR在数据平面支持MPLS和IPv6 2种封装方式,既继承了MPLS技术的优势,又能适应IPv6、SDN等技术的发展,极大地降低了网络协议部署的复杂度。分析了基于IPv6协议的SRv6源路由技术,并探讨了SRv6的组网方案,为未来IPv6-only网络发展演进提供参考。     

笼型异步电动机能量回馈制动控制

本文分析了变频器实现异步电动机回馈制动的原理,提出了一种新颖的能量回馈控制方法和能量加馈电路,该方法具有能量回馈效率高,控制简单且不易发生逆变失败等优点,有效地抑制电动机制动时直流侧泵升电压。实验结果验证了该方法的正确性和有效性。     

Miniaturization of monopole antenna using high refractive index metamaterial loading

In this article, miniaturization of the wire monopole antenna with the help of high refractive index (HRI) metamaterial is presented. For the first time, HRI medium is realized by using the array of single ring split ring resonator. By surrounding the wire monopole with the array of SR‐SRRs, the effective wavelength is squeezed in the vicinity of the near field dominance. By the loading of the monopole with such an HRI medium, the size of the antenna is reduced from 29.5 to 16 mm, without any deformation in the current distribution and radiation pattern corresponding to the fundamental resonance. The simulated and measured results are agreed to the same.     

基于改进PatchMatch的自相似性图像超分辨率算法

针对基于自示例几何不变性的超分辨率算法没有充分利用图像的纹理和边缘信息,且采用的PatchMatch图像块匹配算法容易陷入局部极小值的问题,提出了一种基于改进PatchMatch的自相似性超分辨率算法。第一,利用模拟退火算法提高PatchMatch跳出局部极小点的能力;第二,定义边缘相似度因子并将其引入到图像块相似性的评价函数中;第三,受“局部自相似性”统计先验的启发,采用服从高斯概率分布的位置坐标搜索空间进行相似图像块匹配。实验表明,与当前先进算法相比,所提算法在视觉效果和客观评价指标上都有一定的提高。     

结合结构自相似性和卷积网络的单幅图像超分辨率

针对单幅图像超分辨率（SR）复原病态逆问题,在重建过程边缘细节丢失导致的模糊,提出一种结合结构自相似和卷积网络的单幅图像超分辨率算法。首先,通过将尺度分解获得待重构图片样本的自身结构相似性,结合外部数据库样本结合作为训练样本,可以解决样本过于分散的问题;其次,将样本输入卷积神经网络（CNN）进行训练学习,得到单幅图像超分辨率的先验知识;然后,利用非局部约束项自适应选择最优字典重建图像;最后,利用迭代反投影算法对图像超分辨率效果进一步提升。实验结果表明,与双三次插值（Bicubic）方法、K-SVD算法和基于卷积神经网络的图像超分辨率（SRCNN）方法等优秀算法相比,所提算法可以得到边缘更为清晰的超分辨率重建效果。     

拖拉机轮胎全SR胎面的研制

研究了用全ＳＲ制做７．５０－１６（人）拖拉机轮胎胎面。结果表明，胎面胶胶料生胶采用ＳＢＲ１５００／ＳＢＲ１７１２（６０／４０）或ＳＢＲ１５００／ＢＲ／ＳＢＲ１７１２（５０／３０／２０）并用体系均可；炭黑选用炭黑Ｎ３３９最好；软化剂选用芳烃油，用量宜较高；增粘剂选用ＲＸ－８０树脂。全ＳＲ胎面硫化胶的强撕性能、耐磨性能较好，成品轮胎性能符合国家标准，实际里程试验的花纹磨耗量低于现在生产轮胎。     

Authentication of Iberian dry-cured ham: New approaches by polymorphic fingerprint and ultrahigh resolution mass spectrometry

Foods with high added value, such as Iberian dry-cured products, are susceptible to fraud. Many attempts have been made to differentiate the commercial/quality categories of Iberian dry-cured hams by analytical determinations. However, as discrimination by such means is not fully reliable, legislation to prevent fraudulent practice is based on administrative controls and certification. Here, new analytical approaches based on ultrahigh resolution mass spectrometry (UHRMS) and crystallographic techniques applied to the lipid fraction, in combination with chemometrics, are studied. The results of the triacylglycerol profile determined by UHRMS and the fingerprint provided by the thermograms obtained by differential scanning calorimetry offer the promise of analytic discrimination of Iberian dry-cured ham categories. In addition, these determinations, in combination with chemometrics, may prove extremely useful to authenticate many foods containing high to moderate amounts of lipids.     

基于最大后验估计的影像盲超分辨率重建方法

为了减小配准误差对盲超分辨率重建的影响,提出了一种影像配准和盲超分辨率重建联合处理的模型与方法。将配准参数、模糊函数和高分辨率影像建立在统一的最大后验估计模型框架内,并利用循环坐标下降最优化策略对模型进行求解,从而实现了配准参数、模糊函数和高分辨率影像的联合求解。实验结果证明:与传统盲超分辨率重建算法相比,该算法能够有效减少重建影像中的伪痕,在视觉评估上和定量评价上均能得到更好的结果。     

Development of S11306 + SA516Gr70 roll-bonded clad steel plate for pressure vessels

To meet the demand of the pressure vessel industry,Baosteel has developed an S11306 + SA516Gr70 roll-bonded clad steel plate.Comprehensive inspections of the composition,microstructure,and properties are performed to systematically evaluate the steel plate in normalized state and normalized + stress relieved state.The results show the cladding interface of the S11306 + SA516Gr70 roll-bonded clad steel plate has high shear strength,and the base metal has good mechanical properties.The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.     

关于相对SR紧性

定义了L-fuzzy拓扑空间的相对SR紧性,并用网及覆盖等性质对相对SR紧性进行了刻划.讨论了相对SR紧性与SR紧性的关系和相对SR紧性的性质,证明了相对SR紧性关于闭子空间是遗传的以及在强半正则连续映射下是不变的.