摘要：本文提出了一种基于机器学习的高效率集成电路可测性设计技术.该技术以自动收集的数据作为训练集,以决定系数为评价指标,为每类目标参数选择出最佳预测模型,并预测出基于不同配置参数的可测性设计结构所对应的目标参数,最后使用最优配置推断技术,以目标参数差值的加权和作为衡量指标,输出最优的可测性设计配置参数.实验数据表明,针对可测性设计技术中最重要的测试覆盖率参数,平均预测误差仅为0.0756%;根据目标参数差值的加权和的最小值情况,实现高效推断芯片可测性设计的最优配置参数.该技术的预测效果具有高可靠性,能够在保证高测试覆盖率的前提下,有效减少测试成本和面积开销等.

摘要：This paper presents a systematic investigation and demonstration of a K-band circularly polarized liquidcrystal-based phased array(LCPA),including the design,over-the-air(OTA)in-array calibration,and experimental *** LCPA contains 16 phase-shifting radiating channels,each consisting of a circularly polarized stacked patch antenna and a liquid-crystal-based phase shifter(LCPS)based on a loaded differential line *** to its slow-wave properties,the LCPS exhibits a maximum phase-shifting range of more than 360°with a figure of merit of 78.3(°)·dB^(-1)based on a liquid crystal layer with a thickness of only 5μ***,an automatic OTA calibration based on a state ergodic method is proposed,which enables the extraction of the phase-voltage curve of every individual LCPA *** proposed LCPA is manufactured and characterized with a total profile of only 1.76 mm,experimentally demonstrating a scanned circularly polarized beam from-40°to+40°with a measured peak gain of 12.5 dBic and a scanning loss of less than 2.5 *** bandwidth of the LCPA,which satisfies the require-ments of port reflection(|S_(11)|)<-15 dB,an axial ratio(AR)<3 dB,beam squinting<3°,and a gain variation<2.2 dB,spans from 25.5 to 26.0 *** total efficiency is about 34%,which represents a new state of the *** use of the demonstrated low-profile LCPA to support circularly polarized scanning beams,along with the systematic design and calibration methodology,holds potential promise for a variety of millimeter-wave applications.

摘要：In my opinion, paintings of the South Yangtze River are to be tenderly portrayed. They seem to be embodied by neither drawing nor painting, but by a kind of way softly playing out on a bamboo flute.

摘要：Engagement and subjectivity focus on the non-propositional meaning of discourse, and inter-subjectivity is concerned with the relationship between a writer/speaker and his potential readers/addressees. This article first introduces the definitions of engagement, subjectivity and inter-subjectivity, and then attempts to discuss the relationships among them. The analysis shows that subjectivity and inter-subjectivity are closely related and that the process of engagement is an interaction of speaking subject and his/her potential readers and social behavior of inter-subjectivity and social practice as well.

摘要：The application of thermoelectric devices(TEDs)for personalized thermoregulation is attractive for saving energy while balancing the quality of *** that directly attach to human skin remarkably minimized the energy wasted for cooling the entire ***,facing the extreme dynamic geometry change and strain of human skin,conventional TEDs cannot align with the contour of our bodies for the best thermoregulation ***,we designed a kirigami-based wearable TED with excellent water vapor permeability,flexibility,and *** analysis and experimental results reveal that our product can withstand various types of large mechanical deformation without circuit *** stated outcome and proposed facile approach not only reinforce the development of wearable TEDs but also offer an innovative opportunity for different electronics that require high conformability.

摘要：通过时装创意意境的特点、形成及表现的研究,探讨了时装创意意境的作用和表现方式,提出意境 是时装设计创意的最高境界的论点和时装创意如何表现的有效途径。

摘要：在激光制导中,四象限探测器镜头的光学质量决定了目标定位的精度。鉴于此,设计一种非接触式检测四象限探测器镜头光学质量的系统,该系统能够对四象限探测器镜头的光学质量进行在线批量检测。首先将激光光源整形扩束准直为平顶光束,然后通过四象限探测器镜头在磨砂玻璃上显像,最后通过非接触式长工作距离的显微物镜成像在探测器上以探测光斑的形状、位置及均匀度。设计结果表明,此系统能够有效单独对四象限探测器镜头的光学质量进行批量检测,从而提高四象限探测器镜头的品控,有助于提升四象限激光制导探测系统的整体质量。

摘要：To accelerate the development and design of magnesium(Mg)alloys,the structural and mechanical properties of important precipitates in Mg−Zn alloys were studied by experiments and density functional *** nano-indentation tests revealed that the hardness of the precipitates initially increased and then decreased with increasing Zn content,and was significantly higher than that of pure Mg and *** calculation results revealed that the precipitates stability initially increased and then decreased with increasing Zn *** bulk moduli of the precipitates increased,whereas their shear and Young’s moduli initially increased and then decreased with increasing Zn *** decreasing order of ductility for these compounds is MgZn_(2)>Mg21Zn_(2)5>Mg2Zn11>*** surface profiles of the compounds revealed that they are obvious *** the degree of covalency and bond length of covalent bonds initially increased and then decreased with increasing Zn content.

摘要：通过系列时装的基本要素、构思方法、创意的可延伸性等方面的研究,介绍了系列时装设计的方法和有效途径,提出了系列时装创意的可延伸性问题。

摘要：With the increasing concerns to energy shortage and environmental problems in modern society,the development of cheap,clean,and sustainable energy alternatives has been attracting tremendous attention *** various strategies of renewable energy exploration,solar-driven water splitting into its compositional elements H2 and O2 is an ideal approach to convert and store renewable solar energy into chemical *** recent few decades,as an emerging new type of catalysts,polyoxometalates(POMs)have been widely utilized for water splitting due to their versatile synthetic methodology and highly tunable physicochemical and photochemical *** critical review addresses the research advances of light-driven hydrogen evolution using polyoxometalate-based catalysts,including plenary POMs,transition-metal-substituted POMs,POM@MOF composites,and POM-semiconductor hybrids,under UV,near UV and visible light *** addition,the catalytic mechanism for each reaction system has been thoroughly discussed and ***,a comprehensive outlook of this research area is also prospected.