摘要：锂离子电池(LIBs)以其高能量密度、低自放电率和长寿命等优势,广泛应用于电子设备、电动汽车及新兴飞行汽车(eVTOL)领域。飞行汽车的电池需要克服高能量密度、高功率密度、快速充电、长循环寿命和高安全性等问题。开发高比能锂离子电池系统需要优化每个电池组件,从电极和电解质到黏结剂系统。黏结剂在LIBs中起到了关键的作用,可以提高电极的机械强度和黏附性,改善电极的导电性和离子传输能力。然而传统的黏结剂,在满足高比能量LIBs需求方面存在诸多局限性,需要开发能够与新型电极材料和电化学材料相兼容的新型功能黏结剂。在本文的综述中,从高能量密度、高功率密度、快速充电、长循环寿命和高安全性的LIBs出发,综述各种前沿的新型黏结剂,提出了下一代高密度锂离子电池黏结剂的设计策略,并概述未来黏结剂的研究方向和面临的挑战。

摘要：英国的设计教育具有比较悠久的历史,注重创造能力,重视基础性和普及性。文章在分析英国中小学设计教育主要特点的基础上,结合我国中小学设计教育的现状和问题,探讨了英国中小学设计教育对我国的启示:从基础教育阶段开始重视艺术创新教育,系统设计课程体系,教学内容注重艺术性与实用性的平衡,建设一支理论与实践并重的教师队伍,借助现代科技手段搭建学习平台。

摘要：中国是全球患有视力残疾人数最多的国家,且每年患病增长成上升趋势。随着城市现代化建设和经济平稳发展,该群体的基本生活需求已然得以保障,但服务于盲人的文化艺术工具较为单一,国内现存长期设立的盲人艺术空间资源比较匮乏。文章借鉴认知心理学研究方法,探讨盲人空间认知理论,运用案例分析法,总结国内外盲人艺术空间典型案例。得出盲人艺术空间设计原则,服务于可移动式盲人艺术空间设计实践。旨在为盲人艺术空间发展提供设计新思路,与该群体实现共享文化艺术。

摘要：为了建立鸽圆环病毒(PiCV)的快速检测方法,依据PiCV Rep基因的保守序列区域设计了荧光定量PCR的引物和探针,并建立了快速检测PiCV的荧光定量PCR方法。结果显示,构建的PiCV荧光定量PCR方法在1.44×10,1~1.44×10^(7)/μL拷贝标准品间具有良好的线性关系,线性相关系数达0.9866;该方法具有良好的敏感性,其检测病毒系列含量下限为14.4拷贝/μL;该方法特异性良好,与鸽新城疫病毒、鸽疱疹病毒、鸽腺病毒等病毒及鸽组织DNA不存在交叉反应;该方法重复性较好,批内重复试验变异系数均介于0.454%~0.473%,批间重复试验变异系数均介于0.367%~0.869%。与传统普通PCR方法相比,所建立的PiCV荧光定量PCR方法敏感性更高,临床样品PiCV检出率更高,两者检测符合率为93.75%。结果表明,所建立的PiCV荧光定量PCR方法为临床检测鸽圆环病毒提供了一种快速、灵敏的检测方法,为PiCV的流行病学调查和主动监测提供了技术支撑。

摘要：以创意为产品内容,利用符号意义创造价值的创意企业,其创新发展模式成为政府和学界关注焦点。以合作创新和嵌入性理论为基础,将产业集群关系嵌入融入创意企业非研发创新对合作创新绩效的影响关系模型,进行验证性因子分析和中介效应结构方程模型分析。结果发现:创意企业技术引进、创意设计及创意学习对合作创新绩效具有正向影响;产业集群商业及政府层面关系在其中发挥中介作用;具体来看,产业集群商业层面关系对非研发创新活动与合作创新关系的中介效应更为显著。研究结论可为指导创意企业依托自身优势更好地开展非研发创新活动,并依托产业集群关系提升不同主体合作质量提供理论参考和实践贡献。

摘要：Impedance matching is important for achieving high-efficiency microwave absorbers. The high conductivity of dielectric loss materials such as pure metals and carbon nanomaterials generally results in poor absorption owing to the low impedance matching between the absorbers and air. Carbon nanostructures are very promising candidates for high-efficiency absorption because of their attractive features including low density, high surface area, and good stability. Herein, a new strategy is proposed to improve the impedance matching of dielectric loss materials using electrospun carbon nanofibers as an example. The carbon nanofibers are coated with specifically designed gradient multilayer nanofilms with gradually increasing electroconductibility synthesized by doping ZnO with different A1203 content （AZO） by atomic layer deposition. The gradient nanofilms are composed of five layers of dielectric films, namely, pure A1203, AZO （5：1, the pulse cycle ratio of ZnO to A1203）, pure ZnO, AZO （10：1）, and AZO （20：1）. The versatile gradient films serve as intermediate layers to tune the impedance matching between air and the carbon nanofiber surfaces. Therefore, the carbon nanofibers coated with gradient films of rationally selected thicknesses exhibit remarkably enhanced microwave absorption performance, and the optimal reflection loss reaches -58.5 dB at 16.2 GHz with a thickness of only 1.8 mm. This work can help further understand the contribution of impedance matching to microwave absorption. Our strategy is general and can be applied to improve the absorption properties of other dielectric loss materials and even for applications in other fields.

摘要：A novel CAD method for tooth profile based on the gearing feature has been proposed in this paper, and this method could be applied to the variable transmission ratio and three-dimension situation. The two pitch curves of the two gears can be generated due to the given transmission ratio. The tooth profile curves are formed in each coordinate system of its pitch curve by the gearing process. Finally, the tooth profile could be extracted and translated into a real dimension by CAD method. It is provided a simply thought for tooth profile design to avoid so much complicated mathematical reasoning.

摘要：第20届伦敦设计周(London design festival)通过展览展示和设计论坛向世界宣传伦敦的创新地位。吸纳成熟的设计师分享他的项目和想法,鼓励年轻设计师通过这个平台来展示他们的创意。伦敦设计周是将伦敦作为全球设计之都来宣传和庆祝的活动,由约翰·索雷尔爵士和本埃·文斯于2003年发起,第20届伦敦设计周于伦敦时间9月17号到25号举行,为期7天。伦敦设计周是在已有的设计活动的基础上.

摘要：本文设计了一种面向小批量生产过程的变抽样区间(variable sample interval,VSI)控制图.根据参数的变化情况,变参数(variable parameter,VP)控制图被分为包括VSI控制图在内的几种不同类型的控制图.在带来成本节省的同时,VP控制图也增加了操作的复杂性;综合考虑成本节省和操作复杂性,VSI控制图被证明是最有效的一种控制图.经济设计控制图的核心是成本的最优化,传统经济图在设计时,没有考虑扰动发生的时刻对成本的影响.本文对过程状态进行重新划分,考虑了扰动发生的不同时刻对过程成本的影响;利用马尔科夫链和贝叶斯理论,构造了抽样区间随过程信息更新而变化的动态控制图.仿真结果表明:相比于已有的VSI控制图,本文设计的控制图更具有成本优势,因此具有更大的实用价值.

摘要：Frequency selective surfaces (FSSs) have been successfully used in constructing microwave absorbers which demonstrate the ability of modifying and improving its absorbing performances. In this paper, microwave absorber based on ferromagnetic nano-films has been proposed and investigated with a structure similar to that of the Salisbury screen except that the resistive sheet is replaced by FSS of square patch array of the nano-film. We have explored the FSS absorber from three aspects: equivalent circuit model, electromagnetic full-wave simulation and the actual sample measurement. By carefully tuning the patch size, the thickness of the dielectric spacer and the specification of the ferromagnetic nano-film, we obtain the optimized performance of broadband microwave absorbing. Due to the light weight of the nano-films, the proposed absorbers can achieve an ultra-low surface density less than 0.25 kg/m2.