摘要：The fashion design of China starts late and has a weak foundation. Compared to western countries, design works of China have obvious disadvantages. At the same time, the traditional handicraft techniques of China have suffered strong blows of modem technologies with the development of time and their living space have been gradually occupied. The combination of traditional handicraft techniques with modem fashion design has dual significances. On the one hand, it helps infuse new ideas into fashion design. On the other hand, it promotes the development of traditional handicraft techniques in modern times. In this respect, this combination has some positive significances.

摘要：The spin-dependent electronic transport properties of a zigzag zinc oxide(ZnO) nanoribbon are studied by using density functional theory with non-equilibrium Green's functions. We calculate the spin-polarized band structure, projected density of states, Bloch states, and transmission spectrum of the ZnO nanoribbon. It is determined that all Bloch states are located at the edge of the ZnO nanoribbon. The spin-up transmission eigenchannels are contributed from Zn 4s orbital,whereas the spin-down transmission eigenchannels are contributed from Zn 4s and O 2p orbitals. By analyzing the current-voltage curves for the opposite spins of the ZnO nanoribbon device, negative differential resistance(NDR) and spin filter effect are observed. Moreover, by constructing the ZnO nanoribbon modified by the Zn-edge defect, the spin-up current is severely suppressed because of the destruction of the spin-up transmission eigenchannels. However, the spin-down current is preserved, thus resulting in the perfect spin filter effect. Our results indicate that the ZnO nanoribbon modulated by the edge defect is a practical design for a spin filter.

摘要：Post-modernism began to rise in the mid 20th century, and also rapidly played an influence on the cultures of all the countries in the world. Its combination with the design of art in the development process has brought about a new idea for the aesthetic appreciation of people. The combination of postmodernism with fashion design was mainly reflected in sublation. This has exerted a profound influence on the development of fashion design, which is demonstrated in design theme, design idea, and design methods. In this paper, this is introduced from the concept and characteristics of postmodernism, the influence of postmodernism on fashion design, and the reflection of postmodernism in fashion design. It is found that the post-modernism ideological trend plays a certain role in promoting fashion design.

摘要：通过提出一种光栅光调制器的有源矩阵的驱动方式,分析了有源矩阵光栅光调制器的工作机理和关键指标参数。并且分析指出增大有源矩阵的存储电容值,可以减小由电荷重新分布造成存储电压的降低。有源矩阵的晶体管宽长比和存储电容,影响有源矩阵的保持电压特性和开关速度。结合实际的工艺设计包,利用Cadence软件设计了有源矩阵的版图。设计了有源矩阵与光栅光调制器的单片集成的工艺流程。通过仿真和实验验证了理论分析的正确性,且仿真结果与实验结果基本一致,表明:有源矩阵光栅光调制器可以满足分辨率为1920×1080,帧频30Hz,256级灰度的显示要求。

摘要：针对传统人工土壤检测方法存在检测过程复杂、处理周期长、工作效率低等问题,提出了土壤有机质检测自动化前处理平台整体设计框架,基于此构建了土壤有机质检测自动化前处理平台,该平台以均一、稳定的机器操作完成土壤有机质含量的精确检测。平台主要由搬运机械手、温控消解装置、无损转移装置、电气控制系统等构成,同时通过构建组态软件调度系统实现各装置的协同工作,以流水线式作业方式完成土壤有机质自动化前处理。选取标准土壤样品对平台的稳定性和系统适用性进行试验,结果显示,该平台重复测试标准差不大于0.56 g/kg,相对标准偏差不大于2.30%,相对误差不大于2.21%,检测结果符合农业农村部土壤检测指标要求。

摘要：针对钢桥面铺装环氧沥青混凝土使用中出现的问题,分析了现有设计理论和方法的不足,采用改进的密断级配CAVF方法来提高环氧沥青混凝土的抗滑性能;基于断裂力学和能量法原理,提出以冲击韧性作为环氧沥青混凝土疲劳性能的评价指标,采用剩余劲度模量比来反映环氧沥青混凝土的疲劳性能,并通过试验建立起冲击韧性和剩余劲度模量比之间的关系.研究结果表明:采用CAVF方法设计的环氧沥青混凝土的抗滑性能明显改善;冲击韧性和疲劳性能之间有良好的线性相关性,采用冲击韧性能够有效地评价环氧沥青混凝土的疲劳性能.

摘要：基于微机电系统技术的近红外光谱探测系统已成为了近红外光谱仪研究的一个新方向。文章提出了一种基于光栅光调制器的新型近红外光谱探测系统。该系统采用微加工技术制造的光栅光调制器阵列与单点近红外探测器相结合使用的方法进行光谱探测。设计了该光谱探测系统的光学结构,论述了系统光谱探测原理,并使用经表面微加工工艺得到的光栅光调制器器件进行了系统分辨本领、波长准确性、系统稳定性、器件响应频率等特征参数测试实验。结果表明,该探测系统在1 320到1 400 nm波长范围内,分辨本领小于10 nm,波长准确性小于1 nm,系统稳定性小于0.5%,光栅光调制器的响应频率为5kHz。实验结果证明了该近红外光谱探测系统的可行性,为研制基于微机电系统光栅光调制器的微型化近红外光谱仪提供了理论基础及实验指导。

摘要：通过理论计算对用于量子阱红外探测器的GaAs/AlxGa1-xAs量子阱能级结构进行模拟设计 ,将不同生长结构的量子阱材料的光响应谱和光致荧光谱 (PL)与计算结果进行比较 .说明量子阱生长结构与量子阱能级结构的关系 .欲使量子阱红外探测器的响应峰值在 8μm附近 ,则需量子阱结构中阱宽为 4 7nm ,垒中Al含量为 0 2 9.理论计算与测试结果符合得较好 .

摘要：从煤中提取锗、镓等金属已经取得实质性进展,煤逐渐成为多种战略性金属矿产的主要来源,但对煤中金属元素矿产资源尚缺乏系统的矿床学理论支撑.本文在以往煤中金属元素矿产资源研究成果的基础上,结合野外实地调查,总结了煤中锗、镓、锂、稀土资源矿化特征,并以丰富的煤中金属高异常点、区域构造背景及演化、地层沉积环境特征、煤层煤质特征等为依据,将全国煤中锗、镓等金属元素矿产资源划分为7个成矿区带,进而讨论了各成矿区带地质特征,为煤中金属元素矿产资源研究提供地质理论依据.

摘要：为了在保障行车安全的前提下,提高远引掉头交通运行效率,分析了远引掉头措施的适用条件,定义了典型应用环境,提出了借鉴国外相关规范以及结合临近路口配时设计的远引掉头选址规划优化方法,并将规划方法放入典型应用环境中,采用微观仿真软件进行评价。仿真结果表明:两种选址规划方法下的远引掉头措施都优于直接左转,其中规范法使平均延误减少了约3.8s,结合配时设计的方法使平均延误减少了约6.8s。可见,在遵循规范的基础上,对临近路口配时进行优化,既保证了行车安全性,又能显著提高交通运行效率。