摘要：本文在论述思维设计概念与艺术设计教育现状的基础上,着重阐述思维设计在艺术设计教学中的作用与意义。比较中外艺术设计教育中存在的差异,学习世界一切先进的、具有前瞻性的新观念、新思维和新方法,改革旧的教育范式,树立全新的思维设计创意理念,逐步建立并完善适合我国国情的艺术教育范式。

摘要：为解决视频安全的问题,文章提出了一种基于FPGA的实时图像采集和数据加密系统设计,旨在提高视频数据的安全性和加密效率。系统利用OV5640摄像头采集视频,采用SM4国密算法进行数据加密,通过流水线式设计实现每个时钟周期128位数据的加密和解密,确保了加密效果和实时性要求,通过HDMI接口发送至HDMI显示器进行显示。通过仿真验证了SM4加密模块的正确性,并分析了系统资源利用率。实验结果表明,该系统能够有效实现视频数据的实时加密和解密,确保了视频数据的安全性,同时满足了实时性要求。

摘要：This paper introduces an ant colony routing and wavelength assignment algorithm based on cross-layer design(CL-ACRWA),which can overcome the adverse effects of Doppler wavelength shift on data transmission in optical satellite networks. Firstly, a cross-layer optimization model is built, which considers the Doppler wavelength shift, the transmission delay as well as wavelength-continuity constraint. Then an ant colony algorithm is utilized to solve the cross-layer optimization model, resulting in finding an optimal light path satisfying the above constraints for every connection request. The performance of CL-ACRWA is measured by the communication success probability, the convergence property and the transmission delay. Simulation results show that CL-ACRWA performs well in communication success probability and has good global search ability as well as fast convergence speed. Meanwhile, the transmission delay can meet the basic requirement of real-time transmission of business.

摘要：Lithium metal battery, one of the most promising candidates for high-energy-density storage system, has attracted extensive interest due to its extremely high theoretical specific capacity, low gravimetric density and lowest negative redox potential. However, the formation of lithium dendrites, uncontrolled interfacial reactions, and huge volume change during the cycles of charging and discharging lower the Coulombic efficiency and cause harsh safety issues; they are the major hurdles towards the practical applications of lithium metal batteries. This review presents the recent advances in lithium metal battery and focuses on the functional hybrid electrodes, which are constructed to boost the electrochemical performance of metallic lithium and suppress the growth of lithium dendrites. Their general design rules, fabrication strategies, enhanced performances, and potential applications are summarized and analyzed. An outlook of the challenges and the potentials of lithium metal battery is also provided, which facilitates the future development of lithium metal batteries

摘要：Linxia, a Hui autonomous prefecture in northwest Ningxia Hui Autonomous Region, is known for its distinctive folk singing called “ ower”. This indigenous music form evolved from the combination of folk melodies of ancient Qiang and Han ethnic groups and developed into a mature singing expression with the contribution by many other ethnic minorities. While “ ower” enjoys popularity in northwest China, Linxia attracts more tourists and heritage conservationists alike with the appealing art of brick carving — now included on the first List of National-level Intangible Cultural Heritage.

摘要：In this paper, the S-frames, the front side rail structures of automobile, were investigated for crashworthihess. Various cross-sections including regular polygon, nonconvex polygon and multi-cell with inner stiffener sections were investigated in terms of energy absorption of S-frames. It was determined through extensive numerical simulation that a multi-celI S-frame with double vertical internal stiffeners can absorb more energy than the other configurations. Shape optimization was also carried out to improve energy absorption of the S-frame with a rectangular section. The center composite design of experiment and the sequential response surface method （SRSM） were adopted to construct the approximate design sub-problem, which was then solved by the feasible direction method. An innovative double S- frame was obtained from the optimal result. The optimum configuration of the S-frame was crushed numerically and more plastic hinges as well as shear zones were observed during the crush process. The energy absorption efficiency of the structure with the optimal configuration was improved compared to the initial configuration.

摘要：The metal grille, commonly composed of an amount of diamond holes, has been growingly used as a key structure on stealth aircraft. Electrochemical machining(ECM) promises to be increasingly applied in aircraft manufacturing on the condition that process stability is *** this work, a flow field model was designed to improve the process stability. This model is endowed with a variety of flow channel features, together with vibrating feeding modes. The flow field distribution on the bottom surface of the diamond hole was discussed and evaluated as *** numerical results show that a short arc flow channel could significantly enhance the uniformity of electrolyte velocity distribution and a vibrating feeding of the cathode enables to reduce both fluctuations of the electrolyte velocity and pressure on the bottom surface of the diamond ***, the flow field mutations were eliminated. It is verified from the experimental results that a short arc flow channel, when combined with vibrating feeding, is capable of improving machining localization and process stability markedly. What is more, the side gap on the bottom surface of the diamond hole could also be reduced by the abovementioned approach.

摘要：研究目的:跨导热活动性断层段是隧道震害最为严重的段落之一,但目前其震害作用机理尚不明确。本文建立“热-震-错”耦合计算模型,考虑不同活动性断层岩温、倾角、宽度、围岩级别等因素,探讨跨导热活动性断层段隧道地震动力响应规律;同时,对比单一温度荷载、单一地震荷载、单一错动及“热-震-错”耦合作用下主应力、剪应力的异同,揭示跨导热断层段隧道震害作用机理。研究结论:(1)导热断层的存在改变了地温的热传导路径,原水平分层的初始温度场转变为在导热断层位置呈现向上突起的分布特征,其影响范围为断层两侧3倍洞跨;(2)隧道结构主应力和位移均随断层岩温、倾角、宽度和围岩级别的增大而增大,但断层各参数对隧道结构应力影响远大于对位移影响;最大主应力位于活动性断层上盘D2位置附近,最大位移位于活动性断层上盘S14位置附近;(3)主拉应力受断层参数影响强弱关系为:断层宽度>断层倾角>断层围岩级别>断层岩温;主压应力受断层参数影响强弱关系为:断层围岩级别>断层宽度>断层倾角>断层岩温;位移受断层参数影响强弱关系为:断层宽度>断层围岩级别>断层倾角≈断层岩温;(4)跨导热断层段隧道震害作用机理为断层错动影响最强,地震影响次之,高岩温影响最弱;其隧道衬砌结构破坏以60°共轭剪切破坏为主;(5)本研究成果可为跨导热断层隧道抗减震设计提供一定理论依据。

摘要：为保证反应堆压力容器的传热性能,未对其进行任何表面处理,这导致安装及使用过程中反应堆压力容器表面出现了腐蚀问题。针对该问题,确定了所选用的表面处理技术为超音速火焰喷涂,所用材料为铁基非晶合金。针对所制备的铁基非晶合金涂层进行了孔隙率、厚度、涂层结合强度、热冲击、电化学腐蚀试验、盐雾试验、热导率及拉伸等测试。从表面结构、结合能力、耐蚀性能、对基材性能影响4个方面探究了涂层与表面处理技术在核电领域的适用性,结果表明,涂层与基材结合能力较好,且带涂层的封孔样可在不影响基材传热性能的情况下有效提升基材的耐蚀性能。

摘要：在拍摄远距离目标时,视频序列图像受到大气湍流的影响从而产生畸变和模糊,为对视频序列大气湍流退化图像进行复原,提出了一种幸运成像与生成对抗网络相结合的方法.采用空域幸运成像方法,在有限的视频序列图像中挑选出幸运区域,将其拼接-排序后进行叠加,从而消除大气湍流带来的几何畸变;在此基础上引入DeblurGAN-v2模型,进一步提升图像质量.将高速相机拍摄的真实湍流退化图像作为研究对象,采用所提方法进行实验,并与图像重采样、灰度变换、巴特沃斯高通滤波、MPRNet模型和DeblurGAN模型等方法进行对比,并通过客观评价指标对不同方法的结果进行评估.实验结果表明,所提方法的Brenner梯度函数、Laplacian梯度函数、灰度差分函数(SMD)、熵函数(Entropy)、能量梯度函数(Energy)、PIQE以及Brisque指标相较于其他方法分别提升了194%,58%,84%,7%,55%,74%和163%.从主观效果上看,幸运成像与生成对抗网络相结合的方法能显著地提高图像的视觉质量,并有效地降低图像的模糊和几何畸变程度.