摘要：Metasurfaces in the long wave infrared(LWIR)spectrum hold great potential for applications in ther-mal imaging,atmospheric remote sensing,and target identification,among *** this study,we designed and experimentally demonstrated a 4 mm size,all-silicon metasurface metalens with large depth of focus opera-tional across a broadband range from 9µm to 11.5µ*** experimental results confirm effective focusing and imaging capabilities of the metalens in LWIR region,thus paving the way for practical LWIR applications of met-alens technology.

摘要：GPS罗经是新一代船用导航设备,它克服了传统罗经的许多缺点,能全天候、实时地为船舶等提供精确的导航数据.给出了采用自行设计的导航软件和硬件的GPS罗经系统.实验证明,其单点定位的误差可以小于10 mm,航向角和俯仰角的误差均可以小于±1.0°.与现有的同类型的国外产品比较,其具有成本低、精度高和可靠性好等优点.

摘要：介绍了一种基于FPGA的红外地平仪系统的设计方案。该系统以非致冷型红外焦平面作为探测器,以FPGA为主处理器,采用双探头的方式探测地平圆。与传统的红外地平仪相比,这种系统具有小型化和功耗低等特点,适合于在微纳卫星平台上使用。

摘要：对空间目标和空间背景的辐照特性进行分析,建立物理计算模型。在此基础上采用计算机图形学相关的仿真方法,对不同辐照特性天体采用不同仿真手段,建立了辐照特性和仿真灰度之间的对应关系。应用表明,设计的仿真方法能可靠地仿真目标和背景的辐照特性,并且为目标和背景的外型几何特性和运动特性提供了灵活的参数控制方法。设计的仿真技术保留多个可调的参数接口,扩展性强,便于应用推广。

摘要：Cell-derived microvesicles(MVs) are secreted from almost all kinds of mammalian cells into the extracellular space, and play crucial roles in intercellular communication and transporting biomolecules between cells. However, there is a great challenge for visualizing and monitoring of MVs’ bio-behaviors due to the limitations of existing labeling methods. Herein, we report the first paradigm of designer cell-self-implemented labeling of MVs secreted from living mammalian MCF-7 cells in situ using the intracellular-synthesized fluorescent quantum dots(QDs) during the formation of MVs. By elaborately coupling intracellular biochemical reactions and metabolism pathways, the MCF-7 cells can be illuminated brightly by intracellular-biosynthesized fluorescent CdSe QDs. Simultaneously, intracellular-synthesized QDs can be in situ encapsulated by the secreted MVs budding from the plasma membrane of the fluorescing cells to label the MVs with an efficiency of up to 89.9%. The whole labeling process skillfully combines designer precise cell-tuned intricate synthesis of CdSe QDs with mild in-situ labeling via cell-selfimplementation just after feeding the cell with suitable chemicals, which is structure-or function-nondestructive and much more straightforward and milder than those by chemical conjugation or indirect encapsulation with conventional fluorogenic labels.

摘要：Multi-cell processing （MCP） is capable of providing significant performance gain, but this improvement is accompanied by dramatic signaling overhead between cooperative base stations. Therefore, balancing the performance gain and overhead growth is crucial for a practical multi-base cooperation scheme. In this paper, we propose a decentralized algorithm to jointly optimize the power allocation and beamforming vector with the goal of maximizing the system performance under the constraint of limited overhead signal and backhaul link capacity. In particular, combined with calculating the transmission beamforming vector according to the local channel state information, an adaptive power allocation is presented based on the result of sum capacity estimation. Furthermore, by utilizing the concept of cell clustering, the proposed framework can be implemented in a practical cellular system without major modification of network architecture. Simulation results demonstrate that the proposed scheme improves the system performance in terms of the sum capacity and cell-edge capacity.

摘要：为了消除石英音叉陀螺中音叉不对称产生的机械耦合误差及驱动电极与拾取电极间分布电容引入的静电耦合误差,分别采用了质量平衡调节消除机械耦合误差及设计补偿电路消除静电耦合误差的方法.实验结果表明,该方法基本消除了石英音叉陀螺的机械和静电耦合误差,陀螺性能得到明显提高.

摘要：在CO_(2)捕获过程中,吸收剂性能对工艺的生产效率和总成本有重要影响。综述了化学、物理和混合吸收剂的结构、性质及其各自的优缺点,总结了化学吸收剂在CO_(2)捕获中的应用,介绍了实验、性质约束和计算机辅助分子设计(CAMD)等用于快速筛选和设计吸收剂的不同方法,指出利用CAMD方法可系统地评价大量分子和组分,极大优化筛选和设计的过程,提高实验效率。

摘要：针对直接甲醇燃料电池(direct methanol fuel cell,DMFE)对高效阳极催化剂的需求,设计研发Ca-Mg-Pd-M(M=Cu,Ag)非晶合金前躯体体系,并采用去合金化制备系带-孔道双连续结构的纳米多孔Pd-Cu/Pd-Ag合金。通过设计前驱体合金比例可调节多孔结构的元素比例和尺寸,Pd元素可与Cu,Ag元素形成连续固溶体,在去合金化过程中可以降低Cu,Ag元素的扩散,进而细化纳米多孔的系带尺寸(由100 nm减小到10 nm)。相较于纳米多孔Pd,纳米多孔Pd-Cu/Pd-Ag合金表现出更优异的甲醇催化活性(催化电流强度:45 mA/mg)和抗毒化能力(J f/J b值为1.56),还具有低成本的优点,在直接甲醇燃料电池阳极催化剂方面有着良好的应用前景。

摘要：运用动态规划的思想设计了一个启发式算法来识别关键链和非关键链。采用此算法对标准问题库PSPLIB中的问题J301_***进行实例求解,识别出来的两条关键链的长度比文献[11,14]中算法求得的长度缩短了6个单位时间。