摘要：铝硫二次电池是一种具有高能量密度、廉价原材料、有前途的替代储能装置.然而,铝硫电池面临着一些障碍,尤其是穿梭效应.本工作设计了一种硫分散均匀的无粘结剂S@Ti_(3)C_(2)T_(x)三明治结构薄膜.二维层状材料Ti_(3)C_(2)T_(x)不仅具有粘结剂和导电剂的功能,而且是一种很有前途的硫锚定载体.S@Ti_(3)C_(2)T_(x)膜在300 mA g^(−1)时显示出初始容量为489 mA h g^(−1),并在280圈稳定循环后保持为415 mA h g^(−1),平均库仑效率约为95%.该薄膜的容量和稳定性均高于采用浆料涂覆法制备的S+Ti_(3)C_(2)T_(x)正极(初始容量为317 mA h g^(−1),循环160圈后衰减为222 mA h g^(−1)).S@Ti_(3)C_(2)T_(x)膜在铝硫电池中的容量主要来源于S^(2−)和S之间的可逆氧化还原反应.这种新颖的二维材料与可控的电极结构设计相结合,为铝硫电池的发展铺平了道路.

摘要：A modified extended binary Euclid's algorithm which is more regularly iterative for computing an inversion in GF(2m) is presented. Based on above modified algorithm, a serial-in serial-out architecture is proposed. It has area complexity of O(m), latency of 5m-2, and throughput of 1/m. Compared with other serial systolic architectures, the proposed one has the smallest area complexity, shorter latency. It is highly regular, modular, and thus well suited for high-speed VLSI design.

摘要：Similarity measure design for discrete data group was proposed. Similarity measure design for continuous membership function was also carried out. Proposed similarity measures were designed based on fuzzy number and distance measure, and were proved. To calculate the degree of similarity of discrete data, relative degree between data and total distribution was obtained. Discrete data similarity measure was completed with combination of mentioned relative degrees. Power interconnected system with multi characteristics was considered to apply discrete similarity measure. Naturally, similarity measure was extended to multi-dimensional similarity measure case, and applied to bus clustering problem.

摘要：光束缚在科学和技术上的重要价值使之成为了一个学界不断探索的研究领域.光束缚可利用材料或者结构反射镜实现,也可利用拓扑保护连续区束缚态构成的无反射镜结构实现.将面内反射边界与连续区束缚态结合,即可实现一类具有极高品质因子、极小模式体积的新型片上光学微腔.具体来说,利用光子晶体异质结构引入的光子禁带在水平方向将光约束在有限区域内,同时调控动量空间中连续区束缚态构成的拓扑星座实现垂直方向上的光约束,最终可实现全三维空间中的光束缚.本文在实验中观测到了高达1.09×10^(6)的品质因子,其模式体积仅为17.74(λ_(0)/n)^(3).多个样品表征结果的统计分析表明,该设计具有优秀的工艺鲁棒性.本研究为在微小尺度上实现光束缚提供了一种新的设计范式,在光子集成、非线性光学以及量子计算等领域具有可期的应用前景.

摘要：Digital controlled oscillators（DCOs） are the core of all digital phase locked loop（ADPLL） circuits. Here,DCO structures with reduced hardware and power consumption having full digital control have been proposed. Three different DCO architectures have been proposed based on ring based ***,four and five bit controlled DCO with NMOS,PMOS and NMOS PMOS transistor switching networks are presented.A three-transistor XNOR gate has been used as the inverter which is used as the delay *** has been controlled digitally with a switch network of NMOS and PMOS *** three bit DCO with one NMOS network shows frequency variations of 1.6141-1.8790 GHz with power consumption variations 251.9224-276.8591μW. The four bit DCO with one NMOS network shows frequency variation of 1.6229-1.8868 GHz with varying power consumption of 251.9225-278.0740μW.A six bit DCO with one NMOS switching network gave an output frequency of 1.7237-1.8962 GHz with power consumption of 251.928-278.998μ*** frequency and power consumption results for 4 6 bit DCO circuits with one PMOS and NMOS PMOS switching network have also been *** phase noise parameter with an offset frequency of 1 MHz has also been reported for the proposed *** with earlier reported circuits have been made and the present approach shows advantages over previous circuits.

摘要：An adaptive output feedback control was proposed to deal with a class of nonholonomic systems in chained form with strong nonlinear disturbances and drift terms. The objective was to design adaptive nonlinear output feedback laws such that the closed-loop systems were globally asymptotically stable, while the estimated parameters remained bounded. The proposed systematic strategy combined input-state-scaling with backstepping technique. The adaptive output feedback controller was designed for a general case of uncertain chained system. Furthermore, one special case was considered. Simulation results demonstrate the effectiveness of the proposed controllers.

摘要：硬质金属电极与柔软人体皮肤之间的界面失效会导致脑机接口器件的信号漂移和性能不稳定,影响脑电信号的精确采集.本研究设计并制备了一种聚多巴胺甲基丙烯酰胺-聚丙烯酰胺(PDMA-PAAM)水凝胶.将多巴胺引入到聚丙烯酰胺水凝胶中,通过多巴胺的氨基与邻苯二酚基团在有机-无机界面上建立共价和非共价相互作用提高了界面粘结力.金属电极与人体皮肤之间形成了强附着和有效模量过渡体系,PDMA-PAAM水凝胶与猪皮之间的剥离力达到22 N m^(-1).此外,通过添加氯化钠和甘油,PDMA-PAAM水凝胶具有稳定的电导率和室温下60天以上的长期使用寿命.将本研究制备的PDMA-PAAM水凝胶集成在柔性金电极上用于脑机接口,采集到的脑电信号强度和波形与同类商用产品基本一致,且PDMA-PAAM水凝胶柔性电极具有更稳定的界面.

摘要：新半小的 waterplane 区域双胞胎壳(一行) 的水动力学分析对象小、中等的尺寸旅客渡船那样的各种各样的应用合适被介绍。这可以是源于合并二古典形状的一种吸引人的转线路配置：常规一行和快长筏。最后的壳设计与最大的横梁展出像楔的吃水线形状在严厉；壳与一个很狭窄的入口角度结束，有典型地代表一行容器的一个突出的球状的弓，并且展示完整对严厉安排 waterjet 推进器。我们与如此的建筑群执行对壳的水动力学表演的一个初步的评价的分析目的在常规头波浪在平静的水和经得起海上风浪的能力里以壳的抵抗塑造两个并且把表演与常规一行的作比较。分析用 preliminarily 在一个常规一行容器上被验证的一个边界元素方法被执行。

摘要：In order to realize safe and accurate homing of parafoil system,a multiphase homing trajectory planning scheme is proposed according to the maneuverability and basic flight characteristics of the *** this scenario,on the basis of geometric relationship of each phase trajectory,the problem of trajectory planning is transformed to parameter optimizing,and then auxiliary population-based quantum differential evolution algorithm(AP-QDEA)is applied as a tool to optimize the objective function,and the design parameters of the whole homing trajectory are *** proposed AP-QDEA combines the strengths of differential evolution algorithm(DEA)and quantum evolution algorithm(QEA),and the notion of auxiliary population is introduced into the proposed algorithm to improve the searching precision and *** simulation results show that the proposed AP-QDEA is proven its superior in both effectiveness and efficiency by solving a set of benchmark problems,and the multiphase homing scheme can fulfill the requirement of fixed-points and upwind landing in the process of homing which is simple in control and facile in practice as well.

摘要：The suppression of combustion instabilities using the extremum seeking algorithm(ESA) is analyzed.A function model of the pressure oscillation and the mean fuel–air ratio in the combustion chamber is derived and implies an extremum relation between the oscillation amplitude of the pressure and the mean fuel–air ***, the control system of combustion instabilities can be considered as an extremum seeking control system(ESCS). All traditional ESCSs employ a separate design method, which divides the design of the ESA from the controller design. It is thus difficult for traditional ESCSs to achieve optimal performance of the control system. To solve this problem, an integrated extremum seeking control method for ESCSs is proposed. Using this integrated control, the minimal oscillation amplitude of the pressure is realized by adaptively seeking the optimal mean fuel–air ratio. Hence, this design method can effectively suppress combustion instabilities in aeroengines. By comparing simulation results, the effectiveness of the proposed method is validated.