基于LSFD算法的小波模糊神经网络的研究与应用

利用小波变换的多分辨率特性构造小波模糊神经网络模型,并应用在非线性系统的辨识上.在参数学习上,给出了模糊微分与李亚普诺夫稳定相结合的新算法—LSFD算法,并与梯度下降法进行了对比.通过仿真,结果表明小波模糊神经网络模型与模糊神经网络、模糊小波神经网络、小波神经网络和神经网络等模型相比,其性能指标最小,收敛速度更快,更加准确.     

基于地磁场的弹体滚转角几何解算方法研究

弹体姿态的测量是一项关系到弹道修正实现的关键技术,基于地磁场的姿态测量方法以其低成本、无累积误差等优点成为当前的研究热点。通过几何关系人手,从几何解算方法模型的建立到解算原理的推导,建立地磁场局部模型,推导了解算方程,并利用弹体运动过程中的空间几何关系对三角函数解算结果的多值进行了分析。利用实弹的数据进行了验证分析,表明该解算方法简单且能达到预期的测量效果,具有很好的应用前景和重要的军事应用价值。     

高增益轨对轨运算放大器的设计实现

为提高运放性能和增大输入输出信号动态范围,往往采用轨对轨输入输出结构的运放。介绍了一款基于0.35umCMOS工艺设计的恒定跨导轨对轨输入/输出运算放大器,不同于传统的输入结构,该电路采用了一种改进的输入结构和CLASSAB输出结构,两级的折叠共源共栅运放,其输入和输出均能工作在轨对轨的范围内。仿真结果表明该电路在整个共模电平范围内直流增益大于90dB,输出摆幅可达到100mV~vdd-100mV,功耗仅为300uW。电路结构简单紧凑,实现了在整个共模电平范围内的高增益,可广泛应用于精密放大领域。     

A general method of spatio-temporal clustering analysis

Spatio-temporal clustering has been a hot topic in the feld of spatio-temporal data mining and knowledge discovery.It can be employed to uncover and interpret developmental trends of geographic phenomenon in the real world.However,existing spatio-temporal clustering methods seldom consider both spatiotemporal autocorrelations and heterogeneities among spatio-temporal entities,and the coupling in space and time has not been well highlighted.In this paper,a unifed framework for the clustering analysis of spatio-temporal data is proposed,and a novel spatio-temporal clustering algorithm is developed by means of a spatio-temporal statistics methodology and intelligence computation technology.Our method is applied successfully to fnding spatio-temporal cluster in China’s annual temperature database for the period 1951 1992.     

Tripartite entanglement of a spin star model with Dzialoshinski–Moriya interaction

The effect of Dzialoshinski–Moriya (DM) interaction on the tripartite thermal entanglement of a spin-star model with four spins has been analyzed by an entanglement measure of the tripartite negativity. Our results imply that the tripartite thermal entanglement can be established among the three surrounding parties which do not interact with each other but interact with the central party independently. From the results, we find that the strong DM interaction can enhance the tripartite thermal entanglement while the high temperature can shrink it. The effect of the inhomogeneous coupling on the tripartite thermal entanglement is also discussed.     

基于Tate对的无线医疗匿名监护系统

针对目前无线医疗系统对用户隐私以及数据安全保护力度不足的现状,采用椭圆曲线Tate对和AES,设计了新型的安全可信的无线医疗监护系统,实现对病人身份的匿名认证、医疗数据的安全传输等功能。同时,系统提供对跨平台、异构网络的数据传输,并拥有完备的紧急情况处理机制,具有较大的实用价值。系统创新性地将匿名认证引入无线医疗系统,并结合FPGA板卡的强大运算能力,高效而可靠地解决了在无线医疗系统中的信息安全隐患。     

Low level light therapy by Red–Green–Blue LEDs improves healing in an excision model of Sprague–Dawley rats

There are many methods of healing wounds. Among these, light therapy is reported to be beneficial, as beams assist the human body in treating, sterilizing, and regenerating cells. Both Laser and LED irradiation with specific wavelengths induce proliferation of fibroblasts depending on the wound area or wavelength and are effective in wound healing. This study used 8-week-old 250–300 g Male Sprague–Dawley Rats (ILAR Code: NTacSam:SD). The experiment was carried out for the non-irradiation group and the Red–Green–Blue LEDs irradiation groups (n of each group = 5). The experiment animals were relieved for 24 h after wounds had been excised and then the Red–Green–Blue LEDs irradiation groups were given irradiation therapy over 9 days 1 h per day. Immunohistochemical staining was conducted for cytokeratin in order to precisely measure the defect size. Also, Masson’s trichrome staining was conducted for comparison of collagen between the Red–Green–Blue LEDs irradiation groups and the non-irradiation group. Animals treated with Blue LEDs irradiation (p < 0.05), Green LEDs irradiation (p < 0.05), and Red LEDs irradiation (N.S.) healed at a faster rate than non-irradiated group. The LEDs irradiated groups also had more collagen, according to Masson’s trichrome staining for collagen analysis. The Red–Green–Blue LEDs irradiation had a beneficial effect on wound healing and could probably replace low power laser treatment.     

纯碱煅烧过程的智能MPC优化控制策略

针对纯碱生产煅烧过程的时变、大时滞、多变量强耦合等复杂过程特性,以及实际煅烧生产过程中多台煅烧炉并联运行遇到的各种复杂工况,在基于煅烧过程的经济指标MPC优化控制策略的基础上提出了一种针对生产工况变化动态分配湿重碱进料量的智能MPC优化控制策略,并通过MATLAB进行仿真验证.仿真结果表明,智能MPC优化控制策略既能够实现单台煅烧炉出碱温度和出气温度等关键工艺指标的控制和优化,保证了产品质量,降低了蒸汽消耗;又能够在故障诊断和炉况监视的支持下,根据各台煅烧炉的生产工况动态分配进碱量,保证了整个煅烧工序的安全平稳生产,实现了总进碱量的整体优化.最后,将该优化控制策略应用于某纯碱厂轻灰煅烧工序,取得了较好的控制效果.     

循环流化床过程控制云仿真平台设计与应用

为降低循环流化床过程控制系统现场调试的风险,提高其适应性和可靠性,基于云制造的思想,通过设计基于预测的喷水减温对象模型和基于线性回归的脱硫效率对象模型,并进行合理封装,实现对制造资源的虚拟化;在此基础上,使用典型的PLC、DCS、数模转换设备和服务器等硬件设备,建立一种循环流化床脱硫过程控制半实物云仿真实验系统,为制造企业、研究与设计机构等云请求端用户提供脱硫过程控制系统的生产过程模拟、优化操作参数验证、控制算法仿真与性能分析等云制造服务.以某钢铁企业烧结生产的烟气脱硫过程为例,说明了仿真平台的使用方法,并验证其有效性.     

智慧安居解决方案研究

智慧城市建设如火如荼地开展,作为民生类代表应用的智慧安居成为各地智慧城市建设的重点.本文从智慧安居内涵和需求评估入手,重点对智慧安居解决方案、关键成功要素以及实施建议展开讨论,以期给智慧安居实施提供参考借鉴.