熔加色素法搪瓷色釉结构的研究

用ＳＥＭ、ＷＤＳ、ＩＲＲＳ、ＸＰＳ和ＡＳＳ对搪瓷色釉结构进行了研究熔加法的搪瓷色釉具有均匀分布的小尺寸、数量小的气孔。分析了搪瓷色釉的Ｏ１ｓ谱，并分解了成桥氧、非桥氧、及自由氧。熔加法的桥氧浓度远大于磨加法，而熔加法的非桥氧的浓度远低于磨加法，这表明熔加法的搪瓷色釉的结构强度高于磨加法。     

基于熵权-云模型的配电网设备投资策略评价方法研究

配电网设备精准投资是确保电力企业集约化、精益化管理的关键,目前配电网设备投资方案的评价信息往往具有随机性,方案的客观评价和优选难度较大。本文提出基于熵权-云模型的配电网设备投资策略评价方法,利用云模型和熵值法计算评价指标权重,研究经济效益、技术和风险等因素对投资策略的影响,科学评价投资方案,为投资策略制定和优选提供数据支持和实践参考。实践结果表明,该方法能定位配电网设备投资方案中的差异与不足,给出优选决策方案,对促进配电网高质量发展,提升配电网投资决策水平具有一定的参考价值。     

基于云技术的实时气象数据接入及其在宁夏电网中的共享应用

气象数据对电网规划、电网建设、电网检修、负荷预测等业务开展具有重要作用,将存储于气象云的海量气象数据接入电力内网,并在此基础上开展气象数据与电网运行数据的挖掘应用是促进电网企业数字化转型发展的迫切需要,通过研究穿过电力端隔离装置实现气象信息实时接入技术,提出气象数据接入及其在各电力业务系统中共享的技术路径和实现模型,同时给出气象信息、地理信息、电网设备相结合进行关联分析的典型应用案例。应用结果表明,实时气象数据的接入及共享应用能够有效提升电网安全运行水平和精细化管理能力,可提供精准的气象预警。     

基于LS-SVM的陶瓷窑炉温度预测控制

针对陶瓷窑炉大热容量、大滞后、非线性等特点,提出了一种基于最小二乘支持向量机动态矩阵控制方法;首先,采用保证种群多样性微粒群算法优化的最小二乘支持向量机离线建立被控对象模型;然后在系统运行过程中,用动态矩阵预测算法实现对被控系统的预测控制;并以陶瓷窑炉温度为控制对象,与Smith预估控制以及内模控制算法进行了比较;仿真结果证明了所提控制方法具有很好的动、静态性能和强鲁棒性。     

一种结合了纹理和颜色的运动目标跟踪算法

运动目标跟踪是智能视频监控中的关键技术之一,怎样描述运动目标是该技术的一个关键问题。提出一种新的运动目标跟踪算法,结合改进的LBP纹理和色度来描述运动目标,并采用Camshift算法的思想进行目标跟踪。为了降低算法的复杂性,在保证跟踪精确度的前提下,LBP纹理和色度的种类被极大地精简。实验证明提出的方法能有效地跟踪运动目标,在常规的视频分辨率下能达到实时性,比同类的其它算法性能更好。     

Realization and synthesis of reversible functions

Reversible circuits play an important role in quantum computing. This paper studies the realization problem of reversible circuits. For any n-bit reversible function, we present a constructive synthesis algorithm. Given any n-bit reversible function, there are N distinct input patterns different from their corresponding outputs, where N≤2ⁿ, and the other (2ⁿ−N) input patterns will be the same as their outputs. We show that this circuit can be synthesized by at most 2n⋅N ‘(n−1)’-CNOT gates and 4n²⋅N NOT gates. The time and space complexities of the algorithm are Ω(n⋅4ⁿ) and Ω(n⋅2ⁿ), respectively. The computational complexity of our synthesis algorithm is exponentially lower than that of breadth-first search based synthesis algorithms.     

Utilization of waste vanadium-bearing resources in the preparation of rare-earth vanadate catalysts for semi-hydrogenation of α,β-unsaturated aldehydes

Recycling industrial solid waste not only saves resources but also eliminates environmental concerns of toxic threats. Herein, we proposed a new strategy for the utilization of petrochemical-derived carbon black waste, a waste vanadium-bearing resource (V > 30000 ppm (10 ⁻⁶)). Chemical leaching was employed to extract metallic vanadium from the waste and the leachate containing V was used as an alternative raw material for the fabrication of vanadate nanomaterials. Through the screening of various metal cations, it was found that the contaminated Na⁺ during the leaching process showed strong competitive coordination with the vanadium ions. However, by adding foreign Ce³⁺ and Y³⁺ cations, two rare-earth vanadates, viz., flower-like CeVO₄ and spherical YVO₄ nanomaterials, were successfully synthesized. Characterization techniques such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, Fourier-transform infrared, and N₂ physisorption were applied to analyze the physicochemical properties of the waste-derived nanomaterials. Importantly, we found that rare-earth vanadate catalysts exhibited good activities toward the semi-hydrogenation of α,β-unsaturated aldehydes. The conversion of cinnamaldehyde and cinnamic alcohol selectivity were even higher than those of the common CeVO₄ prepared using pure chemicals (67.2% vs. 27.7% and 88.4% vs. 53.5%). Our work provides a valuable new reference for preparing vanadate catalysts by the use of abundant vanadium-bearing waste resources.     

基于 GSTE的验证在 UART模块中的应用研究

实现基于VIS平台的GSTE验证方法,并将非阻塞性赋值算法引入VIS中,完成了对UART 的寄存器传输级模型的FSM的状态转移的验证和对发送的数据是否与输入数据一致的符号化验证。实验表明,该方法能够完成测试用例的全覆盖,说明了该方法在实际例子中所具有的重要意义。     

基于MAS的运输企业虚拟组织的研究

在多Agent系统理论和虚拟企业思想的基础上，对组成运输企业虚拟组织的运输企业Agent进行了设计，并给出了其基本概念和结构模型，指出应建立面向任务的分层异构结构。     

Transient analysis of dielectric step discontinuity of microstrip lines containing a nonlinear layer

Tansient signal propagation characteristics through step discontinuities on microstrip lines with nonlinear substrate are presented. In the proposed model structure, the transient electromagnetic wave propagates from microstrip line with linear substrate to one with nonlinear substrate or vice versa, where two structures are connected to create abrupt discontinuities. The distortions of transient signal through this two abrupt discontinuity structures are numerically simulated by three dimensional FD-TD method. Results show that the distortions of transient signal are evidently influenced by the density of electric field propagating along the microstrip line with nonlinear substrate.