关于TD-LTE网络物理层峰值吞吐率的分析

本文主要着重探讨了TD-LTE网络小区和和终端物理层理论上的峰值吞吐率,分析了上下行不同时隙配比下是否与TD-SCDMA共存系统等不同情况的区别,最后给出相应的理论物理层峰值吞吐率,可供TD-LTE网络规划参考。     

3-甲基-4-对甲苯基-5-(2-吡啶基)-1，2，4-三唑-铜(Ⅱ)配合物

A copper(Ⅱ) complex [CuL(H₂O)(Sal)]·0.5H₂O was obtained by the reaction of copper(Ⅱ) salicylate with 3-methyl-4-(4-methylphenyl)-5-(2-pyridyl)-1,2,4-triazole (L) in ethanol-water solution at room temperature. The crystal belongs to triclinic system with space group P1, and a=0.913 6(4) nm, b=1.122 2(5) nm, c=1.263 3(7) nm, α=67.10(2)°, β=76.31(3)°, γ=68.17(2)°, V= 1.101(1) nm³, Z=2. The final refinement gave R₁=0.039 8 and wR₂=0.106 0 for 3 453 reflections with I>2σ(I). This complex is a good purple fluorescent material in solid state at room temperat-ure. CCDC: 685713.     

有限A bel群的完全同构

本文得到有限循环群的完全同构基数的一个计算公式 ,并给出有限 Abel群的一个同态为完全同构的一个充要条件 .     

具有强绿色荧光发射效应的2,2''-二硝基4,4''-联苯酸铀(Ⅵ)配聚物

A very complex 3D Uranium(Ⅵ) metal-organic framework was obtained by the hydrothermal treatment tubes. The crystal belongs to monoclinic system with space group P21/c, and a=0.545 90(3) nm, b=3.676 01 (18) nm,c=2.659 81(13) nm,β=91.4060(10)°, V=5.335 9(5) nm3, Z=4. CCDC: 659615.     

Synthesis and Crystal Structure of a Puckered Rhombus Grid-like Coordination Polymer with Bridging Ligand Containing Sulfanyl Linker

Introduction The design and construction of metal-organic frameworks (MOFs), obtained by metal-directed self-assembly from labile metal centers and multidentate bridging ligands, is a rapidly developing area of su-pramolecular chemistry.1-3 Besides the aesthetic struc-tural and fascinating functional motifs, they are of in-terest both for understanding the mechanisms of the assembly process and for the host-guest chemistry asso-ciated with their large central cavities.4-13 It has been documen…     

5G专网技术在电网配网差动保护中的应用研究

电网传输网络最后5公里的配网采用电流差动保护技术,其优越的速动性、灵敏性和选择性而被广泛应用,现有的应用方法多采用专用光纤通道,成本高建设周期长难以满足日常运营需求。5G在R15定义了MEC和网络切片的专网技术,具有低时延和大带宽的特性,在R16定义了5G LAN和TSN两种专网技术,进一步提高专网的可靠性和稳定性。5G配电网电流差动保护方案基于5G专网技术实现差动保护装置之间的采样数据传输能够根据配电网拓扑变化动态调整差动保护配置,降低配电网改造成本及维护成本。着重对uRLLC专用切片技术在南方电网配网电流差动保护中的应用情况做了研究,得出了切片定制和测试、CPE授时、端到端时延测试的相关结论。     

发光的二维Cu(Ⅰ)分子箱[CuCl(DBBD)2]n

Hydrothermal treatment of CuCl and atropisomeric ligand racemic-diethyl (R,S)-4,4′-biquinoline-6,6′-diethyl-3,3′-dicarboxylate (DBBD) (1) in the presence of H₂O and C₂H₅OH over 4 days at 104～109 ℃ yielded colorless block crystals [CuCl(DBBD)₂]_n (2). The compound exhibits strong red fluorescent emission with a wavelength of 650 nm. The crystal of [CuCl(DBBD)₂]_n belongs to monoclinic system with space group C2/c, and a=1.656 58(17) nm, b=2.025 0(2) nm, c=1.548 73(16) nm, β=107.879(2)°, V=4.944 4(9) nm³, D_c=1.417 g·cm^-3, Z=8. CCDC: 292932.     

DBBD及其Cu(I)配位聚合物[CuI(DBBD)2]n的合成

In this article we report the synthesis of (R,S)-4,4′-biquinoline-6,6′-dimethyl-3,3′-dicarboxylate (DBBD) (1) and the formation of copper(I) coordination polymer [CuI(DBBD)₂]_n (2) by inducing a bidentate organic ligand (DBBD). The crystal 1 belongs to monoclinic system with space group P2₁, and a=0.881 30(19) nm, b=1.966 0(6) nm, c=1.478 1(4) nm, β=119.429(12)°, V=2.230 5(10) nm³, D_c=1.276 g·cm^-3. The crystal 2 belongs to orthogonal system with space group Fmm2, and a=2.044 41(17) nm, b=1.543 06(13) nm, c=1.652 45(13) nm, V=5.212 9(7) nm³, D_c=1.669 g·cm^-3, Z=8. CCDC: 292931, 1; 292934, 2.     

基于SVM逆系统的五相永磁容错电机解耦控制

设计了一种应用于五相永磁容错电机的解耦控制器,实现了调速系统的线性化及解耦。该智能控制器采用支持向量机(SVM)逆系统理论结合构成SVM逆控制器,由SVM来逼近原系统的逆系统,将原系统解耦成两个伪线性子系统,通过两个PI控制器调节子系统的控制性能。SVM逆控制器集合了SVM方法的高精度跟踪与逆系统解耦的优点。仿真和实验结果表明,在FTPM电机运行时,当参数发生变化,SVM逆系统控制器依然能表现出很好的稳定性与精确的响应性。