基于互补分裂谐振环的零阶谐振微带带通滤波器的设计

文章介绍了以互补分裂谐振环和一系列沟道组成的LHM为单元的零阶谐振系统（ZOR）,并给出了此系统共振频率和导纳斜率参数的确定方法。描述了由带有J－变案频器的ZOR组成的带通滤波器的设计方法。     

软件定义网络中的DDoS安全

随着现代化信息技术的广泛应用,近年来,我国信息环境呈现了明显的复杂化演变趋势.基于网络信息安全,文章主要介绍了软件定义网络中的DDoS安全保证价值,并简要概述了软件定义网络中的DDoS攻击检测路径,探究基于SDSNM逻辑架构的防御体系、基于OpenFlow攻击缓解方法、基于强化学习的攻击防御系统和基于DPDK的攻击防御...     

Further studies on stability analysis of nonlinear Roesser-type two-dimensional systems

This paper is concerned with further relaxations of the stability analysis of nonlinear Roesser-type two-dimensional （2D） systems in the Takagi-Sugeno fuzzy form. To achieve the goal, a novel slack matrix variable technique, which is homogenous polynomially parameter-dependent on the normalized fuzzy weighting functions with arbitrary degree, is developed and the algebraic properties of the normalized fuzzy weighting functions are collected into a set of augmented matrices. Consequently, more information about the normalized fuzzy weighting functions is involved and the relaxation quality of the stability analysis is significantly improved. Moreover, the obtained result is formulated in the form of linear matrix inequalities, which can be easily solved via standard numerical software. Finally, a numerical example is provided to demonstrate the effectiveness of the proposed result.     

水泵远程控制系统设计与实现

本文为助力构建资源节约型社会，研究现今我国水泵监管以及维护情况，制定全新的水泵远程控制体系，给未来水泵的保护和管理提供参考。     

中小企业信息化系统建设及综合应用

本文介绍了中小企业信息化系统的建设的相关网络技术，简述了信息化系统的综合应用。     

Noether symmetry and conserved quantity for a Hamilton system with time delay

In this paper, the Noether symmetries and the conserved quantities for a Hamilton system with time delay are discussed. Firstly, the variational principles with time delay for the Hamilton system are given, and the Hamilton canonical equations with time delay are established. Secondly, according to the invariance of the function under the infinitesimal transformations of the group, the basic formulas for the variational of the Hamilton action with time delay are discussed,the definitions and the criteria of the Noether symmetric transformations and quasi-symmetric transformations with time delay are obtained, and the relationship between the Noether symmetry and the conserved quantity with time delay is studied. In addition, examples are given to illustrate the application of the results.     

Attainment of Emulsions with Liquid Crystal from Marigold Oil Using the Required HLB Method

Development of new formulations for topical use and cosmetic and pharmaceutical delivery agents has increased the complexity of emulsified systems. Liquid crystals, known since the nineteenth century are the third phase of an emulsion, being responsible for increasing its stability and the solubility of substances poorly soluble in water, or the oily phase, modulating the release of drugs imprisoned in its structure and promoting hydration of the skin surface. In the present work we developed oil/water emulsions, making use of Marigold oil (Calendula officinalis L) and ethoxylated fat alcohols as surfactant. The required HLB value for marigold oil was determined to be 6.0. The surfactants were associated in lipophilic/hydrophilic pairs. The lipophilic surfactants were Ceteth‐2 and Steareth‐2 and the hydrophilic surfactants were Steareth‐20, Ceteareth‐20, Ceteareth‐5, and Ceteth‐10. To identify the liquid crystalline phases, the emulsions were analyzed by polarized light microscopy. The physical stability was evaluated by rheology and zeta potential analysis. All emulsions presented lamellar liquid crystal structures. Results showed that this type of surfactant is able to produce liquid crystal in the system, with slight difference in appearance, influencing the physical stability, according to the methods applied.     

Efficient deep-blue emitters based on triphenylamine-linked benzimidazole derivatives for nondoped fluorescent organic light-emitting diodes

Two triphenylamine-substituted benzimidazole derivatives were synthesized for use as efficient deep-blue emitters in nondoped fluorescent organic light-emitting diodes (FLOLEDs). The molecular design of 4′,4′′-(1H-benzo[d]imidazole-1,2-diyl)bis(N,N-diphenylbiphenyl-4-amine) (T2B) to limit the molecular packing density enabled T2B-based devices to suppress the exciton quenching by a bulky three-dimensional structure. Nondoped FLOLEDs fabricated using T2B as a blue emitter exhibited an external quantum efficiency of 4.67% with color coordinates of (0.15, 0.08).     

企业资产管理系统中通信模型的研究与实现

为了改善企业资产管理(EAM)系统在用户体验、模块间数据传输效率及耦合度等方面的不足,构建了基于Sil-verlight与WCF技术研究与实现EAM系统中的通信模型。利用Silverlight构建客户端提升了用户体验;使用WCF服务封装业务逻辑。客户端Silverlight应用程序通过代理调用WCF服务,提高了数据传输效率,降低了系统模块间的耦合性。