终端计算机准入系统在泰安供电公司的实施

随着公司计算机接入数量的迅速增长,终端安全管理的难度和重要性不断提高。为了统一管理、提高运维效率,2009年国家电网公司统推了北信源桌面终端标准化管理系统(简称桌面系统)。由于桌面系统的接入控制功能较弱,致使桌面系统客户端安装率不高,影响了安全策略的实施。文章从公司终端安全管理需求入手,调研主流的准入控制技术,结合企业网络现状,进行技术选型,制定组网方案,逐步部署实施终端计算机准入系统,实现了终端的身份认证、安全状态检查、不合规自动隔离修复。准入系统与桌面系统的成功结合,有效促进了内网的合规建设,提高了桌面系统使用效率,确保了各项信息指标的先进性。     

感官分析方法在和田玉颜色分类中的应用

和田玉通常是以颜色为依据进行分类的,但当和田玉颜色相近且渐变,即颜色只存在深浅、色调细微变化时,对其进行准确分类就很难了。而类别的错位划分会影响其价值及科学研究等。为解决这个难题,结合市场需求,运用感官分析方法,结合数理统计等原理确定出白玉青玉系列样品中白玉、青白玉下限标准样品。由此也表明在和田玉国家标准样品的研制中,感官分析技术数据可靠,方法可行。     

Towards paired and coupled electrode reactions for clean organic microreactor electrosyntheses

Electrosynthesis offers a powerful tool for the formation of anion and cation radical intermediates and for driving clean synthetic reactions without the need for additional chemical reagents. Recent advances in microfluidic reactor technologies triggered an opportunity for new microflow electrolysis reactions to be developed for novel and clean electrosynthetic processes. Naturally, two electrodes, anode and cathode, are required in all electrochemical processes and combining the two electrode processes into one “paired” reaction allows waste to be minimised. By decreasing the inter-electrode gap “paired” reactions may be further “coupled” by overlapping diffusion layers. The concept of “coupling” electrode processes is new and in some cases coupled processes in micro-flow cells are possible even in the absence of intentionally added electrolyte. The charged intermediates in the inter-electrode gap act as electrolyte and processes become “self-supported”. Hardly any examples of “coupled” paired electrochemical processes are known to date and both “paired” and “coupled” processes are reviewed here. Coupled electrode processes remain a challenge. In future “pairing” and “coupling” electrode processes into more complex reaction sequences will be the key to novel and clean flow-through microreactor processes and to novel chemistry.     

加快发展我省化工支柱产业的思考

本文根据国内的形势和我省资源情况以及化学工业发展现状，在宏观角度上提出了对我省未来化学工业发展的预想和建议，供省内同行参考。     

Study on vehicle active suspension system control method based on homogeneous domination approach

In an active suspension system, there is an actuator mounted between the sprung mass and the unsprung mass to change the stiffness and damp of the suspension for ride comfort and handling stability. Because the active suspension control system is an under‐actuated system, the control problem of the active suspension is challenging but interesting. In order to solve this issue, a novel vehicle active suspension control method based on homogeneous domination approach is proposed in this paper. Firstly, a groundhook control model is constructed according to the general active suspension dynamic model. In order to deal with the additional terms of the control system which are harmful for convergence, a homogeneous domination approach is used to construct an active suspension homogeneous controller (ASHC). A useful technical theorem is proposed in the stability analysis to show that the proposed ASHC can guarantee the states of the active suspension system being stabilized. Compared with the SMC method and without any controller (passive suspension), the simulation results indicate that the proposed ASHC is effective.     

发展先进文化抵御文化霸权

经济全球化是随着社会生产力发展而产生的一种客观趋势 ,经济全球化带来的文化全球化所引起的“文化扩张”与“文化侵略”应当引起我们的高度警觉。本文正是试图从这一角度对文化霸权作一剖析     

运用EXCEL函数进行区组试验设计

区组设计是科学研究和加工工艺中经常用到的试验设计方法,本文通过对区组设计中的配对设计和完全区组设计实质的分析,提出了运用EXCEL进行配对设计和完全区组设计的方法。结果认为灵活利用Excel的随机函数如RAND、RANDOMBE-TWEEN等和排序按钮可以快速进行区组试验设计。     

Constrained Optimization Algorithm Based on Double Populations

In order to improve the distribution and convergence of constrained optimization algorithms, this paper proposes a constrained optimization algorithm based on double populations. Firstly the feasible solutions and infeasible solutions are stored separately through two populations, which can avoid direct comparison between them. The usage of efficient information carried by the infeasible solutions will enlarge exploitation scope and strength diversity of populations. At the same time, adopting the presented concept of constraints domination to update the infeasible set may keep good variety of population and give consideration to convergence. Also the improved mutation operation is employed to further raise the diversity and convergence. The suggested algorithm is compared with 3 state-of-the-art constrained optimization algorithms on standard test problems g₀₁-g₁₃. Simulation results show that the presented algorithm has certain advantages than other algorithms because it can ensure good convergence accuracy while it has good robustness.