基于广义数学期望算法模型的中国企业工资水平宏观调控评价研究

随着我国经济进入加速转型期,市场机制在劳动力资源配置中作用不断加大,我国企业工资水平宏观调控体系机制已成为繁复的工程系统。本文运用广义数学期望算法构建企业工资水平宏观调控评价体系,从经济发展,社会和谐,生活协调三个方面对中国企业工资水平宏观调控体系展开综合评价,分析存在的问题,为优化和完善中国企业工资水平宏观调控机制提供决策依据和政策建议。     

CAN时分信息和优先级晋升实时调度策略

基于事件触发和静态优先级的CAN网络在网络负载较大时,通信的实时性难以保证.为此研究了时分信息和优先级晋升信息实时调度策略,并给出了相关策略在应用中的改进和算法实现.     

工业控制系统中可靠性设计的研究

本文主要阐述了在工业生产控制系统中,可靠性设计中的热设计、电磁防护设计、机械防震设计,提出了可靠性设计中应当注意的问题,以及一些解决问题的方案和办法.热设计中应当主要注意温度,电磁防护设计中应当主要注意屏蔽和接地,机械防震设计中应当主要注意防震.     

利用仿真软件优化电磁场与电磁波教学

针对电磁场与电磁波课程理论公式复杂、相关概念模型抽象的特点,结合长期积累的教学经验,利用软件仿真将电磁场定理模型、分布特性可视化,简化推导计算过程,优化课程结构、节省课时的同时提高了教学效果。     

悬浮液进样-火焰原子吸收光谱法测定茶叶中的微量铬

将茶叶悬浮于琼脂胶体中制成悬浮液 ,直接喷入空气 -乙炔火焰 ,用火焰原子吸收光谱法测定茶叶中的微量铬 ,方法简便、快速、灵敏度和精密度高、测定结果与用灰化法处理样品一致 ,检验表明 ,两种样品前处理方法之间无显著性差异。相对标准偏差为 3.4 %～ 6 .1% ,加标回收率为 95 .7%～ 10 3.8 %。     

Deformation and failure study of surrounding rocks of dynamic pressure roadways in deep mines

In order to understand the change rules of stress-displacement in surrounding rocks of dynamic pressure roadways in deep mines and to obtain a theoretical basis for analyses of roadway stability and designs of support,we established a coupling equation of adjacent rock strength,mining stress and supporting resistance on the basis of an elastic-plastic theory of mechanics.We obtained an analytical solution for stress and displacement distribution of elastic and plastic regions in surrounding rock of dynamic pressure roadway..Based on this theory,we have analyzed the changes in stress-displacement in elastic and plastic regions of surrounding rocks of dynamic pressure roadways in the Haizi Coal Mine.The results show that:1) radial and tangential stress change violently within the first 4 m from the inner surface of a roadway after excavation;radial stress increases while tangential stress decreases within a range of about 6 m from the inner surface of the roadway as a function of q3;2) radial and tangential stress increase with an increase in the mining pressure coefficient k;the increase in the rate of tangential stress is greater than that of radial stress;3) the radial displacement of the inner surface of roadways decreases with an increase in q3,provided that k remains unchanged.     

电磁领域中复超越方程的遗传算法求解方法

将遗传算法与参数跟踪策略有效结合,跟踪过程中进行搜索域压缩与位移操作,形成了一种功能强大的新算法,可成功应用于电磁领域中各种各样复超越方程的高精度求解问题.在算法实现过程中,使用参数跟踪策略有效地缩小了搜索区域,保证了解的单一性,提高了运算速度;使用动态搜索域提高了解的精度;应用三阶差商公式预估新的搜索中心,使运算速度得以进一步提高.应用本文发展的算法详细求解了终端短路法测量材料的复介电常数时得到的复超越方程和部分填充矩形波导的特征方程,计算结果表明该算法能够轻松地解决复超越方程中的多值问题,解集完备性好,算法鲁棒性强.     

生物滴滤器净化苯/甲苯废气的对比

在不同模拟工况下研究生物滴滤器对低浓度苯、甲苯气体的净化性能.以苯和甲苯为目标污染物,采用陶瓷拉西环作为生物滴滤器填料,选用先期筛选驯化的苯、甲苯专性降解菌种对填料进行接种挂膜.结果表明:在气体流量为60～150L/h(对应的苯、甲苯停留时间分别为11.25～28.12s和10.6～26.4s),苯、甲苯入口气体浓度分别为0.61～4.14g/m3,0.43～4.40g/m3的条件下,生物滴滤器对苯、甲苯的最大生化去除负荷分别为333g/(m3.h)和593.4g/(m3.h),甲苯与苯相比更易被微生物降解,镜检表明苯、甲苯系统生物膜中的优势菌种都为短杆菌,密度分别达2.3×109CFU/ml和1.52×1011CFU/ml.     

Electroless nickel plating on the surface of carbon fibers

The electroless nickel plating on the surface of carbon fibers was prepared by pretreating the carbon fibers in order to increase their conductivity,and consequently enhance the EMI shielding effectiveness of the composites.The relationship between the performance of depositing coat and pH value,temperature,reaction time and the way of agitation was studied.Results show that the depositing quality is stable under pH between 4.5 and 5.0,temperature between 75 ℃ and 85 ℃,reaction time for 10 min and air agitation.The uniform and compact nickel layer deposited on carbon fibers was proved by XRD and SEM,and the electrical resistivity of carbon fibers with nickel coating was tested.Results indicate that the electrical resistivity of carbon fibers with electroless nickel plating is decreased by an order of magnitude compared with that of carbon fibers.It means that nickel coating can greatly improve the electromagnetic interference shielding properties of carbon fibers.     

一类广义集值强非线性混合拟变分不等式(英文)

引进一类广义集值强非线性混合拟变分不等式,并且用投影技巧证明了它解的存在性.推广了广义集值强非线性混合变分不等式的许多结论.