教师保险产品的定价

寿险产品的定价是保险业中的经典问题,费率的厘定则是寿险产品定价中的核心问题。通过乘以经验调整因子对生命表作相关的调整,采用精算方法对60岁到期这一类特殊教师保险产品进行了定价,得到各年龄教师的趸缴纯保费及年缴均衡纯保费。全面考虑实际情况中影响教师寿命的两类主要因素——吸烟和酗酒,对所得的费率进行适当的调整,所得结果也更利于实际操作。     

A Template Roure to Prepare Nanowire Arrays of Amorphous Cabon Nanotube-coated Single Crystal Tin Dioxide

1 Results Tin oxide is an important n-type semiconductor of wide band due to its numerous potential applications in resistors, gas sensors, dye-based solar cells, and transparent conducting coatings for glasses and electrodes. It is also prospective anode material for high-energy density lithium ion batteries[1]. So far much work has been conducted on one-dimensional (1-D) metal oxides because their large ratio of surface/volume and their congruence of the carrier screening length with their lateral dim...     

Photonic crystal vertical-cavity surface-emitting laser based on GaAs material

A photonic crystal vertical-cavity-surface-emitting laser (PC-VCSEL) with a wavelength of about 850 nm was realized. The direct-current electrically-driven PC-VCSELs with a minimum threshold current of 2 mA and a maximum threshold current of 13.5 mA were obtained. We fabricated a series of PC-VCSEL chips whose lattice constants are in the range from 0.5 to 3 μm with different filling factors, and found that the laser characterization depends on the lattice constant, the filling factor, the size of cavity, etc.     

Detection of low enersy solar neutrinos by a two-phase cryosenic e-bubble detector

A new two-phase cryogenic neutrino detector using electron bubble （e-bubble） specifically in liquid helium is proposed and being developed for real time, high rate measurements of low-energy p-p reac- tion neutrinos from the sun. The e-bubble detector is a time projection chamber-like （TPC） tracking detector. The task of such a neutrino detector is to detect the ionization of the elastically scattered target electrons by incident neutrinos, and then to characterize their energy and direction and to dis- tinguish them from radioactive backgrounds. The ionization signals are expected to be small and hence undergo avalanche amplification in the saturated vapor above the liquid phase by gas electron multi- pliers （GEMs） at high gain. Higher granularity and intrinsically suppressed ion feedback give a good spatial resolution and are the major advantages of this technology. It should be possible to construct such a detector to track charged particles down to 100--200 keV in a massive liquid helium target with fractional millimeter spatial resolution in three-dimensional space, using the GEM-based TPC with a high-resolution CCD camera, for both the electronic and light readout.     

单双层球面网壳结构的静力特性及其稳定性能分析

结合一工程实例，将单层球面网壳结构与双层抽空四角锥球面壳结构结合起来，设计了一种新型的空间结构型式，即单双层抽空四角锥球面壳结构，简要介绍了该网壳的设计过程，并采用全铰接模型分析了单双层网壳结构的承载力，应用Lanczos法求解了网壳结构的特征值及特征向量，并运用柱面弧长法跟踪了结构的非线性平衡路径，同时考虑了初始几何缺陷的影响，对比分析了两种不同支座条件的线性及非线性屈曲特征，并得出一些结论，供工程界参考。     

防火门单片机控制系统设计

对利用AVR单片机AT90S1200设计防火门控制系统进行了讨论，所设计的系统具有一定的智能，并达到了完全实用的程度。     

教育评价中的单级模糊综合评判及功能实现

应用模糊数学处理复杂的教育信息不仅可行，而且必要。为此利用教育评价的理论和模糊综合评判的原理，结合实例，探讨了单级模糊综合评判的方法在教育评价中的应用，介绍了教育信息处理的技术与方法，设计了相应的数据结构和算法，给出了教育评价系统的软件实现技术，并对结果进行了分析。     

单片机在超声波恒功率控制中的应用

介绍一种单片计算机控制的恒功率控制超声波焊接加工电路。在原恒压输出电路基础上，增加单片计算机控制的恒轼率控制电路，实时检测输出功率，调节控制压控放大器增益，控制电路的输出电压，实现输出超声波功率保持恒定。消除由于焊接点表面阻抗不稳定对焊接质量的影响。采用偏差算法，控制响应快速，效果良好。     

发酵生产蛋白饲料中培养基原料配比的实验研究

实验以玉米秸秆粉和麦麸为主要原料，通过康氏木霉和酿酒酵母两株菌混合发酵生产了富含单细胞蛋白质的饲料，对加水比、物料比、氮源添加量等因素进行研究，通过正交实验方法，确定最佳培养基配方。结果表明，玉米秸秆粉与麸皮1：1混合，3．5％（NH4）2SO4，原料：水为1：4pH5．5，接种量10％，30℃，培养周期5d。发酵终产物粗蛋白含量20．05％，比发酵前提高了60．4％；粗纤维含量为11．01％，降低了61．96％。     

螺旋桩机同步跟踪自动控制系统的研制

在分析螺旋桩机施工原理的基础上，指出了加压机构与动力头旋转速度的同步是保证成桩质量的关键问题，对螺旋桩机同步跟踪自动控制系统进行了研究，阐述了系统的构成和工作原理，提出了同步跟踪的算法，并研制出单片机同步跟踪自动控制系统，该系统有效解决了螺旋桩机加压机构进尺位移与动力头电机旋转速度间的同步问题，运行稳定可靠，极大地提高了螺旋桩的承载能力，节约混凝土的用量。