一个包含Smarandache函数及第二类伪Smarandache函数的方程

主要研究方程Z2（n）＋1=S（n）的可解性,利用初等方法以及Smarandache函数的性质,证明了该方程有无穷多个正整数解,并获得了所有正整数解的具体表现形式．     

一类完全非线性函数的原像分布

利用代数数论的有关知识与理论,研究了从3l阶交换群到3阶交换群上完全非线性函数的原像分布特征方程,通过讨论其等价方程x2+xy+Y2=l的整数解问题,给出了该类完全非线性函数存在的必要条件及其原像分布特征的计数.进一步给出了求该类完全非线性函数所有可能原像分布特征的一个算法.     

人机交互式档案管理软件系统让“无纸化”办公不再只是设想

目前,在系统档案管理领域中,管理软件多为C／S结构,能够对已形成档案的目录级文件进行简要的信息录入,对文书档案的归档、数据库管理有一定意义。但是,C／S结构的管理软件有很多弊端,如,它们一般无法形成网络化管理。以往管理软件由于设计结构上的局限,使得这些软件只能是单机版软件,即只能安装于某一台具体的计算机,无法实现联网。     

无锡市高职院校体育教师信息素养状况的调查与分析

采用问卷调查法、访谈法等研究方法,对无锡市高职院校体育教师信息素养的现状进行了调查分析,指出当前体育教师信息素养方面存在的问题,并针对无锡市高职院校的情况,提出了培养体育教师信息素养的建设性对策。     

Calculation of infrared properties of low emissivity coatings containing metallic flake pigments

The infrared emissivity of low emissivity coating can be significantly reduced by adding high content concentrations of parallel distributed metallic flake pigment. However, the infrared emissivity is very difficult to calculate by the existing theory models, such as the light scattering theory and traditional Kubelka-Munk radiative transfer model, because of shape and distribution anisotropy of flake pigments. Thus, the low emissivity coating is assumed to be the superposition structure of homogeneous layers and metallic flakes are approximately uniform and parallel arrangement in each layer. Based on geometric optics theory and Kubelka＇s layer model, considering multiple reflection, transmission and absorption of infrared radiation among different layers, the theoretical model is established to calculate the coating emissivity. The facts of binder, pigment concentration and thickness are also systematic discussed. The result shows that the law of influence on infrared emissivity can be correctly simulated by this theoretical model. Transparent binder, high volume concentration of thin flake pigment can facilitate to reduce infrared emissivity. Moreover, this model offers the possibility of predicting the infrared optical properties of coatings by their optical constants.     

Mssbauer studies on the shape effect of Fe_(84.94)Si_(9.68)Al_(5.38) particles on their microwave permeability

Ball milling for long time (such as 10, 20, and 30 h) can transform Fe 84.94 Si 9.68 Al 5.38 alloy powders with irregular shapes into flakes. X-ray diffraction (XRD) and Mssbauer measurements have proven that the unmilled particles and the flakes obtained by milling for 10 h have the same D0 3 -type superlattice structure. The flakes obtained by milling for 20 h and 30 h have the same disorder α-Fe(Si, Al) structure. There are more than 6 absorption peaks in the transmission Mssbauer spectra (TMSs) for the particles with D0 3 -type superlattice structure, which can be fitted with 5 sextets representing 5 different Fe-site environments. However, only 6 TMS absorption peaks have been found for particles with a disorder α-Fe(Si, Al) structure, which can be fitted with the distributions of Mssbauer parameters (Bhf, isomer shift). The TMS results show that the flaky particles have a stronger tendency to possess the planar magnetic anisotropy. As the result, the flakes have larger microwave permeability values than particles with irregular shapes. The conversion electron Mssbauer spectra (CEMSs) also show the significantly different Fe-sites environments between the alloy surface and the inside.     

Lu~(3+)掺杂对CdO陶瓷电、热输运性能的影响

利用传统固相烧结法制备了Cd1-xLuxO(x=0%,0.1%,0.5%,0.75%,1.0%,1.25%,1.5%,2%)陶瓷样品并研究了Lu3+掺杂对其电、热输运性能的影响.随着Lu3+掺杂浓度的增大,Cd1-xLuxO样品的室温载流子浓度持续增大而其迁移率表现出先增大后减小的趋势.在300—1000 K测试温度区间内,Cd1-xLuxO的电导率表现出金属电导行为且其电导率和热导率均随着Lu3+掺杂浓度的增大而升高;塞贝克系数在整个测试区间内均为负值,其随温度和载流子浓度的变化关系可用自由电子模型描述.     

行业特色型高校协同创新中心组建模式探析——以电子科技大学组建面向行业的协同创新中心为例

行业特色型高校是行业开展原始创新的主力军。电子科技大学作为电子信息行业的特色型大学,在组建协同创新中心过程中,探析了行业特色型大学协同创新中心的层圈结构概念模型,分析了中心组建要素和运行影响因素,提出科学的创新方向、企业的积极参与、政府的投入等是促进同类中心良好运行的重要因素。摘要:     

基于贝叶斯网络的卫星型号系统状态评估模型

为了改进卫星型号研制系统状态的管理与控制策略,提出了利用贝叶斯网络建立卫星型号系统状态评估的模型.利用贝叶斯网络处理不确定信息、不确定推理等方面的优势,计算出卫星型号研制系统的状态,给出能够最大程度地改进卫星型号研制系统状态的改进策略.     

基于Aspen Plus的煤层气精馏分离案例教学探讨

为帮助学生掌握“煤矿区煤层气利用技术”基本理论,结合煤层气低温精馏分离科研成果案例,运用Aspen Plus流程模拟软件对煤层气气液相平衡和低温精馏过程进行模拟和案例教学,根据煤层气精馏分离工艺要求,进行精馏塔操作变量计算和灵敏度分析,分析操作变量变化对精馏过程的影响,让学生直观了解塔内各参数的变化,掌握精馏分离操作,加深了对煤层气分离理论的理解,极大地提高了教学效率和质量,提升了学生的综合素质。