摘要：Rare earth oxide was prepared via direct pyrolysis of rare earth chloride solution. Based on this technique, a new-type jet-flow pyrolysis reactor was designed, and then the fluid dynamics (pressure and velocity) inside the reactor was numerically simulated using a computational fluid dynamics method. The self-produced pressure (p) and the fuel inlet velocity (v) satisfied a quadratic function,p=0.06v2+0.23v?4.49. To fully utilize the combustion-generated heat in pyrolysis of rare earth chloride, an appropriate external pressure p=v2+3v?4.27 should be imposed at the feed inlet. The 1.25- and 1.5-fold increase of feed inlet diameter resulted in decline of adsorption dynamic pressure, but the intake of rare earth chloride increased by more than 30% and 60%, respectively. The fluid flow in the reactor was affected by the feeding rate; the fluid flow peaked near the throat of venturi and gradually smoothed down at the jet-flow reactor’s terminal along with the sharp decline of feeding rate.

摘要：为了分析传感器结构对籽粒冲击响应信号的影响,建立了籽粒检测传感器的三维结构模型,利用SolidWorks分析了传感器的振动模态。结果表明:传感器的上层面板的结构尺寸是影响传感器振动特性的主要因素,随着面板宽度b的增加,相对变形率γ首先迅速减小;随着b的进一步增加,γ逐渐减小至恒定值,固有频率f则单调增大;增加面板厚度h,固有频率f和相对变形率γ均呈单调增加趋势。将传感器安装到联合收获机振动筛尾部支架上进行清选损失检测试验。结果表明,传感器能够在振动干扰中识别籽粒冲击信号,当b=30 mm时,籽粒冲击响应时间小于2 ms,远小于b=120 mm时的籽粒冲击响应时间。

摘要：提出一种基于线性同余生成器(LCG)来构造IDMA系统中随机交织器的方法.该方法通过选择LCG的参数使其周期达到最大.为了设计方便,取LCG的模为2的整数幂.利用文中的方法产生母交织器,再对其进行循环移位,即得到每个用户的交织器.其中超出交织范围的随机数将被丢弃.数学推导证明,在上述条件下LCG的模必须严格大于交织器的深度.利用基向量相关峰值方法和误比特率性能证明了文中方法的有效性.

摘要：将逆系统方法与模糊神经网络相结合,提出一种基于模糊神经网络α阶逆系统的发酵过程解耦控制方法.在分析了系统可逆性的基础上,利用模糊神经网络建立发酵过程的非线性逆模型,然后将得到的模糊神经α阶逆系统与发酵过程串联复合成伪线性系统,最后设计专家控制器实现高性能闭环解耦控制.仿真结果表明,提出的解耦控制方法能够适应发酵过程模型的不确定性和参数的时变性,具有较强的鲁棒性,克服了解析逆系统解耦控制方法依赖于过程模型和对模型参数的变化很敏感的缺点,且结构简单,易于实现.

摘要：As a core part of subsea production systems,subsea control modules(SCMs)are costly,difficult,and expensive to install and inconvenient to use in underwater ***,performance and function tests must be carried out before launching *** study developed a testing device and an SCM test by investigating SCMs and their *** testing device includes four parts:a hydraulic station,an SCM test stand,a signal generating device,and an electronic test ***,the basic indices of the testing device were determined from the performance and working parameters of the ***,the design scheme of the testing device for the SCM was tentatively proposed,and each testing device was ***,a practical measurement of the SCM,in combination with the hydraulic station,SCM test stand,signal generator,electronic unit,and highpressure water tank,was carried out according to the test *** measurement mainly involved equipment inspection before testing and an experimental test for the *** validity and feasibility of the testing device and method were simultaneously verified through an association test.

摘要：分析了文本分类过程中存在的混淆类现象,主要研究混淆类的判别技术,进而改善文本分类的性能.首先,提出了一种基于分类错误分布的混淆类识别技术,识别预定义类别中的混淆类集合.为了有效判别混淆类,提出了一种基于判别能力的特征选取技术,通过评价某一特征对类别之间的判别能力实现特征选取.最后,通过基于两阶段的分类器设计框架,将初始分类器和混淆类分类器进行集成,组合了两个阶段的分类结果作为最后输出.混淆类分类器的激活条件是:当测试文本被初始分类器标注为混淆类类别时,即采用混淆类分类器进行重新判别.在比较实验中采用了Newsgroup和863中文评测语料,针对单标签、多类分类器.实验结果显示,该技术有效地改善了分类性能.

摘要：The process of division, growth and death for tumour cell mass in the early is simulated. An integrated GUI is provided for users to set the value of each parameters, which are cell growth rates, cell mass division rates, cell mass death rates, simulate type, maximum running time, polarity and cell colour. It can display the growth process of each cell on result GUI. Also, it can display the values of each parameters for observing and analysing in current life cycle on result GUI, which are cell mass division times, cell mass death rate, cell mass division rate and cell mass growth rate. In the process of simulation, The cell growth rate is described by the approach to combine the exponential model with the linear model. In addition, a linked list data structure to store the tumour cells is used by the cellular automata for a reference to determine the position of each cell. It sets up two linked list to store the cells, one of them save the new small division cells and the other one save the big cell. That can make the painting process of cells on result GUI clearer and more organized. At last, the polarity oftumour growth is described for determining the growth direction of cells.

摘要：This paper proposes a new cell intuition simulation method which is a combination of intuitive simulation calculation method and the operation of binary image, and applied it in the innovation of the graphic design process. First of all, we study how to express a variety of graphics, and establish the definition of cell intuitive model, work out the cell intuitive operation process and many new cellular operators such as a variety of matrix blocks crossover operator, a variety of matrix blocks mutation operator, matrix blocks replace operator, matrix blocks compression operator, matrix blocks extension operator. By choosing two or more cells and selecting the artificial selection or fitness selection, we can set up and visualize the design and pick the best design results .Finally, validation is made on this algorithm by an example, and a innovation graphic is also represented.

摘要：***-based agricultural machinery monitoring WEBGIS is flexible and dynamic,but this flexibility and dynamic characteristics reduce the performance of ***,it is necessary to use built-in optimization features *** Framework,some performance optimization techniques in program design and *** cache technology to reduce the loading of server,and make the designed system work more efficiently.