Existence results for impulsive differential inclusions with nonlocal conditions

In this paper, we shall establish sufficient conditions for the existence of mild solutions for nonlocal impulsive differential inclusions. On the basis of the fixed point theorems for multivalued maps and the technique of approximate solutions, new results are obtained. Examples are also provided to illustrate our results.     

水循环泵节能控制方法在冬季供暖中的应用

介绍了冬季供暖水循环泵节能控制方法,采用了传统PID结合温度模糊控制和PWM的方法.可预设转折频率、转折延时、不同温度段脉冲频率上、下限值,节能控制柜根据出水管和回水管两者温差通过PID算法调节水泵运转频率,当水泵运转频率低于转折频率,转折延时后,采用PWM方式;若水泵运转频率高于转折频率,则进入模糊PID调节.PWM技术的应用,使得供暖温度能够结合室外大气温度进行实时调控.该方法在满足用户的温度需求前提下,可使水泵电机节能30%以上.     

A system-level model for a silicon thermal flow sensor

A system-level model with lumped parameters for a thermal flow sensor is presented. The model is built with 13 circuit cells consisting of thermal resistors and thermal capacitors in SPICE. The circuit cell originates from the heat conduction equation using the Finite Differential Method, including the 2-D thermal conduction cell, the convection cell, and the thermal capacity in the chip. Based on the thermal model of the flow sensor, the 2-D temperature distribution of the chip can be calculated with SPICE in both the constant power mode (CP) and constant temperature difference mode (CTD). As an example, the system level model of the thermal anemometer in the CTD mode was established in PSPICE. Wind tunnel test was carried out to verify the system model, and show a reasonable agreement with the simulation results, with an error less than 8%.     

Infrared aerial small target detection based on digital image processing

Multimedia Tools and Applications - Aiming for the problem detection of infrared imaging aerial small target under complex background, an intelligent algorithm is presented based on digital image...     

基于图像混合图结构的区域匹配和图像约化算法

讨论使用混合图对图像进行识别的连通性、相似性和可比性原则,并提出一种混合图结构的约化算法。通过可比性原则,对图像的混合图结构中复合节点用参考图像进行比较,计算出混合图复合节点在参考图像中的可能匹配和相似度,以此对混合图结构进行约化。为方便计算和阐述约化过程,使用单个属性,对混合图进行属性标记,把相似性比较简化为线性复杂度的排序和查询运算。结果显示,该方法切实可行。     

流程工业CIMS中综合优化问题的研究

文章首先提出了流程工业及其CIMS中的各种优化问题;;小结了各种解决优化问题的求解技术.在此基础上提出了一种基于多级优化的一种流程工业CIMS结构.最后;;作者提出了一种解决流程工业CIMS多目标优化问题的最大熵优化技术     

A new neural network algorithm for planarization problems

To deal with the planarization problem widely used in many applications including routing very-large-scale integration （VLSI） circuits, this paper points out that only when its vertices are arranged in some specific order in a line can a planar graph be embedded on a line without any cross connections or cross edges. Energy function is proposed to meet the need of embedding a graph on a single line and route it correctly. A Hopfield network is designed according to the proposed energy function for such embedding and routing. The advantage of the proposed method is that it not only can detect if a graph is a planar one or not, but also can embed a planar graph or the maximal planar subgraph of a non-planar graph on a single line. In addition, simulated annealing is employed for helping the network to escape from local minima during the running of the Hopfield network. Experiments of the proposed method and its comparison with some existent conventional methods were performed and the results indicate that the proposed method is of great feasibility and effectiveness especially for the planarization problem of large graphs.     

基于聚类的多数据库分类算法的研究与实现

针对多数据库挖掘的预处理,提出了运用聚类的思想来对数据库进行分类。同时,提出了改进的BestClassification算法。通过实验证明这种分类方法具有较好的有效性和正确性。     

3D-QSAR and molecular docking studies of selective agonists for the thyroid hormone receptor beta

Three-dimensional quantitative structure-activity relationship (3D-QSAR) models were developed using comparative molecular field analysis (CoMFA) and comparative molecular similarity analysis (CoMSIA) on a series of agonists of thyroid hormone receptor beta (TRbeta), which may lead to safe therapies for non-thyroid disorders while avoiding the cardiac side effects. The reasonable q(2) (cross-validated) values 0.600 and 0.616 and non-cross-validated r(2) values of 0.974 and 0.974 were obtained for CoMFA and CoMSIA models for the training set compounds, respectively. The predictive ability of two models was validated using a test set of 12 molecules which gave predictive correlation coefficients (r(pred)(2)) of 0.688 and 0.674, respectively. The Lamarckian Genetic Algorithm (LGA) of AutoDock 4.0 was employed to explore the binding mode of the compound at the active site of TRbeta. The results not only lead to a better understanding of interactions between these agonists and the thyroid hormone receptor beta but also can provide us some useful information about the influence of structures on the activity which will be very useful for designing some new agonist with desired activity.