低磁雷诺数不可压缩磁流体湍流的非线性涡黏性k-ω封闭模型

在低磁雷诺数近似下,通过逐项模化湍动能输运方程的磁流体源项,提出一个适于任意的磁场布置形式的非线性涡黏性的磁流体湍流k-ω模型.在该模型中,使用Kenjeres-Hanjalic模型和Song的非线性涡黏性模型分别模化脉动电场-速度相关量及各向异性的雷诺正应力,并采用Wilcox低雷诺数k-ω模型对层流化进行估计.通过与直接数值模拟结果和实验结果比较,表明本文模型给出的速度型误差小于5%,摩擦阻力系数误差小于10%,能够满足工程需要.     

Distributed location-based query processing on large volumes of moving items

Recently,new techniques to efficiently manage current and past location information of moving objects have received significant interests in the area of moving object databases and location-based service systems. In this paper,we exploit query processing schemes for location management systems,which consist of multiple data processing nodes to handle massive volume of moving objects such as cellular phone users. To show the usefulness of the proposed schemes,some experimental results showing performance factors regarding distributed query processing are explained. In our experiments, we use two kiids of data set：one is generated by the extended GSTD simulator and another is generated by the real-time data generator which generates location sensing reports of various types of users having different movement patterns.     

Advances in simulated modeling of vibration systems based on computational intelligence

Computational intelligence is the computational simulation of the bio-intelligence, which includes artificial neural networks, fuzzy systems and evolutionary computations. This article summarizes the state of the art in the field of simulated modeling of vibration systems using methods of computational intelligence, based on some relevant subjects and the authors' own research work. First, contributions to the applications of computational intelligence to the identification of nonlinear characteristics of packaging are reviewed. Subsequently, applications of the newly developed training algorithms for feedforward neural networks to the identification of restoring forces in multi-degree-of-freedom nonlinear systems are discussed. Finally, the neural-network-based method of model reduction for the dynamic simulation of microelectromechanical systems (MEMS) using generalized Hebbian algorithm (GHA) and robust GHA is outlined. The prospects of the simulated modeling of vibration systems using techniques of computational intelligence are also indicated.     

5 种两栖爬行动物首次在广东省发现

记述了广东省两栖动物新记录2种：大花角蟾Megophrys giganticus、黑眼睑小树蛙Phylautus gracilipes以及爬行动物新记录3种：半叶趾虎独山亚种Hemiphylodactylus yunnanensis dushangnensis、广西后棱蛇Oligodon guangxinsis、侧条后棱蛇Oligodon Lateralis、半叶践虎属Hemiphylodactylus亦为广东省新记录．     

A computational-intelligence-based optimization of agents'' initial positions in land combat simulation

The optimization of agents' initial properties enables agents to perform their assigned tasks more perfectly. This paper presents an optimizing method using the combination of radial basis function (RBF) neural network and genetic algorithm (GA). In the land combat simulation, the method can ensure that the agents optimized defeat the agents not optimized absolutely. Compared with the optimization based on support vector machines (SVM), the proposed method improves the efficiency more than twenty times, so it suits the cases where the speed as well as performance is required.     

单桩非线性分析的半解析半数值方法（英）

提出了一种半解析半数值方法，该方法可用于计算埋置于多层土中单桩的荷载位移非线性分析，在本文中，采用了两种理论模型来构造单桩的传递函数，第一种模型为双曲线模型，用于计算桩土界面处的剪尖力与其相对位移的非线性关系，第二种模型为Randolph所提出的理论解，用于确定桩周土中的剪应力和位移场，对现场试验结果和有限元分析结果进行了比较后说明，按本文所建议的方法所得的三种计算结果（荷载位移曲线，证明了本文所提方法的可靠性和准确性，此外，根据本文所提的构造传递函数的方法，考虑对桩，桩对土，承台对桩的相互影响，可以构造出考虑桩－土－台共同作用的传递函数，近而可以计算分析桩－土－台共同作用。     

8-羟基喹啉合锂作为发光层的明亮电致发光器件

以LiOH与 8_羟基喹啉反应合成了 8_羟基喹啉合锂配合物 ,用元素分析、热重分析和红外吸收光谱分析确定了其组成为Li (C9H7NO)·4H2 O ,结果表明该配合物是热稳定性高、升华性好、光致发光性能优越的蓝色发光材料 ;以该配合物作为发光层和电子传输层 ,用真空镀膜法得到了结构为ITO TPD LiQ Al的明亮的蓝 -绿色电致发光器件。     

品质机能展开法在科技辅助产品设计中的应用--以偏瘫患者轮椅为例

使用者需求及临床专家意见，是医疗科技辅具开发人员在产品开发中重要的参考准则。为了要在竞争的产业环境中获得产品优势，产品设计与开发人员需不断努力，方能确保产品在市场上的竞争力。品质机能展开(Quality Function Deployment，QFD)是一系统性方法，在产品企划和开发阶段能充分掌握使用者需求及临床专家意见，进而提升开发团队的能力并降低产品失败率。临床上，偏瘫患者常会以非患侧的上肢与下肢来驱动普通轮椅，由于不对称的施力方式，会造成对患者的危险与伤害。本研究利用品质机能展开法，建立以顾客期望为基础的产品开发程序，企划产品的发展方向，作为偏瘫患者轮椅产品设计与开发的依据，期望能提升偏瘫患者的生活品质。