适于pH值控制的自学习专家控制器

针对ｐＨ值控制特点,提出一种自学习算法并设计了适于ｐＨ值控制的自学习专家控制器。通过仿真验证了自学习算法的有效性。     

试论计算机专业数学教学的现代性

从现代教育与数学的关系出发,分析了现代计算机专业不同层次的培养目标对数学教育的需求,并针对当前计算机专业数学教学存在的问题,讨论了数学教学改革应体现的现代性     

区域分解法解黑油数值模拟问题的并行计算

区域分解方法是适应并行计算机的工作原理应运而生的偏微分方程数值算法,将它应用于解决三维实际问题且行之有效的并行软件并不多见．本文基于共享内存多处理机并行系统解决一类三维黑油油藏数值模拟问题,分别给出了子结构类型ＤＤＭ和Ｓｃｈｗａｒｚ类型ＤＤＭ两种区域分解方法的并行算法,并进行了比较,就它们在实际应用中的区域划分对收敛速度及计算时间的影响进行了讨论     

内蒙古荒漠草原和草原化荒漠地区鸟类区系的过渡性特征

在内蒙古荒漠草原和草原化荒漠地区共记录到鸟类 ８４ 种,隶属于 １３ 目 ３０ 科 ５８ 属．对这一荒漠和草原过渡地区的鸟类区系、生态地理分布及生态适应特征进行了讨论分析,并对西部荒漠亚区与东部草原亚区界线问题进行了论述     

乌梁素海湿地鸟类新记录

１９９６～１９９８ 年期间,作者在研究乌梁素海湿地鸟类物种多样性过程中,所记录到的鸟类中有６ 种为该湿地的新记录．其中红喉潜鸟为内蒙古新记录,彩鹬为内蒙古繁殖的最西界     

用双液面干涉法层析光学玻璃的光学均匀性

通过用双液面干涉法检测及用计算机处理结果,实现了对光学玻璃均匀性的层析,其结果可给出任意层的光学均匀性分布及最大不均匀性的值,以及该值按层分布情况,其精确度可达１０＾－６。     

捕食被捕食链型系统的全局稳定性

本文考虑了ｎ维Ｌｏｔｋａ－Ｖｏｌｔｅｒｒａ捕食捕食链型系统,证明了正平衡点的局部稳定性蕴含了全局稳定性。     

Delay-dependent decentralized H∞ filtering for uncertain interconnected systems

This article considers delay dependent decentralized H∞ filtering for a class of uncertain intercon nected systems,where the uncertainties are assumed to be time varying and satisfy the norm-bounded conditions.First,combining the Lyapunov-Krasovskii functional approach and the delay integral inequality of matrices,a sufficient condition of the existence of the robust decentralized H∞ filter is derived,which makes the error systems asymptotically stable and satisfies the H∞ norm of the transfer function from noise input to error output less than the specified up-bound on the basis of the form of uncertainties.Then,the above sufficient condition is transformed to a system of easily solvable LMIs via a series of equivalent transformation.Finally,the numerical simulation shows the efficiency of the main results.     

Visual Perception-Based Fault Diagnosis in Froth Flotation Using Statistical Approaches

Froth flotation is an important mineral concentration technique. Faulty conditions in flotation processes may cause the huge waste of mineral resources and reagents, and consequently, may lead to deterioration in terms of benefits of flotation plants. In this paper, we propose a computer vision-aided fault detection and diagnosis approach for froth flotation. Specifically, a joint Gabor texture feature based on the Copula model is designed to describe froth images; a rejection sampling technique is developed to generate training sets from the quality distribution of real flotation products, and then an isolation forest-based fault detector is learned; and a fault diagnosis model based on spline regression is developed for root cause identification. Simulation experiments conducted on the historical industry data show that the proposed strategy has better performance than the alternative methods. Thereafter, the entire framework has been tested on a lead-zinc flotation plant in China. Experimental results have demonstrated the effectiveness of the proposed method.     

宿根草本植物的发展前景

给出了宿根草本植物的定义及特点,叙述了宿根草本植物的繁殖、栽植及管理方面的问题。指出在保护城市生物的多样性,丰富城市景观色彩及层次,培养昆虫天敌等方面。宿根草本植物均能满足城市景观的要求,市场需求正在逐渐加大,发展前景广阔。