5 . the sentence aggregation model and language resource process model are established 建立了作战文书自动生成的句子优化聚合模型和语言资源处理模型。
water tree of power cable is a fractal structure, which is attribute to diffusion-limited aggregation model 推断电缆的水树具有分形结构,属于有限扩散凝聚生长模型。
this paper presents a new method for simulating structure and thermal conductivity of nano-fluids by means of the theory of brown motion and the diffusion-limited colloidal aggregation model ( dlca ) 纳米流体是一种自相似的分形结构,而纳米粒子的运动传热是纳米流体导热系数较高的主要原因。
with the theory of the diffusion-limited colloidal aggregation model ( dlca ), the processes of particles aggregation and breaking of the clusters are simulated . the fractal theory is applied to analysis of the aggregation structure of nanoparticles 在dcla生长模型的基础上,模拟了纳米粒子的聚集过程和大粒子团的分裂,并用分形理论对纳米流体的聚集结构进行了描述。
the particles aggregation was simulated using particle-cluster and cluster-cluster aggregation model . several type of floes was reached and its morphological characteristics was analyzed the fractal dimension, density and porosity of floes was studied by changing sticking probabilities, sticking position, particle number, particle concentration, difrusion coefficient and motion trajectory . the parameters by which special floes growth were determined . in the study of morphology, floes of yellow river's loess particles was observed by tv-microscope . its morphological characteristics were obtained by image analysis . the effect of fractal dimensions by stirring time strring speed, macromolecule flocculant dosage, flocculant concentration and particle concentration was studie . its rule of change was obtained . on the basis of other studies, the flocculation kinetics and floes structure was studied 本文应用计算机模拟技术,在二维空间内采用单体凝聚和集团??集团凝聚两种模型对颗粒凝聚过程进行了模拟,得到了多种形态的絮体,并对絮体进行了形态分析,通过改变粘附概率、粘附位置、颗粒数量、颗粒浓度、扩散系数和运动路径等模拟参数,我们考察了絮体分形维数、密度和孔隙率随模拟条件变化的影响规律,得到了形成特定形态絮体的控制参数。