From a new viewpoint of transportation efficiency , authors propose the aggregative total travel time to measure the level of transportation efficiency and macro - accessibility of one given land - use pattern 摘要从交通效率的新视角出发，采用总出行时间来衡量土地利用形态的交通效率和宏观可达性。
Metal nanoparticles exhibit unique thermal , electronic , magnetic and optical properties because of the small sizes , large specific surface characteristics and the aggregative trend 金属纳米粒子由于其小的尺寸和大的比表面积等特点，使其具有独特的热性能、电性能、磁性能和光性能，以及很强的团聚趋势。
Metal nanoparticles exhibit unique thermal , electronic , magnetic and optical properties because of the small sizes , large specific surface characteristics and the aggregative trend 摘要金属纳米粒子由于其小的尺寸和大的比表面积等特点，使其具有独特的热性能、电性能、磁性能和光性能，以及很强的团聚趋势。
Abstract : in this paper we analyse some predictation approaches of random time series and by using arma model we predict effectually the weighted aggregative indexes of securities market in shanghai and shenzhen 文摘:分析了随机时间序列的统计预测方法，并利用arma模型对深沪市未来短期指数进行了有效预报。
To effectively identify the particulate and aggregative fluidization of fluidized bed , bp neural network model has been developed . the results show that bp neural network model is more efficient than the traditional method 散式流化和聚式流化的判别仿真实验表明， bp神经网络流型识别模型能够准确快速地识别这两类模型，识别的准确率高于传统判别方法。
Concerning the problem of multi - target weighted aggregative teaching assessment , the difference of targets in weight virtually indicates that these targets are in different hierarchy of the system , and therefore cannot be " talked about in the same hierarchy " 摘要在多指标加权综合教学评估问题中，指标的不同权重实质上指示出这些指标处于系统的不同层次，因此不能“同层并论” 。
The way of improvement lies in adopting a system posture ordering based on connection number to carry out aggregative assessment so as to make full use of hierarchical information of different weighted targets to give an aggregative assessment conclusion which satisfies reality 改进的办法是采用基于联系数的系统态势排序进行综合评估，以充分利用不同权重指标的层次信息，得出符合实际的综合评估结论。
Securities investment funds ( mutual funds ) means a way of aggregative securities investment , in which the interests and risks are shared together by pooling the capitals of the investors through issuing funds unit and transferring it to the trusteeship of the trustee , which are managed and operated by the funds managers who engage in the investment of the financial tools such as stocks , bonds , etc . as the combinative product of the trusteeship system and modern financial system , its trust design of transferring properties to the management of experts enable the investors to gain rich returns as well as avoid the risks , which gains the much favor of the investors 证券投资基金(共同基金)是指通过发行基金单位，集中投资者的资金，由基金托管人托管，由基金管理人管理和运用资金，从事股票、债券等金融工具投资的一种利益共享、风险共担的集合证券投资方式。作为信托制度与现代金融制度结合的产物，以转移财产为专业人员管理的信托设计，使得投资者既避免了风险，又获得丰厚的回报，倍受投资者青睐。世界共同基金自1868年在英国诞生以来已有上百年历史，我国的投资基金则是在1991年才真正起步，而真正意义上的证券投资基金更是近几年来的事。
Finally , bp neural network recognition model of particulate and aggregative fluidization and rbf neural network prediction model for chaotic time series of circulating fluidized bed have been set up , which provides new methods for on - line recognition of fluidization state and control and prediction of circulating fluidized bed systems 最后建立了散式流化和聚式流化bp神经网络识别模型和循环流化床中的混沌时间序列的rbf神经网络预测模型，为流型在线识别和循环流化床系统的控制和预测等提供了新的方法。
By dividing the total travel time into aggregative inter - group travel time and intra - group travel time , authors deduce the function of total travel time and establish an urban land - use optimum model , which can maximize the transportation efficiency and macro - accessibility under certain restrictions of economy , land and population 通过把总出行时间分解为组团内部的出行时间与组团之间的出行时间，推导出指标的函数表达式，并建立了一定经济、土地、人口约束下，总出行时间最小的城市土地利用优化模型。
