Its basic principle is to regard selecting or do not selecting a feature as a two - level independent factor ; the parameters of svm as continuous noise factors ; the accuracy of the svm model as the dependent variable ; to employ a fractional factorial experiment design to form the experiment which combines the two - level factors and the noise factors ; after the experiment is finished , to analyze the effect of each factor to determine the effective independent factor combination , namely the best feature combination for the svm model 其基本原?为:将一个输入变?的选取与否视为一个二水准的实验因子;将一个? ?视为一个?续的噪音因子;将模型的准确?视为因变? ; ?用部分因子实验设计得到实验因子与噪音因子的组合;实验完毕后,进?因子的效果分析,以决定最佳的实验因子组合,即最佳的输入变?组合。
In this research , the basal thermodynamic characteristics of " v - type " folded structure were discussed . at first by using numerical calculation in ansys , the paper analyses the influence of six basal configuration parameters of the structure on effective thermal conductivities of 54 kinds of sandwich panel with and its rule of change . and reasons are analyzed theoretically . then , by isight , experiment designs are redesigned of 40 kinds of different " v - type " folded core 本文对v型褶皱芯材夹层板的基本热力学性能进行了基础性研究,首先,运用有限元软件ansys ,对54种不同构型的v型褶皱芯材夹层板进行了计算,得出了6个基本特征参数对其当量导热系数的影响及当量导热系数的变化规律,并从理论上分析了原因。
Firstly , it theoretically gives a full illustration on the concept and meaning of the application sense in learning math . secondly , several factors which affect the forming of the students " application sense is analysed . thirdly , a detail and practical approach and experiment design on the systemic development of the students " application sense is raised 本文首先从理论上全面阐明了数学应用意识的概念、意义,以及影响学生应用意识形成的各种因素,并联系实际提出了系统培养学生应用意识的具体思路及具体的措施和实验方案。
The principle of experiment design , implementation effect and the response of the students were reported here . 218 questionnaires out of 2125 students were analyzed and the results indicated that the integrative experiment impressed the related biochemical principles in students ' memory , improved their experiment skill and the ability of creative thinking 我们对本校2005级医学本科各专业2125名学生开设了综合性实验“血清-球蛋白的分离纯化与鉴定” ,并对实验设计思路、教学效果反馈信息等进行了分析,以期总结出综合实验提高本科学生综合实验技能与创新能力的培养功能与方法。
A primary transducer experiment designed by the author consists of stability , repeatability . the problems and deficiencies are discussed , the corresponding measure is also presented . auto - regressive ( ar ) model and neural network time series mathematical models are used , it effectively identifies the different oil condition collected from the test data from laboratory and fields 在实验室条件下完成了电感式检测传感器和光纤检测传感器的定性分析武汉理工大学博士学位论文以及稳定性、重现性等实验研究,通过分析,针对传感器存在的问题与不足,探讨了各种解决办法,建立了传感器实验数据的自回归时间序列( ar )和神经网络模型。