基于P3D的飞机飞行航迹数据回放演示程序设计     

马腾达 《教育教学论坛》2020,(5):86-88

在传统的飞机飞控系统教学中,通常以曲线形式显示飞机的姿态、舵面等数据,直观性不强,学生的学习难度较大,针对这一问题,利用虚拟仿真技术,基于P3D平台,设计了飞机飞行航迹数据回放演示程序,能够直观地将飞机的飞行姿态、舵面等数据以真实形象的三维场景表现出来,降低了学生的抽象思维难度,提高了学习效率。  相似文献   

数据结构上机作业的综合设计     

张山清 《三明学院学报》2003,20(2):142-147

加强上机实践 ,组织较好的上机题目 ,在数据结构的教学中起着重要作用。本文介绍了数据结构上机实践中 ,如何有效组织较综合的上机题目 ,充分调动学生的学习积极性 ,以达到较好的学习效果。  相似文献   

Complicating methodological transparency     

Sarah Bridges-Rhoads  Jessica Van Cleave  Hilary E. Hughes 《International journal of qualitative studies in education》2016,29(4):536-552

A historical indicator of the quality, validity, and rigor of qualitative research has been the documentation and disclosure of the behind-the-scenes work of the researcher. In this paper, we use what we call methodological data as a tool to complicate the possibility and desirability of such transparency. Specifically, we draw on our disparate attempts to address calls for transparency about methodological processes in our respective dissertation studies in order to examine how novice researchers can explore transparency as a situated, ongoing, and philosophically informed series of decisions about how, when, and if to be transparent about our work. This work contributes to conversations about how qualitative researchers in education can understand, discuss, and teach qualitative inquiry while continuing to push the boundaries of the field.  相似文献   

Location Data Fusion Based on Group Consensus     

李国栋  陈维南 《东南大学学报》1997,(1)

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Multiple regression analysis of sib-pair data on reading to detect quantitative trait loci     

D. W. Fulker  L. R. Cardon  J. C. Defries  W. J. Kimberling  B. F. Pennington  S. D. Smith 《Reading and writing》1991,3(3-4):299-313

A simple extension of the DeFries and Fulker multiple regression model for twin analysis is applied to the problem of detecting linkage in a quantitative trait. The method, employing sib pairs, is based on that of Haseman and Elston. Reading data from 19 extended pedigrees were analyzed employing RLFPs as markers on chromosome 15 and using the widely available statistical applications software package, SAS. A number of possible linkages were detected, indicating that this approach is both powerful and effective, especially in the case of selected samples. Detecting genotype-environment interaction and the issue of power are briefly discussed. The programs used are available upon request.  相似文献   

基于遗传算法的Spark中间结果数据迁移策略     

梁毅  陈金栋  苏超  毕临风 《教育技术导刊》2020,19(4):89-92

Spark是大数据内存计算系统的典型代表,通过内存缓存数据加速迭代型、交互型大数据应用的运行。基于时间窗口的数据分析是一类典型的大数据迭代型应用。基于Spark平台运行时间窗口数据分析应用,存在中间结果数据放置不均的问题,造成应用执行效率降低。针对上述问题,提出基于遗传算法的Spark中间结果数据迁移策略,通过考虑中间结果数据迁移时机、迁移数据规模,并使用遗传算法优化选取迁移数据放置位置,提高时间窗口应用执行效率。实验结果表明,在既有Spark平台中,采用该迁移策略可使时间窗口应用执行时间最大减少28.45%,平均减少21.59%。  相似文献   

Neural network approach for modification and fitting of digitized data in reverse engineering     

鞠华  王文  谢金  陈子辰 《浙江大学学报(A卷英文版)》2004,5(1):75-80

Reverse engineering in the manufacturing field is a process in which the digitized data are obtained from an existing object model or a part of it, and then the CAD model is reconstructed. This paper presents an RBF neural network approach to modify and fit the digitized data. The centers for the RBF are selected by using the orthogonal least squares learning algorithm. A mathematically known surface is used for generating a number of samples for training the networks. The trained networks then generated a number of new points which were compared with the calculating points from the equations. Moreover, a series of practice digitizing curves are used to test the approach. The results showed that this approach is effective in modifying and fitting digitized data and generating data points to reconstruct the surface model.  相似文献   

中国银行业实施客户关系管理的策略探讨   总被引：1，自引：0，他引：1  

李媚  黄瑞芬 《青岛职业技术学院学报》2005,18(2):45-48

客户关系管理(CRM)是一种以客户为中心的创新营销策略。本文通过对目前中国银行业面临的主要问题的剖析,借鉴外资银行先进的技术经验,探讨中国银行业在客户关系管理应用方面采取的有效措施,旨在提高中国商业银行对客户服务的水平,提高客户的满意度与忠诚度,最终提高银行的核心竞争力。  相似文献   

从特殊文件中恢复数据的一种方法及其讨论     

贾国荣 《黔南民族师范学院学报》2003,23(6):16-21

介绍了一种特殊的恢复数据的方法，即是用汇编程序从包含有数据信息的JPG图片文件中读取有用数据来达到恢复数据的目的。  相似文献   

确保上机考试数据安全的几个重要环节   总被引：1，自引：0，他引：1  

舒跃林 《宁德师专学报(自然科学版)》2003,15(3):288-290

保证考生考试结果数据的安全是上机考试的生命,从服务器选用、目录结构规划、权限设置和考试结果数据备份等方面阐述如何确保考试数据的安全。  相似文献