一种改进的灰度预测模型

灰色预测模型通常是GM模型,但预测精度有时不令人满意。在对模型GM做了进一步研究的基础上,提出了一个预测精度较高的新灰色预测模型,并从理论上证明了这种模型可以有效提高建模数据序列的光滑度。最后把此方法应用于东部某镇GDP的建模中,试验结果表明该方法是可行且有效的,所建模型的精度优于传统GM（1,1）模型的精度。     

中小型软件质量度量应用与研究

目前国内对软件质量评估还没有明确的准则和衡量标准,难以实现定量评价,运用软件度量的最新研究成果,针对中小型软件进行质量指标分析,确定度量指标体系,建立定量度量模型,最终开发软件系统,进行案例分析。     

基于PowerBuilder的酒店客房管理系统的设计与实现

针对目前日益繁荣的酒店产业,为提高酒店客房管理效率。采用具有数据窗口对象技术的PowerBuilder作为前台开发工具,以PowerBuilder自带的ASA作为数据库开发界面友好、功能完备、安全性好的酒店客房管理系统。该系统的应用能够减少酒店客房管理人员的使用成本,提高酒店客房管理的效率。     

基于改进BP网络模型的公路流量预测

针对公路客货运量预测的问题,对现有的常用预测方法进行研究,提出改进BP神经网络预测模型。该模型首先采用动态陡度因子改变激励函数的陡峭程度,改善激励函数的响应特征,得到更好的非线性表达能力;其次利用附加动量因子,通过将以前的经验进行积累,降低了神经网络对误差曲面的局部细节敏感性,较好地遏制网络陷于局部最小;再次采取变学习率学习算法,先给一个较大初值,随着学习过程的进行,学习率不断减小,网络趋于稳定。改进BP算法既可以找到更优解,又可以缩短训练时间。结合某地区的公路运量相关数据,对改进BP神经网络预测模型进行了验证。实验结果表明,该模型的相对误差和迭代次数都取得了较大的改善,对公路客货运量预测很有效。     

基于项目教学法的后期制作实践教学改革与探索

在介绍项目教学法和"后期制作"课程特点的基础上,分层次、分步骤阐述了项目教学法应用于该课程教学的整体实施思路。     

东莞IT企业人才需求调研

采用问卷、访谈调查和文献调查相结合的方法,对东莞IT人才需求状况进行调查研究,得出了东莞IT市场对计算机人才数量、质量、能力等各方面的需求情况,为探索适应东莞经济社会双转型战略背景下的高职计算机专业人才培养提供了参考依据。     

Research on navigation of bidirectional A* algorithm based on ant colony algorithm

To overcome the lengthy search time, massive space occupation, and overlong planned path of the traditional A* algorithm, this paper integrates the bidirectional search with the intelligent ant colony algorithm to obtain the heuristic function selection factor, and uses the factor to improve the evaluation function of the algorithm. The simulation results show that the improved algorithm achieved better dynamic navigation than the traditional A* algorithm both in search time and distance, featuring shorter path searching time and the algorithm running time. Therefore, the result of this research has effectively reduced the search time and enhanced the dynamic search.

     

Smart remote-controller designed with combining speech-recognition microprocessor and wireless sensor networks

Microsystem Technologies - The objective of this study was to design a smart remote-controller combining with speech-recognition and self-learning function Module and blue-tooth wireless sensor...     

基于现代学徒制的校企双元育人机制构建与实施路径

以现代学徒制为载体,加快构建校企双元育人机制是我国职业教育改革的新要求。基于现代学徒制的发展趋势,保障校企双元育人的有效落实,需要将校企共建命运共同体、共建高水平专业和课程标准、共建育人队伍、共建共享教学资源作为双元育人机制的建设主线。在此基础上提出注重顶层设计、坚持立德树人目标、完善职教师资培养体系、打造高水平实训基地等校企双元育人的实施路径。     

Creep behavior and failure mechanisms of CVI and PIP SiC/SiC composites at temperatures to 1650 °C in air

Creep properties of 2D woven CVI and PIP SiC/SiC composites with Sylramic™-iBN SiC fibers were measured at temperatures to 1650 °C in air and the data was compared with the literature. Batch-to-batch variations in the tensile and creep properties, and thermal treatment effects on creep, creep parameters, damage mechanisms, and failure modes for these composites were studied. Under the test conditions, the CVI SiC/SiC composites exhibited both matrix and fiber-dominated creep depending on stress, whereas the PIP SiC/SiC composites displayed only fiber-dominated creep. Creep durability in both composite systems is controlled by the most creep resistant phase as well as oxidation of the fibers via cracking matrix. Specimen-to- specimen variations in porosity and stress raisers caused significant differences in creep behavior and durability. The Larson-Miller parameter and Monkman-Grant relationship were used wherever applicable for analyzing and predicting creep durability.