dizhenjilu

sqlite接口函数说明文档，及相关函数的部分案例(sqlite interface function part of the case description documents, and related functions)

说明：  随着多媒体、网络技术的迅速发展，图像信息的应用日益广泛，对规模越来越大的图像数据库、可视信息进行有效的管理成为迫切需要解决的问题，灵活、高效、准确的图像检索策略是解决这一问题的关键技术之一。因此，基于内容的图像检索已成为国内外学者研究的主要热点问题，并取得了不少的成果。 本文主要对当今热门的基于内容的图像检索技术进行了研究，重点对它的算法进行研究。在半年的时间里，通过查阅很多相关的资料，并认真学习了基于内容的图像检索的基本理论，特别是深入研究了颜色直方图理论和累加直方图算法，最后在MATLAB平台下编程实现此系统，该系统可以实现基本图像检索的功能，根据用户输入的样本图像来与图像库中的图像进行特征匹配，然后找出与样本图像距离比较小的若干幅图像，并按照图像之间的距离由小到大的顺序显示给用户。 经过对该系统进行反复的调试运行后，该系统所实现的功能基本达到了设计目标，并且运行良好。当用户提供出所要查询的关键图后，系统就可以从用户提供的图像库中检索到与关键图相似的图片并排序返回给用户，达到了预期效果。 (With the rapid development of the multimedia and the network technology, the image information becomes more widely available, increasing the size of the image database, visual information for effective management of an urgent need to address the problem, flexible, efficient and accurate image retrieval strategy solve this problem one of the key technologies. The researchers are so keen on Content-Based Image Retrieval that they have made much progress. In this paper, today s popular content-based image retrieval technology is analyzed. And it mainly focuses on the research of its algorithm. In a period of half a year, Through access to relevant information and to seriously study the content-based image retrieval of the basic theory, in particular, in-depth study of the color histogram theory and cumulative histogram algorithm. Finally, this system should be implemented under the platform of the MATLAB by programming. In this system, the basic image retrieval functions can be achieved.)

开发软件名称：宾馆客房管理系统 开发软件单位：………… 直接对象 ：***宾馆 开发软件售出对象：酒店宾馆经营者

说明：  根据ODBC3.x driver 编写的操作数据库的库(operate the database )

应用vc编写的数据库管理程序(prepared by the database management procedures)

实现三相四桥臂永磁同步电机矢量控制,此方法有很多优点，与传统的三桥臂SVPWM相比，波形有明显改善 谐波减少(Three phase and four leg PMSM controller)

满汉楼管理系统（包括数据库，源代码）

说明：  《数据仓库原理、设计与应用》电子教案。适合初学者使用。(&quot Data warehouse theory, design and application of&quot electronic teaching plan. Suitable for beginners.)

说明：  每组不超过4人，每人从TPC-H中选择至少三个查询进行执行，并进行性能调整。同组人员所选择的查询不能相同。各查询均必须包含：两个以上的表连接操作，其包含至少一个聚集函数。 每位同学的该作业均放在一个命名如“姓名-学号-专业-作业1”的目录中 用尽能想到的所有技术方法，使得选定的查询的某些性能指标尽可能的差 用尽能想到的所有技术方法，使得选定的查询的某些性能指标尽可能的好(Each group has no more than 4 people. Each person selects at least three queries from TPC-H to perform and performs performance adjustment. The queries selected by the same group can not be the same. Each query must contain more than two table join operations, which contain at least one aggregation function. Each student's homework is placed in a directory named "name student number professional operation 1". Using all the technical methods that can be thought of, make certain performance indicators of selected queries as poor as possible. Use all the technical methods that you can think of, and make certain performance indicators of selected queries as good as possible.)

说明：  采用相场法，模拟Ni-Cu二元合金非等温凝固时各向异性系数对晶体生长行为的影响。(Phase-field method used to simulate the Ni-Cu non-isothermal binary alloy solidification crystal growth of anisotropic coefficient behavior.)