GPS水准高程等级的评定

GPS水准究竟能达到几等水准测量的精度,一直是广大GPS用户所关心的问题。从等级水准测量的限差入手,对这一问题进行分析与研究,提出一种充分利用已有水准点信息的评价方法,并给出相应的限差公式。

浅谈高等级三角高程测量在水电工程高程测量中的应用

水电工程一般建在深山峡谷中,陡坎多、高差大,不利于几何水准测量。三角高程测量不受地形起伏限制,外业测量工作量小、速度快,作业人员少,在水电工程低精度高程测量中应用广泛。怎样提高三角高程测量精度,一直是大家关注的问题。本文介绍了溪洛渡水电站三角高程测量的实践经验供大家借鉴。

GPS水准移动插值法相关问题分析

讨论GPS水准移动插值法内插与外推精度的差异、转换正常高的精度估计和高程等级评定等问题,利用某测区的GPS水准数据,对移动加权平均法、移动多项式曲面法以及顾及地球重力场模型的相应方法进行比较,给出选择最佳移动插值法的建议。

The Curriculum and Education System of Hong Kong Tourism Higher Education -- Taking Hong Kong Polytech University as an example

Hong Kong Polytech University is the representative of tourism higher education in Hong Kong, offering various courses in hotel management and tourism management at the Doctor, Masters and Bachelor levels, whose curriculum and education system have been quite perfect. The PolyU has cultivated a large number of high-quality professional people for the hotel and tourism industry. Excellent teachers, modem curriculum and the education concept of attaching great importance to the practice are the reasons why it can cultivate senior executives with international perspective, skills and social responsibility.

Descent Equations Starting from High Rank Chern-Simons

In this paper a set of generalized descent equations are proposed. The solutions to those descent equations labeled by r for any r(r ≥ 2, r ∈ N) are forms of degrees varying from 0 to(2r-1). And the case of r = 2 is mainly discussed.