山地旅游区气候舒适度的时空特征分析

本文以浙江省仙居县多年气象资料为基础,对气温作了短序列订正,结合GPS的定位资料和仙居县1∶1万数字高程模型对气温作了空间推算。在此基础上,结合相对湿度和风速,完成了仙居县的气候舒适度空间分布图,同时结合DEM的高程分级资料,统计各代表月份地形舒适区域分布面积,分析了空间分布特征。结果表明,在时间分布上,5—10月,气候舒适;在空间分布上,以7月为例,舒适区域主要集中分布于丘陵和低山。     

特征分析在镍矿资源总量预测中的应用

特征分析(亦称决策模拟)是一种多元统计分析方法。其基本原理是定量类比,通过建立控制区,分析控矿地质条件的重要性。即查明控制区内变量相互间的相关性,以确定各地质特征的权值,然后与预测区进行相似性的比较,求得联系度,以此来表示预测对象的成矿可能性,并据此圈出有利的成矿远景区。国外用此方法已成功地圈定出勘探靶区,并在探索半隐伏或隐伏矿床方面,已取得了成功的经验。我们通过对镍矿总量预测方法的研究,将特征分析与其它数学方法相结     

简易切管器

目前所使用的割管器,以水压切管器最普遍,但这种切管器制作较难,成本亦高,且常由于制作质量不好,而难以获得预期的成效,我队最近按照苏联新近的经验,制造了一种简易切管器,经实际使用,效果良好,此种切管器制作简单,成本低,操作容易,为了广泛交流经验,兹将制作及使用经验介绍如下：     

用长程吸收法测量大气中的水汽含量

长程吸收法是目前确定大气微量气体成份平均浓度的一种高灵敏度方法,本文首先报导在实验室内,利用CO激光作光源,在自行设计的吸收池内进行原理性模拟测量,然后介绍室外测量装置和相应的测量结果。     

选支CO激光86条发射谱线大气透过率的研究

本文给出了用实验方法得到的5.3—6.3微米范围内CO激光的86条谱线大气衰减系数的研究结果,简单地介绍了实验装置并对结果进行了讨论。分析表明,这一范围内的激光谱线在大气传输过程中主要受到水汽的衰减。各谱线大气衰减系数的实验值和相应的计算值之间存在着不同程度的差异,是由于水汽的共振吸收频率和激光发射频率之间的差异以及计算时采用Lorentz线型所引起的。在用CO激光监测大气微量气体或污染气体时,必须根据实际大气状况,进行必要的水汽订正。     

测绘工程专业课程体系建设改革研究

专业建设是学科发展的基础,其建设内容一般包括人才培养模式与课程体系建设、师资队伍建设、产学研合作体制机制建设、实验实训条件建设、社会服务能力建设等,其中课程体系建设是专业建设的核心,是人才培养方案的精髓。本文以山东理工大学为例,在分析测绘行业岗位能力需求的基础上,构建了测绘工程专业的课程体系;提出了专业优质核心课程、双语教学课程、校企共建课程和实践教学课程的建设思路和建设成果。     

A Study of the Impacts of the Spatial Differences in Climate Engineering Programs on the Extreme Intensities of High-Temperature Events in China Under A 1.5°C Temperature Control Target

Based on the daily maximum temperature data and average temperature data prediction for the period ranging from 2020 to 2099 under the scenario of BNU-ESM climate engineering (G4 test) and non-climate engineering (RCP4.5), the regional differences in the extreme high-temperature intensities in China during the implementation of climate engineering programs (2020 to 2069) and after the implementation of those programs (2070 to 2099) were analyzed using a Weibull Distribution Theory. The results indicated the following: (1) The results of this study’s comparison between the two scenarios had shown that climate engineering had not fundamentally changed the spatial features of the high and low differentiations for the extreme high-temperature intensities with the different recurrence periods in China. It was found that in both scenarios, the extreme high-temperature intensities were characterized by the spatial differentiations of low-temperature intensities on the Qinghai-Tibet Plateau, and high-temperature intensities in the eastern and northwestern region; (2) This study’s comparison results of the two scenarios had indicated that the climate engineering processes during the two study periods could potentially help mitigate the extreme high-temperature intensities with different recurrence periods in China. Furthermore, the mitigation effects during the implementation period would be significantly higher than those after the implementation; (3) This study’s results of the comparison between the periods ranging from 2020 to 2069 and 2070 to 2099 under the proposed climate engineering scenarios suggested that there would be no strong rebounding of the extreme high-temperatures following the implementation of climate engineering programs, and the mitigation effects on the extreme high-temperature intensities during the implementation of the climate engineering programs would be significantly higher than after the implementation of the programs; (4) When comparisons were made of the changes of the average temperatures in China before and after the implementation of climate engineering programs, the results had shown that the average temperature in China had been reduced by at least 1.25℃ as a result of climate engineering, which would effectively alleviate the global warming trend, and could also be conducive to the realization of a temperature control target of 1.5℃ in accordance with the Paris Agreement.     

基于分层格网点密度法的车载LiDAR点云单株树信息提取及精度分析

本文基于分层格网点密度法实现了车载激光雷达(Light Detection And Ranging,LiDAR)点云数据中单株树信息的提取,并通过改变格网阈值研究了算法中出现的参数(格网大小、格网高度)以及点云数据中的噪声地物对单株树信息提取精度的影响.研究结果表明,采用分层格网点密度法,能有效地在点云数据中提取单株树的点云信息.     

重力场模型对Swarm卫星精密定轨的影响分析

采用星载GPS观测数据与简化动力学定轨方法,在方程中引入伪随机脉冲参数,从而实现对Swarm卫星的精密定轨. 详细分析了不同阶次的GOCO06s地球重力场模型对Swarm卫星简化动力学定轨精度的影响,对比了PGM2000a、EIGEN-2、EGM2008以及GECO重力场模型展开到100阶次时Swarm卫星解算的轨道精度. 结果表明:当GOCO06s地球重力场模型阶次处于30～100阶次时,Swarm-A、Swarm-B和Swarm-C卫星在径向、切向、法向上的定轨精度随着GOCO06s阶次的不断增加而越来越高,而在高于100阶次时,定轨精度基本稳定,且在各方向定轨精度优于3 cm. 此外,采用100阶次GECO、EGM2008和GOCO06s模型对三颗Swarm卫星进行定轨,解算的轨道精度相当,且要高于同阶次其他重力场模型的定轨结果.      

测绘地理信息类专业课程思政案例库建设与实践

为解决测绘相关专业教师在课程思政教学实践中素材挖掘能力不足和思政育人资源匮乏的问题,经广泛调研、研讨、素材收集和系统开发,建立了测绘地理信息类课程思政案例库。案例库依据测绘地理信息类专业课程思政矩阵图、思政案例-课程知识模块树状结构图,整合优化课程知识模块,按照测绘类、地理类、遥感类和计算机类4个课程类别分别建立了多模态课程思政案例库。采用B/S结构,以SQL Server为数据库建立了课程思政案例库管理系统,实现了案例输入、案例审核、案例查询、用户反馈和系统维护5个功能模块。应用于相关课程中,为实现专业课程思政教育起到了较大的推动作用,为培养具有民族自信、高度社会责任感和拥有良好职业核心素养的测绘地理信息人才提供了有力保障。