中国含盐盆地成钾矿集区划分与找钾前景概述——纪念中国找钾60年

对中国含盐盆地戍钾矿集区、成钾准矿集区及成钾预备矿集区进行划分。矿集区的特点为①有一个主要的钾盐矿床;②每个盆地都有数个,有的迭10个以上钾盐矿床,地质资源合计储量KCl都达亿t以上;③钾盐戍因机制、模式复杂多样。对中国找钾60年进行回顾,提出深部找钾及科学找钾：①练好业务,即熟悉掌握找钾各种最新物探、化探、岩矿测试分析技术。②熟悉掌握中外找钾理论和经验;③二次开发找盐钾文献、资料和标本;④深入剖析一个盐盆的野外地质工作和室内分析资料,整理研究,找出规律,提出找钾有利层位和地点。⑤多学科多技术结合,老中新组成团队,发挥协作精神;⑥选有最利成盐钾和油气共生盆地（钾矿集区）开展工作,如四川、陕西、新疆等地。并对中国找钾前景进行预测。     

量子化学方法研究氯代苯酚类化合物对水生物毒性的构效关系

对20个氯代苯酚类化合物进行了CNDO/2量子化学计算,讨论了化合物电子结构与其对水生物翻车鱼(Bluegill)、花鳉鱼(Guppy)、和虾(Shrimp)半致死量之间的关系,分别获得了表示其构效关系的三个线性方程,它们的显著性均远高于α=0.01水平。结果表明:氯代苯酚化合物苯环上碳原子的兀电荷之和(∑Qπ_R)越大苯环上碳原子的净电荷之和(∑Q_R)越大,或LUMO轨道能(E_(LUMO))越低,均使化合物对Bluegill和Guppy水生物的毒性增大;而化合物苯环上羟基邻位的碳原子的兀电荷布居(P_3)越大,同时HOMO轨道能E_(HOMO)越高,则化合物对Shrimp毒性也越大。据此,可预测氯代苯酚类化合物对上述三种水生物的毒性。     

基于CiteSpace中国海洋经济研究的知识图谱分析

利用CiteSpace可视化文献分析工具对1982~2013年CNKI总库中文核心期刊以及CSSCI中文社会科学引文数据库中海洋经济研究的3 441篇相关文献进行分析,绘制出研究热点、核心作者群及研究机构的知识结构图谱。结果表明：自中国海洋经济研究会成立以来,中国海洋经济研究主要围绕 “海洋经济”、“海洋产业”、“可持续发展”、“海洋资源”、“海洋开发”、“滨海旅游”等展开;韩增林、张耀光、郑贵斌、殷克东、李靖宇、徐志斌等是主要的发文作者;国家海洋局、中国海洋大学、辽宁师范大学和广东海洋大学为发文较多的机构;《海洋开发与管理》是海洋经济相关研究载文量最多的期刊,《经济地理》、《中国人口·资源与环境》、《地域研究与开发》、《资源科学》等是主要的载文核心期刊。除了传统的海洋经济研究视角下,区域海洋经济差异、海洋产业结构与布局及优化、海洋产业竞争力、海洋产业集群、现代海洋产业、海洋资源开发利用的可持续、人海关系的脆弱性、滨海旅游等的研究外,在新的国际和国内形势下,海洋经济相关理论、战略性新兴海洋产业研究、海洋经济可持续发展研究、及“一路一带”战略对海洋经济相关研究的新要求也是需要重点关注的方面。     

Subsurface target recognition in Utopia Planitia of Mars by Tianwen-1 FP-SPR simulation

As a cold and dry planet, Mars contains water resources in the form of water ice, so that the electromagnetic waves can be transmitted to the deep underground to get the information of the topography and subsurface geological structure. Subsurface penetrating radar(SPR) can be widely used in deep space exploration for a long time because of its non-destructive detection mode and its working characteristics not limited by visible light. It is an important type of equipment for detecting the subsurface structure of planets. Orbiter radar is mainly used in Mars exploration. However, because of its low resolution, it is difficult to describe the near surface structure, so there is a lack of radar data which can reflect the shallow information. In this paper, a three-dimensional near surface model of Utopia Planitia on Mars is established. In order to make the simulation results more reasonable, the key factors such as topographic relief, subsurface rocks and water ice, and the variation of dielectric constant in different layers are taken into account. Then the full polarization forward modeling is carried out by using the three-dimensional finite-difference time-domain method. The acquired full polarimetric subsurface penetrating radar(FP-SPR) data with noise is preprocessed and further processed by Pauli decomposition. The underground reflection can be picked up more clearly from the Pauli decomposition results. This work is helpful to identify more details of subsurface structures and provides a reference for the measured data in the future.     

AR（P）参数估计协方差方法与其改进型方法的对比研究

定性分析协方差方法及其改进型在ＡＲ（Ｐ）参数估计中的应用，提供了一种估计参数的计算机上机流程图，比较了协方差方法及其改进型谱估计结果。     

结构主动控制系统时间滞后测量与补偿方法

本文研究了结构主动控制系统时间滞后产生的原因,利用作者建立的结构主动控制系统进行了系统时间滞后测量方法的研究,测量得到了该系统时间滞后的具体数值,在此基础上,研究了时间滞后对控制系统的影响,提出了结构主动控制系统时间滞后的三种补偿,即移相法,泰勒级数展开法和预估状态向量法,通过主动控制试验证了时间滞后补偿方法的有效性。     

Analysis of city centrality based on entropy weight TOPSIS and population mobility: A case study of cities in the Yangtze River Economic Belt

Based on statistical data and population flow data for 2016,and using entropy weight TOPSIS and the obstacle degree model,the centrality of cities in the Yangtze River Economic Belt(YREB)together with the factors influencing centrality were measured.In addition,data for the population flow were used to analyze the relationships between cities and to verify centrality.The results showed that:(1)The pattern of centrality conforms closely to the pole-axis theory and the central geography theory.Two axes,corresponding to the Yangtze River and the Shanghai-Kunming railway line,interconnect cities of different classes.On the whole,the downstream cities have higher centrality,well-defined gradients and better development of city infrastructure compared with cities in the middle and upper reaches.(2)The economic scale and size of the population play a fundamental role in the centrality of cities,and other factors reflect differences due to different city classes.For most of the coastal cities or the capital cities in the central and western regions,factors that require long-term development such as industrial facilities,consumption,research and education provide the main competitive advantages.For cities that are lagging behind in development,transportation facilities,construction of infrastructure and fixed asset investment have become the main methods to achieve development and enhance competitiveness.(3)The mobility of city populations has a significant correlation with the centrality score,the correlation coefficients for the relationships between population mobility and centrality are all greater than 0.86(P<0.01).The population flow is mainly between high-class cities,or high-class and low-class cities,reflecting the high centrality and huge radiating effects of high-class cities.Furthermore,the cities in the YREB are closely linked to Guangdong and Beijing,reflecting the dominant economic status of Guangdong with its geographical proximity to the YREB and Beijing's enormous influence as the national political and cultural center,respectively.     

暗挖隧道注浆-降压联合地下水控制技术

动水条件下承压水的注浆止水及加固问题,是暗挖隧道地下水控制的重要难题,在浆液配比、注浆参数等方面的设计施工经验较少。以某地铁区间联络通道的地下水控制工程为背景,结合该通道地质条件复杂、承压水头高、突涌水量大等施工现状,基于注浆-降压联合的地下水控制思路,探索了高承压水头条件下的WSS双液注浆止水施工技术,并通过现场探测和地面沉降监测研究其止水加固效果。结果表明,采用注浆-降压联合的地下水控制及加固方案,在显著承压性的地下水含水层注浆止水加固中取得了良好的效果,既能够保证地下通道的注浆过程顺利进行,又能确保地下水治理效果,并遏制围岩的变形发展,各部位变形均满足控制指标。     

一种非量测相机近景影像外方位元素解算方法

本文提出了一种角椎体法和共线方程法联合解算非量测相机影像外方位元素的方法。工程应用证明该方法求解像片的外方位元素具有计算速度快、收敛性强、计算精度高等优点。     

基于多目标进化算法的地图注记自动配置技术的研究

在计算机数字制图过程中,地图注记的配置直接影响数字地图的效果.针对地图注记配置过程中两个或多个注记之间冲突处理的问题,本文参照格式塔原则,从地图注记的易读性、位置优先性、形状相似性、地物关联性四个格式塔因子出发对地图注记的候选位置进行评价;同时根据多目标决策理论,用进化算法模拟地图注记的自动配置过程,实现了地图注记自动配置的全局优化.