空间认知导向下利用分层强化学习的最优路径规划

针对空间认知导向下模型驱动型路径规划和人们认知偏好多样性之间的矛盾,提出了一种基于分层强化学习的交互学习型路径规划方法。该方法将最优路径标准转换为路口处转向决策的瞬时奖励值,并通过预学习和实时学习两个阶段实现高效地发现总奖励值最大的最优路径策略。其中,预学习阶段自动发现子目标节点,并构建包含局部最优策略的子任务;实时学习阶段利用预定义策略实现高效的Q值更新,并根据Q值追溯最优路径。实验表明,该方法具有足够好的实时性和最优性。     

导航电子地图在移动设备中的应用

移动信息技术和地理信息系统的迅猛发展为野外工作提供了巨大潜在支持,而设计基于移动设备的地理数据可视化与决策系统又是十分必要的,导航电子地图系统是完成这一工作的基础。导航电子地图能够向用户提供野外导航和辅助决策支持。针对这个热点问题,本文通过分析典型的应用实例论述了目前基于移动设备的导航电子地图的应用现状,探讨其应用意义。     

中国入境旅游热点城市知名度认知的空间相关性

 旅游知名度是游客旅游决策的主控影响因素之一,也是旅游目的地获取潜在客源的重要手段。以我国入境旅游热点城市知名度为研究内容,从入境游客认知视角,在大样本入境游客实证调查资料的支持下,运用Moran指数和相关性检验,分析了我国入境旅游热点城市知名度认知的空间相关性,检验结果显示：我国入境旅游热点城市知名度认知具有正向空间自相关属性,其空间分布特征具有明显的类型与等级差异。相关性检验结果显示：入境旅游热点城市知名度认知存在地域相邻高度相关;沿海入境旅游热点城市知名度认知存在高度相关;入境旅游热点城市知名度认知具有明显的类型或等级相关;国际焦点关注的入境旅游热点城市认知与其它城市之间存在高度相关。     

虚拟地形环境仿真中的若干空间认知问题

虚拟地形环境仿真是数字地图支持下的一种新的空间认知工具。它们需要有新的认知理论和建模方法。本文从地图的空间认知、多感觉通道、人机交互技术、感觉不协调性、性能与评价等多方面进行了探讨     

(Re)Connecting spatial literacy with children’s geographies: GPS,Google Earth and children’s everyday lives

This article sets out an agenda for research that (re)connects research on children’s geographies and childhood studies with studies of spatial literacy. Research on children’s environmental cognition and, latterly, spatial literacy, has been artificially and problematically separated from the majority of research in childhood studies. Our fundamental aim in this article is to argue for – and to evidence – greater attention to how spatial literacy and children’s everyday lives are embedded in one another. To support our broader call for a synthetic research agenda, we draw on some more focussed, qualitative empirical material taken from a large-scale project about children’s mobilities and everyday lives in newly-built urban communities. Our analysis focuses upon children’s interpretations of Global Positioning Systems (GPS) tracks of their mobilities, set against a background of Google Earth imagery. In doing so, we showcase one suite of ways in which research on environmental cognition and children’s geographies might proceed together. We demonstrate that children not only displayed analytical skills (for instance, in relation to scaling effects and pattern recognition) but that many also exercised higher-level, critical analysis, especially in relation to errors on Google Earth outputs. Simultaneously, we interrogate the recursive articulation of a range of qualitative indicators of spatial literacy, with children’s everyday mobilities, routines, emotions and memories. The paper analyses how new conceptual languages and technologies being propounded by spatial literacy scholars could afford a more enriched understanding of key contemporary concerns for children’s geographers, and, recursively, what spatial literacy scholars might gain from engaging with (especially qualitative) research prompted by those concerns.     

我国洞穴旅游从业者安全认知研究

安全是洞穴旅游的生命线,是洞穴旅游活动正常开展的前提和保障。国内外多数洞穴旅游安全事故多起因于旅游从业者和游客自身安全认知欠缺。由于洞穴旅游从业者直接面对游客,是洞穴旅游安全事故的“第一道防火墙”,因此,从洞穴旅游从业者的角度对洞穴旅游安全认知进行研究就显得尤为重要。本文对我国17个旅游洞穴从业者的旅游安全认知开展问卷调查,运用统计分析和灰色关联分析对洞穴旅游从业者的安全认知及其差异进行分析,得到以下结论:（1）我国洞穴旅游从业者的总体安全认知度较高;（2）我国洞穴旅游从业者安全管理认知存在一定差异;（3）不同属性的洞穴旅游从业者安全认知度存在一定差异;（4）不同洞穴旅游从业者的安全认知度存在一定差异。基于洞穴旅游从业者的安全认知,可采取如下措施提高洞穴旅游安全管理水平:加强对洞穴旅游从业者的安全教育培训,提高安全意识;提升洞穴旅游景区（点）的安全管理水平,增强执行力度;建立健全洞穴旅游安全控制、预警和救援制度,切实保障旅游。      

Tasks,Strategies, and Cognitive Processes Associated With Navigational Map Reading: A Review Perspective*

All geographers use and may create maps in their professional activities. While perceived by some as merely tools to present spatial information, maps are actually complicated communication mechanisms. Many geographers spend tremendous amounts of time learning about verbal and written communication (how to speak, listen, read critically, and write effectively). But to many, one of the basic tools of geographic communication, the map, is a general source of unknown. Many previous papers have focused on how to create effective maps; this paper focuses on how people read and use navigation maps. Everyone completes map‐reading tasks, uses (often different) strategies, and processes information through cognitive processing. Geographers may benefit from understanding how they, as well as their map‐viewing public, process the information contained on their maps. This paper addresses terms and issues addressed in navigational map reading, specifically including tasks and strategies as well as the governing cognitive processes.     

正射影像上阴影和遮蔽的信息处理方法研究

分析了正射影像上阴影和遮蔽现象的利弊双重性特点 ,讨论了正射影像上阴影和遮蔽处理的原则 ,简单介绍了基于光照函数分析和基于色彩空间分析的彩色航空影像阴影信息增强方法以及基于整体变分模型和基于纹理匹配的影像缺损信息补偿方法。试验表明 ,所提出的正射影像上阴影和遮蔽的信息处理方法是有效的     

网格GIS的四重地理空间网格模型

在对网格与网格GIS深入分析的基础上，提出了网格GIS体系结构的四重地理空间网格模型，论述了其结构与特点，简述了网格GIS的技术体系，并对一个工程设计实例进行了网格化的分析。     

地理信息共享的理论研究框架

在分析人类认识自然界过程的基础上,建立了地理信息共享的理论研究框架,将支撑地理信息共享的理论划分成以空间认知理论和信息传输理论、空间概念研究、地理数据模型研究和地理信息标准化研究为主要研究内容的三层次结构,并对各理论基础进行了详细阐述。