ArcGIS证据权模型在铜矿成矿预测中的应用 ——以博格达-哈尔里克成矿带为例

本文选择博格达-哈尔里克一带作为研究区,从区域成矿地质背景入手,鉴于该地区已知成型铜矿床较少,成矿规律研究薄弱,故作者采用ArcGIS平台下的证据权模型(WofE),以数据驱动方式为主,从断裂构造、沉积岩相与建造、火山岩建造、侵入岩岩性等方面,以学生化反差S(C)作为有利因子衡量指标,对各控矿因素进行影响程度分类,利用加权逻辑斯回归模型计算成矿后验概率,根据后验概率值的大小进行成矿远景区的圈定和分级,在博格达-哈尔里克成矿带内共圈定7个成矿远景区。最后结合区域化探资料进行了验证,结果显示所圈定的铜矿成矿远景区内化探异常明显,与Cu元素异常套合较好,说明ArcGIS证据权模型能很好地为区域矿产预测提供良好的技术支撑,为研究区铜矿找矿方向提供理论依据,文中所总结的基于ArcGIS平台的证据权计算方法流程也为区域矿产预测提供了方法借鉴。     

广州外来研究生岭南文化融入研究

作为高校密集地之一,广州每年都有大量来自全国各地的学生来此读研深造。异地求学的过程,同时也是一个文化融入过程。首先采用语义集调查法,明晰外来研究生对岭南文化的3个基本审视基点：高消费经济、学术氛围差、竞争压力大。在此基础上,通过问卷调查对外来研究生群体对岭南文化的认知评价和适应范式进行了逐一剖析,总结得出其在岭南文化融入进程中表现出倾向于主动吸纳、自觉内化和行为仿同的融入特征,并呈现出较为理想的积极共存文化融入型态这一研究结论。     

大学生消费行为的微观区位选择特征分析

消费行为是人类社会中的一种复杂行为,其形成的活动空间也呈现出复杂性和多样性的特点。基于消费行为地理学的研究,以消费行为理论、微观区位理论等为依据,对大学生消费行为的微观区位选择进行了初探,以问卷调查得来的第一手资料为基础,对嘉应学院学生消费行为的微观区位选择的特征进行了探讨。通过研究发现,大学生消费行为具有明显的空间圈层结构,认知距离在其选择消费区位时起到了非常重要的作用。     

Does the High School Geography Experience Influence Enrollment in University Geography Courses?

The literature suggests that owing to profound difficulties with high school geography curricula, teachers play a vital role in stimulating student interest and in providing a platform for continuation in the study of geography at university. Yet, with little empirical evidence offered in support, it is unclear why students select geography at university and if their high school experience informs their decision. Through a survey of students enrolled in an introductory geography course at an Ontario university, this research questions the relationship between students' high school experience and their enrollment in the course and ponders the implications for the health of the discipline.     

Suggestions for Low-Cost Equipment for Physical Geography I: Laboratory Equipment

Abstract

Fieldwork and laboratory experiences have always been important components of physical geography education, at universities as well as secondary schools. However, the rising cost of necessary equipment and dwindling education budgets of most universities and secondary schools have placed such experiences in crisis. This is the first of two papers that present lab- and field-based items we have designed and built for student research. The equipment is easy to construct and made from low-cost materials like PVC plumbing pipe. Photographs, construction notes, and costs have been included for each of the pieces of equipment, as well as measured schematics for the more complex items.     

Useful Products of the Century Plant a Lesson on Mexico

Creating opportunities for students to actively apply hazards theory to real-life situations is often a challenge in hazards geography courses. This article presents a project, the Jocko Lakes Fire Project, that implemented learning strategies to encourage students to be active in wildfire hazards research. Wildfire hazards stand out as an increasing threat to communities in forested areas given current and projected rates of urbanization, the growing concentration of wealth in hazard-prone areas, the increasing costs of forest wildfire reduction, and climate change. Components of the project involved students in problem definition and the articulation of a research plan; identifying and collecting relevant data; and analyzing and documenting the wildfire hazard event. The student-based evaluation of the project and its outcomes highlights the ways in which this approach can increase understanding of local hazard scenarios, familiarity with relevant theory, geographical knowledge, and skills in research.     

The Valley of Chin lee

Abstract

This paper is concerned with an instructional design for the teaching of landform geography. A sequence of organizational problems is examined and suggestions made from a previous study of the southern peninsula of Michigan. Considerations of grid design, selection of terrain parameters, and the problem of regional definitions are assessed from both the historic point of view and the results of the pilot study. Of three basic landform parameters, i.e., average elevations, local relief, and average slope, the single criterion of elevation is advocated for the detection of regional homogeniety over large topographic surfaces. However, the use of local relief as a measure of surface texture is proposed for the delineation of individual terrain compartments. Suggested for all age levels above the elementary school, this project is a feasible design for an oft-neglected aspect of physical geography.     

建成环境对步行通勤通学的影响——以中国香港为例

步行是一种重要的交通方式,也是体力活动的重要组成部分。然而,现代城市居民步行频率持续下降,相应地带来体力活动水平的持续降低,伴随着肥胖等慢性非传染病广泛蔓延,值得警惕。西方很多研究证实了建成环境(常以“3D”或“5D”等模型刻画)对步行行为的影响。基于西方的结论对于中国香港、北京和上海等具有与西方城市大相迥异的建成环境的城市是否适用?不同的人群由于具有不同的社会经济属性和生活节奏、习惯,其步行行为受建成环境的影响在方向、强度上是否存在差异?为解决上述问题,论文以香港为案例地,以职员和学生2类人群的步行通勤通学行为为研究对象,利用香港人口普查数据、Open Street Map数据以及中原地图数据等,采用传统的线性回归和空间计量模型进行分析,发现：①通勤通学距离是影响职员和学生步行通勤通学行为的最重要变量;②以“5D”模型刻画的建成环境对香港居民步行通勤通学行为的影响,与西方情境下的结论存在一定的差异,如,在香港,距地铁站的距离与职员和学生步行通勤比例相关性均不显著;③建成环境对步行通勤通学行为的影响,在职员与学生两类人群之间在方向和强度上存在显著差异。例如人口密度与职员步行通勤比例负相关,但与学生步行通学比例正相关。研究凸显了在“建成环境-交通行为”关系研究中情境(context)和人群区分(segmentation)的重要性。     

学号关联数据在工程测量实践教学中的应用研究

为提高测量实训实效,本文以平面点位放样为切入点,探讨了学号关联数据表的编制及优点.其应用实验表明,学号关联数据法能有效调动学习积极性,减少抄袭、拷贝现象,使成绩评定更加客观公正,提高实训实效.问卷调查表明该方法师生认可度高,在测量实践教学中有一定推广价值.     

北京地区突发性地质灾害易发区划及危险度评价

本文在认真分析北京地区地质环境的主要特征及地质灾害发育现状基础上,对泥石流、采空塌陷以及崩滑塌等突发性灾害的发育特征、分布规律及其主要影响因素进行了深入地分析、研究和探讨。采用袭扰系数法,对区内突发性地质灾害的易发程度进行了综合评价预测,圈定出突发性地质灾害高易发区、中易发区、低易发区和不易发区。采用模糊综合评判模型,对影响地质灾害演变趋势的降雨条件、人类工程活动、地震活动以及区域岩组结构等因素进行了综合评判,并依据突发性地质灾害的易发区划结果及其主要影响因素的综合评判结果,对其演变的危险程度进行了评价,将北京地区划分出突发性地质灾害高风险区、中风险区以及低风险区。这对政府相关部门制定减灾防灾、资源开发、环境整治、经济建设和社会发展等规划具有一定的参考作用。