空港经济产业布局模式及规划引导研究——以广州白云国际机场为例

从产业布局的角度探讨了国内近年比较热门的空港经济现象。首先从与机场最直接相关的人、物、资金和信息四大要素入手,剖析了空港经济主要产业类型及其特征,并分析了空港经济总体区位及其演变过程。在此基础上总结分析空港经济产业具有与发展阶段相吻合的增长极、点轴和网络三种布局模式,指出国内备受推崇的圈层布局是发展阶段不明确的理想模式,并尝试采用地理信息系统空间分析方法对产业布局的区位进行叠加分析。最后以广州新白云机场为例,探讨了周围花都区和白云区空港经济产业布局规划方案和措施。     

医院可达性评价与规划——以江苏省仪征市为例

医院作为公共服务设施的一个重要组成部分,为居民提供了必不可少的医疗机会,其空间分布以及可达性的优劣,直接影响到居民能接触到医院的机会和方便程度。把可达性的概念引入到医院规划中,利用Mapinfo公司的控件MapX和Borland公司的可视化编程语言Delphi,开发了基于时间最短的路径选择信息系统,生成了医院可达性的等时线图和医院服务范围图,通过该系统可直观的看到区域内任何一点到达同一级医院所花费的最短时间以及通过的路径。以江苏省仪征市的医院为例,运用该系统对医院的可达性进行了评价,并提出了医院的规划方案。     

多类型微博舆情时空分布关系的差异性及其地理规则

以新浪微博转发行为作为舆情时空分布的研究对象,分别选取4·20雅安地震事件代表重大社会舆情、凤凰古城收费事件代表公众生活舆情、郭某某事件代表网络热点舆情3类案例,总结不同类型微博舆情的时空分布特征及差异性,进而透视客观存在的地理规则。研究发现：①3类舆情事件微博转发量的时间分布分别表现为：长尾型、山峰型、多个时间段上的波浪型。②与时间轴对应的空间分布呈等级结构,信息扩散节点城市等级（转发量）结构还会表现出一定的空间伸缩变形或与距离衰减形成叠加关系,3类事件分别表现为：延续传统规律的“始终金字塔”结构、在相对较长时间过程中具有范围伸缩的“始终金字塔”结构、距离衰减影响下的“始终金字塔”结构。城市规模效应主导和距离摩擦阻尼效应影响构成网络信息空间分布的基本地理规则。③微博舆情时空分布的差异性与事件类型有关,并与不同微博用户的作用有关。微博用户的不平衡区域分布和其跨区域流动对信息空间分布产生直接影响。     

Our GIS is too small

GIScience and GISystems have been successful in tackling many geographical problems over the last 30 years. But technologies and associated theory can become limiting if they end up defining how we see the world and what we believe are worthy and tractable research problems. This paper explores some of the limitations currently impacting GISystems and GIScience from the perspective of technology and community, contrasting GIScience with other informatics communities and their practices. It explores several themes: (i) GIScience and the informatics revolution; (ii) the lack of a community‐owned innovation platform for GIScience research; (iii) the computational limitations imposed by desktop computing and the inability to scale up analysis; (iv) the continued failure to support the temporal dimension, and especially dynamic processes and models with feedbacks; (v) the challenge of embracing a wider and more heterogeneous view of geographical representation and analysis; and (vi) the urgent need to foster an active software development community to redress some of these shortcomings. A brief discussion then summarizes the issues and suggests that GIScience needs to work harder as a community to become more relevant to the broader geographic field and meet a bigger set of representation, analysis, and modelling needs.     

基于光谱成像的彩绘文物新应用与新方法

目前基于光谱成像的彩绘文物分析主要集中在颜料分析、信息增强、隐含信息挖掘等方面,分析方法主要采用遥感图像处理软件。针对文物数据专门分析方法研究尚显不足的问题,提出基于光谱成像的彩绘文物新应用与新方法。主要包括基于最小噪声分离(MNF)变换感知修复区域的新应用,利用感兴趣区域分析与融合挖掘彩绘文物隐含信息以及基于稀疏非负矩阵欠近似彩绘文物线稿提取的新方法。通过在唐墓壁画、彩绘泥塑以及手绘绢画上的实验,发现光谱成像可以有效感知修复区域,提出的新方法可以有效挖掘隐含信息以及提取线稿,对基于光谱成像的彩绘文物分析研究具有重要意义。     

Geographic information system‐based evaluation of spatial accessibility to maternal health facilities in Siaya County,Kenya

Maternal mortality is a major problem in middle‐income and low‐income countries, and the availability and accessibility of healthcare facilities offering safe delivery is important in averting maternal deaths. Siaya County, in Kenya, has one of the highest maternal mortality rates in the country—far more than the national average. This study aimed to evaluate geographic access to health facilities offering delivery services in Siaya County. A mixed‐methods approach incorporating geographic information system analysis and individual data from semi‐structured interviews was used to derive travel time maps to facilities using different travel scenarios: AccessMod5 and ArcGIS were used for these tasks. The derived maps were then linked to georeferenced household survey data in a multilevel logistic regression model in R to predict the probability of expectant women delivering in a health facility. Based on the derived travel times, 26 per cent (13,140) and 67 per cent (32,074) of the estimated 46,332 pregnant women could reach any facility within one and two hours, respectively, while walking with the percentage falling to seven per cent (3,415) and 20 per cent (8,845) when considering referral facilities. Motorised transport significantly increased coverage. The findings revealed that the predicted probability of a pregnant woman delivering in a health facility ranged between 0.14 and 0.86. Significant differences existed in access levels with transportation‐based interventions significantly increasing coverage. The derived maps can help health policy planners identify underserved areas and monitor future reductions in inequalities. This work has theoretical implications for conceptualising healthcare accessibility besides advancing the literature on mixed methodologies.     

The strategic logic of Islamic State information operations

Drawing on English and Arabic Islamic State (IS) communiqués produced by its central media units, wilayat information offices and broader supporter base, this study examines the strategic logic of IS information operations (IO). It argues that the overarching purpose of IS's IO campaign is to shape the perceptions and polarise the support of audiences via messages that interweave appeals to pragmatic and perceptual factors. Pragmatic factors—such as security, stability and livelihood—are leveraged in IS messaging by promoting the efficacy of its politico-military campaign and denigrating its enemies’ efforts via rational-choice (logic of consequence) appeals. Perceptual factors—which are tied to the interplay of in-group, Other, crisis and solution constructs—are leveraged via identity-choice (logic of appropriateness) appeals that frame IS as the champion of Sunni Muslims (the in-group identity), its enemies as Others complicit in Sunni perceptions of crisis, and IS as the only hope for solving this malaise. With this approach, IS seeks to resonate its message across a diverse ‘glocal’ constituency and supercharge supporters towards action. IS simultaneously targets its enemies with messaging that manipulates the inherent dualities underlying perceptual and pragmatic factors, vigorously counters criticisms and ‘baits’ opponents into ill-conceived IO responses.     

“丰满水电站”的殖民动机与客观效果

伪满洲国水力电气建设局及伪满洲电业株式会社修建的丰满水电站,同时也为日本全面掠夺中国东北地区的各种资源,提供了动力基础与工具。本文从规划与设置机构、设计与施工、工程投资与质量、奴役与压榨劳工、垄断与掠夺资源等几个层面,对伪满洲国时期的吉林丰满水电站进行了剖析。无论是从丰满水电站修建的历史过程,还是从主要动机及客观效果来看,这一水利工程都充分反映了日本企图长期霸占中国东北地区的侵略野心。     

论中国信息化的路径选择

十六大针对我国国情以及世界信息化的现实。提出了以信息化带动工业化的新型工业化道路。我国是在工业化尚未完成的条件下推进信息化的,要实现信息化带动工业化的目标,笔认为必须了解并正视中国信息化的初始条件,例如,生产力水平落后且呈现多层次性、产业结构不合理且第三产业的比例偏小、经济制度和经济体制亟待变迁、化变革不到位、政策法规不完善、教育水平低等。努力避免由于这些初始条件引起的路径依赖而产生的锁定。笔认为,为了避免锁定,作为政府应提高认识,关注长远与差别;重视发挥市场的主导作用;突出重点,发挥比较优势;扬长避短,处理好发展高新技术产业和传统产业的关系,资金技术密集型产业和劳动密集型产业的关系,信息技术的引进与开发的关系,只有这样才能使我国信息化进程顺利进行。