我们说什么?我们对谁去说?——在美国地理学家协会1987年年会上的讲话

地理学家的演讲与他们运用文字、图象所作的交流同样值得重视.美国的地理学可以通过下述途径得到加强,即围绕地点、地区和全球联系发展实质性演讲,促进自然地理的发展,恢复地理生态的传统.地理信息系统(geographic information systems)对于完成上述任务,对于改进地理学科以满足不断出现的需要,将是一个非常有用的工具.如果我们能够避免自己拆自己的台,避免不现实的空想,避免玩弄语言技巧,而是坚持在大学里进行高质量的教学,并在教师和从事地理实践工作的人员之间开展学术交流,那么地理学将会变得更加有效.我们有一个前所未有的机会来帮助改进美国的中小学地理教育.     

A Preliminary Investigation into the Challenges of Learning GIS in Interdisciplinary Research

A geographic information system (GIS) can be a valuable research tool, helping scientists understand location and bridge the gaps between subjects in interdisciplinary research (IDR), which has been promoted for its real-world solutions. However, a GIS can be difficult to use and may require understanding of a number of concepts as well as tools and technology. This complexity is compounded by additional challenges commonly encountered in IDR. This paper examines some of the challenges facing learners of GIS in IDR projects, with a particular focus on the appropriateness of current teaching methods in this context.     

地理信息系统支持的兴隆洼文化手工业生产专业化研究

对考古遗址内遗物的空间分布进行分析是研究手工业生产专业化的重要手段。将兴隆洼文化南台子、白音长汗遗址发掘资料数字化,利用地理信息系统软件对遗物分布特征进行分析,显示出遗址内石器和石料的分布具有不均衡性,这说明初级的专业化生产可能在中国的新石器时代中期即已发生。     

Assessment of the Lines of Torres Vedras defensive system with visibility analysis

A method to assess the coherence of defensive systems based on the individual and combined visual coverage of fortifications is presented. The case study is the complex fortification system of Lines of Torres Vedras, around Lisbon, Portugal, activated in the first decade of the 19th century to halt the French armies of Napoleon in the Peninsular War. As messages between fortifications are known to have been exchanged visually by semaphore, GIS-based viewshed calculations enabled the assessment of the system's coherence and the exploration of how the undocumented communication with the defensive forces' headquarters in Lisbon might have been achieved. Results show that the defensive system with its two lines was highly effective per se with respect to the visual coverage of the terrain and the exchange of messages between fortifications, but it could have been improved with minor changes to the location of communication devices. It is also found that communication with the headquarters in Lisbon was not adequate, suggesting that additional devices were needed.     

基于GIS的区域经济分析与决策初步研究

GIS技术能为区域经济分析直接提供一种交互式的、可视化的决策支持,已广泛应用于地方、区域和国家各级水平的经济分析、规划决策过程中。在本文中,作者首先对区域经济分析决策的各种方法进行了必要的分析,说明了在区域经济分析中GIS所能提供的技术支持,然后对建立一个基于GIS的区域经济分析与决策信息支持系统进行了初步研究,并举例说明了GIS技术在经济分析与决策中的应用。     

The Evolution of Population Distribution on the Iberian Peninsula: A Transnational Approach (1877–2001)

Abstract

Surpassing the national perspective usually adopted, the authors confirmed the existence of a pattern of population distribution common to the whole Iberian Peninsula in the long run. This pattern is clearly associated with geographical factors. These variables seem to have more weight in explaining changes between 1877/78 and 1940 than in the period from 1940 to 2001. The observation of the cross-border region has shown that proximity to the frontier has not generated any distinct pattern of population density on either side of the boundary line. The spatial coherence of the observed phenomena throughout the Peninsula and of its evolution, independent of the border between states, reinforces the importance of geographic factors in their explanation. At the same time, this verification opens up new issues related to the effect of national political and economic policies.     

Fragments from many pasts: layering the toponymic tapestry of Milan

In the recent literature on the cultural politics of naming, toponyms and street names are increasingly read within the wider social–historical context upon which naming is contingent. In this perspective, naming is often seen as an act of power and a way to inscribe an ideological discourse into the landscape. In this article, we analyze the street names currently inscribed in the historical center of the Italian city of Milan, Italy as a reflection of its long and contested social and political history. Fragments of all the different toponymic regimes and hegemonic discourses that took over one after the other over time have remained inscribed in Milan’s street network, originating a complex tapestry in which different pasts revive and conflicting ideologies co-exist. In this context, we examine the role Geographical Information Science (GIScience) methods and technologies play in quantifying, revealing, and visualizing the spatial patterns of downtown Milan’s toponymic texture at the urban scale and at the scale of the six historical neighborhoods.     

Doing Independent Overseas Fieldwork 1: Practicalities and pitfalls

This article explores issues of scalability and sustainability in distance learning. The authors kept detailed records of time they spent teaching a course in geographic information science via the World Wide Web over a six-month period, during which class sizes averaged 49 students. The authors also surveyed students' satisfaction with the distance learning course through ratings and open-ended questions. Findings are compared with similar data collected a year earlier, when class sizes associated with the same distance learning course averaged 18 students. In response to the increase in average class size by a factor of 2.7, the authors' course-related workloads increased by a factor of about 2.5 (from 47.5 hours to 116.7 hours total). Analyses of student feedback suggest that student satisfaction with the course was high overall and suffered no significant decline as a result of increased instructional efficiency.     

THE KNIGHTS OF LABOR DATA-BANK

Several countries have made large investments in building historical Geographical Information Systems (GIS) databases containing census and other quantitative statistics over long periods of time. Making good use of these databases requires approaches that explore spatial and temporal change. The authors use a variety of visualization and spatial analysis techniques to explore population change in Ireland during and after the Great Famine of the late 1840s. Importantly, the techniques allow differences over space and time to be explored, thus stressing the diversity between places, rather than making all places appear the same, a common criticism of many statistical approaches. The authors demonstrate the potential of these techniques to explore geographical and temporal variations in large quantitative GIS datasets.     

An island-wide assessment of the chronology of settlement and land use on Rapa Nui (Easter Island) based on radiocarbon data

The archaeological landscape on Rapa Nui (Easter Island) contains a palimpsest of surface archaeological features reflecting a long history of settlement and land use. The popular narrative of societal collapse prior to European contact relies on chronometric data from the late pre-European contact period and also cites major settlement shifts as evidence for societal collapse and socio-political reorganization. This paper explores the archaeological evidence for proposed changes in settlement by assessing the spatial and temporal distribution of radiocarbon determinations collected from archaeological and landscape contexts. A corpus of over 300 determinations is placed into an island-wide GIS database and analysed. The results of this study suggest that Rapa Nui settlement and land use exhibit continuity rather than punctuated, detrimental change during the late pre-European contact period.