Viewing obesogenic advertising in children's neighbourhoods using Google Street View

The advertising of unhealthy food and beverages forms an important component of obesogenic environments. Such marketing to children is a key health determinant because of its impact on dietary preference and food purchasing behaviour. The location of outdoor advertising is important in exploring obesogenic environments and children's neighbourhoods. The aim of this study is to explore issues involved in the use of Google Street View to examine outdoor food and beverage advertising. The implications for using Google Street View in the context of neighbourhood built environment research and grass‐roots advocacy are discussed. The study was conducted within walkable distances from 19 primary and intermediate schools in Auckland, New Zealand, where “walkable” was defined as limited by 800 m road network boundaries, which are equivalent to school buffer boundaries. Google Street View allows for centrality of data collection, coding, and storage. However, challenges exist with the method because 727 (29.4%) of a total of 2,474 outdoor advertisements that were identified were not able to be categorised because images were unclear, not in English, blocked, or at angles where detail cannot be deciphered. Specific to outdoor advertising for food and beverages, the results presented here show that children are exposed to a significantly greater number of unhealthy advertising than other advertising, P=0.001, eta‐squared statistic (0.45) indicates a large effect size. Overall, the results show promise for the use of Google Street View in the study of obesogenic environments.     

Google Earth软件在考古探测中的应用评析

Google Earth软件因其独特的视角、先进的性能、广泛的用途、低廉的价格决定了其在考古工作中大有作为,在探测研究历史文化遗产上将起到不可替代的重要作用。探讨Google Earth软件在考古学中运用的优缺点,以便更好地开发考古专用软件。     

Drawing the line with Google Earth: the place of digital mapping outside of geography

The Te Kawa a Māui Atlas project explores how mapping activities support undergraduate student engagement and learning in Māori studies. This article describes two specific assignments, which used online mapping allowing students to engage with the work of their peers. By analysing student evaluations of these activities, we identify four aspects that benefit student engagement: mapping diversifies the learning experience; mapping promotes acquisition of a different skill set; online mapping allowed more open sharing of work and; mapping promotes place-based learning. Some students were ambivalent about the assignments, so mapping should only be used to support other learning objectives.     

Using GIS in an Earth Sciences field course for quantitative exploration,data management and digital mapping

Field courses are essential for subjects like Earth Sciences, Geography and Ecology. In these topics, GIS is used to manage and analyse spatial data, and offers quantitative methods that are beneficial for fieldwork. This paper presents changes made to a first-year Earth Sciences field course in the French Alps, where new GIS methods were introduced. Students use GIS in preparation to explore their research area using an elevation model and satellite images, formulate hypotheses and plan the fieldwork. During the fieldwork, a pilot group managed their field-observations using GIS and made digital maps. Students praise the use of quantitative digital maps in the preparation. Students made use of the available techniques during the fieldwork, although this could be further intensified. Some students were extra motivated due to the technical nature as well as the additional analytical possibilities. The use of GIS was experienced as a steep learning curve by students, and not all staff members are confident in supervising students using GIS, which calls for a sufficient preparation and training of both students and staff. The use of GIS adds abstract analyses and quantitative assessment, which is a complementary learning style to fieldwork that mostly focuses on practical skills.     

An Informational Right to the City? Code,Content, Control,and the Urbanization of Information

Henri Lefebvre talked of the “right to the city” alongside a right to information. As the urban environment becomes increasingly layered by abstract digital representation, Lefebvre's broader theory warrants application to the digital age. Through considering what is entailed by the urbanization of information, this paper examines the problems and implications of any “informational right to the city”. In directing Tony Benn's five questions of power towards Google, arguably the world's most powerful mediator of information, this paper exposes processes that occur when geographic information is mediated by powerful digital monopolies. We argue that Google currently occupies a dominant share of any informational right to the city. In the spirit of Benn's final question—“How do we get rid of you?”—the paper seeks to apply post‐political theory in exploring a path to the possibility of more just information geographies.     

Google Earth, GIS and stone-walled structures in southern Gauteng, South Africa

In South Africa, air photos were used in the 1960s and 1970s to plot distribution maps of pre-colonial stone-walled structures in order to study the peopling of this landscape. Different architectural styles of stone-walled structures were attributed to different cultures, who shared a mixed agricultural and pastoralist economic base and a cattle centered world-view. New technologies such as Google Earth satellite imagery as well as Geographic Information System software justify revisiting these structures as they facilitate more complex analyses of larger databases. The spatial analysis of remotely sensed settlement data from the Suikerbosrand Nature Reserve near Johannesburg shows significant changes in settlement patterns from dispersed homesteads to nucleated towns during the last two or three centuries before colonial times. These changes echo similar patterns reported in the neighboring North West Province, where they have been interpreted as a sequence of evolution in social, political and economic complexity. In the Suikerbosrand reserve climate change, conflict and other factors may have helped bring about the observed changes in settlement patterns.     

On the Margins: Enduring Pre-Modern Water Management Strategies In and Around the Registan Desert,Afghanistan

The Registan Desert in southern Afghanistan has, like most deserts, traditionally been regarded as a barren, hostile space, devoid of human occupation other than occasional nomad campsites and an isolated 11th-century a.d. fortress. Detailed analysis of a strip of high resolution satellite imagery available through Google Earth and stretching into the Registan has revealed the presence of over 800 hitherto unrecorded archaeological sites. Many of these sites relate to water management, and predate the modern era. The water installations form networks of sites which facilitated the opportunistic exploitation of grazing following periodic rains, desert farming, travel, trade and exchange over hundreds of years, if not longer. Extrapolating from this detailed analysis, we argue that thousands of other sites have yet to be discovered in the Registan. These water management networks warrant further study in the field and protection from neglect, construction, recreational four-wheel driving, and looting.     

Ground truthing of remotely identified fortifications on the Central Coast of Perú

Remote imagery, including freely available satellite images viewed in Google Earth^® and historic aerial photographs, was used to identify anomalies in a 25,000 km² macroregion encompassing 13 river valleys along the Peruvian coast. These anomalies, located atop hills and mountains, were hypothesized prehispanic fortifications. A sample of remotely identified anomalies was ground truthed in the Huaura and Fortaleza Valleys on the Central Coast of Perú. 140 positive anomalies were documented and assessed using a simple defensibility index. Our results significantly increase the number of fortifications identified in both valleys. We demonstrate the efficacy of this method for locating fortifications in a very large region to facilitate the systematic documentation of these durable indicators of warfare.     

Google earth and the archaeology of Saudi Arabia. A case study from the Jeddah area

Archaeologically, Saudi Arabia is one of the least explored parts of the Middle East. Now, thanks to Google Earth satellite imagery, a number of high-resolution ‘windows’ have been opened onto the landscape. Initial investigations already suggest large parts of the country are immensely rich in archaeological remains and most of those identified are certainly pre-Islamic and probably several thousand years old. Detailed interpretation of one ‘window’ east of Jeddah forms the basis for illustrating the richness of the heritage and how the satellite imagery can be exploited to shed important light on the character and development of the human landscape. Through this ‘window’ we set out a proposed methodology for future work and where it may lead.     

Defining the Early Bronze Age landscape: a remote sensing‐based analysis of Hafit tomb distribution in Wadi Andam,Sultanate of Oman

High‐resolution, freely available Google Earth software was successfully utilised in a remote‐sensing survey to locate and map thousands of Hafit tombs in a study area centring on Wadi Andam in the Sultanate of Oman. This dataset was refined for reliability with ground‐based fieldwork, and was analysed in the landscape using GIS software. The tombs are not randomly distributed across the study area; rather, the hydrology of the area appears to have been a dominant determining factor in the location of the graves. The structures were constructed in elevated, highly visible locations, possibly in an attempt to mark ownership of the landscape. The distribution of Hafit tombs is likely to provide some insight into the utilisation of the landscape in this period, with the evidence from Wadi Andam tentatively suggesting the presence of a nomadic pastoralist population. The development of this rapid, accurate and cost‐effective methodology has the potential to greatly facilitate the survey and analysis of Hafit tombs across the Oman peninsula.