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1. Comparing Directed and Weighted Road Maps

   https://doi.org/10.1007/978-3-319-89593-2_4  

   Bittner, Alyson; Fasy, Brittany Terese; Grudzien, Maia; Hajra, Sayonita Ghosh; Huang, Jici; Pelatt, Kristine; Thatcher, Courtney; Tumurbaatar, Altansuren; Wenk, Carola (July 2018, Association for Women in Mathematics series)

   With the increasing availability of GPS trajectory data, map construction algorithms have been developed that automatically construct road maps from this data. In order to assess the quality of such (constructed) road maps, the need for meaningful road map comparison algorithms becomes increasingly important. Indeed, different approaches for map comparison have been recently proposed; however, most of these approaches assume that the road maps are modeled as undirected embedded planar graphs. In this paper, we study map comparison algorithms for more realistic models of road maps: directed roads as well as weighted roads. In particular, we address two main questions: how close are the graphs to each other, and how close is the information presented by the graphs (i.e., traffic times, trajectories, and road type)? We propose new road network comparisons and give illustrative examples. Furthermore, our approaches do not only apply to road maps but can be used to compare other kinds of graphs as well. 

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2. Mobilizing Benefit Sharing through Transportation Infrastructure: Informal Roads, Extractive Industries and Benefit Sharing in the Irkutsk Oil and Gas Region, Russia.

   Kuklina V., Petrov A. (February 2020, Resources)

   Road infrastructure development is an existing, but not a frequent element of extractive industry benefit-sharing frameworks in remote northern regions. However, it is often at the center of extractive activity and inflicts major impact on environment and communities. This paper examines the benefits and impacts derived from development of informal roads, i.e., vehicular roadways beyond the current publicly-governed road networks constructed, maintained and/or used by various entities and individuals based on private, special purpose and/or informal practices and regulations. Based on several field studies, GIS analysis of road networks and examination of secondary sources, the article investigates the use of informal roads as a form of benefit-sharing and details their impact on mobilities, environment and livelihoods of local and indigenous communities in the Irkutsk Oil and Gas region, Russia. We argue that construction, maintenance and use of the industry-built roads can be a part of benefit-sharing agreements, albeit mostly semi-formal and negotiated. The gains and problems stemming from ‘trickle-down’ (i.e., unintended) effects of the road networks are the most significant. The community-relevant implications of informal roads go far beyond immediate impacts on surrounding environment, but deeply affect subsistence activities, mobility, food security, personal safety and even consumer preferences of the indigenous residents. 

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3. Mobilizing Benefit-Sharing Through Transportation Infrastructure: Informal Roads, Extractive Industries and Benefit-Sharing in the Irkutsk Oil and Gas Region, Russia

   https://doi.org/https://doi.org/10.3390/resources9030021  

   Kuklina V., Petrov A. (February 2020, Resources)

   Road infrastructure development is an existing, but not a frequent element of extractive industry benefit-sharing frameworks in remote northern regions. However, it is often at the center of extractive activity and inflicts major impact on environment and communities. This paper examines the benefits and impacts derived from development of informal roads, i.e., vehicular roadways beyond the current publicly-governed road networks constructed, maintained and/or used by various entities and individuals based on private, special purpose and/or informal practices and regulations. Based on several field studies, GIS analysis of road networks and examination of secondary sources, the article investigates the use of informal roads as a form of benefit-sharing and details their impact on mobilities, environment and livelihoods of local and indigenous communities in the Irkutsk Oil and Gas region, Russia. We argue that construction, maintenance and use of the industry-built roads can be a part of benefit-sharing agreements, albeit mostly semi-formal and negotiated. The gains and problems stemming from ‘trickle-down’ (i.e., unintended) effects of the road networks are the most significant. The community-relevant implications of informal roads go far beyond immediate impacts on surrounding environment, but deeply affect subsistence activities, mobility, food security, personal safety and even consumer preferences of the indigenous residents. 

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4. Differences between gridded population data impact measures of geographic access to healthcare in sub-Saharan Africa

   https://doi.org/10.1038/s43856-022-00179-4  

   Hierink, Fleur; Boo, Gianluca; Macharia, Peter M.; Ouma, Paul O.; Timoner, Pablo; Levy, Marc; Tschirhart, Kevin; Leyk, Stefan; Oliphant, Nicholas; Tatem, Andrew J.; et al (December 2022, Communications Medicine)

   Abstract Background Access to healthcare is imperative to health equity and well-being. Geographic access to healthcare can be modeled using spatial datasets on local context, together with the distribution of existing health facilities and populations. Several population datasets are currently available, but their impact on accessibility analyses is unknown. In this study, we model the geographic accessibility of public health facilities at 100-meter resolution in sub-Saharan Africa and evaluate six of the most popular gridded population datasets for their impact on coverage statistics at different administrative levels. Methods Travel time to nearest health facilities was calculated by overlaying health facility coordinates on top of a friction raster accounting for roads, landcover, and physical barriers. We then intersected six different gridded population datasets with our travel time estimates to determine accessibility coverages within various travel time thresholds (i.e., 30, 60, 90, 120, 150, and 180-min). Results Here we show that differences in accessibility coverage can exceed 70% at the sub-national level, based on a one-hour travel time threshold. The differences are most notable in large and sparsely populated administrative units and dramatically shape patterns of healthcare accessibility at national and sub-national levels. Conclusions The results of this study show how valuable and critical a comparative analysis between population datasets is for the derivation of coverage statistics that inform local policies and monitor global targets. Large differences exist between the datasets and the results underscore an essential source of uncertainty in accessibility analyses that should be systematically assessed. 

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5. A Chain Reaction of Infrastructural Development and Its Local Social Consequences: The Case of the Western Section of the BAM.

   https://doi.org/10.24412/1026-8804-2021-1-125-145  

   Kuklina, Vera V; Krasnoshtanova, Natalia Ye (January 2021, Rossiâ i ATR)

   In this paper we propose to discuss the issues of a chain reaction caused by the development of different types of transport infrastructure. The issues of infrastructural projects impact on local communities have long been widely discussed by social researchers. However, the northern and Arctic regions remain less studied in this regard while the situation there is more complex, especially at the intersections of various types of transport infrastructure. The problems of interaction between different kinds of infrastructure are especially manifested in the regions of extractive development, such as the north of the Irkutsk Region and the Republic of Buryatia. The materials for the analysis were obtained as a result of field studies in the north of the Irkutsk Region and the Republic of Buryatia in 2016, 2017, 2019, and 2020, as well as on the basis of the analysis of satellite data and maps of the regional infrastructure development. The construction of the Baikal-Amur Mainline and later oil and gas pipelines became an impetus for the development of other types of infrastructure, not only in the oil and gas extractive activities but also in logging. However, limited access to the pipeline and oil service roads has caused conflicts between the industrial companies and the local population. Local hunting trails are at the lowest level in such a hierarchy and are often destroyed and blocked by infrastructure development. A deeper and more detailed analysis of the social consequences of infrastructural development contributes to an understanding of the hierarchies of power that exist in Russia. 

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