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Mapping mountains
Mountains appear in the oldest known maps yet their representation has proven a notoriously difficult challenge for map makers. In this essay, Ernesto Capello surveys the broad history of relief representation in cartography with an emphasis on the allegorical, commercial and political uses of mapping mountains. After an initial overview and critique of the traditional historiography and development of techniques of relief representation, the essay features four clusters of mountain mapping emphases. These include visions of mountains as paradise, the mountain as site of colonial and postcolonial encounter, the development of elevation profiles and panoramas, and mountains as mass-marketed touristed itineraries.
P_MAP
Special Forum Introduction: Global Huck: Mapping the Cultural Work of Translations of Mark Twain’s Adventures of Huckleberry Finn
Editors' Introduction
Journal Article
3D engine design for virtual globes
\"The first half of the book details the design of a modern 3D graphics engine: a shader-based architecture with an abstract rendering API fed by hierarchical culling and state sorting. The second half of the book upgrades the generic 3D engine to a virtual globe engine by adding high precision rendering, accurate globe rendering, vector data rendering, out-of-core rendering, and terrain rendering. The algorithms and techniques in the book are not tied to any particular programming language or rendering API but they will provide concrete examples in C#, OpenGL, and GLSL\"--Provided by publisher.
Book
Urban Flood Mapping Using SAR Intensity and Interferometric Coherence via Bayesian Network Fusion
Synthetic Aperture Radar (SAR) observations are widely used in emergency response for flood mapping and monitoring. However, the current operational services are mainly focused on flood in rural areas and flooded urban areas are less considered. In practice, urban flood mapping is challenging due to the complicated backscattering mechanisms in urban environments and in addition to SAR intensity other information is required. This paper introduces an unsupervised method for flood detection in urban areas by synergistically using SAR intensity and interferometric coherence under the Bayesian network fusion framework. It leverages multi-temporal intensity and coherence conjunctively to extract flood information of varying flooded landscapes. The proposed method is tested on the Houston (US) 2017 flood event with Sentinel-1 data and Joso (Japan) 2015 flood event with ALOS-2/PALSAR-2 data. The flood maps produced by the fusion of intensity and coherence and intensity alone are validated by comparison against high-resolution aerial photographs. The results show an overall accuracy of 94.5% (93.7%) and a kappa coefficient of 0.68 (0.60) for the Houston case, and an overall accuracy of 89.6% (86.0%) and a kappa coefficient of 0.72 (0.61) for the Joso case with the fusion of intensity and coherence (only intensity). The experiments demonstrate that coherence provides valuable information in addition to intensity in urban flood mapping and the proposed method could be a useful tool for urban flood mapping tasks.
Journal Article
Mapping in a digital world
\"In this amazing title, readers will explore the possibilities new developments in technology are opening up for making maps. Mapmakers are using satellite data to map the locations of people and objects on Earth, making video maps using the Internet to show wind and weather systems, and creating specialized maps that show human behavior. Computer game technology, such as Minecraft, is even being used to map real places.\"--Provided by publisher.
Book
PREFACE
Martin Woods provides a historico-political analysis of the text on Joan Blaeu's 1659 wall-map Archipelagus Orientalis, Sive Asiaticus, a unique and recently-restored copy of the 1663 state of which is held by the National Library of Australia. The Society's annual conference \"Mapping the Pacific\" will be held in late August (cross fingers!) at the State Library of NSW, as well as via Zoom for those unable to travel to Sydney. Keep updated on the exact dates, programme etc., at the conference website https://www.sl.nsw.gov.au/research-and-collections/ research-and-engagement/mappingpacific-conference Your committee is also organising a quarterly series of one-hour webinars this year.
Journal Article
Concept mapping, mind mapping and argument mapping: what are the differences and do they matter?
In recent years, academics and educators have begun to use software mapping tools for a number of education-related purposes. Typically, the tools are used to help impart critical and analytical skills to students, to enable students to see relationships between concepts, and also as a method of assessment. The common feature of all these tools is the use of diagrammatic relationships of various kinds in preference to written or verbal descriptions. Pictures and structured diagrams are thought to be more comprehensible than just words, and a clearer way to illustrate understanding of complex topics. Variants of these tools are available under different names: \"concept mapping\", \"mind mapping\" and \"argument mapping\". Sometimes these terms are used synonymously. However, as this paper will demonstrate, there are clear differences in each of these mapping tools. This paper offers an outline of the various types of tool available and their advantages and disadvantages. It argues that the choice of mapping tool largely depends on the purpose or aim for which the tool is used and that the tools may well be converging to offer educators as yet unrealised and potentially complementary functions (HRK / Abstract übernommen).
Journal Article
GPS and computer maps
Explains how the GPS, or Global Positioning System, works. It discusses how and why the system was developed and how various devices use it. It also covers online map systems, such as Google Maps and MapQuest. The book deals with zooming in and out on such maps. It even explores the advantages and disadvantages of computer and GPS maps in comparison to paper maps.
Book
Another Look at a Proposed Quartic Chaotic Mapping
In this paper, we take another look at a quartic chaotic mapping proposed before, in which two cases were left unconcerned. For these two cases, we could form a quartic mapping easily almost as same as we did before. Analysis illustrates that the mapping formed for the two cases demonstrates different chaotic properties: one with vast chaotic area, the other with broad periodic area. That is to say, they could be applied to anti-control of chaos and control of chaos, respectively. Both cases are quite efficient, and easy to use.
Journal Article