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检索条件"丛书名=Lecture Notes in Geoinformation and Cartography"

共 1042 条记录，以下是391-400 订阅

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Educational Aspects of Crowdsourced Noise Mapping 28th

Educational Aspects of Crowdsourced Noise Mapping

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28th International Cartographic Conference (ICC)

作者： Podor, Andrea Zentai, Laszlo Univ Obuda Alba Regia Tech Fac Inst Geoinformat Szekesfehervar Hungary Eotvos Lorand Univ Dept Cartog & Geoinformat Budapest Hungary

ISBN: (纸本)9783319573366;9783319573359

Examined here is a project-based method for integrating of crowdsourced noise mapping in the teaching of geoinformatics. Practical examples of a GIS course are designed to use crowdsourced noise measurements in the curricula. The approach showed students how GIS integrates data acquisition, processing, analyses and visualization. Implementing noise measurement tasks in the curricula also helped students gain skills in detecting and resolving errors. The teacher acts as a mentor during the classes in order to help students acquire knowledge in a way that best suits them. A project like this is helpful because it makes the problem easily understandable and offers several cartographic visualization methods that the students can test and compare in practice. In addition, we found that the quality and the accuracy of students' performance improved during the semester. The students share their knowledge and their experiences. They also learn to cooperate because the success of their project is dependent on the collective work of each student. The most recent methods are presented to the students during the whole working process and lets them discover good and bad solutions.

关键词： Noise mapping Project-based learning GIS

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Enhancing Location Recommendation Through Proximity Indicators, Areal Descriptors, and Similarity Clusters 13th

Enhancing Location Recommendation Through Proximity Indicato...

引用

13th Location-Based Services (LBS) Conference

作者： Meier, Sebastian Univ Appl Sci Potsdam Interact Design Lab Potsdam Germany

ISBN: (纸本)9783319472898;9783319472881

Location recommendation (LR) or rather location-based recommender systems (LBRS) are an integral part of modern location-based services (LBS). Most LR algorithms only focus on location-specific attributes when calculating recommendations, while completely ignoring the urban structure surrounding the locations. (In this paper we refer to a geographic coordinate (latitude and longitude) as position. Locations and places in contrast refer to physical entities e.g. a restaurant, a bus stop or a lake). This paper demonstrates how the urban structure can be modelled in LR calculations by using data from OpenStreetMap (OSM) and the location data itself. Based on these datasets, we present two approaches to extend the LR process by (1) including the urban structure in direct proximity of the location (Proximity Indicators and Areal Descriptors) and by (2) not only looking for individual locations but location clusters (Similarity Clusters). Thereby we acknowledge the complexity of a location, which can not be perceived as a detached entity. A location is part of a given urban structure and we need to include the parameters of this structure in our algorithms. A prototypical implementation compares locations from four major German cities: Berlin, Hamburg, Munich and Cologne and thereby highlights the applicability of the underlying data structures derived from OSM and the location data itself. We conclude by outlining the potential of the presented approaches in the context of LR as well as their relevancy for urban planning and neighboring disciplines.

关键词： Recommendation Location-based services Volunteer geographic information

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Displaying Voter Gains and Losses: Local Government Elections in South Africa for 2011 and 2016 28th

Displaying Voter Gains and Losses: Local Government Election...

引用

28th International Cartographic Conference (ICC)

作者： Schmitz, Peter M. U. CSIR Built Environm Meiring Naude Rd Pretoria South Africa Univ Pretoria Dept Geog Geoinformat & Meteorol Lynnwood Rd Pretoria South Africa Hsch Tech Fak Vermessung Informat & Math Schellingstr 24 D-70174 Stuttgart Germany

ISBN: (纸本)9783319573366;9783319573359

] Every five years, the South African population goes to the polls to elect local government councilors. These elections are fought along party lines, however, independent candidates are also allowed to participate. This paper looks at the change of voter behavior between two subsequent local government elections from 2011 and 2016. The percentage voter gains and losses for the top three political parties in South Africa are shown. In the election of 2016, the ruling African National Congress (ANC) party suffered its biggest loss since 1994. The Democratic Alliance (DA) showed an increase in votes between the two elections and, the new kid on the political block, the Economic Freedom Fighters (EFF), showed its biggest gains in the same areas where the ANC showed its largest losses. Three methodologies were used to show these voter behaviors, namely cartograms, 3D maps and thematic cartogram. The latter was used to show both losses and gains in the same cartogram.

关键词： Voters Cartogram 3D maps Thematic maps Elections

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A Heuristic for Multi-modal Route Planning 13th

A Heuristic for Multi-modal Route Planning

引用

13th Location-Based Services (LBS) Conference

作者： Bucher, Dominik Jonietz, David Raubal, Martin Swiss Fed Inst Technol Inst Cartog & Geoinformat Stefano Franscini Pl 5 CH-8093 Zurich Switzerland

ISBN: (纸本)9783319472898;9783319472881

Current popular multi-modal routing systems often do not move beyond combining regularly scheduled public transportation with walking, cycling or car driving. Seldom included are other travel options such as carpooling, carsharing, or bikesharing, as well as the possibility to compute personalized results tailored to the specific needs and preferences of the individual user. Partially, this is due to the fact that the inclusion of various modes of transportation and user requirements quickly leads to complex, semantically enriched graph structures, which to a certain degree impede downstream procedures such as dynamic graph updates or route queries. In this paper, we aim to reduce the computational effort and specification complexity of personalized multi-modal routing by use of a preceding heuristic, which, based on information stored in a user profile, derives a set of feasible candidate travel options, which can then be evaluated by a traditional routing algorithm. We demonstrate the applicability of the proposed system with two practical examples.

关键词： Multi-modal routing Routing algorithms Personalization

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Effects of Visual Variables on the Perception of Distance in Off-Screen Landmarks: Size, Color Value, and Crispness 13th

Effects of Visual Variables on the Perception of Distance in...

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13th Location-Based Services (LBS) Conference

作者： Li, Rui SUNY Albany Dept Geog & Planning Albany NY 12222 USA

ISBN: (纸本)9783319472898;9783319472881

Maps on mobile devices provide the convenience of accessing spatial information of the surroundings. They also raise the concern that the small screen size impacts user's acquisition of spatial knowledge as the small size causes the fragmentation of spatial knowledge. This fragmentation leads to the expense of more cognitive efforts and degradation of spatial knowledge. Following some effective approaches of representing distance to off-screen locations as contextual cues, this paper reports a design that incorporates not only the direction but also the distance using symbols. In addition, this study uses three different visual variables including size, color value, and crispness at the ordinal level of measurement and then compares their effectiveness on the perception of distance. Results show that color value contributes the least to the perception of distance. Size leads to slightly higher accuracy than crispness in comparing distances of off-screen landmarks. This study provides valuable information to further explore the impacts of different visual variables that could facilitate the acquisition of spatial knowledge on mobile devices. This study also points out the necessity of follow-up studies to clarify some issues in the current design as well as its impact on actual wayfinding performance.

关键词： Off-screen landmarks Visual variables Distance Spatial knowledge

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Ephemerality Is the New Black: A Novel Perspective on Location Data Management and Location Privacy in LBS 13th

Ephemerality Is the New Black: A Novel Perspective on Locati...

引用

13th Location-Based Services (LBS) Conference

作者： Ataei, Mehrnaz Kray, Christian Univ Munster Inst Geoinformat Ifgi Munster Germany

ISBN: (纸本)9783319472898;9783319472881

Location information is essential to location-based services (LBS), but also has the potential to reveal sensitive information about the users of LBS to malicious agents. Therefore, location privacy is an important issue to address for both users and providers of LBS. In this paper, we investigate how location privacy can be realized in the context of a location-based service. Based on a review of architectures for LBS and key issues related to location privacy, we discuss several measures to integrate location privacy into LBS. In order to address privacy threats associated with the storage of location information, we propose an approach based on privacy-by-design principles and introduce a conceptual model to facilitate the implementation of those principles. In addition, we investigate the role of location data management in the context of privacy preservation, and propose the concept of temporal and spatial ephemerality to improve location privacy in the context of a location-based service.

关键词： Location-based services Privacy by design Location privacy Ephemerality

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Planning Support Science for Smarter Urban Futures 1st ed. 2017

引用

丛书名： lecture notes in geoinformation and cartography

2017年

作者： Stan Geertman Andrew Allan Chris Pettit John Stillwell

ISBN: (数字)9783319578194

ISBN: (纸本)9783319578187

This book offers a selection of the best articles presented at the CUPUM (Computers in Urban Planning and Urban Management) Conference, held in the second week of July 2017 at the University of South Australia in Adelaide. It provides a state-of-the-art overview of the availability and application of planning support systems (PSS) in the context of smart cities, big data, and urban futures. Rapid advances in computing, information, communication and web-based technologies are reaching into all facets of urban life, creating new and exciting urban futures. With the universal adoption of networked computing technologies, data generation is now so massive and all pervasive in society that it offers unprecedented technological solutions for planning and managing urban futures. These technologies are essential to effective urban planning and urban management in an increasingly challenging world, with socially disruptive changes, more complex and sophisticated urban lives and the need for resilience to deal with the possibility of adverse future environmental events and climate change. The book discusses examples of these technologies which encompass, inter alia: smart urban futures, where cities with myriad sensors are networked with communication technologies that enable the city planners to monitor well-being and be responsive to citizens' needs to allow dynamic management in real-time; PSS that encompass new hardware, develop new indicators, applications and innovative ways of facilitating public and community involvement in the management and planning of urban areas; and urban modelling that draws on theory and the richness of data from the growing range of urban sensing and communication technologies to build a better understanding of urban dynamics, trends and 'what-if' scenario investigations, and to provide better tools for planning and policymaking.

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Interaction Problems Found Through Usability Testing on Interactive Maps 28th

Interaction Problems Found Through Usability Testing on Inte...

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28th International Cartographic Conference (ICC)

作者： Vieira de Jesus, Elaine Gomes Brito, Patricia Lustosa Fernandes, Vivian de Oliveira Dept Transport Engn & Geodesy Salvador BA Brazil

ISBN: (纸本)9783319573366;9783319573359

Due to the technological changes beginning in the 1970s, significant advances were seen in the field of cartography, of which the move from analog maps to digital and online ones stands out. This context highlights the importance of obtaining greater efficacy in cartographic communication, permitting the interaction between the user and the content of the map. For interfaces to be developed in an effective way, different approaches must be taken into consideration, one of these is related to the concept of usability. The objective of this study is to analyze the usability of the interactive Brazilian maps Geobahia and Geopolis with relation to the use of the data and information they present. To achieve this objective, usability tests were carried out with the aim of evaluating the quality of use of the interfaces, measured by the ease with which the users concluded their proposed tasks. The tests showed certain difficulties confronted by these users in the realization of proposed tasks that indicate the possible presence of usability problems with these interfaces.

关键词： Interactive maps Usability Interfaces

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Characterizing Maps from Visual Properties 28th

Characterizing Maps from Visual Properties

引用

28th International Cartographic Conference (ICC)

作者： Domingues, Catherine Jolivet, Laurence Inst Natl Informat Geog & Forestiere St Mande France

ISBN: (纸本)9783319573366;9783319573359

Customized mapping needs to rely on a strategy to help mapmakers in designing their maps. Our approach is based on analogy between existing sample maps and the wished customized map. The challenge consists in being able to offer the appropriate maps according to each mapmaker's specifications. We have focused on the perception of seven selected visual properties of maps. To qualify this perception, a user test was set up. A sample map database was built in order to collect assessment of participants about visual properties. Test results were investigated through property and by statistical features. Analyses show that among properties, some are scored as more extreme and/or unanimous than others. Correlations between properties were also highlighted, which clarifies the characterization of sample maps. We then suggested a way to discover the database in a custom-made map process by using relevant queries based on statistical features of properties. Recommendations on exploiting a sample map database are finally formulated.

关键词： Custom-made map Visual property Color Visual property statistical feature User test

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Concept Design of #hylo-Geosocial Network for Sharing Hyperlocal Information on a Map 13th

Concept Design of #hylo-Geosocial Network for Sharing Hyperl...

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13th Location-Based Services (LBS) Conference

作者： Halkosaari, Hanna-Marika Ronneberg, Mikko Laakso, Mari Kettunen, Pyry Oksanen, Juha Sarjakoski, Tapani Finnish Geospatial Res Inst FGI Helsinki Finland

ISBN: (纸本)9783319472898;9783319472881

Sharing hyperlocal geospatial knowledge with one's community may foster many positive outcomes, such as increasing a sense of community. However, much of this information travels by word of mouth and, therefore, does not reach everyone in time or even at all. We present the human-centred concept design process of #hylo, a geosocial network in which users can easily share personal, hyperlocal geospatial knowledge about their surroundings. Users may gain hyperlocal information of their own places, filtered with their own interests. We expect #hylo to increase (1) attachment to location, (2) interest in the area, and (3) social participation in local community. We explain the design process and show results from initial user studies that were encouraging, as the participants were interested in this kind of hyperlocal information and found it useful. Even those who are usually hesitant to post in social media, found this kind of community-focused, hyperlocal platform to be a pleasant place to share information.

关键词： Human-centred design Geosocial Hyperlocal Location-based Map application

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