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

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Terrorists: Statistical Profile

Terrorists: Statistical Profile

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Osipov, Vasiliy Ivakin, Yan RAS St Petersburg Inst Informat & Automat St Petersburg 199178 Russia

ISBN: (纸本)9783642003035

This paper considers the problem of opposing the terroristic threat. It covers one of the aspects, which it was investigated within a complex project that examined the development of the terroristic threat monitoring system based on geoinformation technologies. A biographical data analysis has been made for 93 known terrorists. The analysis has resulted in time distribution reflecting the beginning and the end of their implication in terrorist activities. The probabilities were estimated for different levels of education, social background, marital status, existence of personal tragedies, and unbalanced temper, and pursuing different targets and objectives. Based upon the analyzed properties, the statistical profile of the terrorists has been compiled. Examples and recommendations on the above profile application were developed.

关键词： Terrorism Biography Analysis Indices, Statistical picture Distribution law Guidelines Risk assessment

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Identification of Practically Visible Spatial Objects in Natural Environments 1

引用

12th Association-of-Geographic-Information-Laboratories-for-Europe (AGILE) Conference/Workshop of the International-Society-of-Photogrammetry-and-Remote-Sensing (ISPRS)

作者： Tomko, Martin Trautwein, Friedjoff Purves, Ross S. Univ Zurich Irchel Dept Geog GIS Div CH-8057 Zurich Switzerland

ISBN: (数字)9783642003189

ISBN: (纸本)9783642003189

Image retrieval of landscape photographs requires accurate annotation using multi-faceted descriptions relating to the subject and content of the photograph. The subject of such photographs is dominantly the terrain and spatial objects visible from the photographer's viewpoint. While some spatial objects in the background may be obscured by foreground vegetation, other visible spatial objects beyond a certain distance may not present noteworthy elements of the captured scene (such as distant houses). Our aim is to assess approaches to improve the identification of practically visible spatial objects for image annotation. These approaches include the consideration of the apparent spatial object size and landcover information about occluding vegetation. These inputs are used to enhance viewshed analysis to accurately identify only spatial objects practically visible and therefore likely to be notable subjects of a photograph. The two approaches are evaluated in an experiment in a semi-rural area of Switzerland, whose results indicate that visual magnitude is key in accurate identification of visible spatial objects.

关键词： Vegetation

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Multisignature Protocols and Problem of Simultaneous Signing a Package of Contracts

Multisignature Protocols and Problem of Simultaneous Signing...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Moldovyanu, P. Dernova, E. Kostina, A. Moldovyan, N. Specialized Ctr Program Syst SPECTR St Petersburg 197342 Russia

ISBN: (纸本)9783642003035

Electronic messages authentication is an issue of significant importance for geographical information systems (GIS). In some cases the multisignature protocols can be effectively applied to solve efficiently special information authentication problems in GIS. New multisignature protocols based on the discrete logarithm problem in finite groups are introduced. The protocols are based oil digital signature schemes over multiplicative groups of the ground finite Fields, elliptic curves (EC), and vector groups, the last being a new cryptographic primitive. The protocols provide generation of the collective digital signature (DS) possessing internal integrity. Nobody participating in the protocol is able to form a valid collective DS that corresponds to reduced number of the signers. Besides, the collective DS of some special type can prove that a package of documents is signed by different sets of signers, and moreover the collective DS is formed Simultaneously by all signers. Therefore the protocols solve the well-known problem of simultaneous signing a contract as well as they solve the more difficult problem of simultaneous signing a package of contracts. The paper considers applicability of the known DS standards to implement the proposed protocols.

关键词： Digital signature Collective digital signature Discrete logarithm problem multisignature schemes Public key Finite group

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GIS for Profile-Based Context Formation in Situation Management

GIS for Profile-Based Context Formation in Situation Managem...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Smirnov, Alexander Shilov, Nikolay Levashova, Tatiana Kashevnik, Alexey RAS St Petersburg Inst Informat & Automat St Petersburg 199178 Russia

ISBN: (纸本)9783642003035

Geographical and related information stored in the profiles of coalition operation members is of highest importance. The above information call be processed in order to build actual context for the Current situation and create more efficient action plans. The profiles are assumed to contain Such information as transportation means available, their current coordinates, availability, etc. Through inquiries of a geographical information system (GIS), the following information can be obtained: available roads (traffic management systems call also provide traffic Situation information), current weather conditions (wind, temperature,. precipitation), time of sunrise and sunset.

关键词： Geographical information system Profiles Context

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Towards Semantic Interpretation of Movement Behavior 1

引用

12th Association-of-Geographic-Information-Laboratories-for-Europe (AGILE) Conference/Workshop of the International-Society-of-Photogrammetry-and-Remote-Sensing (ISPRS)

作者： Baglioni, Miriam Fernandes de Macedo, Jose Antonio Renso, Chiara Trasarti, Roberto Wachowicz, Monica Univ Pisa Dept Comp Sci I-56100 Pisa Italy Ecole Polytech Fed Lausanne Database Lab Lausanne Switzerland Univ Fed Ceara Dept Comp Sci Fortaleza Ceara Brazil KDDLAB ISTI CNR Pisa Italy Tech Univ Madrid Madrid Spain

ISBN: (数字)9783642003189

ISBN: (纸本)9783642003189

In this paper we aim at providing a model for the conceptual representation and deductive reasoning of trajectory patterns obtained from mining raw trajectories. This has been achieved by means of a semantic enrichment process, where raw trajectories are enhanced with semantic information and integrated with geographical knowledge encoded in an ontology. The reasoning mechanisms provided by the chosen ontology formalism are exploited to accomplish a further semantic enrichment step that gives a possible interpretation of discovered patterns in terms of movement behaviour. A sketch of the realised system, called Athena, is given, along with some examples to demonstrate the feasibility of the approach.

关键词： Ontology

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Real-time Web-based GIS for Analysis, Visualization, and Integration of Marine Environment Data

Real-time Web-based GIS for Analysis, Visualization, and Int...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Dabrowski, Jacek Kulawiak, Marcin Moszynski, Marek Bruniecki, Krzysztof Kaminski, Lukasz Chybicki, Andrzej Stepnowski, Andrzej Gdansk Univ Technol Dept Geoinformat PL-80952 Gdansk Poland

ISBN: (纸本)9783642003035

Visualization and integration of the marine spatial data collected by various marine sensors and sources is an important factor in the context of marine environment sensing and monitoring. Several approaches and techniques of measurements are available to achieve this purpose including direct sampling, airborne and satellite imagery, and underwater acoustics. The paper briefly describes the state-of-the art marine GIS system developed in the Department of Geoinformatics of Gdansk University of Technology, Poland. The proposed system is able to integrate many different types of marine data, especially those acquired by various acoustic sensors like multibeam sonar (MBSS), echosounder and side scan sonars (SSS), and other external sensors such as satellite data receiver, radar, or automated identification of ships (AIS) data analyzer. Instantaneous 2D and 3D Visualization is provided by the two components of the system: GeoServer web-based module and a standalone application basing on ESRI ArcGIS Engine solutions.

关键词： Marine GIS WMS Real-time Web-based GIS Multi-beam sonar Side-scan sonar Radar Single-beam echosounder Integration GeoServer Open Layers ESRI ArcGIS Engine ArcGlobe Satellite imagery

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Dynamic Models of Geographic Environment Using Ontological Relations

Dynamic Models of Geographic Environment Using Ontological R...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Martinez, Miguel Levachkine, Serguei Natl Polytech Inst Ctr Res Comp Intelligent Proc Geospatial Informat Lab Mexico City DF Mexico

ISBN: (纸本)9783642003035

The geographic environment contains different types of entities: for instance, cars, considered as geographical objects, as well as entities Such as storms, considered as geographical phenomena. With these entities Occurs something commonly called events. These represent the dynamics of a geographical environment. If these entities are modeled based oil an object-oriented approach, only properties and relations between other entities are considered, but the dynamic aspects are not. However, if they arc modeled based on an event-oriented approach, the semantic relations of the dynamic aspects are indispensably needed to model the environment, considering instantly changed geographic entities, properties and relations as well as the Subsequent effects they may cause to the environment and to other entities. We use Ontology Relations to explicitly describe changes in the properties and relations of geographic entities modified by events A proposed algorithm generates a semantic chain that represents a whole episode about events over different duration time intervals.

关键词： Dynamic environment Ontology Events Semantics Time interval

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IGIS Controlling Polystatic Detection Security Marine Economic Activity

IGIS Controlling Polystatic Detection Security Marine Econom...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Ermolaev, Victor Kozlovskiy, Sergey Makshanov, Andrey RAS St Petersburg Inst Informat & Automat St Petersburg 199178 Russia

This paper considers certain approaches to realization of intelligent geo-information systems' capacities for solving problems of controlling the means that implement polystatic methods for underwater objects'... 详细信息

ISBN: (纸本)9783642003035

关键词： Polystatic detection systems Control Intelligent geoinformation systems (IGIS)

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A Storage and Transfer Efficient Data Structure for Variable Scale Vector Data 1

引用

12th Association-of-Geographic-Information-Laboratories-for-Europe (AGILE) Conference/Workshop of the International-Society-of-Photogrammetry-and-Remote-Sensing (ISPRS)

作者： Meijers, Martijn van Oosterom, Peter Quak, Wilko Delft Univ Technol OTB Res Inst Housing Urban & Mobil Studies NL-2600 AA Delft Netherlands

ISBN: (数字)9783642003189

ISBN: (纸本)9783642003189

This paper deals with efficient data handling of variable scale vector data. Instead of pre-building a collection of data sets on different scales, we create an index structure on the base data set (largest scale data) that enables us to extract a map at exactly the right scale the moment we need it. We present both the classic version of the tGAP (topological Generalized Area Partitioning) data structure for storing our variable scale map, as well as an ameliorated version, both based on topological concepts. We prove that the classic structure needs in a worst case scenario O(e(2)) edges (with e the number of edges at largest scale). In practice we observed up to a factor 15 more edges in the variable scale data structure. The tGAP structure has been optimized to reduce geometric redundancy, but the explosion of additional edges is due to the changing topological references. Our main achievement finds its roots in the reduction of the number of edge rows to be stored for the 'lean' version (by removing the topological referential redundancy of the classic tGAP), which is beneficial both for storage and transfer. We show that storage space for the data set, plus the index, is less than twice the size of the original data set. The 'lean' tGAP, as the classic tGAP, offers true variable scale access to the data and has also improved performance, mainly due to less data communication between server and client.

关键词： Data structures

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Geospatial Information Integration Approach Based on Geographic Context Ontologies

Geospatial Information Integration Approach Based on Geograp...

引用

4th International Workshop on Information Fusion and Geographical Information Systems

作者： Torres, Miguel Quintero, Rolando Levachkine, Serguei Moreno, Marco Guzman, Giovanni Natl Polytech Inst Ctr Res Comp Intelligent Proc Geospatial Informat Lab Mexico City DF Mexico

ISBN: (纸本)9783642003035

Geospatial information integration is not a trivial task. An integrated View must be able to describe various heterogeneous data sources and its interrelation to obtain shared conceptualizations. In this work, an approach to geospatial information integration based on the conceptualization of the geographic domain is described. As a result of this conceptualization, we propose a semantic method for geospatial information integration. This consists of providing semantic descriptions, which explicitly describe the properties and relations of geographic objects represented by concepts, while the behavior depicts the objects, semantics. Also, this method allows Lis to compress and share geospatial information by means of alternative structures of knowledge representation. Thus, it avoids the ambiguity of the terms, using a geographic domain conceptualization. The general vision of the paper is to establish the basis to implement semantic processing oriented to geospatial data. Future work is focused on designing intelligent geographic information systems (iGIS).

关键词： Knowledge representation

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