bluuebunny/crossref_metadata_2025 huggingface dataset:
Maturidade Organizacional em Inteligência Competitiva – O Caso de uma Instituição Financeira Brasileira
Authors: Rodrigues Leonel Cezar , Volpp Júlio Cesar , Rechziegel Waldir
Published: April 2014

Este estudo tem como objetivo geral caracterizar e identificar o grau de maturidade em uso de Inteligência Competitiva (IC) de uma instituição financeira em um país emergente, segundo modelo de maturidade consagrado na literatura. Para realização deste trabalho, o método escolhido foi o estudo de caso único. Foram realizadas quatro coletas de dados em áreas distintas da organização estudada: Marketing, Segurança Física, Relações Internacionais e Gestão de Riscos de Ativos. Os principais resultados indicam que duas áreas apresentam maturidade em Nível 1 – Informal, e outras duas áreas apresentam maturidade em Nível 2 – Formal. As principais conclusões apontam para a coerência dos critérios e elementos que sustentam a lógica do modelo de maturidade testado. Demonstram ainda que na organização estudada a IC é descentralizada e que o modus operandi da IC nessa organização é intuitivo e avançado para seu nível de maturidade.
A Importância dos Clássicos na Formação do Pesquisador: o que nos diz os conceitos de socialização, identificação e campo intelectual como campo de poder
Authors: Teixeira Juliana Cristina , Zanoteli Eduardo José , Carrieri Alexandre de Pádua
Published: April 2014

O objetivo deste ensaio teórico é defender a importância da leitura dos clássicos no processo de formação e de constituição do sujeito como pesquisador. Constrói-se essa defesa por meio de abordagens teóricas relacionadas aos conceitos de socialização; de identificação (que se relaciona ao conceito de identidade); e por meio da noção bourdiesiana de que o campo intelectual é um campo de um poder. Ao longo da discussão, analisa-se como, por intermédio da socialização, há uma influência tanto da estrutura quanto do próprio sujeito em sua constituição como pesquisador. Por meio do conceito de identificação, percebe-se a influência da subjetividade do sujeito pesquisador ao se identificar ou não com os clássicos que lê, escolhendo aqueles que serão os “seus” clássicos. E, por meio da noção de campo intelectual como campo de poder, considera-se a existência de uma ciência que não é desinteressada e defende-se o perigo dos apuds e da leitura de traduções dos clássicos.
Finanças Comportamentais: uma investigação com base na teoria do prospecto e no perfil do investidor de estudantes de cursos stricto sensu portugueses
Authors: Haubert Fabricio Luis Colognese , Lima Carlos Rogerio Montenegro de , Lima Marcus Vinicius Andrade de
Published: April 2014

As Finanças Comportamentais representam uma nova área de estudo que busca analisar os aspectos psicológicos dos indivíduos no processo de tomada de decisões financeiras. Estudos nessa área buscam verificar premissas assumidas pelas teorias mais tradicionais, em particular a da racionalidade dos agentes econômicos, tendo como objetivo aperfeiçoar o modelo econômico-financeiro por meio da incorporação de evidências sobre a irracionalidade do investidor. Nesse contexto, o objetivo deste artigo é compreender o comportamento dos estudantes de pós-graduação stricto sensu portugueses quanto à sua atuação em investimentos com base nas finanças comportamentais. A fim de obter informações sobre o perfil comportamental de investidores e futuros investidores foi realizada uma pesquisa quantitativa para coleta de dados com uso de um questionário composto de 15 questões aplicadas a 130 estudantes de stricto sensu de Lisboa – Portugal. Foi possível identificar que os perfis conservador e moderado predominam entre os estudantes pesquisados. Verificou-se também que os estudantes apresentaram aversão ao risco no campo dos ganhos e propensão ao risco no campo das perdas. Assim é possível afirmar que ocorreu o efeito reflexo na presente pesquisa.
A Dinâmica do Significado do Trabalho na Iminência de uma Privatização
Authors: Palassi Marcia Prezotti , Silva Alfredo Leite da
Published: April 2014

Este artigo visa a evidenciar a dinâmica do significado do trabalho na iminência da privatização de uma empresa do setor de saneamento brasileiro. A discussão apoia-se nas ideias do MOW (1987) sobre a construção do significado do trabalho e de Tajfel (1981) sobre a pertença a grupos sociais. A ênfase na iminência baseia-se no entendimento de Figueiredo e Viana (1982) de que a contínua expectativa de frustração gera impacto diferenciado em relação a uma situação definida. Os dados foram coletados por meio de observação participante e de questionários. Os dados quantitativos foram analisados através da estatística descritiva e os qualitativos submetidos à análise de conteúdo. Os resultados revelaram uma dinâmica que fragmenta os significados do trabalho na iminência da privatização e se apresenta associada a diferentes sentidos e aspectos da situação. Propõe-se que a fragmentação do significado do trabalho diante da iminência de determinadas situações repita-se em outros contextos na atualidade.
Simulation of aromatic SOA formation using the lumping model integrated with explicit gas-phase kinetic mechanisms and aerosol-phase reactions
Authors: Im Y. , Jang M. , Beardsley R. L.
Published: April 2014

Abstract. The Unified Partitioning-Aerosol phase Reaction (UNIPAR) model has been developed to predict the secondary organic aerosol (SOA) formation through multiphase reactions. The model was evaluated with aromatic SOA data produced from the photooxidation of toluene and 1,3,5-trimethylbenzene (135-TMB) under various concentrations of NOx and SO2 using an outdoor reactor (University of Florida Atmospheric PHotochemical Outdoor Reactor (UF-APHOR) chamber). When inorganic species (sulfate, ammonium and water) are present in aerosol, the prediction of both toluene SOA and 135-TMB SOA, in which the oxygen-to-carbon (O : C) ratio is lower than 0.62, are approached under the assumption of a complete organic/electrolyte-phase separation below a certain relative humidity. An explicit gas-kinetic model was employed to express gas-phase oxidation of aromatic hydrocarbons. Gas-phase products are grouped based on their volatility (6 levels) and reactivity (5 levels) and exploited to construct the stoichiometric coefficient (αi,j) matrix, the set of parameters used to describe the concentrations of organic compounds in multiphase. Weighting of the αi,j matrix as a function of NOx improved the evaluation of NOx effects on aromatic SOA. The total amount of organic matter (OMT) is predicted by two modules in the UNIPAR model: OMP by a partitioning process and OMAR by aerosol-phase reactions. The OMAR module predicts multiphase reactions of organic compounds, such as oligomerization, acid-catalyzed reactions, and organosulfate (OS) formation. The model reasonably simulates SOA formation under various aerosol acidities, NOx concentrations, humidities and temperatures. Furthermore, the OS fractions in the SOA predicted by the model were in good agreement with the experimentally measured OS fractions.
Insights into biogeochemical cycling from a soil evolution model and long-term chronosequences
Authors: Johnson M. O. , Gloor M. , Kirkby M. J. , Lloyd J.
Published: April 2014

Abstract. Despite the importance of soil processes for global biogeochemical cycles, our capability for predicting soil evolution over geological timescales is poorly constrained. We attempt to probe our understanding and predictive capability of this evolutionary process by developing a mechanistic soil evolution model, based on an existing model framework, and comparing the predictions with observations from soil chronosequences in Hawaii. Our soil evolution model includes the major processes of pedogenesis: mineral weathering, percolation of rainfall, leaching of solutes, surface erosion, bioturbation and vegetation interactions and can be applied to various bedrock compositions and climates. The specific properties the model simulates over timescales of tens to hundreds of thousand years are, soil depth, vertical profiles of elemental composition, soil solution pH and organic carbon distribution. We demonstrate with this model the significant role that vegetation plays in accelerating the rate of weathering and hence soil profile development. Comparisons with soils that have developed on Hawaiian basalts reveal a remarkably good agreement with Na, Ca and Mg profiles suggesting that the model captures well the key components of soil formation. Nevertheless, differences between modelled and observed K and P are substantial. The fact that these are important plant nutrients suggests that a process likely missing from our model is the active role of vegetation in selectively acquiring nutrients. This study therefore indirectly indicates the valuable role that vegetation can play in accelerating the weathering and thus release of these globally important nutrients into the biosphere.
In-flight calibration of the Hot Ion Analyser on board Cluster
Authors: Blagau A. , Dandouras I. , Barthe A. , Brunato S. , Facskó G. , Constantinescu V.
Published: April 2014

Abstract. The Hot Ion Analyser (HIA), part of the Cluster Ion Spectrometry experiment, has the objective to measure the three-dimensional velocity distributions of ions. Due to a variety of factors (exposure to radiation, detector fatigue and aging, changes in the operating parameters, etc.), the particles' detection efficiency changes over time, prompting for continuous in-flight calibration. This is achieved by comparing the HIA data with the data provided by the WHISPER (Waves of HIgh frequency and Sounder for Probing of Electron density by Relaxation) experiment on magnetosheath intervals, for the high-sensitivity section of the instrument, or solar wind intervals, for the low-sensitivity section. The paper presents in detail the in-flight calibration methodology, reports on the work carried out for calibrating HIA and discusses plans to extend this activity in order to ensure the instrument's highest data accuracy.
Development of a flexible higher education curriculum framework for geographic information science
Authors: Veenendaal B.
Published: April 2014

Abstract. A wide range of geographic information science (GIScience) educational programs currently exist, the oldest now over 25 years. Offerings vary from those specifically focussed on geographic information science, to those that utilise geographic information systems in various applications and disciplines. Over the past two decades, there have been a number of initiatives to design curricula for GIScience, including the NCGIA Core Curriculum, GIS&T Body of Knowledge and the Geospatial Technology Competency Model developments. The rapid developments in geospatial technology, applications and organisations means that curricula need to constantly be updated and developed to maintain currency and relevance. This paper reviews the curriculum initiatives and outlines a new and flexible GIScience higher education curriculum framework which complements and utilises existing curricula. This new framework was applied to the GIScience programs at Curtin University in Perth, Australia which has surpassed 25 years of GIScience education. Some of the results of applying this framework are outlined and discussed.
Geospatial web services for limnological data: a case study of sensor observation service for ecological observations
Authors: Arias Muñoz C. , Oggioni A. , Brovelli M. A.
Published: April 2014

Abstract. The present work aims at designing and implementing a spatial data infrastructure for storing and sharing ecological data through geospatial web services. As case study, we concentrated on limnological data coming from the drainage basin of Lake Maggiore in the Northern of Italy. In order to establish the infrastructure, we started with two basic questions: (1) What type of data is the ecological dataset? (2) Which are the geospatial web services standards most suitable to store and share ecological data? In this paper we describe the possibilities for sharing ecological data using geospatial web services and the difficulties that can be encountered in this task. In order to test actual technological solutions, we use real data of a limnological published study.We concluded that limnological data can be considered observational data, composed by biological (species) data and environmental data, and it can be modeled using Observation and Measurement (O&M) specification. With the actual web service implementation the geospatial web services that could potentially be used to publish limnological data are Sensor Observation Services (SOS) and Web Feature Services (WFS). SOS holds the essential components to represent time series observations, while WFS is a simple model that requires profiling. Both, SOS and WFS are not perfectly suitable to publish biological data, so other alternatives must be considered, as linked data.
Spatio-Temporal Story Mapping Animation Based On Structured Causal Relationships Of Historical Events
Authors: Inoue Y. , Tsuruoka K. , Arikawa M.
Published: April 2014

Abstract. In this paper, we proposed a user interface that displays visual animations on geographic maps and timelines for depicting historical stories by representing causal relationships among events for time series. We have been developing an experimental software system for the spatial-temporal visualization of historical stories for tablet computers. Our proposed system makes people effectively learn historical stories using visual animations based on hierarchical structures of different scale timelines and maps.
Development of large Area Covering Height Model
Authors: Jacobsen K.
Published: April 2014

Abstract. Height information is a basic part of topographic mapping. Only in special areas frequent update of height models is required, usually the update cycle is quite lower as for horizontal map information. Some height models are available free of charge in the internet; for commercial height models a fee has to be paid. Mostly digital surface models (DSM) with the height of the visible surface are given and not the bare ground height, as required for standard mapping. Nevertheless by filtering of DSM, digital terrain models (DTM) with the height of the bare ground can be generated with the exception of dense forest areas where no height of the bare ground is available. These height models may be better as the DTM of some survey administrations. In addition several DTM from national survey administrations are classified, so as alternative the commercial or free of charge available information from internet can be used. The widely used SRTM DSM is available also as ACE-2 GDEM corrected by altimeter data for systematic height errors caused by vegetation and orientation errors. But the ACE-2 GDEM did not respect neighbourhood information. With the worldwide covering TanDEM-X height model, distributed starting 2014 by Airbus Defence and Space (former ASTRIUM) as WorldDEM, higher level of details and accuracy is reached as with other large area covering height models. At first the raw-version of WorldDEM will be available, followed by an edited version and finally as WorldDEM-DTM a height model of the bare ground. With 12 m spacing and a relative standard deviation of 1.2 m within an area of 1° x 1° an accuracy and resolution level is reached, satisfying also for larger map scales. For limited areas with the HDEM also a height model with 6 m spacing and a relative vertical accuracy of 0.5 m can be generated on demand. By bathymetric LiDAR and stereo images also the height of the sea floor can be determined if the water has satisfying transparency. Another method of getting bathymetric height information is an analysis of the wave structure in optical and SAR-images. An overview about the absolute and relative accuracy, the consistency, error distribution and other characteristics as influence of terrain inclination and aspects is given. Partially by post processing the height models can or have to be improved.
Mineralogical characterization of Martian Jezero crater from MRO CRISM hyperspectral images
Authors: Jin S. , Yang Y.
Published: April 2014

Abstract. Martian mineral detection and mapping can provide important information and constraints on Martian aqueous history, which can be used to assess the potential habitability of Mars. The key parameters to Martian aqueous alteration are the depth and extent of the Martian hydrous mineral. Therefore, it is important to know detailed minerals and chemical induction of the existence of water on the Martian surface at past or present. The Jezero crater located in the Nili Fossae region of Mars is the once-flooded crater, which has rich fan-delta deposit clays. It is a good case to study the clays and mineral components at Jezero crater, so as to know the geogloical processes and evolution on Mars. The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard the Mars Reconnaissance Orbiter (MRO) is a visible and near infrared spectrometer with enhanced spectral resolution, which provides an opportunity to map detailed and large-area mineralogy on Mars. In this paper, CRISM nearinfrared spectral data are analyzed using the mixture tuned filtering (MTMF) along with spectral angle mapper (SAM), and mineral components at Martian Jezero region are recognized, including the phyllosilicate, carbonate, nitrates and tectosil. Some detailed characteristics and implications of minerals at Martian Jezero crater are further studied and discussed, including implications on Martian climate change and geological evolution.
Research and implementation of geographic information service mode in digital home
Authors: Lei B. , Liu K. , Gan Y. , Zhong M.
Published: April 2014

Abstract. Accompanying infrastructure improvements and networking technology innovation, the development of digital home service industry has gotten more and more attention. However, the digital home service levels have not sufficiently met rising demand from users. Therefore, it is urgent to propose and develop new service modes for the digital home. Geographic information services can provide various spatial information services such as map search, spatial information query. It has become an inevitable trend to implement geographic information services in the digital home. This paper proposes three new geographic information services modes for the digital home after sufficient requirement analysis: pushed information service mode, interactive information service mode, personalized information service mode. The key technologies to implement geographic information services on digital televisions are studied, involving digital television middleware technology, network transmission technology and visualization technology. According to the service modes’ characteristics mentioned above, a service system in the digital home is established to implement geographic information services on the basis of digital television. The implementation of geographic information services in the digital home not only enriches the digital home services content, but also promotes geographic information from specialization to public popularity.
The Design and Implementation of Spatial Data Explorer based on Shell
Authors: Liu D. , Sun Q. , Wang G. , Qiao L.
Published: April 2014

Abstract. Spatial data is core of the Geographic Information System (Shorter form the GIS). Spatial data management is an important part of the GIS, many present spatial data management systems are usually only attached importance to storing and managing graphical data and attribute data of GIS in RDBMS. Making use of a spatial database technology to realize the integrated management, but this is not satisfied to quick access and management for many users. However, considering one way of the visual management, using the shell namespace extension framework and a registered mode integrated with the windows explorer, this paper has designed and developed a visual management component of data explorer about the spatial data in GIS so as to convenient to manager the distribution, multi-source, heterogeneous data. In addition, according to the requirements, users could organize the spatial data and access and manage quickly huge amounts of spatial data.
Digital terrain model reconstruction and preliminary scientific exploration planning of the Chang'E 3
Authors: Liu J. , Ren X. , Mu L. , Wang F. , Wang W. , Zhang X. , Li C.
Published: April 2014

Abstract. At 13:11 (GMT) December 14, 2013 Chang’e 3 (CE-3) successfully landed at 19.51° W, 44.12° N northwestern Mare Imbrium on the Moon, making it China's first planetary mission to land on a celestial body other than Earth. CE-3 explore comprises a lander and a rover. It carries eight scientific instruments onboard, including the descent camera on the lander, and the panoramic camera on the rover. These cameras imaged the topographic features around the landing site. This paper mainly presents the digital terrain model reconstruction techniques for the panoramic camera. Image pairs obtained during the first lunar day are used to reconstructed 3D Digital Terrain Models of 0.02 m resolution near observation points E and S3. The maps have been extensively used to support Yutu operations and strategic planning of the mission. The preliminary scientific exploration planning of the Yutu rover for the second lunar day has been made.
High Precision Topographic Mapping at Chang'E-3 Landing Site with Multi-Source Data
Authors: Liu Y. , Liu B. , Xu B. , Liu Z. , Di K. , Zhou J.
Published: April 2014

Abstract. Chang'e-3 (CE-3) is the first lander and rover of China following the success of Chang'e-1 and Chang'e-2 (CE-2) orbiters. High precision topographic mapping can provide detailed terrain information to ensure the safety of the rover as well as to support scientific investigations. In this research, multi-source data are co-registered into a uniform geographic framework for high precision topographic mapping at the CE-3 landing site. CE-2 CCD images with 7 m- and 1.5 m- resolutions are registered using selfcalibration bundle adjustment method with ground control points (GCPs) selected from LRO WAC mosaic map and LOLA DTM. The trajectory of CE-3 descent images are recovered using self-calibration free net bundle adjustment, and then the topographic data is rectified by absolute orientation with GCPs selected from the adjusted CE-2 DEM and DOM. Finally, these topographic data are integrated into the same geographic framework for unified, multi-scale, high precision mapping of the CE-3 landing site. Key technologies and the mapping products of this research have been used to support the surface operations of CE-3 mission.
Geo-spatial Service and Application based on National E-government Network Platform and Cloud
Authors: Meng X. , Deng Y. , Li H. , Yao L. , Shi J.
Published: April 2014

Abstract. With the acceleration of China’s informatization process, our party and government take a substantive stride in advancing development and application of digital technology, which promotes the evolution of e-government and its informatization. Meanwhile, as a service mode based on innovative resources, cloud computing may connect huge pools together to provide a variety of IT services, and has become one relatively mature technical pattern with further studies and massive practical applications. Based on cloud computing technology and national e-government network platform, "National Natural Resources and Geospatial Database (NRGD)" project integrated and transformed natural resources and geospatial information dispersed in various sectors and regions, established logically unified and physically dispersed fundamental database and developed national integrated information database system supporting main e-government applications. Cross-sector e-government applications and services are realized to provide long-term, stable and standardized natural resources and geospatial fundamental information products and services for national egovernment and public users.
Enhancing Manual Scan Registration Using Audio Cues
Authors: Ntsoko T. , Sithole G.
Published: April 2014

Abstract. Indoor mapping and modelling requires that acquired data be processed by editing, fusing, formatting the data, amongst other operations. Currently the manual interaction the user has with the point cloud (data) while processing it is visual. Visual interaction does have limitations, however. One way of dealing with these limitations is to augment audio in point cloud processing. Audio augmentation entails associating points of interest in the point cloud with audio objects. In coarse scan registration, reverberation, intensity and frequency audio cues were exploited to help the user estimate depth and occupancy of space of points of interest. Depth estimations were made reliably well when intensity and frequency were both used as depth cues. Coarse changes of depth could be estimated in this manner. The depth between surfaces can therefore be estimated with the aid of the audio objects. Sound reflections of an audio object provided reliable information of the object surroundings in some instances. For a point/area of interest in the point cloud, these reflections can be used to determine the unseen events around that point/area of interest. Other processing techniques could benefit from this while other information is estimated using other audio cues like binaural cues and Head Related Transfer Functions. These other cues could be used in position estimations of audio objects to aid in problems such as indoor navigation problems.
Basic technologies of web services framework for research, discovery, and processing the disparate massive Earth observation data from heterogeneous sources
Authors: Savorskiy V. , Lupyan E. , Balashov I. , Burtsev M. , Proshin A. , Tolpin V. , Ermakov D. , Chernushich A. , Panova O. , Kuznetsov O. , Vasilyev V.
Published: April 2014

Abstract. Both development and application of remote sensing involves a considerable expenditure of material and intellectual resources. Therefore, it is important to use high-tech means of distribution of remote sensing data and processing results in order to facilitate access for as much as possible number of researchers. It should be accompanied with creation of capabilities for potentially more thorough and comprehensive, i.e. ultimately deeper, acquisition and complex analysis of information about the state of Earth's natural resources. As well objective need in a higher degree of Earth observation (EO) data assimilation is set by conditions of satellite observations, in which the observed objects are uncontrolled state. Progress in addressing this problem is determined to a large extent by order of the distributed EO information system (IS) functioning. Namely, it is largely dependent on reducing the cost of communication processes (data transfer) between spatially distributed IS nodes and data users. One of the most effective ways to improve the efficiency of data exchange processes is the creation of integrated EO IS optimized for running procedures of distributed data processing. The effective EO IS implementation should be based on specific software architecture.
Finding Good Areas for Renting Apartments Using Apartments Information and Users' Trajectories
Authors: Si R. , Lu M. , Arikawa M. , Asami Y. , Iwasaki J.
Published: April 2014

Abstract. Current apartment renting web sites provide services to search apartments by attribute filters while they lack the services to help find areas that are convenient for living and meet customers’ personal preference. In many cases, people not only need attributes of the apartments meeting their requirements, but also need the attributes of the area be satisfied. We propose an IT service that can find appropriate areas for customers to rent apartments while they want to move to new places. The areas are picked according to users’ life styles mined from their former moving trajectories and to the attributes of the areas calculated from preferences of present rooms of users.
Temporal analysis of all high-resolution Mars imaging products
Authors: Sidiropoulos P. , Muller J.-P.
Published: April 2014

Abstract. A meta-data analysis has been performed of high-resolution imagery that have been acquired over the last four decades from Mars. More specifically, we are interested in two independent image parameters, the time that each image was acquired and the spatial resolution with which the planetary region is mapped in the image. We are only interested in mapping changes in high-resolution images. We use two different upper thresholds to discriminate them from low-resolution images, twenty metres and a hundred metres per pixel. In order to be able to extract semantic information about the temporal and spatial distribution of high-resolution Martian imagery we adopt two grouping strategies. In the first, images are clustered according to the time period (counted in Martian Years) that they were acquired, so as to examine whether sporadic Martian phenomena can be identified (e.g. a new crater) from imagery that depict the same area in different time periods. In the second grouping, images are clustered according to the Martian season that they were acquired, so as to examine whether seasonal Martian phenomena can be identified from imagery that depict the same area during the same season. This analysis supports the hypothesis that there is sufficient coverage for both tasks, since the Martian surface has been mapped at least once in each epoch and more than twice since 2002 and for each season at least 10 % of Martian surface has been mapped at least three times. The resulting maps and graphical plots will be presented will provide additional detail to this report.
A Zupt-Based Method for Astronaut Navigation on Planetary Surface and Performance Evaluation under Different Locomotion Patterns
Authors: Sun X. , Wu K. , Li Y. , Di K.
Published: April 2014

Abstract. In this research, we develop a Zero Velocity Update (ZUPT) based method for astronaut navigation and evaluate its performance under different locomotion patterns. In this ZUPT based dead-reckoning, the position drift of IMU is corrected using the constraint that the instantaneous velocity is zero when static state is automatically detected. A series of field experiments have been performed on terrains of different slopes and hardness in an urban park and a desert under different locomotion patterns, such as walking and hopping. The experimental results show that the positioning accuracy of the developed ZUPT based dead-reckoning is 1.5 %–2.3 % under different locomotion patterns, demonstrating the potential of ZUPT for astronaut navigation.
Generation of High Resolution Global DSM from ALOS PRISM
Authors: Takaku J. , Tadono T. , Tsutsui K.
Published: April 2014

Abstract. Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM), one of onboard sensors carried on the Advanced Land Observing Satellite (ALOS), was designed to generate worldwide topographic data with its optical stereoscopic observation. The sensor consists of three independent panchromatic radiometers for viewing forward, nadir, and backward in 2.5 m ground resolution producing a triplet stereoscopic image along its track. The sensor had observed huge amount of stereo images all over the world during the mission life of the satellite from 2006 through 2011. We have semi-automatically processed Digital Surface Model (DSM) data with the image archives in some limited areas. The height accuracy of the dataset was estimated at less than 5 m (rms) from the evaluation with ground control points (GCPs) or reference DSMs derived from the Light Detection and Ranging (LiDAR). Then, we decided to process the global DSM datasets from all available archives of PRISM stereo images by the end of March 2016. This paper briefly reports on the latest processing algorithms for the global DSM datasets as well as their preliminary results on some test sites. The accuracies and error characteristics of datasets are analyzed and discussed on various fields by the comparison with existing global datasets such as Ice, Cloud, and land Elevation Satellite (ICESat) data and Shuttle Radar Topography Mission (SRTM) data, as well as the GCPs and the reference airborne LiDAR/DSM.
The Current Status of Mapping in the World – Spotlight on Australia
Authors: Trinder J.
Published: April 2014

Abstract. Prior to 1950, there was very limited mapping in Australia covering only strategic areas. After World War II, the Federal Government funded the small scale mapping of the whole country. This involved the development of the Australian National Spheroid in 1966, the Australian Geodetic Datum in 1966 and 1984 (AGD66 and AGD84) which were replaced by the Australian Geocentric Datum in 1994 (GDA94). The mapping of the country was completed in 1987 with 100 % of the country mapped at 1:100,000 and 1:250,000 although about half of the 1:100,000 are unpublished products. The Federal Government through Geoscience Australia continues to provide digital data, such as the GEODATA 250K (now series 3). Mapping at larger scales is undertaken by the states and territories, including cadastral mapping. This paper will demonstrate the extent of mapping in Australia as part of the current UN global survey of mapping.
Combining MEMS-based IMU data and vision-based trajectory estimation
Authors: Tsai F. , Chang H. , Su A. Y. S.
Published: April 2014

Abstract. This paper presents an efficient location tracking algorithm that integrates vision-based motion estimation and IMU data. Orientation and translation parameters of the mobile device are estimated from video frames or highly overlapped image sequences acquired with built-in cameras of mobile devices. IMU data are used to maintain continuity of the orientation estimation between sampling of the image homography calculation. The developed algorithm consists of six primary steps: (1) pre-processing; (2) feature points detection and matching; (3) homography calculation; (4) control points detection and registration; (5) motion estimation and filtering; (6) IMU data integration. The pre-processing of the input video frames or images is to control the sampling rate and image resolution in order to increase the computing efficiency. The overlap rate between selected frames is designed to remain above 60 % for matching. After preprocessing, feature points will be extracted and matched between adjacent frames as the conjugate points. A perspective homography is constructed and used to map one image to another if the co-planar feature points between subsequent images are fully matched. The homography matrix can provide the camera orientation and translation parameters according to the conjugate pairs. An area-based image-matching method is employed to recognize landmarks as reference nodes (RNs). In addition, a filtering mechanism is proposed to ensure the rotation angle was correctly recorded and to increase the tracking accuracy. Comparisons of the trajectory results with different combinations among vision-based motion estimation, filtering mechanism and IMU data integration are evaluated thoroughly and the accuracy is validated with on-site measurement data. Experimental results indicate that the develop algorithm can effectively estimate the trajectory of moving mobile devices and can be used as a cost-effective alternative for LBS device both in outdoor and indoor environment.
Landscape Indices Based Two-Rank Sampling for Land Cover Validation
Authors: Chen F. , Chen J. , Wu H.
Published: April 2014

Abstract. A web-based validation is necessary for assessing the accuracy of Globalland30. As one of the obstacles in validation of global land cover data, it is a challenge to effectively select a reasonable sample dataset. Global land cover is heterogeneous and complex. However, some sampling plans based on probability and mathematical statistics don‟t consider the landscape heterogeneity. To address this disadvantage of the two-rank acceptance sampling plan(TRASP) for validation of land cover data, landscape indices are used to improving this sampling plan. Landscape indicator is an typical method of quantifying landscape heterogeneity. The landscape indices based sampling combined landscape indicators and TRASP, with an innovation on the two side of computing samples' size and distributing samples. Firstly, landscape shape index(LSI) is introduced in the equation of TRASP for the sample size. Further, the validation area is divided into some small grids, and LSI is used to find more valuable hotspots from these grids to distributing samples.The theory and formulas are presented in this paper, and an example application is provided in which the sample of a land-cover map is chosen.
Exact Finite Element Formulation of Frenet Formula of Curve in Geospatial Database
Authors: Wang J. , Xiao J.
Published: April 2014

Abstract. Directly using the difference form of Frenet formula will cause the three basic vectors losing their orthogonal features rapidly. As the analytic form is exact for infinite short length region, for finite length segregation, the omitted items should be retrieved to get high precision. Based on the unit orthogonal transformation in geometrical field theory, the Frenet formula is reformed for finite length region. Then, for given triple at the initial end of curve, using the curve parameters of curvature and torsion, the exact finite element formulation of Frenet formula is obtained to get the triples at any length position until the end point of curve. This method can be used as a high-precision technology for the measure, store, and retrieve of complicated curve.
Rule-base Generalization Method on Large-Scale Topographic Map
Authors: Xiao Z. , Yang B. , Zhang H.
Published: April 2014

Abstract. Map generalization is a procedure involving much intellective reasoning action, with very wide domain. It is also a difficult problem in the field of cartography in the world. This paper makes a study on the interactive and rulebased digital generalization, and a map generalization environment for large scale topographic map is designed and realized. A number of tests have proved that map generalization can be successfully and interactively done with the cooperation of human and computer if the procedures of map generalization are wisely decomposed. Compared with the traditional manual method, this map generalization can shorten the working time to 1/4 or even. Besides, the work will become less intensive with higher precision.
Positioning Accuracy Analysis and Application for Worldview-1 Stereo Imagery
Authors: Xiao Z. , Yang B. , Zhang H.
Published: April 2014

Abstract. This article introduced the progress of processing the WorldView-1 satellite image by using the air triangulation method．And different adjustment models were used to improve the vendor provided RPC (Rational Polynomial Coefficients) accuracy. WorldVfew-1 images in Beijing are used to test the correction accuracy of these adjustment models．Results show that the systematic errors of RPC model can be eliminated using a small amount of control points. The planar RMSE can reach 1.6 pixels (0.9 meter)．
Extraction of Image Topological Graph for Recovering the Scene Geometry from UAV Collections
Authors: Xu Z. , Wu L. , Chen S. , Wang R. , Li F. , Wang Q.
Published: April 2014

Abstract. This study was performed aiming to construct the scene geometry with a large set of unmanned aerial vertical (UAV) collections. By improving the popular structure from motion (SfM) algorithm, we focus on the efficiency improvement on procedures of both feature detection and image matching. Distinctive features are firstly detected with a CUDA based GPU accelerate technology under the basic of SIFT algorithm (CUDA-SIFT). And then, the image topological graph is computed by finding the conjunction relationship between UAV collections with the help of flight control data acquired by the UAV platform. Image matching will be guided by the computed image topological graph to solve the traversal matching problem. Experimental results show that CUDASIFT performs much better than the original SIFT algorithm on both efficiency and feature amount. Also, the topological graph of computed image limits the searching range for feature similarity computation, resulting in dramatic speed up. A final bundler adjustment is implemented in the procedure of scene geometry reconstruction, and the structural geometry as well as the coverage completeness is far more comparable to the SfM method.
Grammar-based Automatic 3D Model Reconstruction from Terrestrial Laser Scanning Data
Authors: Yu Q. , Helmholz P. , Belton D. , West G.
Published: April 2014

Abstract. The automatic reconstruction of 3D buildings has been an important research topic during the last years. In this paper, a novel method is proposed to automatically reconstruct the 3D building models from segmented data based on pre-defined formal grammar and rules. Such segmented data can be extracted e.g. from terrestrial or mobile laser scanning devices. Two steps are considered in detail. The first step is to transform the segmented data into 3D shapes, for instance using the DXF (Drawing Exchange Format) format which is a CAD data file format used for data interchange between AutoCAD and other program. Second, we develop a formal grammar to describe the building model structure and integrate the pre-defined grammars into the reconstruction process. Depending on the different segmented data, the selected grammar and rules are applied to drive the reconstruction process in an automatic manner. Compared with other existing approaches, our proposed method allows the model reconstruction directly from 3D shapes and takes the whole building into account.
Study on the standard architecture for geoinformation common services
Authors: Zha Z. , Zhang L. , Wang C. , Jiang J. , Huang W.
Published: April 2014

Abstract. The construction of platform for geoinformation common services was completed or on going in in most provinces and cities in these years in China, and the platforms plays an important role in the economic and social activities. Geoinfromation and geoinfromation based services are the key issues in the platform. The standards on geoinormation common services play as bridges among the users, systems and designers of the platform. The standard architecture for geoinformation common services is the guideline for designing and using the standard system in which the standards integrated to each other to promote the development, sharing and services of geoinformation resources. To establish the standard architecture for geoinformation common services is one of the tasks of "Study on important standards for geonformation common services and management of public facilities in city". The scope of the standard architecture is defined, such as data or information model, interoperability interface or service, information management. Some Research work on the status of international standards of geoinormation common services in organization and countries, like ISO/TC 211, OGC and other countries or unions like USA, EU, Japan have done. Some principles are set up to evaluate the standard, such as availability, suitability and extensible ability. Then the development requirement and practical situation are analyzed, and a framework of the standard architecture for geoinformation common services are proposed. Finally, a summary and prospects of the geoinformation standards are made.
Based on asynchronous communication protocol of geographic space information service access mechanism research
Authors: Chen G. , Zhao J. , Gu M. , Li D.
Published: April 2014

Abstract. At present, the traditional way of accessing to classified network in geographic spatial information services is using network gatekeeper and firewall etc. to ensure public and classified network communications links. However, the physical isolation between classified network and public network is crossed, which is bound to cause classified network potential security hazard. In Yunnan province space Land dynamic monitoring integration project, it proposed the point to point text message communication protocol and asynchronous transmission mechanism. Using geo-spatial information encryption processing and data compression processing method, it reduced the risk of data sensitivity and monitored, namely to ensure data security, which realized geographic spatial information services data communication effectively between classified network and public network in the rigid field conditions.
Indoor 3D Route Modeling Based On Estate Spatial Data
Authors: Zhang H. , Wen Y. , Jiang J. , Huang W.
Published: April 2014

Abstract. Indoor three-dimensional route model is essential for space intelligence navigation and emergency evacuation. This paper is motivated by the need of constructing indoor route model automatically and as far as possible. By comparing existing building data sources, this paper firstly explained the reason why the estate spatial management data is chosen as the data source. Then, an applicable method of construction three-dimensional route model in a building is introduced by establishing the mapping relationship between geographic entities and their topological expression. This data model is a weighted graph consist of "node" and "path" to express the spatial relationship and topological structure of a building components. The whole process of modelling internal space of a building is addressed by two key steps: (1) each single floor route model is constructed, including path extraction of corridor using Delaunay triangulation algorithm with constrained edge, fusion of room nodes into the path; (2) the single floor route model is connected with stairs and elevators and the multi-floor route model is eventually generated. In order to validate the method in this paper, a shopping mall called "Longjiang New City Plaza" in Nanjing is chosen as a case of study. And the whole building space is constructed according to the modelling method above. By integrating of existing path finding algorithm, the usability of this modelling method is verified, which shows the indoor three-dimensional route modelling method based on estate spatial data in this paper can support indoor route planning and evacuation route design very well.
Automatic Registration Of SAR And Optical Image Based On Line And Graph Spectral Theory
Authors: Zhao J. , Gao S. , Sui H. , Li Y. , Li L.
Published: April 2014

Abstract. In this paper, a novel registration method is proposed by integrating the graph spectral theory and line features. The principal steps of our algorithm are as follows. Firstly, the images are filtered to enhance the reliability and robustness of registration, and line features are acquired by Hough Transform. Secondly, the original point features can be obtained by calculating the line intersections. The points are normalized to reduce computational complexity. Thirdly, voronoi diagrams of two point sets are extracted respectively. The original corresponding point sets are determined by corresponding voronoi diagrams, which can be obtained by Graph Spectral Theory. At last, RANSAC is used to remove the wrong corresponding points. The transform relationship of the two input images can be achieved using the corresponding point sets. The experimental results show that the proposed method can achieve high accuracy for the registration between optical and SAR images.
Validation analysis of OpenStreetMap data in some areas of China
Authors: Zhou P. , Huang W. , Jiang J.
Published: April 2014

Abstract. The rapid development of computer technologies has given rise to the increase of open source web-based map services such as OpenStreetMap, a global vector data created by volunteers for free use. There is a concern about the quality and usability of the OpenStreetMap data because the volunteers that contribute the data generally lack the sufficient cartographic training. This paper focuses on the data quality analysis method for OpenStreetMap. A model for usability evaluation has been proposed. A benchmark between OpenStreetMap data and the 1:10 000 topographic data in some areas of China has been done to verify the proposed model, and the method proves to be effective.