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Authors: Todorovski D.; Advisor: -; Participants: Manirakiza J.G.; Zevenbergen J.; Boerboom L. (2018.) - Based on a case study conducted in Rwanda, firstly the type, the format and the status of land records are discovered, and then those are related with the process of post-conflict state building. This relation is explored in depth in order to determine and describe the role of land records in support of post-conflict state building. Here specific attention is paid to the role that land records have in land dispute resolution in such contexts. Findings from this paper shows that a strong relation exists and that land records play a positive role in support of the postconflict state building.
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Authors: Zhao H.; Advisor: -; Participants: Zeng Y.; Lv S.; Su Z. (2018.) - Results show that porosity and SHP and STP differ across the climate zones and strongly depend on soil texture. In particular, it is proposed that gravel impact on porosity and SHP and STP are both considered in the arid zone and in deep layers of the semi-arid zone. Parameterization schemes for porosity, SHP and STP are investigated and compared with measurements taken. To determine the SHP, including soil water retention curves (SWRCs) and hydraulic conductivities, the pedotransfer functions (PTFs) developed by Cosby et al. (1984) (for the Clapp–Hornberger model) and the continuous PTFs given by Wösten et al. (1999) (for the Van Genuchten–Mualem model) are recommended.
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Authors: Dalm, M.; Advisor: -; Participants: Buxton, M. W. N.; Van Ruitenbeek, F. J. A. (2019) - The results showed that NIR-SWIR hyperspectral imagery could be used to segment a population of waste samples by detecting occurrences of pyrophyllite, dickite and/or illite. This result can be explained by the fact that these minerals are commonly deposited further away from the ore-bearing epithermal veins, while the
absence of SWIR-active minerals or detected occurrences of alunite are more closely associated with these structures. The ability to identify waste with NIR-SWIR spectral sensors means there is potential that sensor-based sorting can be used to remove this waste from mineral processing operations. Additional research is still required to assess the economic feasibility of such a sensor-based sorting application.
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Authors: Ostermann, F. O.; Advisor: -; Participants: Garcia-Chapeton, G.; Kraak, M. J.; Zurita-Milla, R. (2018) - This paper presents a conceptual model and a proof-of-concept implementation of a novel approach to engage citizens in supervising the analysis of user-generated geographic content (UGGC).The complexity of some tasks and the increasing volume of UGGC often restrict the role of citizens to data providers. We propose a hybrid processing approach, which maps geographical problems into data mining and machine-learning tasks, presents analysis results to human supervisors, and uses the responses to improve the machine-learning and data mining. For the pilot study, we adapt an approach to find semantically distinct places in UGGC.
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Authors: Zhang, Z.; Advisor: -; Participants: Gerke, M.; Vosselman, G.; Yang, M. Y. (2018) - Results show that the standard Lidar filter is robust to random noise. However, artefacts and blunders in the DIM points often appear due to low contrast or poor texture in the images. Filtering will be erroneous in these locations. Filtering the DIM points pre-processed by a ranking filter will bring higher Type II error (i.e. non-ground
points actually labelled as ground points) but much lower Type I error (i.e. bare ground points labelled as non-ground points). Finally, the potential DTM accuracy that can be achieved by DIM points is evaluated. Two DIM point clouds derived by Pix4Dmapper and SURE are compared. On grassland dense matching generates points higher than the true terrain surface, which will result in incorrectly elevated DTMs. The application of the ranking filter le...
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Authors: Eliades, M.; Advisor: -; Participants: Bruggeman, A.; Djuma, H.; Lubczynski, M. W. (2018) - This study aims to examine interactions between tree characteristics, sap flow, and environmental variables in an open Pinus brutia (Ten.) forest with shallow soil. We examined radial and azimuthal variations of sap flux density (Jp), and also investigated the occurrence of hydraulic redistribution mechanisms, quantified nocturnal tree transpiration, and analyzed the total water use of P. brutia trees during a three-year period. Sap flow and soil moisture sensors were installed onto and around eight trees, situated in the foothills of the Troodos Mountains, Cyprus. Radial observations showed a linear decrease of sap flux densities with increasing sapwood depth. Azimuthal differences were found to be statistically insignificant. Reverse sap flow was observed during low vapor pressure...
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Authors: Budiati, W.; Advisor: -; Participants: Grigolon, A. B.; Brussel, M. J. G.; Rachmat, S. Y. (2018) - In this research, we measured the current conditions of proposed TOD areas in thirteen MRT stations in Jakarta to determine the potential TOD development. These thirteen stations were divided into three types based on environmental characteristics of the station location such as CBD, urban, and neighbourhood characteristics. The 5D of built environment variables were used as indicators to
examine the potential of TOD areas. Then, stakeholders were involved to fit and weigh the indicators. TOD indexes for each station were examined to identify potential improvement strategies. Each station is classified as having a high, medium or low TOD index. By understanding the specific strategies for different TOD indexes, this paper is intended to support those development areas to improve lo...
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Authors: Ronzhin, S.; Advisor: -; Participants: Folmer, E. J. A.; Lemmens, R. L. G. (2018) - Modern software tools for managing Linked Data are often designed for skilled users. Therefore, they cannot be used for education
purposes because they require substantial a priori knowledge about the Resource Description Framework and the SPARQL query
language. LinkDaLe is a single page application designed to teach students the concept of Linked Data and work with linked data at
the same time. In the paper we showcase the interface and functionality of LinkDaLe by triplifying data on Geo4All member
organizations. The application was built and evaluated within The Business Process Integration Lab, a master programme course in
2016 and 2017 years. Positive feedback from both students and teachers proved the relevance of the proposed design consideration.
LinkDaLe showed usabil...
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Authors: Díaz-Vilariño, Lucía; Advisor: -; Participants: - (2015) - 3D models of indoor environments are increasingly gaining importance due to the wide range of applications to which they can be subjected: from redesign and visualization to monitoring and simulation. These models usually exist only for newly constructed buildings; therefore, the development of automatic approaches for reconstructing 3D indoors from imagery and/or point clouds can make the process easier, faster and cheaper. Among the constructive elements defining a building interior, doors are very common elements and their detection can be very useful either for knowing the environment structure, to perform an efficient navigation or to plan appropriate evacuation routes. The fact that doors are topologically connected to walls by being coplanar, together with the unavoidable pre...
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Authors: Salma, M.S.; Advisor: -; Participants: University of Twente, Faculty of Geo‐Information Science and Earth Observation (ITC) (2015) - -
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