Tentative Tests on Two Rapid Multispectral Classifiers for Classifying Point Clouds

This paper focusses on the feasibility of classifiers, developed for classifying multispectral images, for assigning classes to point clouds of urban scenes. The motivation of our research is that dense point clouds require fast classification methods to extract meaningful information within a reasonable amount of time and multispectral...

Exploring indoor movement patterns through eduroam connected wireless devices

Knowledge of people's locations and related mobility patterns are important for many decision-making processes. How to efficiently use the available space, is a common problem in many fields. Wireless Local Area Networks (WLAN) are widely used for locating mobile devices within this network. This study attempts to identify movement from Wi-Fi...

Point Cloud Based Visibility Analysis: first experimental results

Visibility computed from a LiDAR point cloud offers several advantages compared to using a gridded digital height-model. With a higher resolution and detailed information, point cloud data can provide precise analysis as well as an opportunity to avoid the process of generating a surface representation or a solid model. Also a better inclusion...

Using a generic spatial access method for caching and efficient retrieval of vario-scale data in a server-client architecture

This paper presents a methodology for using a generic data-driven spatial access method as a communication mechanism for vario-scale data in a server-client setting. As a complete data set is often quite large, it is managed at the server side and supporting different scale levels is important. We show that a generic R-tree like grouping method,...

Archiving AIS messages in a Geo-DBMS

This paper reports on the result of two studies for using a geographical database management system for archiving Automated Identification System (AIS) message data. In this paper, we analyse the storage (using MongoDB and PostgreSQL) and we give a more in-depth description of a possible data model for archiving messages based on the bit vector...

Multi-Domain Master Spatial Information Management for Open SDI in Indonesian Smart Cities

Spatial Information Infrastructure (SDI) has great potential to support smart city by providing framework dataset and real-time information services in urban informational infrastructure, the social infrastructure and citizen's participation practices. Bandung City and Jakarta City are maintaining their SDI for various kinds of decision-making...

Impact Modelling for Circular Economy: Geodesign Discussion Support Environment

Transitioning towards circular economy requires changes in the current system which yield a number of impacts on such fundamental values as human health, natural environment, exhaustible resources, social well-being and prosperity. Moreover, this process involves multiple actors and requires careful considerations of ample spatial information....

Effects of different management regimes on mangrove ecosystem services in Java, Indonesia

Indonesia is home to the largest area of mangrove forests in the world. Urban expansion, aquaculture farms, oil-palm plantations and timber extraction have caused an estimated decline of about 1.2 million hectares of Indonesia’s mangroves since the 1980’s, and currently only 3 million hectares remain. The major cause of mangrove conversion is...

The use of X-band polarimetric radar to assess the impact of different temporal and spatial resolution on a drainage system in Rotterdam urban area

This study aims to assess the impact of different temporal and spatial rainfall resolutions on the hydrological response of a higly urbanized area. The catchment under study is one of the pilot locations of RainGain Interreg IVB project, which aims at improving fine-scale measurement and prediction of rainfall to enhance urban pluvial flood...

Hill-slope Hydrological Model for Flash Flood

The hydrological response of catchments is influenced by the lanscape characteristics. Both channel networks and hillslopes play a major role in the propagation of water within catchments, and therefore influence the generation of floods. In mountainous regions, the importance of subsurface flows has been recognized for a long time (e.g. Dunne...

Entropy and river meander planform

This study departs from the hypothesis that the often striifing geometric similarity and regularity of meanders is the result of the second law of thermodynamics applied to open dissipative systems. It is argued that along a meandering river the continuous production of entropy is as low and as uniform as possible. An expression of entropy...

Simulation of coupled groundwater flow and transport of heat in the groundwater system under Vestre Lovénbreen, with the model METROHEAT; a surveying study

Svalbard has an arctic climate and glaciers cover about 60% of the land. The almost continuous permafrost layer prevents groundwater recharge in most places on Svalbard. Groundwater recharge takes place under glaciers where the base is at melting point. The Vestre Lovénbreen is a small glacier near Ny-Alesund in the northwestern part of...

The hydrostratigraphy of the ice-contact Trandum delta in southern Norway

Veldwerk Kaya, 100 km ten NO van Ouagadougou, Burkina Faso

River terrace formation in the Guadalhorce valley, Spain

River Terrace formation in the Guadalhorce Valley, Spain