Search Results - "de By, Rolf A."

Utilization of Internet of Things and Wireless Sensor Networks for Sustainable Smallholder Agriculture by Bayih, Amsale Zelalem, Morales, Javier, Assabie, Yaregal, de By, Rolf A

“…Agriculture is the economy's backbone for most developing countries. Most of these countries suffer from insufficient agricultural production. The availability…”
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A Cloud-Based Multi-Temporal Ensemble Classifier to Map Smallholder Farming Systems by Aguilar, Rosa, Zurita-Milla, Raul, Izquierdo-Verdiguier, Emma, A. de By, Rolf

“…Smallholder farmers cultivate more than 80% of the cropland area available in Africa. The intrinsic characteristics of such farms include complex crop-planting…”
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A Workflow for Automated Satellite Image Processing: from Raw VHSR Data to Object-Based Spectral Information for Smallholder Agriculture by Stratoulias, Dimitris, Tolpekin, Valentyn, de By, Rolf, Zurita-Milla, Raul, Retsios, Vasilios, Bijker, Wietske, Hasan, Mohammad, Vermote, Eric

“…Earth Observation has become a progressively important source of information for land use and land cover services over the past decades. At the same time, an…”
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Spatiotemporal Information Extraction from a Historic Expedition Gazetteer by Bekele, Mafkereseb, de By, Rolf, Singh, Gaurav

“…Historic expeditions are events that are flavored by exploratory, scientific, military or geographic characteristics. Such events are often documented in…”
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Assessing yield and fertilizer response in heterogeneous smallholder fields with UAVs and satellites by Schut, Antonius G.T., Traore, Pierre C. Sibiry, Blaes, Xavier, de By, Rolf A.

“…•Light interception by smallholder crops can be monitored accurately with digital camera images taken from just above the crop or with UAV derived…”
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Designing all-inclusive land administration systems: A case study from Colombia by Morales, Javier, Lemmen, Christiaan, de By, Rolf A., Ortiz Dávila, Alvaro Enrique, Molendijk, Mathilde

“…Significant numbers of undocumented people-to-land relationships exist in countries around the world. They constitute a barrier to sustainable development. To…”
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Location Privacy in the Wake of the GDPR by Georgiadou, Yola, de By, Rolf, Kounadi, Ourania

“…The General Data Protection Regulation (GDPR) protects the personal data of natural persons and at the same time allows the free movement of such data within…”
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Poaching, habitat loss and the decline of neotropical parrots: a comparative spatial analysis by Clarke, Ronald V., de By, Rolf A.

“…Objective To evaluate the relative contributions of poaching and habitat loss to the endangerment of neotropical parrots Method A matched case-control design…”
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Combining favorability modeling with collaborative geo‐visual analysis to improve agricultural pest management by García‐Chapeton, Gustavo Adolfo, Toxopeus, Albertus G., Olivero, Jesús, Ostermann, Frank O., By, Rolf A.

“…In this article, we explore the potential of combining favorability modeling with collaborative geo‐visual analysis to determine when and where to apply…”
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Digital earth applications in the twenty-first century by de By, Rolf A., Georgiadou, Yola

“…In these early years of the twenty-first century, we must look at how the truly cross-cutting information technology supports other innovations, and how it…”
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A geo-information system approach for forest fire likelihood based on causative and anti-causative factors by Srivastava, Sanjay K., Saran, Sameer, de By, Rolf A., Dadhwal, V. K.

“…Innumerable forest fire spread models exist for taking a decision, but far less focus is on the real causative factors which initiate/ignite fire in an area…”
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Cyber-applications as gateway to data-rich Digital Earth systems by Morales, Javier, de By, Rolf A.

“…The underlying vision of the Digital Earth (DE) calls for applications that can embed vast quantities of geo-referenced data and allow users to study and…”
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Enabling collaborative GeoVisual analytics: Systems, techniques, and research challenges by García‐Chapeton, Gustavo Adolfo, Ostermann, Frank Olaf, By, Rolf A., Kraak, Menno‐Jan

“…Collaboration across disciplines is recognized as one of the great challenges for research in visual analysis of geographic information (GeoVisual Analytics,…”
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A skeleton design theory for spatial data infrastructure: Methodical construction of SDI nodes and SDI networks by de By, Rolf A., Lemmens, Rob, Morales, Javier

“…In this paper, we look into the theory of designing geoservice systems, i.e., SDI networks and their constituent SDI nodes. As the field of SDI is strongly…”
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Internet-of-Things and Wireless Sensor Networks as Enablers for Soil Observation in Smallholder Farms by Bayih, Amsale Zelalem, De By, Rolf A., Assabie, Yaregal, Guarin, Javier Morales

“…Smallholder farms are known to be resource-constrained and remotely located, which makes in-situ data collection challenging. Typically, on-farm data…”
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Interannual variability of NDVI and bird species diversity in Kenya by Oindo, Boniface O, de By, Rolf A, Skidmore, Andrew K

“…Species richness, or simply the number of species in a given area, is commonly used as an important indicator of biological diversity. Spatial variability in…”
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A system of types and operators for handling vague spatial objects by Dilo, Arta, de By, Rolf A., Stein, Alfred

“…Vagueness is often present in spatial phenomena. Representing and analysing vague spatial phenomena requires vague objects and operators, whereas current GIS…”
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Spatial Extent Models for Natural Language Phrases Involving Directional Containment by Singh, Gaurav, de By, Rolf A.

“…We study the problem of assigning a spatial extent to a text phrase such as ‘central northern California’, with the objective of allowing spatial…”
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skeleton design theory for spatial data infrastructure by de By, Rolf A, Lemmens, Rob, Morales, Javier

“…In this paper, we look into the theory of designing geoservice systems, i.e., SDI networks and their constituent SDI nodes. As the field of SDI is strongly…”
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Identifying crops in smallholder farms using time series of WorldView-2 images by Zurita-Milla, Raul, Izquierdo-Verdiguier, Emma, de By, Rolf A.

“…A high heterogeneity in farming factors (soils, weather, inputs, practice) characterizes the typical smallholder farm landscapes of sub-Saharan Africa. This…”
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