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  • LT

  • Detection of temporary objects in mobile lidar point clouds :Powerpoint

    • Authors: Li, Guorui; Fang, Xinwei;  Advisor: -;  Participants: - (2014)

  • This lecture presents: Mobile laser scanning provides an accurate recording of road environments useful for many applications; Usually only permanent objects are of interest; Temporary objects can hamper the analysis of permanent ones; Example: change detection using multi-epoch data where temporary objects appear as (false) change signals.
  • BB

  • Application of a remote sensing method for estimating monthly blue water evapotranspiration in irrigated agriculture

    • Authors: Romaguera, Mireie;  Advisor: -;  Participants: - (2014)

  • In this paper we show the potential of combining actual evapotranspiration (ETactual) series obtained from remote sensing and land surface modelling, to monitor community practice in irrigation at a monthly scale. This study estimates blue water evapotranspiration (ETb) in irrigated agriculture in two study areas: the Horn of Africa (2010–2012) and the province of Sichuan (China) (2001–2010). Both areas were affected by a drought event during the period of analysis, but are different in terms of water control and storage infrastructure. The monthly ETb results were separated by water source—surface water, groundwater or conjunctive use—based on the Global Irrigated Area Map and were analyzed per country/province. The preliminary results show that the temporal signature of the total ...
  • BB

  • Application of nano silver / lecithin on wool through various methods :antibacterial properties and cell toxicity

    • Authors: Barani, Hossein;  Advisor: -;  Participants: - (2014)

  • Silver nanoparticles (AgNPs) were synthesized with lecithin through a simple chemical reduction method. The prepared AgNPs/lecithin was then loaded into the wool fabric by exhaustion and pad-dry-cure methods. The surface morphology of the loaded wool fabrics was characterized by low-voltage scanning electron microscopy, and the loading efficiency was determined by inductively coupled plasma optical emission spectrometry. Further, the effect of the different lecithin concentrations was examined on the antibacterial activity, cytotoxicity, and color of the loaded wool fabrics. The loaded fabric with AgNPs at a higher lecithin ratio presented higher antibacterial activity due to the higher loading efficiency and smaller nanoparticle size. Also, the morphology of the fibroblast cells in...
  • LT

  • Charles Joseph Minard's map in 2014 :Powerpoint

    • Authors: Kraak, M.J.;  Advisor: -;  Participants: - (2014)

  • This lecture presents: My sabbatical project: write a book on mapping time; Atlas to Alison's history of Europe constructed and arranged, under the direction of Mr. Alison; Historical MilitaryAtlas of Russia IX-XX centuries; Minard’s map in the style of the London Underground map; Mapping time: working environment; Minard’s temporal data analysis.
  • BB

  • Decades of struggle for space :about the legitimacy of informal settlements in urban areas

    • Authors: Shrestha, Reshma;  Advisor: -;  Participants: - (2014)

  • There are two prominent factors (i.e. push and pull factors) causing rural/urban migration resulting in the emergence of informal settlements in urban areas. The push factors are directly related to livelihood problems, displacement due to conflicts and natural disasters. Similarly, the pull factors are those related to economic opportunities, better education and better health facilities in the urban areas. In Nepal, the informal settlements without formally recognized land tenure in urban areas have always been a critical issue, and failure to give legitimacy to these settlements resulted in many hurdles and/or continuous struggles between the governments (central and local) and the informal settlers. Although the informal settlements lack legal legitimacy, some trust in social le...
  • BB

  • Design of an indoor mapping system using three 2D laser scanners and 6 DOF SLAM

    • Authors: Vosselman, George;  Advisor: -;  Participants: - (2014)

  • We present the design for a new indoor mapping system based on three 2D laser scanners as well as a method to process the range measurements such that the pose of the system and the planes of floor, ceiling and walls can be estimated simultaneously. By the combined use of the measurements of all three scanners the pose of the system can be reconstructed in 3D without the need for an IMU. The six pose parameters are modelled as a continuous function over time such that scan line deformations caused by rapid scanner movements do not lead to biases in the estimated poses. The theoretical feasibility of the approach is demonstrated by analysing reconstruction results derived from simulated sensor data of two indoor models. Assuming a perfectly calibrated sensor and ranging noise of 3 cm...
  • BB

  • Decision support systems in the Dutch forestry sector

    • Authors: Boerboom, L.;  Advisor: -;  Participants: - (2014)

  • Article shows in the results and discussion sections. From the interviews and literature survey carried out in the Netherlands, two information systems (Table 1) resulted which are considered as decision support systems. This table summarizes the more than 70 problem types in which these systems are used and which are listed in Appendix 1 and 2.
  • BB

  • Empirical atmospheric thresholds for debris flows and flash floods in the southern French Alps

    • Authors: Turkington, T.;  Advisor: -;  Participants: - (2014)

  • Debris flows and flash floods are often preceded by intense, convective rainfall. The establishment of reliable rainfall thresholds is an important component for quantitative hazard and risk assessment, and for the development of an early warning system. Traditional empirical thresholds based on peak intensity, duration and antecedent rainfall can be dif- ficult to verify due to the localized character of the rainfall and the absence of weather radar or sufficiently dense rain gauge networks in mountainous regions. However, convective rainfall can be strongly linked to regional atmospheric patterns and profiles. There is potential to employ this in empirical threshold analysis. This work develops a methodology to determine robust thresholds for flash floods and debris flows utilizin...
  • BB

  • Elephant movement closely tracks precipitation - driven vegetation dynamics in a Kenyan forest - savanna landscape

    • Authors: Bohrer, Gil;  Advisor: -;  Participants: - (2014)

  • This study investigates the ranging behavior of elephants in relation to precipitation-driven dynamics of vegetation. Movement data were acquired for five bachelors and five female family herds during three years in the Marsabit protected area in Kenya and changes in vegetation were mapped using MODIS normalized difference vegetation index time series (NDVI). In the study area, elevations of 650 to 1100 m.a.s.l experience two growth periods per year, while above 1100 m.a.s.l. growth periods last a year or longer.