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  • Sialylation of chitosan to mitigate Aβ toxicity

    • Authors: Dhruva Dhavale,;  Advisor: -;  Participants: K. Lai, Hy; Warwick, Paityn; James E. Henry, (2023)

  • Amyloid beta peptide (Aβ) is the main component of plaques and is known to play a role in the development of Alzheimer's disease (AD). As a result, structures that can trap Aβ or disrupt the interaction between Aβ and cells have been researched as a way to lessen the pathological effects of Aβ. Particularly, sialylated compounds that exhibit clustering effects could be advantageous.
  • BB

  • 3D modeling of building indoor spaces and closed doors from imagery and point clouds

    • 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...
  • BB

  • Accuracy Analysis of Photogrammetric UAV Image Blocks: Influence of Onboard RTK-GNSS and Cross Flight Patterns

    • Authors: Gerke, M.;  Advisor: -;  Participants: - (2016)

  • Unmanned aerial vehicles (UAV) are increasingly used for topographic mapping. Despite the flexibility gained when using those devices, one has to invest more effort for ground control measurements compared to conventional photogrammetric airborne data acquisition, because positioning devices on UAVs are generally less accurate. Additionally, the limited quality of employed end-user cameras asks for self-calibration, which might cause some problems as well. A good distribution of ground control points (GCPs) is not only needed to solve for the absolute orientation of the image block in the desired coordinate frame, but also to mitigate block deformation effects which are resulting mainly from remaining systematic errors in the camera calibration. In this paper recent developments in ...
  • BB

  • Adjusting spectral indices for spectral response function differences of very high spatial resolution sensors simulated from field spectra

    • Authors: Cundil, Sharon L.;  Advisor: -;  Participants: - (2015)

  • The use of data from multiple sensors is often required to ensure data coverage and continuity, but differences in the spectral characteristics of sensors result in spectral index values being different. This study investigates spectral response function effects on 48 spectral indices for cultivated grasslands using simulated data of 10 very high spatial resolution sensors, convolved from field reflectance spectra of a grass covered dike (with varying vegetation condition). Index values for 48 indices were calculated for original narrow-band spectra and convolved data sets, and then compared. The indices Difference Vegetation Index (DVI), Global Environmental Monitoring Index (GEMI), Enhanced Vegetation Index (EVI), Modified Soil-Adjusted Vegetation Index (MSAVI2) and Soil-Adjusted ...