Collections in this community

Recent Submissions

  • Pre- and post-fire comparison of forest areas in 3D 

    Akça, Mehmet Devrim; Stylianidis, Efstratios; Poli, Daniela; Gruen, Armin W.; Altan, Orhan; Hofer, Martin; Smagas, Konstantinos; Martin, Victor Sanchez; Walli, Andreas; Jimeno, Elisa; Garcia, Alejandro (Springer Berlin Heidelberg, 2019)
    A satellite processing platform for high resolution forest assessment (FORSAT) was developed. It generates the digital surface models (DSMs) of the forest canopy by advanced processing of the very-high resolution (VHR) ...
  • FORSAT: a 3D forest monitoring system for cover mapping and volumetric 3D change detection* 

    Stylianidis, Efstratios; Akça, Devrim; Poli, Daniela; Hofer, Martin; Gruen, Armin W.; Sánchez Martín, Víctor; Smagas, Konstantinos; Walli, Andreas; Altan, Orhan; Jimeno, Elisa; Garcia, Alejandro (Taylor and Francis Ltd., 2019-03-01)
    A 3D forest monitoring system, called FORSAT (a satellite very high resolution image processing platform for forest assessment), was developed for the extraction of 3D geometric forest information from very high resolution ...
  • Cyclic behavior of reinforced concrete cladding panels connected with energy dissipative steel cushions 

    Karadoǧan, Faruk; Yüksel, Ercan; Khajehdehi, Arastoo; Özkaynak, Hasan; Güllü, Ahmet; Şenol, Erkan (Elsevier Ltd, 2019-06-15)
    Precast concrete structures show damage after the destructive earthquakes and indicate that the connections of reinforced concrete (RC) cladding panels might be inadequate. RC cladding panels greatly increase the lateral ...
  • A generic point error model for TLS derived point clouds 

    Özendi, Mustafa; Akça, Devrim; Topan, Hüseyin (SPIE-Int Soc Optical Engineering, 2017)
    This work aims at developing a generic and anisotropic point error model, which is capable of computing magnitude and direction of a priori random errors, described in the form of error ellipsoids for each individual point ...
  • Analytical and numerical aspects of the dissipative nonlinear Schrodinger equation 

    Bayındır, Cihan (Turkic World Mathematical Soc, 2016)
    In this paper various analytical and numerical aspects of the dissipative nonlinear Schrodinger equation (d-NLS equation) are discussed. Decaying solitary wave type solutions derived by Demiray is reviewed and a new ...
  • 3-dimensional pre- and post-fire comparison of forest areas 

    Akca, Devrim; Stylianidis, Efstratios; Poli, Daniela; Gruen, Armin; Altan, Orhan; Hofer, Martin; Smagas, Konstantinos; Martin, Victor Sanchez; Garcia, Alejandro; Jimeno, Elisa; Walli, Andreas (International Society for Photogrammetry and Remote Sensing, 2018-03-06)
    Forest agencies give special attention to forest fires where post-disaster loss can rarely be gauged in a quick and economic way unless an appropriate technology is adopted. Determination of the planimetric and volumetric ...
  • Compressive spectral renormalization method 

    Bayındır, Cihan (Turkic World Mathematical Soc, 2018-01-01)
    In this paper a novel numerical scheme for finding the sparse self-localized states of a nonlinear system of equations with missing spectral data is introduced. As in the Petviashivili's and the spectral renormalization ...
  • Stochastic surface mesh reconstruction 

    Özendi, Mustafa; Akça, Mehmet Devrim; Topan, Hüseyin (International Society for Photogrammetry and Remote Sensing, 2018-05-30)
    A generic and practical methodology is presented for 3D surface mesh reconstruction from the terrestrial laser scanner (TLS) derived point clouds. It has two main steps. The first step deals with developing an anisotropic ...
  • Uni-axial behavior of energy dissipative steel cushions 

    Özkaynak, Hasan; Khajehdehi, Arastoo; Güllü, Ahmet; Azizisales, Faraz; Yüksel, Ercan; Karadoǧan, Hüseyin Faruk (Techno Press, 2018-06-25)
    Seismic excitations may impart a significant amount of energy into structures. Modern structural design attitudes tend to absorb some part of this energy through special dissipaters instead of heavy plastic deformations ...
  • Precursors of instability in a natural slope due to rainfall: a full-scale experiment 

    Askarinejad, Amin; Akça, Mehmet Devrim; Springman, Sarah Marcella (Springer Heidelberg, 2018-09-01)
    A full-scale landslide-triggering experiment was conducted on a natural sandy slope subjected to an artificial rainfall event, which resulted in mobilisation of 130m(3) of soil mass. Novel slope deformation sensors (SDSs) ...
  • Rogue wavefunctions due to noisy quantum tunneling potentials 

    Bayındır, Cihan (Turkic World Mathematical Soc, 2017)
    In this paper, we study the effects of white-noised potentials on nonlinear quantum tunneling. We use a split-step scheme to numerically solve the nonlinear Schrodinger equation (NLSE) with a tunneling potential. We consider ...
  • Coupled influence of content, gradation and shape characteristics of silts on static liquefaction of loose silty sands 

    Monkul, Mehmet Murat; Etminan, Ehsan; Şenol, Aykut (Elsevier Sci Ltd, 2017-10)
    Static liquefaction is a challenging problem of geotechnical engineering as its consequences are generally catastrophic when they occur on site. Previous laboratory studies focused on various factors that could influence ...
  • A decision making support tool for selecting green building certification credits based on project delivery attributes 

    Seyis Kazazoğlu, Senem; Ergen Pehlevan, Esin (Pergamon-Elsevier Science Ltd, 2017-12)
    The Green Building (GB) certification process embodies detailed requirements and specifications that lead to additional tasks for project teams, which increases complexity levels of the entire project delivery process. ...
  • Behaviour of steel cushions subjected to combined actions 

    Yüksel, Ercan; Özkaynak, Hasan; Khajehdehi, Arastoo; Güllü, Ahmet; Smyrou, Eleni; Bal, İhsan Engin; Karadoǧan, Hüseyin Faruk (Springer, 2018-02)
    Mild steel is relatively low-cost and easily accessible material to fabricate some structural members. It would be a significant advantage if seismic energy dissipaters that are used in structures constructed in the ...
  • Assessment and enhancement of SAR noncoherent change detection of sea-surface oil spills 

    Bayındır, Cihan; Frost, J. David; Barnes, Christopher F. (IEEE, 2018-01)
    Oil spills are one of the most dangerous catastrophes that threaten the oceans. Therefore, detecting and monitoring oil spills by means of remote sensing techniques that provide large-scale assessments is of critical ...
  • Shapes and statistics of the rogue waves generated by chaotic ocean current 

    Bayındır, Cihan (International Society of Offshore and Polar Engineers, 2016-06-26)
    In this study we discuss the shapes and statistics of the rogue (freak) waves emerging due to wave-current interactions. With this purpose, we use a simple governing equation which is a nonlinear Schrödinger equation (NLSE) ...
  • An emprical point error model for TLS derived point clouds 

    Akça, Mehmet Devrim; Özendi, Mustafa; Topan, Hüseyin (International Society for Photogrammetry and Remote Sensing, 2016-07-12)
    The random error pattern of point clouds has significant effect on the quality of final 3D model. The magnitude and distribution of random errors should be modelled numerically. This work aims at developing such an anisotropic ...
  • Compressive spectral method for the simulation of the nonlinear gravity waves 

    Bayındır, Cihan (Nature Publishing Group, 2016-02-25)
    In this paper an approach for decreasing the computational effort required for the spectral simulations of the fully nonlinear ocean waves is introduced. The proposed approach utilizes the compressive sampling algorithm ...
  • Monitoring of a laboratory-scale inland-delta formation using a structured-light system 

    Akça, Devrim; Seybold, Hansjörg J. (Blackwell Publishing Ltd., 2016-06-01)
    A reduced complexity model, which simulates the process of fluvial inland-delta formation, has been developed in a previous study. The results have been compared and validated with a laboratory experiment. This work ...

View more