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  • 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 (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 ...
  • Rogue wave spectra of the Kundu-Eckhaus equation 

    Bayındır, Cihan (Amer Physical Soc., 2016-06-15)
    In this paper we analyze the rogue wave spectra of the Kundu-Eckhaus equation (KEE). We compare our findings with their nonlinear Schrodinger equation (NLSE) analogs and show that the spectra of the individual rogue waves ...
  • Rogue waves of the Kundu-Eckhaus equation in a chaotic wave field 

    Bayındır, Cihan (American Physical Society, 2016-03-01)
    In this paper we study the properties of the chaotic wave fields generated in the frame of the Kundu-Eckhaus equation (KEE). Modulation instability results in a chaotic wave field which exhibits small-scale filaments with ...
  • 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 ...
  • Historical analysis of economic, social and environmental impacts of the Europe-Asia crossings in Istanbul 

    Alpkokin, Pelin; Black, John Andrew; İyinam, Şükriye; Kesten, Ali Sercan (Taylor & Francis Inc., 2016)
    Achieving economic, social, and environmental sustainability of urban transport is one of the great contemporary societal challenges. By tracing urban land-use and transport policies and technological change in transport ...
  • Energy dissipation characteristics of slab type buildings with special connectors 

    Şenol, Erkan; Dindar, Ahmet Anıl; Yüksel, E.; Karadoğan, Hüseyin Faruk (National Technical University of Athen, 2015-05-25)
    The latest developments in the construction technologies and the materials facilitated the practicing engineers to go higher and energy-efficient buildings. However, the safety of the buildings and the residents has been ...
  • Identification of the material properties of microisotropic materials 

    Kiriş, Ahmet; İnan, Esin (Krishtel eMaging Solutions Pvt. Ltd., 2015-07-01)
    The vibration problem of a rectangular plate is considered in the present work. The main purpose here is to identify the upper bounds of the unknown material moduli of the microisotropic plate material. The frequency ...
  • Early detection of rogue waves by the wavelet transforms 

    Bayındır, Cihan (Elsevier, 2016-01-08)
    We discuss the possible advantages of using the wavelet transform over the Fourier transform for the early detection of rogue waves. We show that the triangular wavelet spectra of the rogue waves can be detected at early ...
  • Laboratory flume experiment with a coded structured light system 

    Akça, Mehmet Devrim; Seybold, Hansjorg; Shortis, M; Mills, J (Copernicus Gesellschaft Mbh, 2012-08-25)
    The topography of inland deltas is influenced chiefly by the water-sediment balance in distributary channels and local evaporation and seepage rates. In a previous study, a reduced complexity model has been applied to ...
  • Co-registration of 3d point clouds by using an errors-in-variables model 

    Akça, Mehmet Devrim; Aydar, Umut; Altan, Mehmet Orhan; Akyılmaz, Orhan; Shortis, M; Mills, J (Copernicus Gesellschaft Mbh, 2012-08-25)
    Co-registration of point clouds of partially scanned objects is the first step of the 3D modeling workflow. The aim of co-registration is to merge the overlapping point clouds by estimating the spatial transformation ...
  • Determining pull - out deformations of bonded metal anchors embedded in concrete by means of photogrammetry 

    Akça, Mehmet Devrim; Avşar, Edip O.; Altan, Mehmet Orhan; Doğan, Umut Anıl; Shortis, M; Mills, J (Copernicus Gesellschaft Mbh, 2012-08-25)
    Chemical anchorages are applied in many engineering implementations, particularly strengthening of reinforced concrete structures. During strengthening procedure; chemical anchorages should be tested, since they supply to ...
  • 3-d vibration analysis of microstretch plates 

    İnan, Esin; Kırış, Ahmet (Springer, 2007)
    In the present work, rectangular plates with various boundary conditions are Studied, which are modeled by the rnicrostretch theory. Wave propagation problem is investigated and new waves are observed which do not appear ...
  • 3-d vibration analysis of the rectangular micro damaged plates 

    Kırış, Ahmet; İnan, Esin (Springer, 2008)
    In the present work, damaged plates are modeled by the micro-elongation theory which neglects the micropolar effects in Eringen's microstretch theory. The wave propagation problem is Studied and a new wave which does not ...
  • A novel nonreflecting boundary condition for unsteady flow 

    Zafer, Baha; Delale, Can Fuat (WILEY-BLACKWELL, 2014-01-10)
    A novel nonreflecting boundary condition, which converges to the specified time-dependent boundary condition within any degree of accuracy, is introduced for the numerical simulation of hyperbolic systems and validated ...
  • Photogrammetric Monitoring of an Artificially Generated Shallow Landslide 

    Akça, Mehmet Devrim (Wiley-Blackwell, 2013-06)
    An artificial rainfall event was applied to a forested slope in Ruedlingen, northern Switzerland. The experiment triggered a landslide which resulted in mobilising about 130m3 of debris. The event was monitored by a ...
  • Quality assessment of 3D building data 

    Akça, Mehmet Devrim; Freeman, Mark; Sargent, Isabel; Gruen, Armin (Wiley-Blackwell Publishing, 2010-12)
    Three-dimensional building models are often now produced from lidar and photogrammetric data. The quality control of these models is a relevant issue both from the scientific and practical points of view. This work presents ...

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