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  • Küçük Resim
    Yayın
    A precision estimation method for volumetric changes
    (IEEE, 2019-06) Akça, Mehmet Devrim; Stylianidis, Efstratios; Gruen, Armin W.; Altan, Mehmet Orhan; Hofer, Martin; Smagas, Konstantinos; Sanchez Martin, Victor; Walli, Andreas; Jimeno, Elisa; Garcia, Alejandro
    Earth surface changes are often computed by comparing the sequences of digital elevation models (DEMs) so called the DEM of difference (DoD) method. We present an operational DEM generation, co-registration and DoD comparison software in which the surface changes are quantified in metric units of volume. A practical method, which is based on the law of error propagation, is developed to estimate the theoretical precisions of volumetric changes. The proposed pipeline can estimate the change of object volumes (in terms of loss and gain) together with their precision numbers. Change of the forest volume in a fire effected region in a test site is analyzed for the validation. The method can be used for various change detection applications related to forestry as well as other topics such as earthworks, geomorphology, mining, and urbanization.
  • Küçük Resim
    Yayın
    A bibliometric mapping analysis for the change on spatial design in Covid-19 process
    (Liberty Academic Publishers, 2023-12-01) Özker, Serpil; Nas, Sezin; Tuğlu Karslı, Umut; Budayan, Cenk; Tutkun, Cansu
    In 2020, the COVID-19 pandemic had a global impact, necessitating changes to daily life, since activities such as work, education, shopping, and socializing were curtailed due to the pandemic, and people had to perform most of these activities in their houses. However, the existing residential houses were insufficient to perform these activities. As a result, concepts affecting private life became prominent, leading to limitations on vital needs. Therefore, the restrictions imposed by the governments had negative social and psychological consequences for individuals. The limitations of action areas within houses lead to changes in spatial design. Consequently, studies on the requirements of the human environment have been initiated, with concepts such as flexibility, natural spaces, and privacy gaining importance in the design and use of housing. This process has led to a redefinition of the concept of space, necessitating the adaptation of spatial design to the new normal. The present study examines the impact of the COVID-19 pandemic on spatial design through a comprehensive review of relevant literature. Thus, a theoretical framework was proposed by revealing the distribution of the existing studies through a bibliometric analysis. Two bibliometric analyses were performed by considering the titles, abstracts, keywords of the studies, and findings, and conclusions of the studies, respectively. Based on the identified prominent keywords at the end of bibliometric analyses, the problem and result concepts were revealed. The most commonly used words are "user," "order," "function," "housing," "pandemic," "time," "change," "process," "impact," "quality," "environment," "space," "life," "need," "health," "quarantine," and "architecture."