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    A fast bottom-up approach toward three-dimensional human pose estimation using an array of cameras

    , Article Optics and Lasers in Engineering ; Volume 95 , 2017 , Pages 69-77 ; 01438166 (ISSN) Ghaneizad, M ; Kavehvash, Z ; Mehrany, K ; Tayaranian Hosseini, S. M. A ; Sharif University of Technology
    Abstract
    In this paper, employing recorded images of multiple cameras, we propose a novel fast approach for three-dimensional (3D) human pose reconstruction. Opening a new framework to the pose estimation application, the proposed method is inspired by optical 3D reconstruction algorithms conventionally used for integral imaging. Thanks to the fact that the pose estimation can be carried out by using only key features of the raw recorded images, the computation time and the complexity of our method are considerably reduced. Furthermore, utilizing the here proposed algorithm, rapid variations in actions can be easily tracked. The validity of the proposed method is demonstrated by several experimental... 

    Mechanism of the motion of nanovehicles on hexagonal boron-nitride: A molecular dynamics study

    , Article Computational Materials Science ; Volume 207 , 2022 ; 09270256 (ISSN) Vaezi, M ; Nejat Pishkenari, H ; Nemati, A ; Sharif University of Technology
    Elsevier B.V  2022
    Abstract
    Nanocars have been proposed to transport nanomaterials on the surface. Study of the mechanism of the motion of nanocars has attracted a lot of interests due to the potential ability of these nano-vehicles in the construction of nanostructures with bottom-up approach. Using molecular dynamics simulations, we study the motion of two nano-vehicles named “Nanocar” and “Nanotruck” on hexagonal boron-nitride monolayer. The obtained results reveals that, boron-nitride is an appropriate option to obtain higher mobility of nanocars compared with metal substrates. Considering different temperatures reveals that nanocars start to move on the BN at 200 K, while long range motions are observed at 400 K... 

    Optimal deployment of renewable electricity technologies in Iran and implications for emissions reductions

    , Article Energy ; Volume 91 , 2015 , Pages 882-893 ; 03605442 (ISSN) Aryanpur, V ; Shafiei, E ; Sharif University of Technology
    Elsevier Ltd  2015
    Abstract
    In this paper, special focus is paid to the long-term adoption of renewable electricity technologies and their implications for emissions reductions in Iran. MESSAGE, as a bottom-up energy supply optimization model, is used to assess the lowest-cost technology options. The potential impacts of transitioning to a renewable electricity supply are quantified, and the investment requirement to achieve a low-carbon generation mix is estimated. Alternative scenarios are defined to evaluate the impact of fossil fuel prices, the carbon tax and government incentives on the utilization of renewable resources, national renewable targets, and emissions reductions. The prioritization of non-hydro... 

    Impact of innovation programs on development of energy system: case of Iranian electricity-supply system

    , Article Energy Policy ; Volume 37, Issue 6 , 2009 , Pages 2221-2230 ; 03014215 (ISSN) Shafiei, E ; Saboohi, Y ; Ghofrani, M. B ; Sharif University of Technology
    2009
    Abstract
    The paper presents further experiments with an extended version of a comprehensive model for assessment of energy technologies and research and development (R&D) planning to evaluate the impact of innovation programs on development of Iranian electricity-supply system. This analytical instrument is a model of energy R&D resource allocation with an explicit perspective of developing countries which has been linked to a bottom-up energy-systems model. Three emerging electricity generation technologies of solar PV, wind turbine and gas fuel cell are considered in the model and the impact of innovation programs on cost-reducing innovation for them is examined. The main results provided by the...