The Experts below are selected from a list of 129 Experts worldwide ranked by ideXlab platform

Sergey V. Chervon - One of the best experts on this subject based on the ideXlab platform.

  • Realistic cosmological measurement of distances in the Friedmann universe
    International Journal of Modern Physics A, 2016
    Co-Authors: Aleksei Nikolaev, Sergey V. Chervon
    Abstract:

    We consider application of our development of Zeldovich’s ideas, presented in Ref. 1, for measurement of the cosmological angular diameter distance (ADD) in the Friedmann Universe. To make a comparison with ΛCDM we analyze ADD measurement in ϕCDM model responsible for the later inflation (present accelerated expansion of the Universe). We also analyze a small deviation from equality in the distance duality relation induced by the fullness (by matter) of the Cone of Light rays (CLR) which is used for the ADD measurement method.

  • Development of Zeldovich's approach for cosmological distances measurement in the Friedmann Universe
    The European Physical Journal C, 2015
    Co-Authors: Aleksei Nikolaev, Sergey V. Chervon
    Abstract:

    We present our development of Zeldovich's ideas for the measurement of the cosmological angular diameter distance (ADD) in the Friedmann Universe. We derive the general differential equation for the ADD measurement which is valid for an open, spatially-flat and closed universe, and for any stress energy tensor. We solve the mentioned equations in terms of quadratures in a form suitable for further numerical investigations for the present universe filled by radiation, (baryonic and dark) matter and dark energy. We perform the numerical investigation in the absence of radiation, and show the strong dependence ADD on the filling of the Cone of Light rays (CLR). The difference of the empty and totally filled CLR may reach 600-700 Mps. for the redshift $f\simeq 3$.

  • Development of Zeldovich’s approach for cosmological distances measurement in the Friedmann Universe
    The European Physical Journal C, 2015
    Co-Authors: A. V. Nikolaev, Sergey V. Chervon
    Abstract:

    We present our development of Zeldovich’s ideas for the measurement of the cosmological angular diameter distance (ADD) in the Friedmann Universe. We derive the general differential equation for the ADD measurement which is valid for an open, spatially flat, and closed universe, and for any stress energy tensor. We solve these equations in terms of quadratures in a form suitable for further numerical investigations for the present universe filled by radiation, (baryonic and dark) matter, and dark energy. We perform the numerical investigation in the absence of radiation, and we show the strong dependence ADD has on the filling of the Cone of Light rays (CLR). The difference of the empty and totally filled CLR may reach 600–700 Mps for a redshift of $$f\simeq 3$$ f ≃ 3 .

Benjamin D Boodaie - One of the best experts on this subject based on the ideXlab platform.

  • utility of a smartphone enabled otoscope in the instruction of otoscopy and middle ear anatomy
    European Archives of Oto-rhino-laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjathaiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P < 0.001). Finally, participants rated the smartphone-enabled otoscope as an excellent teaching aid for otoscopy training. The smartphone-enabled otoscope serves as a valuable teaching tool for pre-clinical otoscopy education. After using the device, pre-clinical students were more confident in performing a middle ear examination and in identifying important anatomical landmarks of the middle ear.

  • Utility of a smartphone-enabled otoscope in the instruction of otoscopy and middle ear anatomy.
    European Archives of Oto-Rhino-Laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjat-haiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P 

Amir A Hakimi - One of the best experts on this subject based on the ideXlab platform.

  • utility of a smartphone enabled otoscope in the instruction of otoscopy and middle ear anatomy
    European Archives of Oto-rhino-laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjathaiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P < 0.001). Finally, participants rated the smartphone-enabled otoscope as an excellent teaching aid for otoscopy training. The smartphone-enabled otoscope serves as a valuable teaching tool for pre-clinical otoscopy education. After using the device, pre-clinical students were more confident in performing a middle ear examination and in identifying important anatomical landmarks of the middle ear.

  • Utility of a smartphone-enabled otoscope in the instruction of otoscopy and middle ear anatomy.
    European Archives of Oto-Rhino-Laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjat-haiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P 

Simon P Lalehzarian - One of the best experts on this subject based on the ideXlab platform.

  • utility of a smartphone enabled otoscope in the instruction of otoscopy and middle ear anatomy
    European Archives of Oto-rhino-laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjathaiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P < 0.001). Finally, participants rated the smartphone-enabled otoscope as an excellent teaching aid for otoscopy training. The smartphone-enabled otoscope serves as a valuable teaching tool for pre-clinical otoscopy education. After using the device, pre-clinical students were more confident in performing a middle ear examination and in identifying important anatomical landmarks of the middle ear.

  • Utility of a smartphone-enabled otoscope in the instruction of otoscopy and middle ear anatomy.
    European Archives of Oto-Rhino-Laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjat-haiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P 

Aaron S Lalehzarian - One of the best experts on this subject based on the ideXlab platform.

  • utility of a smartphone enabled otoscope in the instruction of otoscopy and middle ear anatomy
    European Archives of Oto-rhino-laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjathaiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P < 0.001). Finally, participants rated the smartphone-enabled otoscope as an excellent teaching aid for otoscopy training. The smartphone-enabled otoscope serves as a valuable teaching tool for pre-clinical otoscopy education. After using the device, pre-clinical students were more confident in performing a middle ear examination and in identifying important anatomical landmarks of the middle ear.

  • Utility of a smartphone-enabled otoscope in the instruction of otoscopy and middle ear anatomy.
    European Archives of Oto-Rhino-Laryngology, 2019
    Co-Authors: Amir A Hakimi, Aaron S Lalehzarian, Simon P Lalehzarian, Ariel M Azhdam, Sharon Nedjat-haiem, Benjamin D Boodaie
    Abstract:

    To present the utility of a smartphone-enabled otoscope as a teaching adjunct in pre-clinical otoscopy training. 60 pre-clinical medical students were randomized into either a control group using a conventional otoscope or an experimental group using a smartphone-enabled otoscope. Participants in each group were trained to use their assigned device and were given time to practice on a colleague’s ear. Participants then completed a questionnaire indicating their ability to visualize anatomical landmarks of the middle ear as well as their confidence in performing a middle ear examination using their device. Compared to participants using the conventional otoscope, significantly more students using the smartphone-enabled otoscope identified the umbo (93% versus 63%, P = 0.005), the short process of the malleus (67% versus 33%, P = 0.008), the Cone of Light (100% versus 70%, P = 0.001), and the pars flaccida (60% versus 33%, P = 0.03). Furthermore, participants who used the smartphone-enabled otoscope reported significantly increased confidence in performing otoscopy compared to those who used a conventional otoscope (4.1 ± 0.7 versus 2.8 ± 0.9, P