American Journal of Science, Engineering and Technology

Volume 7, Issue 3, September 2022

  • Performance Analyses of the Eastern Arabic Hand Written Digits Recognition Using Deep Learning

    Hamdy Amin Morsy

    Issue: Volume 7, Issue 3, September 2022
    Pages: 57-61
    Received: Jul. 06, 2022
    Accepted: Jul. 20, 2022
    Published: Jul. 28, 2022
    DOI: 10.11648/j.ajset.20220703.11
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    Abstract: Deep convolutional neural networks are one of the most promising techniques to recognize objects, letters and digits. The recognition of handwritten digits is of great importance in many applications such as digits as password on cell phones, simplifying teaching children numbering systems. The Arabic handwritten digits recognition (AHDR) is an exa... Show More
  • An Evaluation of the Determinants of Workers’ Remittances: Evidence from Sri Lanka

    Thilak Ranjeewa Priyadarshana

    Issue: Volume 7, Issue 3, September 2022
    Pages: 62-76
    Received: May 26, 2022
    Accepted: Jun. 21, 2022
    Published: Aug. 04, 2022
    DOI: 10.11648/j.ajset.20220703.12
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    Abstract: Workers’ remittance inflows have historically been a driving force of the Sri Lankan economy. However, the inflow of workers’ remittances contracted significantly in 2021 reflecting the implications of the COVID-19 pandemic and the increased tendency to remit money through informal channels. At the same time, the external sector continues to show t... Show More
  • Digitalization of Air Insulated High Voltage Disconnectors and Earthing Switches

    Mariusz Rohmann, Dirk Schraeder

    Issue: Volume 7, Issue 3, September 2022
    Pages: 77-86
    Received: Jun. 23, 2022
    Accepted: Jul. 13, 2022
    Published: Aug. 04, 2022
    DOI: 10.11648/j.ajset.20220703.13
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    Abstract: The product digitalization is nowadays part of almost any product development, so that the digitalization of air insulated high voltage disconnectors and earthing switches will be introduced. The motivation by consequences for the product installation and maintenance are given and necessary considerations for the different available and required op... Show More
  • Study of Microstructure and Properties of Gold Based Brush Materials

    Xiumei Shi, Lei Jiao, Feng Wang, Richu Wang, Xu Liu, Yuefeng Qi

    Issue: Volume 7, Issue 3, September 2022
    Pages: 87-91
    Received: Jul. 03, 2022
    Accepted: Jul. 28, 2022
    Published: Aug. 15, 2022
    DOI: 10.11648/j.ajset.20220703.14
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    Abstract: Electric brushes for aerospace vehicles—conductive rings electrically contact sliding friction pairs, are important power and signal transmission channels for aerospace vehicles. They are key stand-alone products that affect the life and reliability of satellites. In addition to ensuring high reliability in structure, friction pair materials should... Show More
  • Study of Microstructure and Properties of Gold Based Material for Electric Conductive Slip Ring

    Xiumei Shi, Lei Jiao, Feng Wang, RiChu Wang, Linlin Yuan

    Issue: Volume 7, Issue 3, September 2022
    Pages: 92-96
    Received: Jul. 03, 2022
    Accepted: Jul. 28, 2022
    Published: Aug. 15, 2022
    DOI: 10.11648/j.ajset.20220703.15
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    Abstract: The space vehicle is powered by solar panels, and as a key component in the rotation mechanism of the panels, the sliding friction pair is an important power and signal transmission channel for the aircraft. In addition to ensuring high reliability in structure, conductive slip ring materials should also select electrical contact materials suitable... Show More
  • Out of Band Reduction on Advanced Modulation for MIMO Radar

    Randrianandrasana Marie Emile, Randriamitantsoa Paul Auguste

    Issue: Volume 7, Issue 3, September 2022
    Pages: 97-113
    Received: Jul. 06, 2022
    Accepted: Aug. 03, 2022
    Published: Aug. 15, 2022
    DOI: 10.11648/j.ajset.20220703.16
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    Abstract: This paper presents a system concept of an advanced modulation for Multiple Input Multiple Output (MIMO) radar. Multi-carrier modulation should be used for having efficient bandwidth. In this article, we proposed the modulation used on 5G specially to reduce MIMO radar Out of Band (OOB), to avoid the doppler effect and to beam the wave at a specifi... Show More
  • Comparison of Sensor Output Because Base Plate Thickness and Shape Change of Piezoelectric Composite Sensor for Long-Term Measurement

    Nobuhiro Shimoi, Kazuhisa Nakasho, Carlos Cuadra

    Issue: Volume 7, Issue 3, September 2022
    Pages: 114-120
    Received: Jul. 23, 2022
    Accepted: Aug. 24, 2022
    Published: Aug. 31, 2022
    DOI: 10.11648/j.ajset.20220703.17
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    This article belongs to the Special Issue Constructing the Next Generation of Artificial Intelligence
    Abstract: After strong earthquakes, many steel structures were built with frame welded joints of welded construction and a welded base. Although steel structures are regarded as highly resistant to earthquakes, many were constructed using frame-welded joints of fillet welded construction and welded column bases. These weld joints can have a low capacity to a... Show More
  • Investigating the Efficacy of Azadirachta Indica (Neem) Leaf on Mild Steel Corrosion in 1M Sulphuric Acid (H2SO4)

    Yusuf Bamidele Waidi, Olisa Yemi Philip

    Issue: Volume 7, Issue 3, September 2022
    Pages: 121-129
    Received: Aug. 27, 2022
    Accepted: Sep. 13, 2022
    Published: Sep. 27, 2022
    DOI: 10.11648/j.ajset.20220703.18
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    Abstract: Numerous failures and losses in the manufacturing and chemical industries have been attributed to corrosion processes. Chemical inhibitors can be used to combat failures brought on by metals that can no longer support the designed load due to corrosion problems. Synthetic inhibitors work well, but they come with drawbacks, including toxicity, dispo... Show More