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1.
International Conference on New Technologies, Development and Application, NT 2021 ; 233:690-699, 2021.
Article in English | Scopus | ID: covidwho-1669681

ABSTRACT

In the conditions of the COVID-19 pandemic, techniques and technologies represent important factors in the business of all companies, especially companies that deal with the collection and delivery of shipments. Reduced social distance during a pandemic directly affects new trends and ways of using technology in business, which accelerates and introduces new technologies such as IoT and 5G network in business. In this paper, the concept of 5G and IoT architecture is proposed, which can be used in all technological phases of postal traffic. The paper presents the possibilities and challenges of introducing IoT and 5G technology in postal traffic. Special attention in the paper is focused on the technological phases of collection and delivery of shipments, and changes that occur in the processes as a result of the introduction and integration of new technologies in postal traffic. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

2.
Journal of Intelligent & Fuzzy Systems ; 41(1):1341-1351, 2021.
Article in English | Web of Science | ID: covidwho-1374229

ABSTRACT

This paper proposes a deep learning framework for Covid-19 detection by using chest X-ray images. The proposed method first enhances the image by using fuzzy logic which improvises the pixel intensity and suppresses background noise. This improvement enhances the X-ray image quality which is generally not performed in conventional methods. The pre-processing image enhancement is achieved by modeling the fuzzy membership function in terms of intensity and noise threshold. After this enhancement we use a block based method which divides the image into smooth and detailed regions which forms a feature set for feature extraction. After feature extraction we insert a hashing layer after fully connected layer in the neural network. This hash layer is advantageous in terms of improving the overall accuracy by computing the feature distances effectively. We have used a regularization parameter which minimizes the feature distance between similar samples and maximizes the feature distance between dissimilar samples. Finally, classification is done for detection of Covid-19 infection. The simulation results present a comparison of proposed model with existing methods in terms of some well-known performance indices. Various performance metrics have been analysed such as Overall Accuracy, F-measure, specificity, sensitivity and kappa statistics with values 93.53%, 93.23%, 92.74%, 92.02% and 88.70% respectively for 20:80 training to testing sample ratios;93.84%, 93.53%, 93.04%, 92.33%, and 91.01% respectively for 50:50 training to testing sample ratios;95.68%, 95.37%, 94.87%, 94.14%, and 90.74% respectively for 80:20 training to testing sample ratios have been obtained using proposed method and it is observed that the results using proposed method are promising as compared to the conventional methods.

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