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  • 1
    Online Resource
    Online Resource
    Hindawi Limited ; 2022
    In:  Computational Intelligence and Neuroscience Vol. 2022 ( 2022-12-22), p. 1-25
    In: Computational Intelligence and Neuroscience, Hindawi Limited, Vol. 2022 ( 2022-12-22), p. 1-25
    Abstract: Fog computing provides a multitude of end-based IoT system services. End IoT devices exchange information with fog nodes and the cloud to handle client undertakings. During the process of data collection between the layer of fog and the cloud, there are more chances of crucial attacks or assaults like DDoS and many more security attacks being compromised by IoT end devices. These network (NW) threats must be spotted early. Deep learning (DL) assumes an unmistakable part in foreseeing the end client behavior by extricating highlights and grouping the foe in the network. Yet, because of IoT devices’ compelled nature in calculation and storage spaces, DL cannot be managed on those. Here, a framework for fog-based attack detection is proffered, and different attacks are prognosticated utilizing long short-term memory (LSTM). The end IoT gadget behaviour can be prognosticated by installing a trained LSTMDL model at the fog node computation module. The simulations are performed using Python by comparing LSTMDL model with deep neural multilayer perceptron (DNMLP), bidirectional LSTM (Bi-LSTM), gated recurrent units (GRU), hybrid ensemble model (HEM), and hybrid deep learning model (CNN + LSTM) comprising convolutional neural network (CNN) and LSTM on DDoS-SDN (Mendeley Dataset), NSLKDD, UNSW-NB15, and IoTID20 datasets. To evaluate the performance of the binary classifier, metrics like accuracy, precision, recall, f1-score, and ROC-AUC curves are considered on these datasets. The LSTMDL model shows outperforming nature in binary classification with 99.70%, 99.12%, 94.11%, and 99.88% performance accuracies on experimentation with respective datasets. The network simulation further shows how different DL models present fog layer communication behaviour detection time (CBDT). DNMLP detects communication behaviour (CB) faster than other models, but LSTMDL predicts assaults better.
    Type of Medium: Online Resource
    ISSN: 1687-5273 , 1687-5265
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2388208-6
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  • 2
    In: Advances in Meteorology, Hindawi Limited, Vol. 2015 ( 2015), p. 1-11
    Abstract: The present study examines the aerosol characteristics over two locations in the northwest region of India (Dehradun and Patiala) during premonsoon season of 2013. The average mass concentrations of particulates (PM 10 ; PM 2.5 ; PM 1 ) were found to be 118 ± 36 , 34 ± 11 , and 19 ± 10   µ gm −3 and 140 ± 48 , 30 ± 13 , and 14 ± 06   µ gm −3 over Dehradun and Patiala, respectively. The average aerosol optical depth ( A O D 500  n m ) is observed to be 0.62 ± 0.11 over Dehradun and 0.56 ± 0.21 over Patiala. Ångström exponent and fine mode fraction show higher values over Dehradun as compared to Patiala. The average mass concentration of black carbon was found to be 3343 ± 546   ngm −3 and 6335 ± 760   ngm −3 over Dehradun and Patiala, respectively. The diurnal pattern of BC is mainly controlled by boundary layer dynamics and local anthropogenic activities over both the stations. The average single scattering albedo ( S S A 500  n m ) exhibited low value over Patiala ( 0.83 ± 0.01 ) in comparison to Dehradun ( 0.90 ± 0.01 ), suggesting the abundance of absorbing type aerosols over Patiala. The average atmospheric aerosol radiative forcing is +37.34 Wm −2 and +54.81 Wm −2 over Dehradun and Patiala, respectively, leading to atmospheric heating rate of 1.0 K day −1 over Dehradun and 1.5 K day −1 over Patiala.
    Type of Medium: Online Resource
    ISSN: 1687-9309 , 1687-9317
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2015
    detail.hit.zdb_id: 2486777-9
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  • 3
    Online Resource
    Online Resource
    Hindawi Limited ; 2016
    In:  Journal of Nanomaterials Vol. 2016 ( 2016), p. 1-2
    In: Journal of Nanomaterials, Hindawi Limited, Vol. 2016 ( 2016), p. 1-2
    Type of Medium: Online Resource
    ISSN: 1687-4110 , 1687-4129
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2016
    detail.hit.zdb_id: 2229480-6
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