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  • 1
    In: Big Data and Cognitive Computing, MDPI AG, Vol. 6, No. 4 ( 2022-10-11), p. 112-
    Abstract: Flying ad hoc networks (FANETs) or drone technologies have attracted great focus recently because of their crucial implementations. Hence, diverse research has been performed on establishing FANET implementations in disparate disciplines. Indeed, civil airspaces have progressively embraced FANET technology in their systems. Nevertheless, the FANETs’ distinct characteristics can be tuned and reinforced for evolving security threats (STs), specifically for intrusion detection (ID). In this study, we introduce a deep learning approach to detect botnet threats in FANET. The proposed approach uses a hybrid shark and bear smell optimization algorithm (HSBSOA) to extract the essential features. This hybrid algorithm allows for searching different feature solutions within the search space regions to guarantee a superior solution. Then, a dilated convolutional autoencoder classifier is used to detect and classify the security threats. Some of the most common botnet attacks use the N-BaIoT dataset, which automatically learns features from raw data to capture a malicious file. The proposed framework is named the hybrid shark and bear smell optimized dilated convolutional autoencoder (HSBSOpt_DCA). The experiments show that the proposed approach outperforms existing models such as CNN-SSDI, BI-LSTM, ODNN, and RPCO-BCNN. The proposed HSBSOpt_DCA can achieve improvements of 97% accuracy, 89% precision, 98% recall, and 98% F1-score as compared with those existing models.
    Type of Medium: Online Resource
    ISSN: 2504-2289
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2895385-X
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  • 2
    In: Computers, MDPI AG, Vol. 11, No. 11 ( 2022-11-15), p. 162-
    Abstract: This study proposed a two-stage method, which combines a convolutional neural network (CNN) with the continuous wavelet transform (CWT) for multiclass modulation classification. The modulation signals’ time-frequency information was first extracted using CWT as a data source. The convolutional neural network was fed input from 2D pictures. The second step included feeding the proposed algorithm the 2D time-frequency information it had obtained in order to classify the different kinds of modulations. Six different types of modulations, including amplitude-shift keying (ASK), phase-shift keying (PSK), frequency-shift keying (FSK), quadrature amplitude-shift keying (QASK), quadrature phase-shift keying (QPSK), and quadrature frequency-shift keying (QFSK), are automatically recognized using a new digital modulation classification model between 0 and 25 dB SNRs. Modulation types are used in satellite communication, underwater communication, and military communication. In comparison with earlier research, the recommended convolutional neural network learning model performs better in the presence of varying noise levels.
    Type of Medium: Online Resource
    ISSN: 2073-431X
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662580-5
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  • 3
    Online Resource
    Online Resource
    MDPI AG ; 2020
    In:  Genes Vol. 11, No. 12 ( 2020-12-07), p. 1466-
    In: Genes, MDPI AG, Vol. 11, No. 12 ( 2020-12-07), p. 1466-
    Abstract: Background: Trisomy 18, also known as Edwards syndrome, was first described in the 1960s and is now defined as the second most common trisomy. While this genetic disease has been attributed to nondisjunction during meiosis, the exact mechanism remains unknown. Trisomy 18 is associated with a significantly increased mortality rate of about 5–10% of patients surviving until 1 year of age. We present a case of a 26-year-old female diagnosed with trisomy 18, well outliving her life expectancy, maintaining a stable state of health. Case Presentation: A 26-year-old female with non-mosaic Edwards syndrome presented to the clinic for follow up after recent hospitalization for aspiration pneumonia. The definitive diagnosis of trisomy 18 was made prenatally utilizing chromosomal analysis and G-banding and fluorescence in situ hybridization (FISH) on cells obtained via amniocentesis. Her past medical history is characterized by severe growth and intellectual limitations; recurrent history of infections, especially respiratory system infections; and a ventricular septal defect (VSD) that was never surgically repaired. She remains in good, stable health and is under close follow-up and monitoring. Conclusions: Despite the fact that Edwards syndrome carries a significantly high mortality rate due to several comorbidities, recent literature including this case report has identified patients surviving into adulthood. Advancements in early detection and parent education have likely allowed for these findings. We aim to present a case of an adult with trisomy 18, living in stable condition, with an importance on medical follow-up.
    Type of Medium: Online Resource
    ISSN: 2073-4425
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2527218-4
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  • 4
    In: Electronics, MDPI AG, Vol. 11, No. 23 ( 2022-12-05), p. 4029-
    Abstract: Recently, pattern recognition in audio signal processing using electroencephalography (EEG) has attracted significant attention. Changes in eye cases (open or closed) are reflected in distinct patterns in EEG data, gathered across a range of cases and actions. Therefore, the accuracy of extracting other information from these signals depends significantly on the prediction of the eye case during the acquisition of EEG signals. In this paper, we use deep learning vector quantization (DLVQ), and feedforward artificial neural network (F-FANN) techniques to recognize the case of the eye. The DLVQ is superior to traditional VQ in classification issues due to its ability to learn a code-constrained codebook. On initialization by the k-means VQ approach, the DLVQ shows very promising performance when tested on an EEG-audio information retrieval task, while F-FANN classifies EEG-audio signals of eye state as open or closed. The DLVQ model achieves higher classification accuracy, higher F score, precision, and recall, as well as superior classification abilities as compared to the F-FANN.
    Type of Medium: Online Resource
    ISSN: 2079-9292
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662127-7
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