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  1. 181

    Delineating Structural Features Related to Hydrothermal Alterations for Possible Mineralization in Share Area, Kwara State Nigeria Using Aeromagnetic Data by Warith Adewale Adebisi, Ismail Oluwaseye Folorunso, Hussain Olanrewaju Abubakar, Saminu Olatunji, Michael Opeoluwa Olaojo

    Published 2024-12-01
    “…The analytical signal map identified amplitude values ranging from 0.004 nT/m to 0.073 nT/m, with low and intermediate magnetic intensities linked to sediment-filled basement rocks and possible limestone and sandstone formations. …”
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  2. 182

    Identification of Hydraulic Connection Points between Different Confined Aquifers in the Liyazhuang Coal Mine by Zhenghe Liu, Peiyun Zhao, Lusheng Yang, Jingui Zhao, Hailong Ye, Jun Yang, Rujun Mo

    Published 2021-01-01
    “…First, each node of the finite element grid was considered as a water inrush point to determine the water level at other nodes. …”
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  3. 183

    Scheme and experiment of fast frequency hopping communication system based on SDR by Chengyu WEN, Conghui LIAO, Hang XIONG, Hong DU

    Published 2022-08-01
    “…A fast frequency hopping scheme based on SDR was proposed to solve the problem that the existing fast frequency hopping communication system relied on satellite timing.Firstly, a true random sequence was used to perform frequency hopping operation on the modulated signal in this scheme.And the frequency hopping table was obtained by channel down-conversion, low-pass filtering and amplitude peak detection operations.Secondly, the receiver searched for the precise starting point by the peak-to-peak distribution characteristics of the quadrature demodulation amplitude of the baseband signal after de-hopping.Finally, down-conversion was performed and the peak-to-peak amplitude of the quadrature demodulation was checked for exceeding the threshold value to achieve de-hopping for frequency hopping signals.The effectiveness and adaptability of the proposed scheme is verified by using two general-purpose SDR devices with a hopping rate of four hops per symbol period in a real channel with other continuous signals.…”
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  4. 184

    PSWF signal based continuous phase modulation and its spectrum performance analysis by Dawei YANG, Chuanhui LIU, Jiafang KANG

    Published 2020-11-01
    “…Prolate spheroidal wave function (PSWF) signals are the best energy-gathering signals in the time-frequency domain,here is an exploratory application of PSWF signals to continuous phase modulation technology.Firstly,the process of generating CPM modulated signals based on PSWF signals was described.Secondly,a calculation method for the power spectral density of CPM modulated signals based on PSWF using the autocorrelation function method was given.Finally,combined with numerical calculation and analysis,the power spectral density and signal occupied bandwidth characteristics of minimum frequency shift keying,sinusoidal frequency shift keying,Gaussian filtered minimum shift keying and CPM modulation signal based on Gaussian function were compared.Numerical calculation results show that the PSWF signal can obtain CPM modulation signal with better spectral performance and energy concentration,compared with rectangular pulse,raised cosine pulse,Gaussian pulse and Gauss-like pulse as the baseband frequency modulation signal of CPM.…”
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  5. 185

    Deep reinforcement learning-based resource joint optimization for millimeter-wave massive MIMO systems by LIU Qingli, LI Xiaoyu, LI Rui

    Published 2024-10-01
    “…The method was adopted in a three-stage strategy, firstly, an RF beamformer was constructed to reduce the hardware cost and total power consumption through a small number of RF chains; secondly, a baseband precoder was designed using the effective channel state information; and finally, a two-tier deep reinforcement learning architecture was designed and applied to realize dynamic discrete bandwidth and continuous power resource allocation. …”
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  6. 186

    Insights on the Permian tuff beds from the Saint-Affrique Basin (Massif Central, France): an integrated geochemical and geochronological study by Poujol, Marc, Mercuzot, Mathilde, Lopez, Michel, Bourquin, Sylvie, Bruguier, Olivier, Hallot, Erwan, Beccaletto, Laurent

    Published 2023-01-01
    “…The elemental geochemistry, the presence of inherited detrital zircons and the Hf signatures of the volcanic ones indicate the involvement of an old (Proterozoic and older) basement in the magma genesis; this crustal contribution becomes more prominent towards the top of the sedimentary succession.…”
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  7. 187

    Modulation recognition driven by signal enhancement by CHENG Fengyun, ZHOU Jin

    Published 2024-04-01
    “…To achieve recognition of debugging signals in complex channels, reconstructed signals representing global features were for training, and IQ baseband signals which experienced wireless fading were used for testing. …”
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  8. 188

    INTEGRASI BATAS SUCI TERHADAP TIPOLOGI RUANG BANGUNAN MASJID MODERN DI MAKASSAR by Marwati Marwati, Sutriani Sutriani

    Published 2019-06-01
    “…The results of the study were obtained first, the typology of the space of modern mosque buildings in Makassar consisted of  clean zone (prayer rooms, ablution rooms), transitional zone (sacred boundaries, foyer spaces and manager's office spaces) and non-clean zone (toilets, basement storage rooms feet, kitchen). …”
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  9. 189

    Mineralization and metallogenic model of the Laurani high-sulfidation epithermal deposit in northeastern Bolivian Altiplano by Fei Liu, Runsheng Han, Shuming Wen, Dong Zhao, Wenyao Li, Li Lei, Chaojian Qin, Yuxinyue Guo

    Published 2024-12-01
    “…Pb isotope signatures of Laurani ores (206Pb/204Pb = 18.2869–18.3568, 207Pb/204Pb = 15.6082–15.6337 and 208Pb/204Pb = 38.6937–38.7719) are consistent with those of the Arequipa Massif basement located beneath the Altiplano, indicating that Pb originates initially from the old, thickened lower crust of the Arequipa Massif. …”
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  10. 190

    Analysis of the focal relationship of level five leadership with school organizational excellence by Hosein Majooni, Siroos Ghanbari

    Published 2024-05-01
    “…Data collection was done based on five-level leadership questionnaire of Cham Asemani (2007), and Organizational Excellence of Amarloo (2018), whose Cronbach's alpha coefficient was 0.96 and 0.91, respectively. …”
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  11. 191

    Automatic Recognition of Authors Identity in Persian based on Systemic Functional Grammar by Fatemeh Soltanzadeh, Azadeh Mirzaei, Mohammad Bahrani, Shahram Modarres Khiabani

    Published 2024-09-01
    “…In this study, the effectiveness of systemic functional grammar (Halliday and Matthiessen, 2014) features in Persian authorship attribution was compared with that of function words. First, a corpus composed of documents written by seven contemporary Iranian authors was collected. …”
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  19. 199

    Development and internal validation of a nomogram for predicting cognitive impairment after mild ischemic stroke and transient ischemic attack based on cognitive trajectories: a pr... by Panpan Zhao, Panpan Zhao, Lin Shi, Guimei Zhang, Chunxiao Wei, Weijie Zhai, Yanxin Shen, Yongchun Wang, Zicheng Wang, Li Sun

    Published 2025-01-01
    “…The patients were categorized into two groups based on the LCGA. First, a difference analysis was performed, and further univariate and stepwise backward multifactorial logistic regression was performed. …”
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  20. 200

    Increased Accuracy of Emotion Recognition in Individuals with Autism-Like Traits after Five Days of Magnetic Stimulations by Pingping Liu, Guixian Xiao, Kongliang He, Long Zhang, Xinqi Wu, Dandan Li, Chunyan Zhu, Yanghua Tian, Panpan Hu, Bensheng Qiu, Gong-Jun Ji, Kai Wang

    Published 2020-01-01
    “…Resting-state functional connectivity (rsFC) between the rpSTS and the left cerebellum significantly decreased in the real group than the sham group after iTBS. At baseline, rsFC in the left cerebellum was negatively correlated with emotion recognition accuracy. …”
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