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Delineating Structural Features Related to Hydrothermal Alterations for Possible Mineralization in Share Area, Kwara State Nigeria Using Aeromagnetic Data
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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182
Identification of Hydraulic Connection Points between Different Confined Aquifers in the Liyazhuang Coal Mine
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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183
Scheme and experiment of fast frequency hopping communication system based on SDR
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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184
PSWF signal based continuous phase modulation and its spectrum performance analysis
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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185
Deep reinforcement learning-based resource joint optimization for millimeter-wave massive MIMO systems
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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186
Insights on the Permian tuff beds from the Saint-Affrique Basin (Massif Central, France): an integrated geochemical and geochronological study
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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187
Modulation recognition driven by signal enhancement
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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188
INTEGRASI BATAS SUCI TERHADAP TIPOLOGI RUANG BANGUNAN MASJID MODERN DI MAKASSAR
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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189
Mineralization and metallogenic model of the Laurani high-sulfidation epithermal deposit in northeastern Bolivian Altiplano
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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190
Analysis of the focal relationship of level five leadership with school organizational excellence
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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191
Automatic Recognition of Authors Identity in Persian based on Systemic Functional Grammar
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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Effect and safety of sivelestat on acute severe pancreatitis with systemic inflammatory response syndrome: a retrospective study
Published 2025-01-01“…There was no significant difference in baseline data at admission between the two groups. …”
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194
Neuropsychiatric Outcome of an Adolescent Who Received Deep Brain Stimulation for Tourette's Syndrome
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Effects of Diet Based on IgG Elimination Combined with Probiotics on Migraine Plus Irritable Bowel Syndrome
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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...
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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200
Increased Accuracy of Emotion Recognition in Individuals with Autism-Like Traits after Five Days of Magnetic Stimulations
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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