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Channel Characterization for 700 MHz DSRC Vehicular Communication
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Research on orthogonal multi-carrier underwater acoustic communication system based on fractional Fourier transform
Published 2012-08-01“…Aimed at the traditional OFDM communication system fails when the channel was frequency-selective,rapidly fading and had the Doppler effects,resulting in inter-carrier interference,a orthogonal multi-carrier system for underwater acoustic communication was proposed,which employed orthogonal signal basis of the chirp type corresponding to the fractional Fourier transform (FRFT) signal basis.The scheme used the orthogonal LFM signal as sub-carrier to modulate,which had same chirp rate but different center frequency with overlapped bandwidth,and used fractional Fourier transform for modulation and demodulation method to transmit information.For suppression of the multi-paths channel effect,the guard interval (GI) was used between signal data frame.And the position correction in fractional domain method combining with QDPSK was proposed to suppress the Doppler effects,which simplified the system complexity.The communication scheme had the characteristic of high communication rate,and the maximum rate was up to 3 600bit/s.The effectiveness and reliability of this system was verified through a large number of simulation and lake experiments.…”
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Emerging Themes in the Ecology and Management of North American Forests
Published 2010-01-01“…Several “needs” emerged from the discussions regarding approaches to the study of forest ecosystems, including (1) consideration of variable spatial and temporal scales, (2) long-term monitoring, (3) development of universal databases more encompassing of time and space to facilitate meta-analyses, (4) combining field studies and modeling approaches, (5) standardizing methods of measurement and assessment, (6) guarding against oversimplification or overgeneralization from limited site-specific results, (7) greater emphasis on plant-animal interactions, and (8) better alignment of needs and communication of results between researchers and managers.…”
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An Evaluation of English-to-Yoruba Translations of some Concepts by Selected Radio News Bulletins
Published 2021-12-01Get full text
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Artificial intelligence in thrombosis: transformative potential and emerging challenges
Published 2025-01-01Get full text
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Ensuring the Health and Safety of Indonesian School Children: Legal Protections in Snack Consumption
Published 2023-11-01Get full text
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Overview of development and challenges of attitude determination for rotary wing UAVs based on GNSS
Published 2025-02-01Get full text
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Clinical Scoring for Diagnosis of Acute Lower Abdominal Pain in Female of Reproductive Age
Published 2013-01-01“…The developed clinical score is comprised of (1) guarding or rebound tenderness, (2) pregnancy, (3) sites of abdominal tenderness, (4) leukocytosis, (5) peripheral neutrophils ≥75%, and (6) presence of diarrhea. …”
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Etude de cas : la bipédie des chimpanzés de la communauté de Sebitoli, Ouganda
Published 2022-03-01“…This method detected few records of charging (3) or carrying food (2). In contrast, most (11) of the orphan chimpanzee's bipedal behaviours involved carrying or handling objects. …”
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Formation of military position in the valuable system of cadets
Published 2019-06-01Get full text
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Conservative Treatment of Spontaneous Rectus Sheath Hematomas: Single Center Experience and Literature Review
Published 2019-01-01“…Based on the computed tomography findings, the disease was classified as Type 2 found in 9 (64.3%) patients, Type 1 in 3 (21.4%) patients, and Type 3 in 2 (14.2%) patients. …”
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