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  1. 441

    Cognitive Multihop Wireless Sensor Networks over Nakagami- Fading Channels by Xing Zhang, Jia Xing, Zhi Yan, Yue Gao, Wenbo Wang

    Published 2014-08-01
    “…Considering the effect of imperfect channel state information (CSI), we study the performance of a cluster-based cognitive multihop wireless sensor network with decode-and-forward (DF) partial relay selection over Nakagami- m fading channels. …”
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  2. 442
  3. 443
  4. 444

    Study on Prediction of Outburst Risk of Excavation Face by Initial Gas Emission by Lu Gao, Xiangtao Kang, Meng Tang, Jinguo Hu, Jiachi Ren, Cunliu Zhou

    Published 2022-01-01
    “…In order to improve the accuracy of coal and gas outburst risk prediction for an excavation face, an outburst equilibrium equation for the excavation face was established based on the Mohr–Coulomb criterion to predict the coal and gas outburst risk for the excavation face. …”
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  5. 445

    Upper processing gain bound of the spreading signal in multipath fading channels by Wan-zhi MA, Jun WANG, You-xi TANG

    Published 2012-03-01
    “…Using the joint algorithm of coherent detection and non-coherent detection,the upper processing gain bound of the spreading signal,which is two-dimensional spread spectrum signal relative to BPSK and transmitted in rich scattering multipath fading channel,was sought.Firstly,the expression of the processing gain of the spreading signal was calculated.Secondly,with increasing signal bandwidth or symbol period unlimitedly,the processing gain was bounded.At last,it was obtained that the upper processing gain bound is determined by the channel parameters and signal noise io.By analysis and simulation,the processing gain of the spreading signal,relative to BPSK and transmits in rich scattering multipath fading channel,is not more than 30dB,when the signal noise ratio is 20dB,the maximum doppler shift is 100Hz,and the negative exponential factor is 5×10<sup>−6</sup>.…”
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  6. 446

    Kruskal-Wallis-Based Computationally Efficient Feature Selection for Face Recognition by Sajid Ali Khan, Ayyaz Hussain, Abdul Basit, Sheeraz Akram

    Published 2014-01-01
    “…Face recognition in today’s technological world, and face recognition applications attain much more importance. …”
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  7. 447
  8. 448

    Stress Distribution and Fluctuation Cycle on the Rack Face of the Rock Cutting Tool by Xiaofeng Yang, Yongchao Xue, Jiaheng Zhou

    Published 2019-01-01
    “…The distribution of the stress field on the rack face has significant impacts on the performance and service life of the rock cutting tool. …”
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  9. 449

    Main methodological challenges faced by Youth and Adult Education (EJA) teachers by Alcemir Horácio Rosa, Francisco Willan Costa dos Santos, Daniel Nascimento e Silva, Marcus Marcelo Silva Barros

    Published 2022-12-01
    “… The present work identifies the main methodological challenges teachers face in developing Youth and Adult Education (EJA) teaching-learning process. …”
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  10. 450
  11. 451

    Improved Pilot-Aided Channel Estimation for MIMO-OFDM Fading Channels by J. Mar, Chi-Cheng Kuo, M. B. Basnet

    Published 2013-01-01
    “…An improved pilot-aided channel estimation scheme is proposed to enhance the channel estimation accuracy of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) fading channels. Based on the adaptive path number selection mechanism, the number of paths can be scalable and adaptively changed with the characteristics of MIMO-OFDM fading channels. …”
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  12. 452

    Accurate Design Method of the Skiving Tool for the Orthogonal Spur Face Gear by Tan Yongxu, Peng Xianlong

    Published 2024-08-01
    Subjects: “…Orthogonal spur face gear…”
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  13. 453

    Fast Second-Order Orthogonal Tensor Subspace Analysis for Face Recognition by Yujian Zhou, Liang Bao, Yiqin Lin

    Published 2014-01-01
    “…Tensor subspace analysis (TSA) and discriminant TSA (DTSA) are two effective two-sided projection methods for dimensionality reduction and feature extraction of face image matrices. However, they have two serious drawbacks. …”
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  14. 454

    La Lutte des classes face à l'internationalisme sportif. by Lorenzo Jalabert D'Amado

    Published 2017-04-01
    “…With the analysis of this communist stance we seek to participate in the efforts to historicize the first edition of the now FIFA's flagship tournament. …”
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  15. 455

    Integral and inclusive education in the Brazilian reality: challenges to be faced in teacher training by José Carlos Miguel, Gustavo Cunha de Araújo

    Published 2024-12-01
    “…This is a qualitative research on the subject, based on the descriptors inclusive education, integral education, educational inequality, educational policies and teacher training in the SciELO Database – Scientific Electronic Library Online – and in the BDTD – Brazilian Digital Library of Theses and Dissertations, we selected the texts that are closest to the ideas listed above to define the article. …”
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  16. 456
  17. 457

    COVID-19 Preventative Measures: Do-It-Yourself Cloth Face Coverings by Michelle D. Danyluk, Natalie Seymour, Mary Yavelak, Candice Christian, Ben Chapman

    Published 2020-04-01
    “… This one-page full-color handout depicts essential components of face coverings for non-medical use and includes the following information: • Cloth face cover designs • Selecting Fabric • Caring for a Cloth Face Covering • Sewing Cloth Face Coverings for Donation FSHN20-31/FS373: COVID-19 Preventative Measures: Do-It-Yourself Cloth Face Coverings (ufl.edu) …”
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  18. 458

    Receiver Diversity Combining Using Evolutionary Algorithms in Rayleigh Fading Channel by Mohsen Akbari, Mohsen Riahi Manesh, Ayman A. El-Saleh, Ahmed Wasif Reza

    Published 2014-01-01
    “…The proposed algorithm adjusts the combiner weights of the received signal components in such a way that maximizes the SNR and minimizes the bit error rate (BER). …”
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  19. 459
  20. 460

    Arthur et guerre du Saint-Graal : égéries de Fate/ by Marine Massenzio de Haro

    Published 2024-12-01
    “…La licence Fate/ détenue par l’entreprise TYPE-MOON, s’ouvre en 2004 avec le jeu vidéo Fate/Stay night qui offre une réécriture de la quête du graal et propose parmi ses protagonistes une version féminine du roi Arthur. …”
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