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  1. 131361
  2. 131362

    A multi-band spectrum sensing method based on sticky hidden Markov model by Zhongjie JIA, Ming JIN, Xiaoqun SONG

    Published 2021-01-01
    “…Existing multi-band spectrum sensing methods often use the sparsity of broadband spectrum.However, high spectrum occupancy rate of primary users degrades their performance severely.To address this issue, a novel multi-band spectrum sensing method was proposed by exploiting the state correlation among adjacent frequency bands.Firstly, a sticky hidden Markov model (SHMM) was established by regarding the multi-band states and measured energies as hidden and observed variables.In the SHMM, a sticky factor was introduced to represent the state correlation among adjacent frequency bands.Secondly, iterative expressions for the parameters of SHMM were derived.Finally, multi-band spectrum sensing was implemented by obtaining the posterior mean of observations from every frequency bands.Simulation results show that the proposed method outperforms existing methods, and when the false alarm probability is 0.1, the average frequency band occupancy rate is 50%, and the average signal-to-noise ratio is -12 dB, the detection probability can reach close to 0.99, which is about 30% higher than the detection probability of other methods.In addition, the proposed method had a faster convergence rate than existing methods and therefore has lower computational complexity.…”
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  3. 131363

    Study on the User Density Identification via Improved Whale Optimization Algorithm in Device-to-Device Communication by Yao Zhang, Zhongliang Deng, Aihua Hu

    Published 2019-01-01
    “…System throughput after resource allocation exhibits a linear relationship with the number of users. Therefore, the D2D user density areas are accurately identified via the throughput value. …”
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  4. 131364

    THE (UN)SILENT ENEMY: HOW INDONESIAN PUBLIC OPINION IS UNDERMINING NATIONAL DEFENSE by Febry Triantama, Tafarel Sebrio Indradi Abdul, Avelitra Fitrianni Rayasti

    Published 2024-12-01
    “…Through analysis using theories related to the determinants of the defense budget, this article concludes that the stagnation of the Indonesian defense budget is caused by low public support for increasing the defense budget. …”
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  5. 131365

    Influence of winter Saharan dust on equatorial Atlantic variability by Ignasi Vallès-Casanova, Ori Adam, Marta Martín Rey

    Published 2025-01-01
    “…Winter Saharan dust is therefore an important contributor to equatorial Atlantic variability, with cross-regional implications.…”
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  6. 131366

    al-Masa’il al-Nahwiyyah (Dirasah Taqabuliyyah Baina Madrasah al-Bashrah wa al-Kufah) by Roviin Roviin

    Published 2018-08-01
    “…As a result, a new generation emerged that could not preserve the authenticity of its language. Therefore, the Arabs became distorted from the authenticity of their language. …”
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  7. 131367
  8. 131368
  9. 131369
  10. 131370

    Protective Effect of Rosa roxburghii Compound Plant Beverage on Acute Alcohol-induced Liver Injury in Mice by Zhengfang QI, Donghai LI, Yichun SUN, Xiaosheng YANG, Juan YANG, Rongrong ZHANG, Yu WANG, Xiong PAN, Chaoju ZHANG, Lilang LI

    Published 2025-02-01
    “…The liver pathological section indicated that the RTCPB groups could alleviate the liver injury, especially for high dose group of RTCPB. Therefore, RTCPB possessed the protective effects on alcohol-induced acute liver injury.…”
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    Article
  11. 131371

    Investigating the Effectiveness of Technology-Enhanced Language Learning Tools in Supporting Second Language Acquisition by Christiana Darkoah, Levina Nyameye Abunya, Edward Owusu, Victoria Ogunnike Faleke

    Published 2024-12-01
    “…Employing a qualitative research approach with a corresponding phenomenological research design, the study conducted semi-structured interviews with twenty-five out of forty-three learners in a basic three class. Through thematic data analysis, the study revealed a rising trend of learners utilizing technology-enhanced language learning tools beyond conventional classrooms, indicating a shift towards integrated and personalized language learning. …”
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  12. 131372
  13. 131373

    Periodic Solutions for a Semi-Ratio-Dependent Predator-Prey System with Delays on Time Scales by Xiaoquan Ding, Gaifang Zhao

    Published 2012-01-01
    “…With the help of a continuation theorem based on coincidence degree theory, we establish necessary and sufficient conditions for the existence of periodic solutions. …”
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  14. 131374

    TRADITIONAL FASHION INDUSTRY AND JUKUN CULTURE, NORTH CENTRAL NIGERIA by Bello Zakariya Abubakar, Hamisu Sani Ali

    Published 2022-05-01
    “…In the case of Jukun people of Central Nigeria, they are known for their “Akya” wrapper clothes which are confined to them alone. Therefore, the fundamental concern of this paper is the methods and processes involved in the production of Jukun “Adire” clothes so to speak; Challenges in the production and marketing. …”
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  15. 131375

    Dekonstrukcja nacjonalizmu w wybranych pracach Milicy Tomić by Aleksandra Czarny

    Published 2025-02-01
    “…The paper discusses the artistic and conceptual strategies of the deconstruction of nationalism in the selected works of contemporary Serbian artist, Milica Tomić (b. 1960) by interpreting them from a hitherto overlooked perspective of Derridian deconstructivism. …”
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  16. 131376

    Un nouvel essor sonore de la bande dessinée en France (2019-2023) by Benoît Glaude

    Published 2024-11-01
    “…Cette contribution au dossier thématique de Comicalités sur « La bande dessinée à voix haute » vise à documenter l’essor sonore que la bande dessinée connaît, en France, entre 2018 et 2023. …”
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  17. 131377
  18. 131378

    Investigating Ramifications of Climate Change on Farming Practices and Sustainable Livelihood Preferences for Farmers in Tropical Regions by Timothy O. Ogunbode, Timothy A. Akinkuolie, Victor O. Oyebamiji

    Published 2024-01-01
    “…Further studies are suggested on enhancing farmers’ livelihood to keep them in agriculture in the CC era.…”
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  19. 131379

    Homeostatic T Cell Proliferation after Islet Transplantation by Paolo Monti, Lorenzo Piemonti

    Published 2013-01-01
    “…In this review, we will discuss how homeostatic T cell proliferation can support autoimmunity recurrence after islet transplantation and how it can be targeted by new therapeutic approaches.…”
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  20. 131380

    Evidence-based policy-making in sports funding using a data-driven optimization approach. by Jan Hurt, Liuhuaying Yang, Johannes Sorger, Thomas J Lampoltshammer, Nike Pulda, Ursula Rosenbichler, Stefan Thurner, Peter Klimek

    Published 2024-01-01
    “…Our results suggest that the impact of public funding strategies can be substantially increased by tailoring them to regional socio-economic characteristics in an evidence-based and individualized way.…”
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