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  1. 16641

    Quantum tug of war between randomness and symmetries on homogeneous spaces by Rahul Arvind, Kishor Bharti, Jun Yong Khoo, Dax Enshan Koh, Jian Feng Kong

    Published 2025-01-01
    “…Transitioning further, we explore pseudorandomness, defining pseudorandom unitaries and states within homogeneous spaces. Finally, as a practical demonstration of our findings, we study the expressibility of quantum machine learning Ansätze in homogeneous spaces. …”
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  2. 16642

    Niobium Pentoxide as an Acid Catalyst: An Overview by Ana Paula de Melo Guedes, Débora Luísa Rosendo Tomé De Miranda, Amanda Duarte Gondim, Claudio Gabriel Lima Junior

    Published 2024-10-01
    “…This review explores the potential of niobium pentoxide as an acid catalyst, addressing advances in synthesis techniques, surface modifications, and combinations with other materials to enhance its catalytic performance in sustainable applications, such as biomass conversion and biofuel production, opening new pathways for the production of greener chemicals. Finally, the future perspectives of niobium pentoxide - based catalysts in green chemistry are discussed. …”
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  3. 16643

    Rate splitting based robust secure transmission scheme in RIS-assisted satellite-terrestrial integrated network by Bai ZHAO, Min LIN, Shengjie XIAO, Ming CHENG, Yifan FENG, Lvxi YANG

    Published 2023-12-01
    “…Firstly, considering a reconfigurable intelligent surface (RIS) assisted satellite terrestrial integrated network, the satellite employed the rate splitting multiple access technique to serve multiple earth stations in the presence of multiple eavers-droppers(Eves), while the terrestrial network leveraged multicast technique to serve many ground users with the assist of RIS.Secondly, assuming that only the Eves’ imperfect channel state information could be obtained, a joint optimization problem was formulated to minimize the total transmit power, while ensuring the quality-of-service requirement for all users, and adhering to intercept probabilistic constraints.To tackle this noncom vex problem, the S-procedure and the successive convex approximation approach were employed to convert the intercept probabilistic constraints into solved ones.And then a nuclear norm-based penalty function was employed to propose a robust joint algorithm to obtain the robust beamforming weight vectors and transmit power.Finally, the simulation results demonstrate the effectiveness and superiority of the proposed transmission scheme.…”
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  4. 16644

    Multi relay node selection strategy for energy capture collaborative relay network by Xian-zhong TIAN, Min GUO, Jia-cun HE, Gao LIU, Yi-nan ZHU

    Published 2017-11-01
    “…An energy capture cooperative relay network was studied.Unlike traditional cooperative relay networks,the relay nodes generally did not have a fixed energy supply but could carry out energy capture.For this network,a natural question was how to determine whether the relay nodes perform energy capture or data forwarding,and how to select the relay node to assist the information transmission between the source node and the destination node.Based on this problem,a multi-relay node selection scheme was proposed,which select the operation according to the energy of the current time slot of the relay node.In each time slot,the relay node that meet the battery threshold requirements was selected to assist in transmission.The Markov chain was used to model the charging and discharging process of the relay node battery,and the probability of interruption and throughput of the wireless network was obtained.And the value of the battery threshold when the throughput was maximized,that is,when the probability of network breakage was minimum was solved.Finally,the advantages of this scheme were verified by numerical experiments.…”
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  5. 16645

    Block-based fair payment scheme under delegation computation by Ta LI, Youliang TIAN, Kang XIANG, Hongfeng GAO

    Published 2020-03-01
    “…In the traditional delegation computation,due to the self-interested behavior of both participants,there were some problems such as the denial of the principal and the dishonest calculation by the computing party.In the payment phase,a third party was required to ensure the fairness of the payment,which led to extra costs and risks of disclosure of participants' privacy.Game theory was used to analyze the Nash equilibrium solution between the two parties in the payment process,and a fair payment protocol based on time commitment of bitcoin was proposed.Firstly,the bitcoin time commitment technology was used to ensure the fairness of payment.Secondly,the decentralized feature of block chain was used to replace the third-party service to protect the privacy of all parties and realize the source of responsibility.Finally,the scheme was analyzed from the perspective of security and correctness,which proved that the participants choose behavioral strategies honestly in the payment process.The scheme proposed in this paper not only solved the problem of fair payment in traditional delegation computation,but also protected the privacy of participants.…”
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  6. 16646

    A Fractional-Order Model for HIV Dynamics in a Two-Sex Population by Fatmawati, Endrik Mifta Shaiful, Mohammad Imam Utoyo

    Published 2018-01-01
    “…Using the Adams-type predictor-corrector method, we then perform some numerical simulations for variation values of the order of the fractional derivative. Finally, the effects of various antiretroviral therapy (ART) treatments are studied and compared with numerical approach.…”
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  7. 16647

    Least-Squares Residual Power Series Method for the Time-Fractional Differential Equations by Jianke Zhang, Zhirou Wei, Lifeng Li, Chang Zhou

    Published 2019-01-01
    “…Thirdly, a linear combination of the first few terms as an approximate solution is used, which contains unknown coefficients. Finally, the least-squares method is proposed to obtain the unknown coefficients. …”
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  8. 16648

    ERK activation waves coordinate mechanical cell competition leading to collective elimination via extrusion of bacterially infected cells by Lara Hundsdorfer, Marie Muenkel, Raul Aparicio-Yuste, Julio Cesar Sanchez-Rendon, Maria Jose Gomez-Benito, Aylin Balmes, Tilman E. Schäffer, Ana Velic, Yi-Ting Yeh, Iordania Constantinou, Kathryn Wright, Gizem Özbaykal Güler, Dominik Brokatzky, Boris Maček, Serge Mostowy, Effie E. Bastounis

    Published 2025-01-01
    “…Here, using in vitro (epithelial monolayers) and in vivo (zebrafish larvae) models of infection with L. monocytogenes or Shigella flexneri, we explored the role of extracellular-signal-regulated kinase (ERK) activity waves in coordinating the mechanical battle between infected and surrounder uninfected cells that leads to CICE. …”
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  9. 16649

    Sida : la politisation d’une épidémie [1984] by Dennis Altman

    Published 2013-06-01
    “…After criticizing temptations among the gay movement to pose as victims, he also warns against the risks of scapegoating and greater surveillance of the gay population. Finally, he calls for a “deshomosexualization” of Aids so that the discussion may shift to one that sees the epidemic as primarily a medical and health care issue.…”
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  10. 16650

    Complex Dynamical Behaviors in a Predator-Prey System with Generalized Group Defense and Impulsive Control Strategy by Shunyi Li

    Published 2013-01-01
    “…Further, the importance of the impulsive period, the released amount of mature predators and the degree of group defense effect are discussed. Finally, the biological implications of the results and the impulsive control strategy are discussed.…”
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  11. 16651

    The effect of protein oxidation on the formation of advanced glycation end products after chicken myofibrillar protein glycation by Zongshuai Zhu, Anthony Pius Bassey, Ming Huang, Iftikhar Ali Khan

    Published 2023-09-01
    “…Pearson’s correlation indicated that MPG structure modification (unfolding and degradation) induced by protein oxidation were significantly positively correlated with AGEs concentration (P < 0.05). Finally, a mechanism was proposed to hypothesize the effect of protein oxidation on the formation of AGEs under MPG conditions.…”
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  12. 16652

    Research of the Traction Control of Flexible Work Surface Belt Drive of Heavy Duty Construction Vehicle by Lou Jie

    Published 2015-01-01
    “…To reduce the energy consumption of heavy duty construction vehicle pollution,and improve the capacity of the complex conditions of the vehicle,the multi-metal complex with stepless transmission and front / rear axle torque distribution device in the traditional drive system are imported,a new mathematical model of heavy duty four-wheel heavy duty construction vehicle is established,finally,a four-wheel drive heavy duty construction vehicle traction integrated control strategy is obtained.The results show that large ratio change conditions required for the engine reaches maximum speed of the longest and highest speed reached a minimum;small ratio change conditions can achieve high speed,the speed curve more smooth and steady acceleration phase speed change under the conditions of large ratio rate change;after the introduction of traction control system,slip phenomenon can be well suppressed over a driving wheel,the drive wheel speed control range of the space in the target vehicle speed.…”
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  13. 16653

    Study on remote sensing satellites random access to internet constellation and on-orbit intelligent processing by Xiaoyu CHANG, Weijia ZHANG, Xudong1 LI, Xiaonan ZHANG, Gang WANG, Gang JIA

    Published 2022-04-01
    “…The low earth orbit (LEO) satellite Internet constellation is a hot spot in current global research.And it is highly anticipated that the LEO satellite Internet constellation supports random access to remote sensing satellites and direct on-orbit information processing.However, due to the different orbital heights, the difficult access problems of the bidirectional highly dynamic heterogeneous constellation will be caused.Firstly, the random access scenario under different orbit characteristics and satellite numbers of LEO satellite Internet constellation was set up, and the impact of the spatiotemporal discontinuous visibility and Doppler frequency shift on the remote sensing satellite access performance was focused on.Secondly, based on the characteristics of the random access scenario, the process of on-orbit processing tasks with different delays and the allocation of satellite-ground functions were analyzed.Finally, the problems existing in the current on-orbit intelligent processing algorithm and the focus of future research were expounded, so as to provide reliable theoretical support for the development and applications of LEO satellite Internet constellation and remote sensing satellites in the future.…”
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  14. 16654

    Study on Application of CYCBD based on PSO in Fault Feature Extraction of Rolling Bearing by Yutao Liu, Huer Sun

    Published 2021-02-01
    “…Then, the optimal solution of filter length and cycle frequency is iteratively found by using crest factor of envelope spectrum(EC) as the objective function of PSO. Finally, by applying the optimal solution to CYCBD and conducting envelope demodulation analysis on the enhanced signals, the fault characteristic frequency of bearing signals can be accurately obtained. …”
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  15. 16655

    Regeneration of Spent Lubricant Refining Clays by Solvent Extraction by Yan-zhen Wang, Hai-long Xu, Li Gao, Meng-meng Yan, Hong-ling Duan, Chun-min Song

    Published 2015-01-01
    “…The spent clay was first extracted using petroleum ether (90–120°C) to obtain ideal oil and then extracted with a mixed solvent of petroleum ether (90–120°C) and ethanol (95 v%) two or three times to obtain nonideal oil before being extracted with ethanol and water. Finally, the clay was dried at 130°C to obtain regenerated clay. …”
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  16. 16656

    Mini Review: Anticholinergic Activity as a Behavioral Pathology of Lewy Body Disease and Proposal of the Concept of “Anticholinergic Spectrum Disorders” by Koji Hori, Kimiko Konishi, Misa Hosoi, Hiroi Tomioka, Masayuki Tani, Yuka Kitajima, Mitsugu Hachisu

    Published 2016-01-01
    “…We also propose the concept of “anticholinergic spectrum disorders,” which encompass a variety of conditions, including AD, Lewy body disease, and delirium. Finally, we suggest the prescription of cholinesterase inhibitors to patients in this spectrum of disorders to abolish AA by upregulating ACh.…”
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  17. 16657

    A mini-review on three-electrode configuration for Solid Oxide Cells by Jing Zhu, Bin Chen, Meng Ni, Haoran Xu

    Published 2025-06-01
    “…Methods for validating experimental data and strategies to enhance reliability are also presented. Finally, this paper outlines prospects for further research and development in three-electrode configurations.…”
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  18. 16658

    Heuristic Sarsa algorithm based on value function transfer by Jianping CHEN, Zhengxia YANG, Quan LIU, Hongjie WU, Yang XU, Qiming FU

    Published 2018-08-01
    “…With the problem of slow convergence for traditional Sarsa algorithm,an improved heuristic Sarsa algorithm based on value function transfer was proposed.The algorithm combined traditional Sarsa algorithm and value function transfer method,and the algorithm introduced bisimulation metric and used it to measure the similarity between new tasks and historical tasks in which those two tasks had the same state space and action space and speed up the algorithm convergence.In addition,combined with heuristic exploration method,the algorithm introduced Bayesian inference and used variational inference to measure information gain.Finally,using the obtained information gain to build intrinsic reward function model as exploring factors,to speed up the convergence of the algorithm.Applying the proposed algorithm to the traditional Grid World problem,and compared with the traditional Sarsa algorithm,the Q-Learning algorithm,and the VFT-Sarsa algorithm,the IGP-Sarsa algorithm with better convergence performance,the experiment results show that the proposed algorithm has faster convergence speed and better convergence stability.…”
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  19. 16659

    Estimating Risk of Natural Gas Portfolios by Using GARCH-EVT-Copula Model by Jiechen Tang, Chao Zhou, Xinyu Yuan, Songsak Sriboonchitta

    Published 2015-01-01
    “…Third, multivariate Gaussian copula and Student t-copula are employed to describe the natural gas portfolio risk dependence structure. Finally, we simulate N portfolios and estimate value at risk (VaR) and conditional value at risk (CVaR). …”
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  20. 16660

    Optimization Analysis of Gear Micro Parameters of Hybrid Transmission Cases by Li Qinyi, Chen Yiqing, Zhang Xi, Wang Hui, Luo Qin

    Published 2023-04-01
    “…The analysis results show that the transmission error of the gear is obviously reduced after micro-modification, and the contact stress nephogram of the tooth surface has been improved to a great extent, which plays an active role in reducing the vibration and noise of the gear. Finally, the data collection and comparative analysis of vibration and noise of gears in transmission are carried out. …”
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