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  1. 43141

    Network moving target defense technique based on optimal forwarding path migration by Cheng LEI, Duo-he MA, Hong-qi ZHANG, Qi HAN, Ying-jie YANG

    Published 2017-03-01
    “…Moving target defense is a revolutionary technology which changes the situation of attack and defense.How to effectively achieve forwarding path mutation is one of the hotspot in this field.Since existing mechanisms are blindness and lack of constraints in the process of mutation,it is hard to maximize mutation defense benefit under the condition of good network quality of services.A novel of network moving target defense technique based on optimal forwarding path migration was proposed.Satisfiability modulo theory was adopted to formally describe the mutation constraints,so as to prevent transient problem.Optimization combination between routing path and mutation period was chosen by using optimal routing path generation method based on security capacity matrix so as to maximum defense benefit.Theoretical and experimental analysis show the defense cost and benefit in resisting passive sniffing attacks.The capability of achieving maximum defense benefit under the condition of ensuring network quality of service is proved.…”
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  2. 43142

    TRANSFORMATION OF THE EDUCATION SYSTEM: REASONS, TENDENCIES, PERSPECTIVES by Irina V. Veshneva, Rustam A. Singatulin

    Published 2016-12-01
    “…Application of virtual reality technology enables to enhance the training effectiveness by dozens of times. …”
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  3. 43143
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  5. 43145

    Research and application exploration of threat intelligence system of telecom operators by Haitao ZHANG, Yi JIANG, Shijie ZHU, Qi CHEN

    Published 2022-12-01
    “…With the increasing inequality of network attack and defense in the Internet era, threat intelligence has become one of the important tools to narrow this gap.Based on the analysis of the research status of threat intelligence at home and abroad, a set of construction methods of threat intelligence systems suitable for telecom operators were proposed, including six steps: intelligence planning, intelligence production, intelligence analysis, intelligence management, intelligence sharing and intelligence application.Meanwhile a set of multi-source intelligence fusion assessment mechanisms was presented, and the technologies and methods were systematically expounded involved in the four stages of intelligence aggregation analysis, intelligence reputation analysis, intelligence correlation analysis and intelligence aging analysis, so as to help the telecom operators build the ability of intelligence fusion analysis.At the same time, the principles of intelligence production and synchronous application were given for intrusion and loss intelligence, which provided a useful reference for telecom operators to apply threat intelligence technology to build a security protection system.…”
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  6. 43146
  7. 43147

    Optimization scheme for the SWIPT-NOMA opportunity cooperative system by Taoshen LI, Qianli NING, Zhe WANG

    Published 2020-08-01
    “…In order to improve the spectrum efficiency and performance of the simultaneous wireless information and power transfer (SWIPT) system,the non-orthogonal multiple access (NOMA) technology was introduced to construct the SWIPT-NOMA opportunistic relay system model.The fixed signal power allocation couldn’t adjust with other parameters of the system,and then affect the outage probability and resource utilization of the system.Therefore,a joint signal power and time allocation scheme was proposed to improve the system outage performance.In the proposed scheme,the expression of signal power distribution was obtained under the condition of satisfying the quality of service (QoS) rate of the node with poor channel state,and then the relation between the interruption probability and the time distribution of the system was deduced,the time allocation parameter was adjusted to affect the outage probability.The simulation results show that the constructed NOMA system has better outage performance than orthogonal multiple access (OMA) system,and the proposed joint signal power and time allocation outage scheme can effectively reduce the interruption probability of the system and improve the system performance.…”
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  8. 43148

    Network traffic anomaly detection method based on multi-scale characteristic by Xueyuan DUAN, Yu FU, Kun WANG, Taotao LIU, Bin LI

    Published 2022-10-01
    “…Aiming at the problem that most of the traditional network traffic anomaly detection methods only pay attention to the fine-grained features of traffic data, and make insufficient use of multi-scale feature information, which may lead to low accuracy of anomaly detection results, a network traffic anomaly detection method based on multi-scale features was proposed.The original traffic was divided into sub-sequences with multiple observation spans by using multiple sliding windows of different scales, and the multi-level sequences of each sub-sequence were reconstructed by wavelet transform technology.Multi-level reconstructed sequences were generated by Chain SAE through feature space mapping, and a preliminary judgment of abnormality was made by the classifiers of each level according to the errors of the reconstructed sequences.The weighted voting strategy was adopted to summarize the preliminary judgment results of each level to form the final result judgment.Experimental results show that the proposed method can effectively mine the multi-scale feature information of network traffic, and the detection performance of abnormal traffic is obviously improved compared with traditional methods.…”
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  9. 43149

    Who Is Interested in Purchasing Smart Irrigation Systems? by Hayk Khachatryan, Alicia Rihn, Caroline Warwick, Michael Dukes

    Published 2019-09-01
    “…The adoption of smart irrigation technologies into residential landscapes, however, has been slow. …”
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  10. 43150
  11. 43151

    Research and evaluation of sparse array for massive MIMO by Mengting LOU, Jing JIN, Hanning WANG, Qixing WANG, Jiangzhou WANG

    Published 2021-09-01
    “…Massive multiple-input multiple-output (mMIMO) enables higher spectrum efficiency by deploying a large number of antenna elements.However, mMIMO will bring a substantial increase in the number of radio frequency (RF) channel, which will result in a sharp increase in cost.Therefore, it is necessary to design mMIMO with comprehensive consideration of the trade-off between the performance and the cost.Sparse array technology can approach the performance of the uniform array with less number of antenna elements by optimizing the position distribution and excitation amplitudes of the antenna elements, thereby reducing the number of RF channels and controlling the cost, and achieving a better cost-effective balance.Both link-level and system-level evaluations and analysis of sparse array based mMIMO that targets for 6G were performed under realistic simulation settings.The results show that with little performance loss, the sparse array based mMIMO can significantly reduce the number of antenna elements and the cost of base station infrastructure.…”
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  12. 43152

    30 years of Journal of Synchrotron Radiation and synchrotron science by S. Samar Hasnain

    Published 2025-01-01
    “…We also highlight some of the well cited papers for each of the five-year-periods during these 30 years and demonstrate how the journal has become the natural home for all aspects of synchrotron radiation science and technology.…”
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  13. 43153
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  15. 43155

    Cancer Classification Using Pattern Recognition and Computer Vision Techniques by Haddou Bouazza Sara, Haddou Bouazza Jihad

    Published 2024-01-01
    “…The rapid advancement of DNA microarray technology has significantly contributed to the classification of various cancers, particularly leukemia. …”
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  16. 43156
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  18. 43158

    Multiple pregnancy. Case report. by Práxedes Regla Rojas Quintana

    Published 2009-11-01
    “…Tubaric permeability with hydrotubation was first accomplished, then ovulation and spermatogenesis with clomiphene citrate and then low-technology fertilization was performed, resulting in a quadruple pregnancy, which satisfactorily arrived to full term at 34 weeks of gestation. …”
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