Reconfigurable intelligent surface assist wireless channel estimation algorithm in Internet of vehicles environment by Rong ZENG, Xiao HANG

“…Aiming at the problem that multi-user channel estimation assisted by reconfigurable intelligent surface (RIS) in the uplink Internet of vehicles environment, a location assisted compressive sensing channel estimation algorithm was proposed.Based on the location information of the communication equipment, a single RIS-assisted single-user communication model was built, and the optimal phase shift matrix was derived according to the logical relationship between the beam angle of departure (AOD) and the angle of arrival (AOA).The perception matrix was constructed and channel estimation was performed, and finally it was extended to multi-user scenarios and solved iteratively.The optimal RIS phase shift matrix was solved based on the position information obtained by the Internet of vehicles technology, which reduced the additional training overhead of the channel and further reduces the complexity of the channel estimation.Simulation results show that the proposed algorithm based on location information has high channel estimation performance.…”
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Implementation of MeCUE 2.0 Method in Evaluating MyTelkomsel User Experiencel by Hestiana Dela Arum, Ali Ibrahim

“…The growth of telecommunications technology and increased smartphone usage highlights the importance of apps that efficiently meet user needs. …”
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ACADEMIC WRITING AND ITS DEVELOPMENT IN RUSSIA: GENRE APPROACH by T. В. Alenkina

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Global Existence and Large Time Behavior of Solutions to the Bipolar Nonisentropic Euler-Poisson Equations by Min Chen, Yiyou Wang, Yeping Li

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Electronic medical record data sharing scheme based on searchable encryption via consortium blockchain by Shufen NIU, Wenke LIU, Lixia CHEN, Caifen WANG, Xiaoni DU

“…Considering that it was difficult to share medical record data among different medical institutions in cloud storage,an electronic medical record data sharing scheme based on searchable encryption on blockchain was proposed.In order to realize the secure storage and sharing of electronic medical records in the scheme,the patient’s electronic medical record ciphertext was stored in the hospital server,the ciphertext hash value was stored in the private blockchain,and the keyword index was stored in the consortium blockchain.Searchable encryption was used to implement secure search of keywords in the consortium blockchain,and proxy re-encryption technology was used to realize the sharing of electronic medical records of patients by other data users.Security analysis shows that the proposed scheme can achieve ciphertext security and keyword security.Moreover,the performance of the scheme was analyzed by function analysis,computational efficiency analysis and numerical simulation.The performance analysis shows that the scheme can achieve high computational efficiency.…”
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Optimized scalable Byzantine fault tolerance algorithm by Sicheng HAN, Xiaorong ZHU, Xiuxian ZHANG

“…Blockchain is a decentralized ledger which provides trust to both parties which distrust each other in a transaction.Blockchain initially served as the underlying framework that underpins bitcoin and has increasingly become a disruptive new technology in recent years.Consensus algorithm is one of the core technologies of blockchain.Without a consensus algorithm,the state consistency among distributed nodes cannot be achieved.The practical Byzantine fault tolerance (PBFT) algorithm was briefly introduced,which was a commonly used consensus algorithm in consortium blockchain.An optimized and scalable algorithm based on it was proposed.The improved algorithm mainly reduced the algorithm complexity and allowed consensus nodes to join and exit the system.Simulation results show that the improved algorithm can significantly reduce the transaction consensus completion time and the number of communication times between nodes,so as to increase the throughput of the whole system while supporting more nodes and reducing the system communication overhead and CPU computing resource consumption.…”
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Customizable Restoration in Multi-Degradation Scenarios: Joint Deraining and Low-Light Image Enhancement via Perceptual Decoupling by Zhiyong He

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Curvature-Restored Gauge Invariance and Ultraviolet Naturalness by Durmuş Ali Demir

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Prospects for Open Heavy Flavor Measurements in Heavy Ion and p+A Collisions in a Fixed-Target Experiment at the LHC by Daniel Kikoła

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Optimal Asset Allocation for CRRA and CARA Insurers under the Vasicek Interest Rate Model by Hanlei Hu, Shaoyong Lai, Hongjing Chen

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Finite-Time Stabilization of Dynamic Nonholonomic Wheeled Mobile Robots with Parameter Uncertainties by Hua Chen, Wen Chen, Chaoli Wang, Dongkai Zhang, Binwu Zhang

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Geometry of nondegenerate polynomials: Motivic nearby cycles and Cohomology of contact loci by Lê, Quy Thuong, Nguyen, Tat Thang

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Survey on research progress for compute first networking by Qingmin JIA, Rui DING, Hui LIU, Chen ZHANG, Renchao XIE

“…With the development of 5G and mobile Internet technology, cloud computing, edge computing and intelligent terminal devices have been developed rapidly.Computing resources indicate a trend of ubiquitous deployment.How to use ubiquitous computing resources efficiently and collaboratively has become a hot topic at present in network field.In this context, the concept of compute first networking (CFN) has been proposed and attracted wide attention.Its basic idea is to enhance utilization of computing resources and improve user experience of network services, by converging computing and network deeply as well as coordinating distributed computing resources.Firstly the background and research status of CFN were analyzed, and then basic structure, workflow, and key technologies about CFN were explicated.Finally, future research directions and challenges about CFN were summarized.…”
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Self-Regulated Online Learning of Rural University EFL Students by Heri Mudra

“…In short, self-regulated learning is much influenced by learners’ attitude and competence to integrate technology into online course that is mostly new in the rural context.    …”
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Experimental Study on the Improvement of the Quality of Tooth Root Surface by Vertical Cross Spindle Barreling Finishing by Nie Yong

“…Compared with the cyclotron roller finishing method,the new technology can make the gear live better tooth surface quality.…”
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Heterogeneous Wireless Network Resource Management Algorithm Based on Reinforcement Learning by Chenwei Feng, Jiangnan Yuan

“…In order to make full use of the resources of all kinds of wireless network，the integration of heterogeneous network is necessary.However，when it comes to the heterogeneous network integration，the problems of call request access control and resource management emerge.A reinforcement-learning-based algorithm was presented for heterogeneous wireless network resource management.D2D （device-to-device）communication was introduced into the proposed algorithm and the appropriate network for access could be selected according to different traffic types，terminal mobility，network load status and so on.Meanwhile，to reduce the storage requirement，the neural network technology was used to solve the problem of continuous state space.Simulation results show that the proposed algorithm has an efficient learning ability to achieve autonomous radio resource management，which effectively improves the spectrum utility and reduces the blocking probability.…”
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Corrigendum to “Coagulation and Sedimentation of Concentrated Laterite Suspensions: Comparison of Hydrolyzing Salts in Presence of Grewia spp. Biopolymer” by M. Bernard Kameni Ngounou, Girivyankatesh Hippargi, Ndi K. Sylvere, Kofa G. Patrice, Kayem G. Joseph, Sukdeb Pal

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STUDY ON MICROSTRUCTURE AND PROPERTIES OF STELLITE 6/WC COMPOSITE COATING by ZHANG TianLi, ZHANG DaBing, YANG JianJun, PENG YingBiao

“…In this paper,the Stelllite6 corrosion-resistant coating was prepared on the surface of Q960 steel plate by laser cladding technology. To improve the wear resistance of the coating,the WC powder with mass fractions of 15%,20%,30%,35% and 40% was added to the coating,respectively. …”
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Network Operation,Maintenance and Resource Management in Mega Constellation System by Di ZHOU, Min SHENG, Qi HAO, Jiandong LI, Jianping LIU

“…As the overall scale of the constellation system continues to increase,its service capabilities are gradually expanding from traditional mobile communication services to broadband interconnection services,which puts forward new requirements for the operation,maintenance and resource management in the satellite constellation system.The challenges brought by constellation scale,resource dynamics,and resource failure for the performance management-oriented network operation and maintenance and resource management in mega constellation system (MCS) were fi rst analyzed.The key technologies of network operation,maintenance and resource management for MCS were discussed from the aspects of traff c prediction and resource perception and maintenance and dynamic resource slicing.An intelligent network management and control architecture was proposed to realize lightweight operation and maintenance and resource management for MCS,laying a theoretical foundation for the efficient network operation and maintenance and resource management technology for future space-terrestrial integrated networks.…”
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USE OF OPERATIONAL MECHANISMS OF MNEMONIC ABILITIES BY SUBJECTS WHEN MEMORIZING COMPLEX UNCOMPLICABLE MATERIAL by S. A. Dyupina

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