The transparency and reliability, tamper resistance, traceability, etc. of blockchain technology enable it to protect privacy and share information. The purpose of this paper is to study the secure sharing method of b...
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The transparency and reliability, tamper resistance, traceability, etc. of blockchain technology enable it to protect privacy and share information. The purpose of this paper is to study the secure sharing method of big data among multiple institutions based on the DAG blockchain. This paper analyzes the development of big data and the importance of big data security sharing, as well as the shortcomings of existing security sharing schemes, introduces some theoretical basic knowledge used in the design of this paper, and introduces the big data security sharing scheme based on DAG blockchain. It includes three parts: the scheme architecture of GCP-ABE, the design of DAG block structure and the design of attribute encryption algorithm. The processing steps of encrypted files are described, and the computational cost of the GCP-ABE scheme is compared with the existing big data security sharing schemes through simulation experiments to prove that the scheme in this paper has good performance and functional advantages.
Marine diesel engine is developing towards the direction of precision, automation and systematization, and it has the characteristics of complex structure and many parts. If it breaks down, it will affect the operatio...
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In this paper, we present an Interactive multiple mode-Unscented Kalman filter (IMMUKF) algorithm to achieve mobile node location under wireless sensor networks environments. In the IMM structure, UKF and Variational ...
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Biogas technologies as an alternative energy source are widespread in the EU countries. But on the territory of the Russian Federation, this process is poorly understood. Since the potential from the use of biogas tec...
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Application of virtual simulation technology to manufacturing industry today can shorten the development cycle, reduce costs and improve the design accuracy. This paper takes the spot welding workstation of auto body ...
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In order to realize the visualization simulation of bullet trajectory of submunition, this paper applies the MonteCarlo method to establish the bullet trajectory model, and uses the Visual c# development environment a...
In order to realize the visualization simulation of bullet trajectory of submunition, this paper applies the MonteCarlo method to establish the bullet trajectory model, and uses the Visual c# development environment and Unity3D engine to design the bullet trajectory visualization simulation software. The results show that the bullet external ballistic visualization simulation software can calculate the bullet drop dispersion and visualize the dynamic process of bullet external ballistic, which can provide reference for the design of submunitions and the evaluation of target damage.
In this paper, time series of numerical correlations and morphological similarities are analyzed. It is proposed to combine the correlation coefficient with a time-weighted dynamic time warping (DTW) distance to empha...
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In view of the current characteristics of large size, many parts and complex structure of military products, enterprises urgently need to develop visual assembly process design, 3DAST was used as a platform to study t...
In view of the current characteristics of large size, many parts and complex structure of military products, enterprises urgently need to develop visual assembly process design, 3DAST was used as a platform to study the 3D visual assembly process design of an artillery ammunition transmission mechanism. The 3DAST software was used to manage the assembly structure tree, plan the assembly process and output the assembly simulation to complete the 3D visualization assembly process design and verification of the assembly simulation. The above research method was applied to the assembly process design of a large-caliber artillery gun, which can effectively guide the production, shorten the product manufacturing cycle, reduce the assembly cost and meet the enterprise requirements.
In large-scale Wireless Sensor Networks (WSNs), the use of clustering methods can respond quickly to queries, but the energy consumption of nodes in the network is unbalanced, and collisions may occur during the aggre...
ISBN:
(纸本)9798400716430
In large-scale Wireless Sensor Networks (WSNs), the use of clustering methods can respond quickly to queries, but the energy consumption of nodes in the network is unbalanced, and collisions may occur during the aggregation process, resulting in data loss. Although the use of serial aggregation methods can effectively avoid collisions, they cannot respond quickly to queries. We propose a new energy-saving Sector clustering data aggregation method called Fan Aggregation (FA). FA is a distributed adaptive method that combines the ideas of serial aggregation and clustering. FA extends the network lifespan and reduces query response time through the optimization of clustering and routing stages. In FA, the circular network is divided into two layers. In the first layer, the network is divided into multiple sectors. Each sector's nodes elect a CH (cluster head) through a CH election algorithm and form a chain with other nodes in the sector. In the second layer, the data inside the CH node of each sector is aggregated in series. This method of serial aggregation between nodes within a cluster, serial aggregation between CH nodes, and parallel aggregation between clusters, effectively reduces the network's query response time and network collisions while ensuring network scalability. This, in turn, extends the network's lifespan. And through OMNeT++ simulation, analysis and experimental results show that for large-scale wireless sensor networks, FA is superior to existing algorithms in terms of network life and FDN (First Death Node) indicators.
The effect of gate length 8 nm with underlap of double-gate MOSFET has been designed for VLSI Technology. The evaluation process was followed by NEGF (non-equilibrium Green's function) formalism using SILVACO ATLA...
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