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Abstract: Since the end of 2019, the novel coronavirus pneumonia has spread widely around the world. China has adopted a precise prevention and control plan, which requires testing a large number of samples in the shortest possible time, especially in special places with limited space such as shelters and mobile testing vehicles. Therefore, it is very important to improve the single nucleic acid detection throughput of the equipment and increase the detection speed. Currently, the world's highest throughput nucleic acid detection instrument is 96-well. How to increase throughput in a machine while reducing scanning time and increasing detection speed is a key core technology. This paper proposes a creative multi-distribution concept using a matrix, which divides the 240-well detection throughput equipment into 5 independent subsystems, which can detect simultaneously or operate independently under special circumstances. The intelligent scheduling algorithm based on the particle swarm algorithm is used to intelligently identify the status of each independent distribution sub-matrix for control, and combined with the nucleic acid rapid detection technology based on fluorescence quantitative PCR, the efficiency of nucleic acid detection is greatly improved. After experiments, the equipment can complete the detection of 240 samples in 50 minutes, which is a great improvement compared with traditional nucleic acid detection equipment.Abstract: Since the end of 2019, the novel coronavirus pneumonia has spread widely around the world. China has adopted a precise prevention and control plan, which requires testing a large number of samples in the shortest possible time, especially in special places with limited space such as shelters and mobile testing vehicles. Therefore, it is very import...Learn More
Abstract: With the rapid development of multimedia services, the issue of image copyright protection has received widespread attention in recent years. Image watermarking is a key technology to solve this problem. This article presents a color image watermarking algorithm based on Logistic chaotic mapping combined with DWT-SVD. The method in this paper consists of two parts: watermark embedding and watermark extraction. Watermark embedding refers to the embedding of a watermark image into the wavelet low-frequency coefficient singular values of the R, G, and B components of the carrier image after logistic encryption and SVD decomposition. Then, the image embedded with the watermark is obtained through SVD recombination and wavelet reconstruction, and three keys are generated during the embedding process. Watermark extraction first performs wavelet decomposition on the image embedded with the watermark, SVD decomposition is performed on the low-frequency coefficients obtained from the decomposition, watermark singular value recombination is performed based on the corresponding two keys, and then the watermark image is obtained through Logistic encryption based on the third key, achieving the purpose of copyright protection. The advantage of this algorithm is that combining DWT with SVD can effectively overcome attacks such as noise, compression, rotation, and scaling. Logistic chaotic scrambling generates new keys, increasing the security of watermarks and making the method proposed in this paper more covert. The simulation results show that the watermark algorithm proposed in this paper has good imperceptibility and concealment, and has good robustness against noise, JEPG compression, rotation, and scaling attacks on image watermarks.Abstract: With the rapid development of multimedia services, the issue of image copyright protection has received widespread attention in recent years. Image watermarking is a key technology to solve this problem. This article presents a color image watermarking algorithm based on Logistic chaotic mapping combined with DWT-SVD. The method in this paper consi...Learn More
Abstract: With the rapid development of the field of intelligent network connected vehicles, the level of automobile informatization has been greatly improved. The scene of information interaction is more and more complex, the type of information is more and more diverse, at the same time, the amount of information is more and more huge. Therefore, automobile enterprises are facing more and more security risks in network security. Under the background of continuous improvement of relevant standards and regulations at home and abroad and gradual deepening of supervision by relevant departments, this paper designs and develops a set of automobile network security management system, based on relevant theoretical knowledge in this field and the practical experience of mainstream automobile enterprises and parts suppliers. The system analyzes and explores the construction of automobile network security management system, and clarifies the necessity of system construction, aiming to provide construction ideas for relevant enterprises in the upstream and downstream of automobile industry chain to build automobile network security management system, so as to systematically resolve network security risks. This system helps automobile enterprises to meet compliance related requirements, while strengthening their own internal control mechanism, ensuring business continuity, and developing high-quality in the fast lane of intelligent networking.Abstract: With the rapid development of the field of intelligent network connected vehicles, the level of automobile informatization has been greatly improved. The scene of information interaction is more and more complex, the type of information is more and more diverse, at the same time, the amount of information is more and more huge. Therefore, automobil...Learn More
Abstract: Conceptualization of Deterministic Networking (DN), has developed as the central paradigm of the contemporary architecture of the network, which proposes precise Quality of Service (QoS) that adheres to the requirements of high precision applications, which include not only telemedicine surgeries and autonomous driving but also industrial automation. In this context, SRv6 Deterministic Networking arises as a transformational technology essentially using Segment Routing over IPv6 (SRv6) in computation of end-to-end paths custom-built for specific service requirements hence ensuring strictest Service Level Agreement (SLA) compliance. This paper proposes a hierarchical-based end-to-end deterministic networking scheme to heterogeneous scenarios using SRv6 technology. Each of the heterogeneous network domains is abstracted as separate objects, through utilization of that novel scheme, and at the same time, makes it associated with a parent controller to carry out intra-domain management. Emerging controllers collect information in details about different topologies and also SLA metrics present inside the network thus helping to make a decision during path computation and allocation of resources. The scheme is then tested for its efficacy on the CENI test network in a laboratory setting. Testing generates strong statistics, which reveal that the performance of the network latency addition is below 100 milliseconds, network reliability is at 99.999%, and the capacity to support a network bandwidth of more than 100 gigabits per second. Specifically, the scheme achieves remarkable performance from the Yangtze River Delta region to the Beijing-Tianjin-Hebei regional network, with latency within 100 milliseconds and jitter under 10 milliseconds, effectively meeting the stringent real-time demands of diverse applications. This paper proposes an alternative to bridge the heterogeneous networks with SRv6 Deterministic Networking that allow provision of source-to-destination and destination-to-source paths in a reliable way so as to strictly guarantee SLAs. The proposed scheme made possible through laboratory testing would not only advance the state-of-the-art in DN but also stands a promising approach to addressing the evolving needs of the modern network infrastructures.Abstract: Conceptualization of Deterministic Networking (DN), has developed as the central paradigm of the contemporary architecture of the network, which proposes precise Quality of Service (QoS) that adheres to the requirements of high precision applications, which include not only telemedicine surgeries and autonomous driving but also industrial automatio...Learn More
