Wyniki wyszukiwania - Biblioteka Nauki

1

Analysis of patent innovation evolution and layout characteristics of global new textile materials technologies

100%

Wang P. , Cheng H. , Elvis N. T.

Fibres & Textiles in Eastern Europe

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2024

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tom Vol. 32, no. 5

27--38

EN

Vigorously developing new textile material technology is critical to improving the textile industry’s high-tech level , upgrading its transformation , promoting high-quality development of the real economy, and enhancing the country’s overall power. This paper analyzes patent technology to explore new textile material technology layout characteristics and evolution trends for the strategic basis of industrial transformation and development on a global scale. The research took new textile material technology patents as the research object, constructed 76,373 invention application patent data pools in China, Europe, Japan, South Korea, and the United States, and analysed new textile material technology structural characteristics and their evolution trend from three aspects of patent structure, layout characteristics and evolutions. As a result, it was found that the development plans and target focuses of textile new material technology vary from country to country. Global enterprises in garments, advanced material production, and chemical materials, represented by DuPont, 3M, and Dow Global Technologies, provide an important guarantee for the United States in maintaining its global leadership position in the development of the new textile material industry. Japan pays more attention to the practicality of new materials and considers the coordinated development of the environment and resources. Europe and South Korea focus on the construction of industrial clusters with their own characteristics, establish and improve the industrial standardization system based on core technology and core manufacturing, and maintain global competitiveness in textile new material technology. After 2009, the number of patent applications for new textile material technology in China exceeded that of Europe, the United States, Japan, and South Korea, becoming a global patent power. However, there is still a huge gap between the quality of patents and the layout of new cutting-edge materials in China and those in developed countries such as the United States and Japan, which is the main problem that needs to be solved urgently in the future innovation and development of China’s textile industry, technology planning and layout.

2

Investigation of process stability and weld quality of underwater wet flux-cored arc welding of low-alloy high-strength steel with oxy-rutile wire

75%

Li H. , Liu S. , Ma Q. , Wang P. , Liu D. , Zhu Q.

Polish Maritime Research

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2021

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tom nr 3

100--109

EN

The paper described the experimental findings of underwater wet welding of E40 steel using self-shielded flux-cored wire with a TiO2 -FeO-MnO slag system. The arc stability, weld quality and corrosion resistance with different heat inputs were studied. The results showed that the wet welding process of the designed wire displayed good operability in the range of investigated parameters. The microstructure and mechanical properties of the weld metal depended on the heat input. Due to the high fraction of acicular ferrite in the weld metal, the mechanical properties of the weld metal under low heat input had better tensile strength and impact toughness. Fracture morphologies at low heat input had uniform and small dimples, which exhibited a ductile characteristic. The diffusible hydrogen content in the deposited metal obtained at a heat input of 26 kJ/cm significantly reduced to 14.6 ml/100g due to the combined effects of Fe2 O3 addition and the slow solidification rate of molten metal. The microstructure also had a significant effect on the corrosion resistance of the weld metal. The weld metal with high proportions of acicular ferrite at low heat input exhibited the lowest corrosion rate, while the base metal possessed a reduced corrosion resistance. These results were helpful to promote the application of low alloy high strength steel in the marine fields.

3

Design of a photonic unitary neural network based on MZI arrays

63%

Zhang Y. , Wang R. , Zhang Y. , Su Y. , Wang P. , Luo G. , Zhou X. , Pan J.

Optica Applicata

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2024

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tom Vol. 54, nr 1

5--13

EN

In recent years, optical neural networks have attracted widespread attention, due to their advantages of high speed, high parallelism, high bandwidth, and low power consumption. Photonic unitary neural network is a kind of neural networks that utilize the principles of unitary matrices and photonics to perform computations. In this paper, we design a photonic unitary neural network based on Mach–Zehnder interferometer arrays. The results show that the network has a good performance on both triangular and circular binary classification datasets, where most of the data points are correctly classified. The accuracies achieve 97% and 95% for triangular and circular datasets, with the loss function values of 0.023 and 0.046, respectively.

4

Noise quantization simulation analysis of optical convolutional networks

63%

Zhang Y. , Zhang S. , Zhang D. , Su Y. , Yi J. , Wang P. , Wang R. , Luo G. , Zhou X. , Pan J.

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tom Vol. 53, nr 3

483--493

EN

Optical neural network (ONN) has been regarded as one of the most prospective techniques in the future, due to its high-speed and low power cost. However, the realization of optical convolutional neural network (CNN) in non-ideal cases still remains a big challenge. In this paper, we propose an optical convolutional networks system for classification problems by applying general matrix multiply (GEMM) technology. The results show that under the influence of noise, this system still has good performance with low TOP-1 and TOP-5 error rates of 44.26% and 14.51% for ImageNet. We also propose a quantization model of CNN. The noise quantization model reaches a sufficient prediction accuracy of about 96% for MNIST handwritten dataset.

5

A MZI-based optical neural network for image classification

63%

Zhang Y. , Zhang S. , Zhang D. , Wang R. , Su Y. , Yi J. , Wang P. , Luo G. , Zhou X. , Pan J.

Optica Applicata

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2024

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tom Vol. 54, nr 1

97--104

EN

In recent years, with the expansion of information, artificial intelligence technology has been developed and used in various fields. Among them, optical neural network provides a new type of special neural network accelerator chip solution, which has the advantages of high speed, high bandwidth, and low power consumption. In this paper, we construct an optical neural network based on Mach–Zehnder interferometer. The experimental results on the image classification of MNIST handwritten digitals show that the optical neural network has high accuracy, fast convergence and good scalability.