In the last few decades, there has been a significant increase in the number and magnitude of natural and man-made hazards, which imposes a tremendous risk to the built environment. In response to the urgent needs for...
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Automated machine vision pipelines do not need the exact visual content to perform their tasks. Therefore, there is a potential to remove private information from the data without significantly affecting the machine v...
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ISBN:
(纸本)9781665492584
Automated machine vision pipelines do not need the exact visual content to perform their tasks. Therefore, there is a potential to remove private information from the data without significantly affecting the machine vision accuracy. We present a novel method to create a privacy-preserving latent representation of an image that could be used by a downstream machine vision model. This latent representation is constructed using adversarial training to prevent accurate reconstruction of the input while preserving the task accuracy. Specifically, we split a Deep Neural Network (DNN) model and insert an autoencoder whose purpose is to both reduce the dimensionality as well as remove information relevant to input reconstruction while minimizing the impact on task accuracy. Our results show that input reconstruction ability can be reduced by about 0.8 dB at the equivalent task accuracy, with degradation concentrated near the edges, which is important for privacy. At the same time, 30% bit savings are achieved compared to coding the features directly.
Current extrapolations of accelerated test results to life in long term service may be greatly misleading when it comes to lead free solder joints. Notably, realistic service conditions are almost never well approxima...
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ISBN:
(纸本)9781424495320
Current extrapolations of accelerated test results to life in long term service may be greatly misleading when it comes to lead free solder joints. Notably, realistic service conditions are almost never well approximated by cycling with a fixed amplitude. However, recent results have demonstrated the consistent breakdown of common damage accumulation rules. In isothermal cycling tests the remaining life, after a step-down in amplitude, was invariably shorter than predicted by such a rule, while a step-up tended to have the opposite effect. The present work offers a mechanistic explanation for this and a basis for the development of a practical approach to the assessment of life under realistic service conditions. Realistic BGA joints were cycled individually in a micromechanical tester, monitoring the solder stiffness and the inelastic energy deposition. Cycling was seen to first cause rapid hardening, followed by leveling off in a "cyclic saturation" stage and eventually the initiation and growth of a crack until failure. A temporary increase in amplitude during cycling caused a lasting reduction in hardness, and thus enhanced inelastic energy deposition and damage evolution, afterwards as well. This would dominate during repeated increases and decreases, eventually shortening the remaining life dramatically.
To provide evidences for the aseismic evaluation of the soil mountain slopes of the Beijing Olympic Forest Park, the seismic response and failure process of mountain slopes during a strong earthquake were investigated...
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作者：
Sun, JingXian Univ
168 South Taibai Rd Xian 710065 Shaanxi Peoples R China
In the context of the "leisure time", the leisure activities have become an important part of the social and cultural activities of urban residents in China. As an important place for daily leisure activitie...
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ISBN:
(纸本)9781921712661
In the context of the "leisure time", the leisure activities have become an important part of the social and cultural activities of urban residents in China. As an important place for daily leisure activities of urban residents, parks play an irreplaceable role in promoting the quality of life of the citizens and meeting the needs of the citizens. This paper investigates the leisure groups in the main parks of Yanta District in Xi'an by questionnaire survey, and analyses the leisure motivation and leisure activities of urban residents by using Spss and Excel analysis methods. Finally, on the basis of the analysis results of the leisure behavior characteristics of urban residents' parks, the reference information is provided to optimize the leisure function of the park for the residents' leisure needs.
In this work, we propose Dilated Point Convolutions (DPC). In a thorough ablation study, we show that the receptive field size is directly related to the performance of 3D point cloud processing tasks, including seman...
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ISBN:
(纸本)9781728173955
In this work, we propose Dilated Point Convolutions (DPC). In a thorough ablation study, we show that the receptive field size is directly related to the performance of 3D point cloud processing tasks, including semantic segmentation and object classification. Point convolutions are widely used to efficiently process 3D data representations such as point clouds or graphs. However, we observe that the receptive field size of recent point convolutional networks is inherently limited. Our dilated point convolutions alleviate this issue, they significantly increase the receptive field size of point convolutions. Importantly, our dilation mechanism can easily be integrated into most existing point convolutional networks. To evaluate the resulting network architectures, we visualize the receptive field and report competitive scores on popular point cloud benchmarks.
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