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4th International Symposium on Smart and Healthy Cities, ISHC 2022

作者： Cen, danfeng Chen, Zhihui Pan, Hua Wu, dongfang Hou, Jun Jiang, Linhua Academy for Engineering and Technology Fudan University Shanghai China Alljoy Technology Co. Ltd R&d Department Shanghai China Jinhua Institute Zhejiang University Zhejiang China

ISBN: (纸本)9781665491808

deep neural network (dNN) has achieved great success in many fields. However, as training a good model often needs massive high-quality data and computation resources, it is very important to protect the intellectual property (IP) of neural networks. We find that the relevance of preventing the stealing of the learned dNN is the same as verifying the suspicious model. In this research, we proposed a novel method to watermark deep Neural Networks and authorize specified users. Specifically, the input must go through a watermark network with our designed backdoor and key network before it can be put into the target network. Experiment results demonstrated that our method is effective in extracting watermark and preventing infringement without affecting the performance of the target network. Our proposed protection network has achieved excellent results in the ability to identify the triggered set and the non-trigger set, the ability to identify the key, and the quality of the output of watermark. © 2022 IEEE.

关键词： deep neural networks

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MCAMNet: A Novel Encoder-decoder Network with Multi-directional convolution and Attention Mechanism for Crack detection 4

MCAMNet: A Novel Encoder-Decoder Network with Multi-directio...

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4th International Symposium on Smart and Healthy Cities, ISHC 2022

作者： Yang, Ling Chen, Zhihui Pan, Hua Wu, dongfang Hou, Jun Jiang, Linhua Fudan University Academy for Engineering and Technology Shanghai China Alljoy Technology Co. Ltd R&d Department Shanghai China Jinhua Institute Zhejiang University Zhejiang China

ISBN: (纸本)9781665491808

Accurate and timely detection and repair of pavement cracks is the key to road maintenance. Although the crack detection method based on image semantic segmentation have achieved good results till now, there are still some shortcomings, especially detection accuracy needing to be further improved. We propose a new network for crack segmentation based on encoder-decoder structure, called MCAMN et, which uses multi-directional convolution module instead of conventional convolution module for feature extraction, solving the problem of discontinuous and incomplete crack segmentation results. MCAMNet innovatively adds spatial attention block and efficient channel attention block after the encoder to reduce the interference of background and noise, solving the problem that the crack details and the segmentation results of small cracks are not fine. Additionally, we mix three loss functions of different levels by obtaining a mixed loss function to supervise the training process of MCAMNet, solving the problem of rough and fuzzy crack edges in the segmentation results. Experiments on four public datasets of pavement cracks prove that the F -score and mIo U of MCAMNet are better than existing methods. © 2022 IEEE.

关键词： Crack detection

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design and Implementation of 3d Visual System Based on Cloud rendering 6

Design and Implementation of 3D Visual System Based on Cloud...

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6th International conference on Electronic Information technology and computer engineering, EITCE 2022

作者： Zhong, Juanjuan Li, Jiewei Jin, Hengyu R&D Center Insigma Technology Co. Ltd Zhejiang Hangzhou China Engineering Technology Center Hong Kong Zhuhai Macao Bridge Authority Guangdong Zhuhai China

ISBN: (纸本)9781450397148

In order to fix the problem of running large-scale 3d visual system in non-professional graphics workstations of low computing power equipment such as mobile phones, light laptops, tablet computers and integrated display desktops, this paper proposes a solution based on cloud rendering. This paper mainly studies the underlying principle of cloud rendering, the overall structure design, and specific modules such as control center service, process control service and rendering services. Finally, we also studied the implementation of lightweight front-end rendering SdK. © 2022 Association for computing Machinery.

关键词： computing power

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Iron loss calculation model considering stress influence in amorphous alloy core 18

Iron loss calculation model considering stress influence in ...

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18th IEEE conference on Industrial Electronics and Applications, ICIEA 2023

作者： Zhao, Pengfei Qiu, Shuheng Yang, Xinyu Wang, Haifeng Huo, Lishan Zhao, Zhixiao Zhang, Chi University of Science and Technology of China School of Rare Earths Ganzhou China Chinese Academy of Sciences Ningbo Institute of Materials Technology and Engineering Ningbo China Ningbo Zhongke B Plus New Materials Technology Co. Ltd. R&d Department Ningbo China

ISBN: (纸本)9798350312201

The loss of amorphous motors is lower than that of traditional silicon steel motors, which has broad prospects. However, the interference fit stress of the core and casing can degrade the amorphous properties. This situation reduces the calculation accuracy of the traditional iron loss calculation model. In this paper, the coefficient of the iron loss model under stress is corrected, and an iron loss model considering the influence of interference force is proposed. The iron loss-stress mapping model is obtained by designing the experiment of aluminum ring and core shaft hole matching. The model has acceptable accuracy in the stress range from 0 MPa to 31.927 MPa, and the average calculation error is 8.6% by comparing the calculated value of the model with the measured value. © 2023 IEEE.

关键词： Amorphous alloys

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A new method for predicting the density of drilling fluid based on non-parametric regression under HTHP

A new method for predicting the density of drilling fluid ba...

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2024 8th International conference on Electrical, Mechanical and computer engineering (ICEMCE)

作者： Haiqiu Zhou Yuguang Ye Weiheng Cheng Yixin Gu Qijun Guo Tuo Zhou Bahedaer Yue Xiao Fuhua Jiang Shiying Zhou CNPC Engineering Technology R & D Company Limited Beijing China China National Oil and Gas Exploration and Development Co. Ltd. Beijing China

ISBN: (数字)9798331506230

ISBN: (纸本)9798331506247

Temperature and pressure are important factors affecting the density of drilling fluid. As exploration and development gradually progress to deep layers and deep waters, formation temperature and pressure are getting higher and higher. Ignoring the influence of temperature and pressure on the density of drilling fluid will lead to large deviations in drilling hydraulic calculations and increase the probability of accidents such as lost circulation and overflow. In this paper, the density change of a set of field oil-based drilling fluids is measured through laboratory experiments. The temperature range is 20-180°C, and the pressure range is 0.1 MPa-180 MPa. A high-temperature and high-pressure density prediction model for oil-based drilling fluids is established based on the weighted linear regression method. Based on the established model, the high-temperature and high-pressure density of the experimental drilling fluid is predicted. The results show that the prediction error is less than 5%, and the calculation accuracy is high, which can guide on-site operation and construction.

关键词： drilling Temperature measurement Temperature distribution Fluids Accuracy density measurement Oils computational modeling Linear regression Predictive models

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Optimization of Hydrogen Lubricated Herringbone Groove Gas Bearings 9

Optimization of Hydrogen Lubricated Herringbone Groove Gas B...

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9th International conference on Fluid Power and Mechatronics, FPM 2023

作者： Lu, Xv-Jun Tong, Xiao-Meng Cai, Mao-Lin Wu, Wen-Zhi Hu, Yong Automation Science and Electrical Engineering Beihang University Beijing China Information Center Xiamen University of Technology Xianen China R&D Center Shenyang Blower Works Group Corporation Co. Ltd. Shenyang China

ISBN: (数字)9798350304947

ISBN: (纸本)9798350304947

Gas bearings are widely used in large high-speed rotating machineries due to their advantages of low power consumption, independence of sophisticated lubrication systems and high operational accuracy. This study focuses on the modeling of the hydrogen (H2) lubricated herringbone groove bearings, which are designed to support the future high-speed H2 centrifugal compressor for the H2 pipeline transportation, and therefore directly use H2 for lubrication to guarantee the tightness, purity and safety of the H2 transport system. Important bearing parameters including the groove number, depth and other geometric parameters are optimized to improve the bearing load-carrying capacity. The cross-shaped groove demonstrates superior performance compared with the traditional sliding gas bearings under ultra-high speed and low gas supply pressure. CFd simulations in this study show that the herringbone groove bearing based on H2 lubrication can achieve a satisfactory load-carrying capacity with optimized geometries. The current research is an important step towards designing a high-speed H2 centrifugal compressor prototype. © 2023 IEEE.

关键词： Hydrogen

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The appearance of cytoplasmic cytochrome C precedes apoptosis during drosophila salivary gland degradation

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Insect Science 2024年第1期31卷 157-172页

作者： Shihui Long Wenxin Cao Yongyu Qiu ruohan deng Jiali Liu Lidan Zhang renke dong Fengxin Liu Sheng Li Haigang Zhao Na Li Kang Li Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhouChina Guangmeiyuan R&D Center Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied TechnologySouth China Normal UniversityMeizhouGuangdong ProvinceChina School of Food Science and Engineering South China University of TechnologyGuangzhouChina ChemPartner PharmaTech Co. LtdJiangmenGuangdong ProvinceChina

Apoptosis is an important process for organism development that functions to eliminate cell damage,maintain homeostasis,and remove obsolete tissues during *** mammals,apoptosis is accompanied by the release of cytochrome C(Cyt-c)from mitochondria to the ***,whether this process is conserved in the fruit fly,drosophila melanogaster,remains *** this study,we discovered that during the degradation of drosophila salivary gland,the transcription of mitochondria apoptosis factors(MAPFs),Cyt-c,and death-associated APAF1-related killer(dark)encoding genes are all upregulated antecedent to initiator and effector caspases encoding *** proteins Cyt-c and the active caspase 3 appear gradually in the cytoplasm during salivary gland ***,the Cyt-c protein colocates with mito-GFP,the marker indicating cytoplasmic mitochondria,and the change in mitochondrial membrane potential coincides with the appearance of Cyt-c in the ***,impeding or promoting 20E-induced transcription factor E93 suppresses or enhances the staining of Cyt-c and the active caspase 3 in the cytoplasm of salivary gland,and accordingly decreases or increases the mitochondrial membrane potential,*** research provides evidence that cytoplasmic Cyt-c appears before apoptosis during drosophila salivary gland degradation,shedding light on partial conserved mechanism in apoptosis between insects and mammals.

关键词： active caspase 3 apoptosis Cyt-c drosophila salivary gland

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Preparation and Performance research of Baking-Carbonized Functional Flavors/Konjac Glucomannan Porous composite Membrane

Preparation and Performance Research of Baking-Carbonized Fu...

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2022 International conference on Smart Manufacturing and Material Processing, SMMP 2022

作者： Zhang, Ling Liu, Jinkun duan, Yanqing Zhe, Wei Zhao, Yingliang Miyazaki, Toshiki Li, Chao R&d Department Ii R&d Center of China Tobacco Yunnan Industrial Co. Ltd. Kunming650231 China Faculty of Materials Science and Technology Kunming University of Science and Technology Kunming650093 China Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology Japan

ISBN: (纸本)9781643683508

To develop one porous additive material that can be assembled on cigarette filter, and achieve both functions of reducing hazard substances like tar and providing special aroma and moisture, this study innovatively selects the raw materials like baking-carbonized functional flavors with special aroma and konjac glucomannan (KGM) with properties of water absorption, gelling and film-forming, following the steps of casting into membrane shape, thermostatic crosslinking for strength enhancement and freeze-drying for pore creating to prepare 5 porous composite membranes based on baked-carbonized functional flavors and konjac glucomannan (KGM) were prepared. The composite structure, morphologies on the surface and the cross section, porosity structures including mesoporous and macropore of the porous composite membranes were characterized, the tensile performance and aroma constituents through solid phase microextraction and hazardous substances adsorption as packed into the commercial cigarette were also studied. results showed that all baked-carbonized functional flavors were carbonized into amorphous, and contained the groups of aromatic components like C-H, C=O, C-O-C (aldehydes, esters), cross-linking achieved the entanglement of KGM segments by deacetylation. When compounded, KGM acted as the framework to build the 3d porous network structure, and the functional flavor powders were wrapped into the KGM layer. All porous composite membranes owned some mechanical strength and the internal porosity over 90%, the mesopores and the macropores were ranged with 5-50 nm and 20-255 μm, respectively, which was satisfied for gas flowing and harmful substances adsorption. Aroma and resulting abundance of extracted constituents changed with timing, which equipped the membranes with a comprehensive aroma feeling. Among them, the membrane prepared with the raw material of dark plum showed a better comprehensive performance, especially it could significantly reduce the contents of

关键词： Water absorption

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Low False-Alarm Active Sonar detection under Strong reverberation

Low False-Alarm Active Sonar Detection under Strong Reverber...

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IEEE/OES China Ocean Acoustics (coA)

作者： Li Sibo Guo rui Zhang dianlun Li Yujuan Hou Xiaoqian Wang Shengfeng Science and Technology on Underwater Acoustic Laboratory/ Technology R&D Center Harbin Engineering University / Haiying Enterprise Group Co. Ltd Harbin/Wuxi China Technology R&D Center Haiying Enterprise Group Co. Ltd Wuxi China Science and Technology on Underwater Acoustic Laboratory Harbin Engineering University Harbin China

ISBN: (数字)9798350340297

ISBN: (纸本)9798350340303

In active low-frequency and high-power sonar systems, target detection must overcome strong reverberation. Active sonar reverberation interference strongly fluctuates with distance and exhibits significant temporal and spatial variations. Active sonar reverberation is a typical nonstationary background. complex changes in reverberation directly affect the target detection performance of active sonar systems. The major difficulty associated with current detection algorithms lies in autonomous detection, particularly in terms of the adaptability of detection algorithms to complex background interference. Accurately performing dynamic background estimation, suppressing interference, controlling false alarms, and highlighting weak targets are the focus of object detection. This paper proposes an active sonar target detection method driven by a combination of data and models. The proposed method can achieve target detection under strong reverberation interference with low sidelobe false alarms and high robustness.

关键词： Target tracking Target recognition Sonar Object detection Interference robustness data models reverberation detection algorithms Sonar detection

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dendrobium officinale polysaccharide attenuates type 2 diabetes in mice model by modulating gut microbiota and alleviating intestinal mucosal barrier damage

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Food Science and Human Wellness 2025年第1期14卷 112-123页

作者： Xiaoxia Chen Chun Chen Changyang Ma Wenyi Kang Junlin Wu Xiong Fu Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety Guangzhou 510640China SCUT-Zhuhai Institute of Modern Industrial Innovation School of Food Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Guangzhou Institute of Modern Industrial Technology Guangzhou 511458China Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health(111 Center) Guangzhou 510640China National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Guangzhou Wondfo Health Science and Technology Co. Ltd.Guangzhou 510640China

The purpose of this study was to investigate the hypoglycemic effect and mechanism of d endrobium officinale polysaccharide(dOP)on type 2 diabetes mellitus(T2dM)mice established by high-fat diet and *** results showed that dOP improved glycolipid metabolism and serum inflammation levels,and inhibited intestinal-derived lipopolysaccharide(LPS)translocation,suggesting that inhibiting LPS-mediated intestinal barrier damage may be a key target for dOP to alleviate ***,the study found that dOP reduced intestinal inflammation and oxidative stress levels,significantly up-regulated the mrNA expression of tight junction proteins Claudin-1,Occludin and zonula occluden-1(ZO-1),and ameliorated intestinal epithelial *** addition,dOP strongly inhibited the intestinal pathogenic bacteria and LPS-producing bacteria Helicobacter,Enterococcus and desulfovibrio with a reduction rate of 95%,73% and 9%,respectively,and promoted the proliferation of anti-inflammatory bacteria Bifidobacterium and Lactobacillus by 139% and 8%,*** together,the hypoglycemic effect of dOP was related to the protection of intestinal mucosal barrier,and its underlying mechanism lied in its excellent anti-inflammatory and gut microbiotamodulatory effects,providing a theoretical basis for developing dOP as a novel prebiotic in functional food for diabetes.

关键词： dendrobium officinale polysaccharide Hypoglycemic Mechanism Lipopolysaccharide Gut microbiota

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