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基于同态加密的跨链资产转移隐私保护技术研究

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通信技术 2024年第6期57卷 609-616页

作者：肖银廖思捷衡辉武涂勋黄娟唐飞中国电子科技网络信息安全有限公司四川成都610041 重庆邮电大学重庆400065

随着区块链的快速发展与广泛应用,如何打通各区块链系统,实现数据资产价值互通,是近年来的研究热点。资产转移是跨链领域中的重要应用之一,因此针对跨链资产转移的身份与资产数据隐私保护需要,构建了一个基于同态加密的跨链资产转移隐... 详细信息

随着区块链的快速发展与广泛应用,如何打通各区块链系统,实现数据资产价值互通,是近年来的研究热点。资产转移是跨链领域中的重要应用之一,因此针对跨链资产转移的身份与资产数据隐私保护需要,构建了一个基于同态加密的跨链资产转移隐私保护技术架构。综合运用同态加密、数字签名、零知识证明等相关技术,保障跨链资产的安全转移,为用户提供更为隐私安全的数字资产交易环境。此外,通过跨链网关与区块链的可溯源性,确保交易的可审计性,为整个系统增添了额外的安全层级,保障用户跨链资产转移的安全性与隐私性。

关键词：跨链资产转移同态加密隐私保护

基于窗函数补零拟合的插值补零FFT谐波分析算法

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电气应用 2024年第8期43卷 106-112页

作者：胡松吴海周成朱亚军夏磊徐志华唐飞南瑞集团有限公司(国网电力科学研究院有限公司) 江苏南京211106 国电南瑞科技股份有限公司江苏南京211106 国电南京自动化股份有限公司江苏南京211100

工程上谐波分析通常采用计算量相对较小的快速傅里叶变换(FFT),同时为减少栅栏效应和频谱泄露通常采用插值算法。FFT对数据窗长度有特定要求,例如2/3/4等整数次幂。针对数据窗长度为非整数次幂情况,提出一种改进插值补零FFT谐波测量算法... 详细信息

工程上谐波分析通常采用计算量相对较小的快速傅里叶变换(FFT),同时为减少栅栏效应和频谱泄露通常采用插值算法。FFT对数据窗长度有特定要求,例如2/3/4等整数次幂。针对数据窗长度为非整数次幂情况,提出一种改进插值补零FFT谐波测量算法,算法核心在于将补零FFT插值校正转变为基于补零窗函数的频谱响应的拟合校正。以基2为例,对非2整数次幂数据窗加5项最快旁瓣衰减速率窗修正,再补零使得数据窗长度满足2的整数次幂,最后进行改进插值FFT计算。所提算法适用于任意窗函数补零且无须推导修正公式。仿真与实验结果验证该算法在谐波分析方面的有效性。

关键词：快速傅里叶变换补零 5项最快旁瓣衰减速率窗改进插值拟合谐波分析

Liquid Water Path Retrieval Using the Lowest Frequency Channels of Fengyun-3C Microwave Radiation Imager(MWRI)

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Journal of Meteorological Research 2017年第6期31卷 1109-1122页

作者： fei tang Xiaolei ZOU Joint Center of Data Assimilation for Research and Application College of Atmospheric ScienceNanjing University of Information Science &Technology State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological Administration Earth System Science Interdisciplinary Center University of Maryland College Park

The Microwave Radiation Imager （MWRI） on board Chinese Fengyun-3 （FY-3） satellites provides measurements at 10.65, 18.7, 23.8, 36.5, and 89.0 GHz with both horizontal and vertical polarization channels. Brightness temperature measurements of those channels with their central frequencies higher than 19 GHz from satellite-based microwave imager radiometers had traditionally been used to retrieve cloud liquid water path （LWP） over ocean. The results show that the lowest frequency channels are the most appropriate for retrieving LWP when its values are large. Therefore, a modified LWP retrieval algorithm is developed for retrieving LWP of different magnitudes involving not only the high frequency channels but also the lowest frequency channels of FY-3 MWRI. The theoretical estimates of the LWP retrieval errors are between 0.11 and 0.06 mm for 10.65- and 18.7-GHz channels and between 0.02 and 0.04 mm for 36.5- and 89.0-GHz channels. It is also shown that the brightness temperature observations at 10.65 GHz can be utilized to better retrieve the LWP greater than 3 mm in the eyewall region of Super Typhoon Neoguri （2014）. The spiral structure of clouds within and around Typhoon Neoguri can be well captured by combining the LWP retrievals from different frequency channels.

关键词： microwave remote sensing Fengyun-3C Microwave Radiation Imager (MWRI) liquid water path (LWP) retrieval

Mathematical model and numerical investigation of the influence of spray drying parameters on granule sizes of mold powder

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Particuology 2024年第2期85卷 280-295页

作者： fei Zhang Youyu Lu Shaoyan Zhu Funian Han Guanghua Wen Ping tang Zibing Hou College of Materials Science and Engineering Chongqing UniversityChongqing400044China Guizhou Academy of Testing and Analysis Guizhou Academy of SciencesGuiyang550014China

In this work,the formation mechanism of the droplet-to-granule was investigated in detail based on mold powder manufacturing.A specific mathematical model of two-stage spray drying was established to describe droplet and granule motion,heat and mass transfer,and granule morphology during spray ***,the relationships between spray drying parameters(inlet temperature,atomization pres-sure,slurry mass flow rate)and the properties of the drying tower(temperature and velocity fields)and mold powder granules(temperature,evaporation rates,moisture content,and diameter)were simulated and calculated using ANSYS/Fluent *** ensure that the granule size of mold powder was controlled within the ideal range(0.2-0.6 mm)for producing granules with appropriate mechanical and metallurgical properties,the following optimum spray drying parameters were chosen based on the results of the numerical simulation:inlet temperatures,873 K;slurry atomization pressure,1.8 MPa;slurry mass flow rate,0.05 kg *** these parameters,the slurry mass flow rate has the most significant effect on granule size.

关键词： Mold powder slurry Spray drying parameters Mathematical model Numerical simulation Granule sizes

New perspectives on the therapeutic potential of quercetin in non-communicable diseases: Targeting Nrf2 to counteract oxidative stress and inflammation

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Journal of Pharmaceutical Analysis 2024年第6期14卷 100930页

作者： Zhang L. Xu L.-Y. tang F. Liu D. Zhao X.-L. Zhang J.-N. Xia J. Wu J.-J. Yang Y. Peng C. Ao H. State Key Laboratory of Southwestern Chinese Medicine Resources School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 China Innovative Institute of Chinese Medicine and Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 China

Non-communicable diseases (NCDs), including cardiovascular diseases, cancer, metabolic diseases, and skeletal diseases, pose significant challenges to public health worldwide. The complex pathogenesis of these diseases is closely linked to oxidative stress and inflammatory damage. Nuclear factor erythroid 2-related factor 2 (Nrf2), a critical transcription factor, plays an important role in regulating antioxidant and anti-inflammatory responses to protect the cells from oxidative damage and inflammation-mediated injury. Therefore, Nrf2-targeting therapies hold promise for preventing and treating NCDs. Quercetin (Que) is a widely available flavonoid that has significant antioxidant and anti-inflammatory properties. It modulates the Nrf2 signaling pathway to ameliorate oxidative stress and inflammation. Que modulates mitochondrial function, apoptosis, autophagy, and cell damage biomarkers to regulate oxidative stress and inflammation, highlighting its efficacy as a therapeutic agent against NCDs. Here, we discussed, for the first time, the close association between NCD pathogenesis and the Nrf2 signaling pathway, involved in neurodegenerative diseases (NDDs), cardiovascular disease, cancers, organ damage, and bone damage. Furthermore, we reviewed the availability, pharmacokinetics, pharmaceutics, and therapeutic applications of Que in treating NCDs. In addition, we focused on the challenges and prospects for its clinical use. Que represents a promising candidate for the treatment of NCDs due to its Nrf2-targeting properties. © 2024 The Authors

关键词： Anti-inflammatory Antioxidant Availability Non-communicable diseases Nrf2 Quercetin

An efficient light-to-heat conversion coupling photothermal effect and exothermic chemical reaction in Au NRs/V_(2)C MXene membranes for high-performance laser ignition

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Defence Technology（防务技术） 2022年第5期18卷 834-842页

作者： Bo Yang Peng-fei tang Chun-jiao Liu Rui Li Xiao-dong Li Jin Chen Zhi-qiang Qiao Hong-ping Zhang Guang-cheng Yang School of Materials Science and Engineering Southwest University of Science and TechnologyMianyangSichuan621010China Institute of Chemical Materials China Academy of Engineering PhysicsMianyangSichuan621900China School of Chemical Engineering Nanjing University of Science and TechnologyNanjing210094PR China

MXene,a new type of two-dimensional materials,have been demonstrated as one of the best photothermal materials owing to their strong light-matter interaction and high photothermal conversion efficiency in recent ***,we report the intriguing light-to-heat conversion property of vanadium carbide(V_(2)C)MXene under irradiation of millisecond laser *** the typical photothermal materials,the V_(2)C MXene not only converts the incident laser energy to heat by the physical photothermal effect,but also triggers the exothermic oxidation of the V_(2)C *** oxidation could be greatly promoted with addition of plasmonic Au nanorods(Au NRs)for light absorption *** to the unique light-to-heat conversion property,the Au NRs/V_(2)C MXene membrane could serve as high temperature pulse(HTP)generators that is proposed for numerous applications with high demand for *** a proof-of concept application,Au NRs/V_(2)C MXene membrane was applied for laser ignition of the high energy density materials,such as 2,4,6,8,10,12-(hexanitrohexaaza)cyclododecane(HNIW or CL-20).An improved ignition performance,in terms of lowered laser threshold,is achieved as compared to the state-of-the-art light-to-heat conversion materials.

关键词： V_(2)C MXene Light-to-heat conversion Exothermic chemical reaction Plasmonic Au nanorods High temperature pulse Laser ignition

Distributed Secondary Control Based on Dynamic Diffusion Algorithm for Current Sharing and Average Voltage Regulation in DC Microgrids

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 597-607页

作者： Dawei Liao fei Gao Daniel J.Rogers Wentao Huang Dong Liu Houjun tang Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghaiChina Department of Engineering Science University of OxfordOxford OX12JDU.K. IEEE

This paper introduces a distributed secondary control scheme for achieving current sharing and average voltage regulation objectives in a DC *** proposed scheme employs a dynamic diffusion algorithm(DDA)instead of the consensus algorithm to enable distributed communication among *** help understand DDA,the relation of DDA and other diffusion algorithms is discussed in detail and its superiority is shown by comparison with diffusion and consensus ***,considering the discrete nature and different sampling time of the digital controller and communication network,a z-domain model of the entire DC microgrid is *** influence of communication and secondary control parameters on the system stability is *** on the established model,the tolerable communication rates are ***-time simulations conducted on the OPAL-RT platform validate the effectiveness of the proposed scheme,showcasing its advantages in terms of convergence speed and stability.

关键词： Cooperative control DC microgrid diffusion algorithm discrete-time modeling distributed secondary control

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基于物联网的分布式水质在线监控系统设计

传感技术学报 2022年第4期35卷 565-572页

作者：唐菲扬州工业职业技术学院江苏扬州225127

针对现有水质监控系统成本高、功耗大、传输距离短等不足,设计了一种分布式水质在线监控系统。该系统基于LoRa技术和NB-IoT技术搭建了一种具有三层网络拓扑的系统架构,并建立通信链路传输模型与节点功耗评估模型;以此为基础采用全新一代... 详细信息

针对现有水质监控系统成本高、功耗大、传输距离短等不足,设计了一种分布式水质在线监控系统。该系统基于LoRa技术和NB-IoT技术搭建了一种具有三层网络拓扑的系统架构,并建立通信链路传输模型与节点功耗评估模型;以此为基础采用全新一代LoRa调制解调器和具备业界更低静态电流的电源管理芯片构建硬件平台,同时设计了一种包含定时唤醒和空中唤醒的双唤醒软件机制,解决了传统水质监控系统无法同时兼顾远距离传输和低功耗运行的两难问题。通过设计合理的容错机制,消除了无线通信固有的通信误码问题对系统的影响。实地组网试验表明,终端节点电池消耗量仅为15.95 mAH/天,网关节点与终端节点最远传输距离达到10 km,通信误码率小于3%,且通过超时重发机制实现所有数据的成功传输,具有较强的网络鲁棒性。

关键词：无线传感器网络水质监控分布式 NB-IoT LoRa 超低功耗

基于DoDAF的铁路营业线施工安全防护体系

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中国铁路 2024年第1期 175-183页

作者：汤飞宁雪张鹏杨磊李金波中国铁道科学研究院集团有限公司铁道科学技术研究发展中心北京100081 北京中铁科轨道交通安全技术有限公司北京100081

铁路营业线施工具有参与专业多、组织规模大、作业交互环境复杂等特点,对施工安全防护提出了很高要求,需以体系化视角对营业线施工安全防护开展系统研究。从铁路营业线施工作业实际出发,基于国防部体系结构框架(DoDAF),以实现铁路营业... 详细信息

铁路营业线施工具有参与专业多、组织规模大、作业交互环境复杂等特点,对施工安全防护提出了很高要求,需以体系化视角对营业线施工安全防护开展系统研究。从铁路营业线施工作业实际出发,基于国防部体系结构框架(DoDAF),以实现铁路营业线施工安全防护为目标,构建铁路营业线施工DoDAF模型,涵盖全景视图、能力视图、作战视图及系统视图下多个模型,明确施工防护目标、能力、任务、功能等核心要素,形成完整的施工安全防护体系,为铁路营业线施工安全防护顶层设计提供新的借鉴思路。

关键词：铁路营业线施工施工安全防护防护体系国防部体系结构框架 DoDAF

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