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Fixed-time stabilization of discontinuous spatiotemporal neural networks with time-varying coefficients via aperiodically switching control

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Science China(Information Sciences) 2023年第5期66卷 182-195页

作者： Xiaofang HU Leimin WANG Chuan-Ke ZHANG Xiongbo WAN Yong HE School of Automation China University of Geosciences hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education

This paper focuses on the challenge of fixed-time control for spatiotemporal neural networks(SNNs) with discontinuous activations and time-varying coefficients. A novel fixed-time convergence lemma is proposed, which facilitates the handling of time-varying coefficients of SNNs and relaxes the restriction on the non-positive definiteness of the derivative of the Lyapunov function. Besides, a more flexible and economical aperiodically switching control technique is presented to stabilize SNNs within a fixed time,efectively reducing the amount of information transmission and control costs. Under the newly established fixed-time convergence lemma and aperiodically switching controller, many more general algebraic conditions are deduced to ensure the fixed-time stabilization of SNNs. Numerical examples are provided to manifest the validity of the results.

关键词： spatiotemporal neural networks discontinuous activations time-varying coefficients fixed-time stabilization aperiodically switching control

Quantized and adaptive memristor based CNN(QA-mCNN) for image processing

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Science China(Information Sciences) 2022年第1期65卷 273-275页

作者： Xiaofang HU Wenqiang SHI Yue ZHOU Hongan TANG Shukai DUAN College of Artiflcial Intelligence Southwest University School of Mathematics and Statistics Southwest University College of Computer and Information Science Southwest University College of Electronics and Information Engineering Southwest University School of Artiflcial Intelligence Chongqing University of Technology

Dear editor,The cellular neural network(CNN) is one of the most hardware-implementable neural networks with promising prospects on large-scale and real-time problem solving [1].However, the lack of adaptive templates and advanced implementation technology has hindered its developments and practical applications. In order to solve the problem that traditional templates of CNN are not adaptive,

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胡小芳教授治疗产后汗出经验

中国中医药现代远程教育 2023年第1期21卷 62-63,136页

作者：潘婉晴胡小芳河南中医药大学第一临床医学院河南郑州450000 河南中医药大学第一附属医院普罗旺世医养结合健康管理中心门诊部河南郑州450000

随着生育政策的积极推行,越来越多的家庭选择生育二胎或三胎,除了妊娠期需对身体调护,产后病更是不容忽视。产后正值体虚、免疫力低下时,如果产后汗出过多,又护理不当,就易感外邪,变生他证,影响产妇的健康和生活质量。胡小芳教授从事中... 详细信息

随着生育政策的积极推行,越来越多的家庭选择生育二胎或三胎,除了妊娠期需对身体调护,产后病更是不容忽视。产后正值体虚、免疫力低下时,如果产后汗出过多,又护理不当,就易感外邪,变生他证,影响产妇的健康和生活质量。胡小芳教授从事中医妇科临床与教学30余年,注重审因论治,以益气养血、调和营卫为要治疗产后汗出,临床效果颇佳。文章通过从产后汗出的病因病机、审因论治、临床应用等方面论述胡小芳教授治疗产后汗出的经验,并附2则临床验案。

关键词：产后汗出产后病名医经验胡小芳

胡小芳教授穴位贴敷联合补肾清肝止吐方治疗肝热型妊娠恶阻经验

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中国中医药现代远程教育 2023年第6期21卷 161-163页

作者：何银盼胡小芳河南中医药大学第一临床医学院河南郑州450000 河南中医药大学第一附属医院普罗旺世门诊部河南郑州450000

妊娠恶阻是妊娠早期常见病证之一,治疗方式多种。西医治疗常以静脉补液为主,用维生素B6联合多西拉敏、甲氧氯普胺等药物镇吐治疗,但其症状改善效果不甚理想且病情易反复。中医治疗多以调中降气为法,辅以针灸、穴位贴敷等中医特色疗法。... 详细信息

妊娠恶阻是妊娠早期常见病证之一,治疗方式多种。西医治疗常以静脉补液为主,用维生素B6联合多西拉敏、甲氧氯普胺等药物镇吐治疗,但其症状改善效果不甚理想且病情易反复。中医治疗多以调中降气为法,辅以针灸、穴位贴敷等中医特色疗法。导师胡小芳教授临证多年,基于“妊娠呕吐属肝挟冲脉之火冲上”的病机,提出治疗妊娠恶阻当重视肝肾二脏,运用穴位贴敷联合自拟补肾清肝止吐方,临床效果显著。文章总结了胡小芳教授运用穴位贴敷联合补肾清肝止吐方治疗肝热型妊娠恶阻的经验,以期为临床辨证治疗提供新的思路与方法。

关键词：妊娠恶阻肝热型穴位贴敷补肾清肝止吐方胡小芳中医综合疗法

胡小芳运用苏木红藤败酱汤联合穴位注射治疗慢性盆腔炎的经验总结

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中国中医药现代远程教育 2018年第7期16卷 81-82页

作者：安迪胡小芳河南中医药大学河南郑州450000 河南中医药大学第一附属医院生殖科河南郑州450000

慢性盆腔炎(Chronic pelvic inflammatory disease,CPID)是临床常见的妇科疾病,症状体征复杂,诊断治疗困难。胡小芳教授总结30余年临床经验,认为湿毒内盛,稽留胞宫、冲任为其主要中医病机,利湿解毒、调理冲任为其主要治则,拟方苏木红藤... 详细信息

慢性盆腔炎(Chronic pelvic inflammatory disease,CPID)是临床常见的妇科疾病,症状体征复杂,诊断治疗困难。胡小芳教授总结30余年临床经验,认为湿毒内盛,稽留胞宫、冲任为其主要中医病机,利湿解毒、调理冲任为其主要治则,拟方苏木红藤败酱汤加减。同时根据西医发病机制、病原学及药理学,给予广谱抗生素穴位注射。适时苏木红藤败酱汤结合穴位注射治疗慢性盆腔炎效果显著。

关键词：盆腔炎性疾病穴位注射苏木红藤败酱汤带下病

Efficient and fair coin mixing for Bitcoin

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High Technology Letters 2022年第3期28卷 259-271页

作者：龚循武 hu Bin LIU Xiaodong ZHAO xiaofang Institute of Computing Technology Chinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Institute of Intelligent Computing Technology Chinese Academy of SciencesSuzhou 215000P.R.China

Bitcoin transactions are pseudo-anonymous,which can be exploited to reveal a user’s private information.To eliminate this threat,this paper presents FairMixer,a highly secure and efficient Bitcoin mixing system using the trusted execution environments(TEEs).With the TEE’s confidentiality and integrity guarantees for code and data,FairMixer enables a correct and privacy-preserving mixing process.However,a TEE-based implementation cannot prevent the manipulation of inputs to the mixer,such as mixing request submissions and blockchain feeds.Against this background,FairMixer captures users’ mixing requests via Bitcoin transactions for deterring a malicious service provider from dropping benign participants.To constrain misbehavior during a mixing mission,a misconduct monitoring mechanism and a penalty mechanism are introduced.The proposed scheme is fully compatible with Bitcoin and forces mixes to be accountable.Finally,a prototype of FairMixer is provided using Intel Software Guard Extensions(SGX) and its performance is evaluated in the Bitcoin Testnet.FairMixer mixes 700 inputs in just 8.39 s,which outperforms most existing decentralized mixers.

关键词： coin mixing trusted execution environment(TEE) blockchain accountable anonymity

Reconfigurable logic circuit design for stateful Boolean logic computing

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Science China(Information Sciences) 2021年第8期64卷 260-261页

作者： Li LUO Zhekang DONG Xiaofang HU Lidan WANG Shukai DUAN College of Electronic and Information Engineering Southwest University Brain-inspired Computing & Intelligent Control of Chongqing Key Lab School of Electronics and Information Hangzhou Dianzi University College of Artificial Intelligence Southwest University

Dear editor,The conventional von Neumann computer system has the memory wall problem [1], which limits the computation speed and causes high energy and latency of the computing system. To realize computing systems able to process massive data and complex computing tasks with high efficiency,a key and viable approach is in-memory computing.Memristor-based stateful logic design is a promising candidate for realizing the in-memory logic computing [2].

关键词： Reconfigurable logic circuit design for stateful Boolean logic computing

In situ SR-CT Experimental Study on the Directional Sintering of High-Temperature Superconductor YBCO Materials in the Microwave Fields

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Acta Metallurgica Sinica(English Letters) 2022年第1期35卷 67-77页

作者： Liangyuan Wang Lei Shen Yongcun Li Yuanjie Wang Yu Xiao Xingyi Zhang Feng Xu Xiaofang HU CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaAnhui230027China Key Laboratory of Mechanics on Disaster and Environment in Western China Attached to the Ministry of Education of China Lanzhou UniversityLanzhou730000China Shanxi Key Lab of Material Strength&Structural Impact College of Mechanical and Vehicle EngineeringTaiyuan University of TechnologyTaiyuan030024China

YBa_(2)Cu_(3)O_(7-x)(YBCO)is a kind of high-temperature superconducting material that has important application in information,energy,medical treatment,etc.,and the superconducting properties of YBCO are closely related to its internal microstructure.In this study,the microwave heating method was adopted to prepare the YBCO materials.The internal 3 D online evolution observation based on the synchrotron radiation computed tomography technology shows that there was directional grain growth phenomenon of YBCO during microwave sintering process.In local regions with special microstructure,these particles grew to the same point.Here,the theoretical models of single and multiple particles in the microwave electromagnetic fields were established.Based on these theoretical models and finite element analysis,it shows that the YBCO particles can modulate the distribution of electromagnetic fields,resulting in the significantly higher electric field intensity at the particle junctions than other regions.Moreover,there were very high electric field intensity and temperature gradients in the directions of particle growth.These factors were crucial in directional sintering.These results will provide theoretical basis and technical guidance for the controllable preparation and performance optimization of the internal microstructure of superconducting materials in the preparation process.

关键词： Synchrotron radiation computed tomography Microwave sintering Microstructure In situ

胡小芳运用补肾活血法治疗未破裂卵泡黄素化综合征的经验总结

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中国中医药现代远程教育 2018年第9期16卷 85-87页

作者：王瑞胡小芳河南中医药大学河南郑州450000 河南中医药大学第一附属医院生殖科河南郑州450000

本文总结胡小芳运用补肾活血法治疗未破裂卵泡黄素化综合征的经验。胡小芳认为未破裂卵泡黄素化综合征的主要病因病机为肾虚血瘀。故对于此类患者,胡小芳主张在月经周期之始即结合中西医疗法,采用补肾活血之法,调理冲任,疏经通络,鼓舞肾... 详细信息

本文总结胡小芳运用补肾活血法治疗未破裂卵泡黄素化综合征的经验。胡小芳认为未破裂卵泡黄素化综合征的主要病因病机为肾虚血瘀。故对于此类患者,胡小芳主张在月经周期之始即结合中西医疗法,采用补肾活血之法,调理冲任,疏经通络,鼓舞肾阳,改善卵巢血流状态,促进盆腔微循环,诱导卵子排出,调高排卵率和妊娠率。

关键词：未破裂卵泡黄素化综合征肾虚血瘀补肾活血法胡小芳不孕不育