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Asymptotic stability criteria for Delayed Genetic Regulatory Networks with Reaction-Diffusion Terms 36

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Asymptotic stability criteria for Delayed Genetic Regulatory...

Merkle Tree Digital Signature and Trusted Computing Platform

第36届中国控制会议

作者： xiaofei fan Yuanyuan Han Xian Zhang Heilongjiang University

ISBN: (纸本)9781538629185

This paper is related to the problem of stability analysis for delayed genetic regulatory networks（DGRNs） with reaction-diffusion terms under Dirichlet boundary conditions. The nonlinear regulation function of DGRNs is assumed to be of the Hill form. By introducing novel integral terms in Lyapunov–Krasovskii functional and employing Wirtinger-type integral inequality, convex combination approach, Green’s identity, reciprocally convex combination approach, and Wirtinger’s inequality,an asymptotic stability criterion of the DGRNs is established in terms of linear matrix inequalities（LMIs）. The stability criterion depends on the bounds of the delays and their derivatives. In addition, the obtained criteria are also ***, two numerical examples are presented to illustrate the effectiveness of the theoretical results.

关键词： Delayed Genetic Regulatory Networks(DGRNs) Reaction-Diffusion Terms(RDTs) Stability Analysis WirtingerType Integral Inequality(WTII)

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1467-1472页

作者： WANG xiaofei HONG fan TANG Xueming CUI Guohua College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 Hubei China

Lack of efficiency in the initial key generation process is a serious shortcoming of Merkle tree signature scheme with a large number of possible signatures. Based on two kinds of Merkle trees, a new tree type signature scheme is constructed, and it is provably existentially unforgeable under adaptive chosen message attack. By decentralizing the initial key generation process of the original scheme within the signature process, a large Merkle tree with 6.87×10^10 possible signatures can be initialized in 590 milliseconds. Storing some small Merkle trees in hard disk and memory can speed up Merkle tree signature scheme. Mekle tree signature schemes are fit for trusted computing platform in most scenarios.

关键词： digital signature one-time signature Merkle tree trusted computing platform

Multispectral Drone Imagery and SRGAN for Rapid Phenotypic Mapping of Individual Chinese Cabbage Plants

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Plant Phenomics 2022年第1期4卷 1-11页

作者： Jun Zhang Xinxin Wang Jingyan Liu Dongfang Zhang Yin Lu Yuhong Zhou Lei Sun Shenglin Hou xiaofei fan Shuxing Shen Jianjun Zhao State Key Laboratory of North China Crop Improvement and Regulation Hebei Agricultural University071000 BaodingChina College of Mechanical and Electrical Engineering Hebei Agricultural University071000 BaodingChina Mountain Area Research Institute Hebei Agricultural University071001 BaodingChina College of Horticulture Hebei Agricultural University071000 BaodingChina Hebei Academy of Agriculture and Forestry Sciences 050000 ShijiazhuangChina

The phenotypic parameters of crop plants can be evaluated accurately and quickly using an unmanned aerial vehicle(UAV)equipped with imaging *** this study,hundreds of images of Chinese cabbage(Brassica rapa ***)germplasm resources were collected with a low-cost UAV system and used to estimate cabbage width,length,and relative chlorophyll content(soil plant analysis development[SPAD]value).The super-resolution generative adversarial network(SRGAN)was used to improve the resolution of the original image,and the semantic segmentation network Unity Networking(UNet)was used to process images for the segmentation of each individual Chinese cabbage.

关键词： germplasm hundreds equipped

New Public Key Cryptosystems from Combinatorial Group Theory

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Wuhan University Journal of Natural Sciences 2006年第5期11卷 1267-1270页

作者： TANG Xueming WANG xiaofei HONG fan CUI Guohua College of Computer Science and Technology HuazhongUniversity of Science and Technology Wuhan 430074Hubei China

External direct product of some low layer groups such as braid groups and general Artin groups, with a kind of special group action on it, provides a secure cryptographic computation platform, which can keep secure in the quantum computing epoch. Three hard problems on this new platform, Subgroup Root Problem, Multi-variant Subgroup Root Problem and Subgroup Action Problem are presented and well analyzed, which all have no relations with conjugacy. New secure public key encryption system and key agreement protocol are designed based on these hard problems. The new cryptosystems can be implemented in a general group environment other than in braid or Artin groups.

关键词： public key cryptosystem key agreement protocol combinatorial group theory Artin group external direct product quantum computing

一步之遥,八年光阴:丙肝病原体的发现到证明之路

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中国科学院院刊 2021年第4期36卷 490-501页

作者：范筱斐周程北京大学哲学系北京100871 北京大学医学人文学院北京100191

2020年的诺贝尔生理学或医学奖授予了在发现丙肝病毒(HCV)方面作出突出贡献的哈维·阿尔特(Harvey ***)、迈克尔·霍顿(Michael Houghton)和查尔斯·赖斯(Charles ***)。然而,从1989年霍顿捕获HCV到1997年赖斯证明HCV能引发肝炎,间隔了... 详细信息

2020年的诺贝尔生理学或医学奖授予了在发现丙肝病毒(HCV)方面作出突出贡献的哈维·阿尔特(Harvey ***)、迈克尔·霍顿(Michael Houghton)和查尔斯·赖斯(Charles ***)。然而,从1989年霍顿捕获HCV到1997年赖斯证明HCV能引发肝炎,间隔了8年时间。这看似一步之遥的距离何以耗时如此之久?文章通过回顾文献,对这一时期的研究脉络进行了梳理,明确了包括赖斯团队在内的不同研究者对于推进HCV相关认识所作的具体贡献。同时,针对研究过程中的两个关键节点——病毒RNA基因组3′末端的准确测序和感染性分子克隆的建立,文章从技术储备、路径依赖和目标定位的角度分析了赖斯团队为何能在科学研究竞争中拔得头筹。

关键词：丙肝病毒 cDNA克隆科赫原则科学研究诺贝尔奖自然科学史

Spin-orbit torque efficiency enhancement to tungsten-based SOT-MTJs by interface modification with an ultrathin MgO

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Science China(Information Sciences) 2024年第1期67卷 316-317页

作者： Shiyang LU Xiaobai NING Hongchao ZHANG Sixi ZHEN xiaofei fan Danrong XIONG Dapeng ZHU Gefei WANG Hong-Xi LIU Kaihua CAO Weisheng ZHAO Fert Beijing Institute School of Integrated Science and EngineeringBeihang University Truth Memory Corporation

Spin-orbital torque (SOT) based three-terminal magnetic tunnel junctions (MTJs) have attracted much interest as the next generation magnetic random-access memory (MRAM)key device both in the academy and the industry. This is because SOT-MTJs feature high endurance and fast switching speed, benefiting tremendously from the separation of read/write current paths and less incubation time during the write in contrast to the spin-transfer torque (STT) MTJs [1].

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Dissecting the Contributing Role of Divergent Adipose Tissue to Multidimensional Frailty in Cirrhosis

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Journal of Clinical and Translational Hepatology 2023年第1期11卷 58-66页

作者： Lihong Mao Chaoqun Li Xiaoyu Wang Mingyu Sun Yifan Li Zihan Yu Binxin Cui Gaoyue Guo Wanting Yang Yangyang Hui xiaofei fan Jie Zhang Kui Jiang Chao Sun Department of Gastroenterology and Hepatology Tianjin Medical University General HospitalTianjinChina Tianjin Institute of Digestive Disease Tianjin Medical University General HospitalTianjinChina Department of Internal Medicine Tianjin Hexi HospitalTianjinChina Department of Gastroenterology Tianjin Medical University General Hospital Airport HospitalTianjinChina

Background and Aims:Emerging evidence has demonstrated that abnormal body composition may potentiate the development of frailty,whereas little work focuses on the role of divergent adipose ***,we aimed to determine the potential contribution of adipose tissue distribution to multidimensional frailty in decompensated ***:We conducted a retrospective cohort *** adipose tissues were assessed by computed tomography-derived subcutaneous adipose tissue index(SATI),visceral adipose tissue index(VATI)and total adipose tissue index(TATI),*** was identified by our validated self-reported Frailty *** binary logistic models incorporating different covariates were established to assess the relationship between adipose tissue distribution and ***:The study cohort comprised 245 cirrhotic patients with 45.3%being *** median Frailty Index,body mass index(BMI)and model for end-stage liver disease(MELD)score were 0.11,24.3 kg/m2 and 8.9 points,*** both men and women,patients who were frail exhibited lower levels of SATI in comparison with nonfrail *** inversely correlated with Frailty Index in the entire cohort(rs=−0.1361,p=0.0332).Furthermore,SATI or TATI was independently associated with frail phenotype in several multiple logistic regression models adjusting for age,BMI,presence of ascites,sodium,Child-Pugh class or MELD score in ***:In the context of decompensated cirrhosis,low SATI and concomitant TATI were associated with higher risk of being *** findings highlight the importance to further apply tissue-specific tools of body composition in place of crude metric like BMI.

关键词： Frailty Adipose tissue Liver cirrhosis Subcutaneous adipose tissue index

Reduced-Order State Observers for Genetic Regulatory Networks with Time-Varying Delays

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Reduced-Order State Observers for Genetic Regulatory Network...

第30届中国控制与决策会议

作者： xiaofei fan Xin Li Xian Zhang Shasha Xiao Institute of Systems Science Northeastern University School of Mathematical Science Heilongjiang University

This paper involves the reduced-order state observer design for genetic regulatory networks with time-varying delays. The aim is to design reduced-order state observer based on available network outputs. A Lyapunov–Krasovskii functional including quadruplicate integrals is introduced, and its derivative is estimated by using the appropriate inequalities, reciprocal convex technique and convex technique. Delay-dependent sufficient conditions expressed by linear matrix inequalities are obtained to ensure that the resultant error system is asymptotically stable. Moreover, the concrete expression of the desired reduced-order state observer is given. Finally, a numerical example is presented to explain the obtained theoretical results.

关键词： Reduced-order state observer Genetic regulatory networks Lyapunov–Krasovskii functional

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食品金属元素检测研究概述

环境卫生学杂志 2014年第2期4卷 203-208页

作者：范小飞茅力南京医科大学公共卫生学院南京江宁区疾病预防控制中心

近年来,食品金属污染事件时有发生,严重威胁人们的生命安全。本文就食品中金属检测的样品前处理技术、检测方法以及实验空白值的控制进行综述,以期为食品安全问题提供借鉴与参考。

关键词：食品金属前处理检测方法空白值