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Quantitative Method Based on Cotangent Similarity Degree in Three-Valued ?ukasiewicz Logic

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Chinese Journal of Electronics 2021年第1期30卷 134-144页

作者： yu peng School of Arts and Sciences Shaanxi University of Science and Technology

The main purpose of this paper is to establish a type of quantitative model by using the contangent similarity function in the three-valued?ukasiewicz propositional logic system ?;. We introduce the concepts of the cotangent similarity degree, cotangent pseudo-distance and cotangent truth degree of the propositions, together with their basic properties in ?;.We investigate the relationship between the cotangent truth degree and contangent pseudo-distance, and prove the continuity of the logical connectives ?, ∨ and → in the ?;logical metric space. We propose a graded reduction method and three types of graded reasoning frameworks on the propositions set F（S）, and provide several examples and basic properties of it.

关键词： three-valued Łukasiewicz logic algebra Ł3 logical metric space Łukasiewicz propositional logic system cotangent truth degree cotangent similarity degree quantitative method quantitative model inference mechanisms contangent pseudodistance cotangent pseudodistance fuzzy logic graded reduction method contangent similarity function formal logic probability rough set theory logical connectives multivalued logic

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骨关节炎的氧化应激相关基因和免疫浸润分析

中国组织工程研究 2025年第2期29卷 302-311页

作者：吴傲于鹏滕加文孔鹏卞泗善山东中医药大学第一临床医学院山东省济南市250000 山东中医药大学附属医院山东省济南市250000

背景:目前对于骨关节炎的发病机制尚不清楚,缺乏有效控制疾病的手段,且研究多集中在免疫领域,对氧化应激领域研究较少。目的:探索氧化应激与免疫浸润在骨关节炎中的作用,并预测相关miRNA和治疗药物。方法:从GEO数据库中获取GSE55235数据... 详细信息

背景:目前对于骨关节炎的发病机制尚不清楚,缺乏有效控制疾病的手段,且研究多集中在免疫领域,对氧化应激领域研究较少。目的:探索氧化应激与免疫浸润在骨关节炎中的作用,并预测相关miRNA和治疗药物。方法:从GEO数据库中获取GSE55235数据集(10例骨关节炎样本和10例健康对照样本)和GSE55457数据集(10例骨关节炎样本和10例健康对照样本)进行合并,获取差异表达基因,并结合氧化应激基因得到差异表达氧化应激基因。对差异表达氧化应激基因进行KEGG、GO富集分析,并使用GSEA富集分析评价骨关节炎通路和生物过程。使用STRING在线平台和Cytoscape软件建立了蛋白质相互作用网络,运行Degree算法得到关键基因,从GEO数据库中获取GSE1919作为验证数据集,对关键基因进行差异分析及受试者工作特征曲线分析,得到核心基因。此外,用CIBERSORT对免疫浸润进行评估,并探索核心基因与免疫细胞的相关性,使用TargetScan对核心基因进行miRNA预测及使用DSigDB数据库对靶点药物进行预测。结果与结论:①确定了65个差异表达氧化应激基因和5个核心基因(IL1B、CXCL8、MYC、NFKBIA、JUN);②富集分析结果显示,差异表达氧化应激基因的主要聚焦点包括氧化应激、白细胞介素17、破骨细胞分化、流体剪切应力以及动脉粥样硬化等通路;③5个核心基因的受试者工作特征曲线下面积均>0.85,说明对诊断骨关节具有良好的特异性和敏感性,且与免疫细胞密切关联;④miRNA的预测结果是hsa-miR-3937,治疗小分子药物包括二甲双胍、离子霉素和塞来昔布等。结果表明:骨关节炎中存在氧化应激与免疫浸润,且免疫浸润参与激活氧化应激。核心基因及预测的miRNA可作为诊断骨关节炎的新型标志物,预测的小分子药物可治疗骨关节炎。

关键词：骨关节炎氧化应激免疫浸润差异基因生物标志物 miRNA 药物预测

A Novel Scheme for Hundred-Hertz Linewidth Measurements with the Self-Heterodyne Method

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Chinese Physics Letters 2013年第8期30卷 91-94页

作者： peng yu School of Physics Beijing Institute of TechnologyBeijing 100081

We propose a novel scheme to accurately determine the hundred-hertz linewidth using the delayed self-heterodyne method,in which the delay time is far less than the coherence time of the *** exceeds the former understanding of the delayed self-heterodyne technique,which requires a prohibitively long *** self-heterodyne autocorrelation function and power spectrum are evaluated,and by numerical analysis we ensure that-3 dB of the power spectrum is applied to the self-heterodyne linewidth *** a laser linewidth of less than 100 Hz,the linewidth can be measured directly by a 10 km fiber,and in a more general case,the linewidth can be deduced from-20 dB or-40 dB of the fitting Lorentzian curve.

关键词： heterodyne autocorrelation fiber

A modified theta projection model for creep behavior of RPV steel 16MND5

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Journal of Materials Science & Technology 2020年第12期47卷 231-242页

作者： peng yu Weimin Ma Division of Nuclear Power Safety Royal Institute of Technology(KTH)Stockholm 10691Sweden

During a hypothetical severe accident of light water reactors,the reactor pressure vessel(RPV) could fail due to its creep under the influence of high-temperature ***,modelling of creep behavior of the RPV is paramount to reactor safety analysis since it predicts the transition point of accident progression from in-vessel to ex-vessel *** the present study we proposed a new creep model for the classical French RPV steel 16 MND5,which is adapted from the "theta-projection model" and contains all three stages of a creep *** curves are expressed as a function of time with five model parameters θ_i(i=1-4 and m).A model parameter dataset was constructed by fitting experimental creep curves into this *** correlate the creep curves for different temperatures and stress loads,we directly interpolate the model’s parameters θ_i(i=1-4 and m) from this dataset,in contrast to the conventional "theta-projection model" which employs an extra single correlation for each θ_i(i=1-4 andm),to better accommodate all experimental curves over the wide ranges of temperature and stress *** also put a constraint on the trend of the creep strain that it would monotonically increase with temperature and stress load.A good agreement was achieved between each experimental creep curve and corresponding model’s *** widely used time-hardening and strain-hardening models were performing reasonably well in the new method.

关键词： 16MND5 steel Creep modelling Tertiary stage Reactor pressure vessel Theta projection model

A recollement construction of Gorenstein derived categories

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Frontiers of Mathematics in China 2018年第3期13卷 691-713页

作者： peng yu Department of Elementary Education Changsha Normal University Changsha 410100 China

We first give an equivalence between the derived category of a locally finitely presented category and the derived category of contravariant functors from its finitely presented subcategory to the category of abelian groups, in the spirit of Krause＇s work [Math. Ann., 2012, 353： 765-781]. Then we provide a criterion for the existence of recollement of derived categories of functor categories, which shows that the recollement structure may be induced by a proper morphism defined in finitely presented subcategories. This criterion is then used to construct a recollement of derived category of Gorenstein injective modules over CM-finite 2-Gorenstein artin algebras.

关键词： Recollements functor categories derived categories Gorenstein algebras weak excellent extension locally finitely presented categories

A Review of FPGA-Based Custom Computing Architecture for Convolutional Neural Network Inference

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Chinese Journal of Electronics 2021年第1期30卷 1-17页

作者： peng Xiyuan yu Jinxiang YAO Bowen LIU Liansheng peng yu School of Electronics and Information Engineering Harbin Institute of Technology

Convolutional neural network(CNN)has been widely adopted in many tasks. Its inference process is usually applied on edge devices where the computing resources and power consumption are *** present, the performance of general processors cannot meet the requirement for CNN models with high computation complexity and large number of parameters. Field-programmable gate array(FPGA)-based custom computing architecture is a promising solution to further enhance the CNN inference *** software/hardware co-design can effectively reduce the computing overhead, and improve the inference performance while ensuring accuracy. In this paper, the mainstream methods of CNN structure design, hardwareoriented model compression and FPGA-based custom architecture design are summarized, and the improvement of CNN inference performance is demonstrated through an example. Challenges and possible research directions in the future are concluded to foster research efforts in this domain.

关键词： inference mechanisms computing resources hardware-oriented model compression CNN structure design computing overhead convolutional neural nets electronic engineering computing field-programmable gate array-based custom computing architecture computation complexity FPGA-based custom computing architecture design computational complexity convolutional neural network inference CNN inference performance power consumption field programmable gate arrays

The Design of Second-order Nonlinear Optical Dendrimers:From"Branch Only"to"Root Containing"

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Chinese Journal of Polymer Science 2017年第7期35卷 793-793,794-798页

作者： peng-yu Chen 李振 Department of Chemistry Wuhan University

Dendrimers are considered as a promising family of organic second-order nonlinear optical （NLO） polymers because of their well-defined structures, easily modified peripheral functional groups, interior branches and central cores. In order to obtain NLO materials with high performance, dendrimer structures have been optimized in the past years, such as the ＂branch only＂ and the ＂root containing＂ type dendrimers. This feature article highlights the achievements in exploring the rational design of dendrimers, partially marked by their macroscopic NLO performance.

关键词： Second-order nonlinear optics Hyperbranched polymer Dendrimer Tree

Fully Pipelined Soft Vector Processor as a CPU Accelerator

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Chinese Journal of Electronics 2017年第6期26卷 1198-1205页

作者： PANG Yeyong WANG Shaojun peng yu peng Xiyuan Department of Automatic Test and Control Harbin Institute of Technology

FPGA based soft vector processing accelerators are used frequently to perform highly parallel data processing tasks. Since they are not able to implement complex control manipulations using software, most FPGA systems now incorporate either a soft processor or hard processor. A FPGA based AXI bus compatible vector accelerator architecture is proposed which utilises fully pipelined and heterogeneous ALU for performance, and microcoding is employed for reusability. The design is tested with several design examples in four different lane *** with Central processing unit(CPU), Digital signal processor(DSP), Altera C2H tool and Open CL SDK implementations, the vector processor improves on execution time and energy consumption by factors of up to 6.6 and 6.4 respectively.

关键词： FPGA Vector processor Microprocessor Accelerator

A New Method for the Atomic Ground-State Energy in the Screened Coulomb Potential

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Communications in Theoretical Physics 2001年第11期36卷 531-534页

作者： yu peng-peng GUO Hua Department of Technical Physics and MOE Key Laboratory of Heavy-Ion Physics Peking UniversityBeijing 100871China Department of Technical Physics and MOE Key Laboratory of Heavy-Ion PhysicsPeking UniversityBeijing 100871China

The new method proposed recently by Friedberg,Lee and Zhao is applied to the derivation of the atomic ground-state energy with the inclusion of the screening *** present results are compared with those obtained in the... 详细信息

关键词： ground-state energy,screened Coulomb potential,variational approach