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Co-design for an SoC embedded network controller

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第4期7卷 591-596页

作者： zou Lian-ying zou Xue-cheng Department of Electronic Science ＆ Technology Huazhong University of Science ＆ Technology Wuhan 430074 China

With the development of Ethernet systems and the growing capacity of modem silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Hardware/software co-design is a methodology for solving design problems in processor based embedded systems. In this work, we implemented a new 1-cycle pipeline microprocessor and a fast Ethemet transceiver and established a low cost, high performance embedded network controller, and designed a TCP/IP stack to access the Intemet. We discussed the hardware/software architecture in the forepart, and then the whole system-on-a-chip on Altera Stratix EP1S25F780C6 device. Using the FPGA environment and SmartBit tester, we tested the system＇s throughput. Our simulation results showed that the maximum throughput of Ethemet packets is up to 7 Mbps, that of UDP packets is up to 5.8 Mbps, and that of TCP packets is up to 3.4 Mbps, which showed that this embedded system can easily transmit basic voice and video signals through Ethemet, and that using only one chip can realize that many electronic devices access to the Intemet directly and get high performance.

关键词： System-on-Chip (SoC) Embedded Microprocessor Network controller TCP/IP Co-design

Relationships of along-the-track local variations of GPS RO impact parameter to strong local vertical gradient of wet refractivity in the tropics

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Science China Earth Sciences 2021年第11期64卷 2015-2026页

作者： Shengpeng YANG Xiaolei zou Joint Center of Data Assimilation for Research and Application Nanjing University of Information Science&TechnologyNanjing 210044China

Atmospheric refractivity fields are more strongly affected by more water vapor in the tropical lower troposphere than *** this study,based on model simulations,we first collocated the radio occultation(RO)data in 2009 from the Constellation Observing System for Meteorology,Ionosphere,and Climate(COSMIC)with CloudSat cloud profiling radar *** then investigate where and why a RO ray path intersects with other simulated rays of impact heights above and/or below the impact height of the *** the European Centre for Medium-Range Weather Forecasts ERA5 reanalysis as input to a raytracing observation operator,we show that the simulated impact parameters could vary along the ray in the tropical lower *** brevity,an intersection of a GPS RO ray path with rays above it or below it or both will be called an impact *** overlapping simulated ray trajectories over the vertical and horizontal gradients of refractivity in 2D occultation planes,impact multipath occurrences are vividly *** results show that the impact multipath is caused mostly by strong local vertical gradients of atmospheric wet refractivity mostly within 300 km horizontal distances from their perigee *** impact multipath occurs more frequently below 5-km impact height,with a maximum occurrence around the 3.4 km impact height(about 1.8 km geometric height).It is shown that both the simulated impact multipath phenomena and locally strong vertical gradients of wet refractivity are found in both cloudy and clear-sky conditions,and most frequently in presences of stratocumulus clouds.

关键词： GPS RO Multipath Troposphere

Design of structure and control system of semiconductor refrigeration box

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2792-2798页

作者： Meng Yu Zhiyun zou Academy of Military Sciences Beijing 102205China

In order to create low temperature environment for the valve testing,a new type of semiconductor refrigeration box based on semiconductor refrigeration chip and programmable logic controller(PLC)control system is *** power of the semiconductor refrigeration chip is determined by calculating the heat dissipation characteristics of the semiconductor refrigeration *** natural convection heat dissipation with forced air cooling,the heat sink of semiconductor refrigeration chip is *** the control strategy,switch control is combined with an intelligent control *** single neuron optimization algorithm based on quadratic optimization is adopted to adjust and optimize the parameters of the proportional-integral-derivative(PID)controllers in real *** into account the limited hardware capabilities of the PLC,the Jacobian information in parameter adjustment is redesigned into a simplified form of *** actual test results of refrigeration box show good control performance.

关键词： Semiconductor refrigeration Structure design PLC Optimization algorithm

Conceptual transition from molecular to atomic: unleashing a new era in hydrogen therapy for chronic disease

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National Science Review 2024年第4期11卷 17-18页

作者： Zhigang zou Eco-materials and Renewable Energy Research Center (ERERC) Jiangsu Key Laboratory for Nano Technology National Laboratory of Solid State Microstructures and Department of PhysicsNanjing University

The dysregulated overexpression of reactive oxygen and nitrogen species (RONS)intricately links to the occurrence and development of diverse chronic diseases[1–3]. Hydrogen therapy stands out as a promising treatment methodology recognized for effectively mitigating RONS and maintaining intracellular redox equilibrium, thereby yielding therapeutic benefits [4,5].

关键词： molecular from atomic chronic conceptual disease hydrogen therapy transition unleashing

Methanolysis of amides under high-temperature and high-pressure conditions with a continuous tubular reactor

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Chinese Journal of Chemical Engineering 2023年第6期58卷 170-178页

作者： Pengcheng zou Kai Wang The State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

The methanolysis of amides,which is widely employed in the synthetic organic chemistry,hardly occurs under mild *** safely and controllably intensify the methanolysis reaction with hightemperature and high-pressure environment,a continuous tubular reaction technology is developed,whose space-time yield is over twice of that of the conventional batch *** methanolysis of acetanilide is selected as the representative reaction,and the influences of temperature,pressure,reactant and catalyst concentration,and residence time on the reaction performances are systematically *** the advantages of precise temperature and reaction time control by the tubular reactor,the kinetics of acetanilide methanolysis are determined and compared to the kinetics of acetanilide hydrolysis *** tubular reaction method is also employed to test a variety of other amides to show the effects of substituents,steric hindrance,and alkalinity on the reaction rate of methanolysis.

关键词： Amide methanolysis reaction Flow chemistry Continuous reaction Process intensification

Average Estimation of Semiparametric Models for High-Dimensional Longitudinal Data

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Journal of Systems Science & Complexity 2020年第6期33卷 2013-2047页

作者： ZHAO Zhihao zou Guohua School of Mathematicnl Sciences Capital Normal UniversityBeijing 100048China

Model average receives much attention in recent *** paper considers the semiparametric model averaging for high-dimensional longitudinal *** minimize the prediction error,the authors estimate the model weights using a leave-subject-out cross-validation *** optimality of the proposed method is proved in the sense that leave-subject-out cross-validation achieves the lowest possible prediction loss *** studies show that the performance of the proposed model average method is much better than that of some commonly used model selection and averaging methods.

关键词： Asymptotic optimality high-dimensional longitudinal data leave-subject-out cross-validation model averaging semiparametric models

Demonstration of a distributed feedback laser diode working as a graded-potential-signaling photonic neuron and its application to neuromorphic information processing

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Science China(Information Sciences) 2020年第6期63卷 176-183页

作者： Bowen MA Weiwen zou State Key Laboratory of Advanced Optical Communication Systems and Networks Intelligent Microwave Lightwave Integration Innovation Center (iMLic) Department of Electronic Engineering Shanghai Jiao Tong University

We find that a commonly-used distributed feedback laser diode(DFB-LD) can work as a gradedpotential-signaling photonic neuron. Through theoretical and experimental demonstration, DFB-LDs are proved useful for three graded-potential-signaling-based neuromorphic processing applications of the pattern recognition, the single-wavelength implementation of spike timing dependent plasticity(STDP), and the sound azimuth measurement. The pattern recognition with a full-width-at-half-maximum(FWHM) of 1 μs is realized in the experiment.

关键词： neuromorphic photonics graded-potential-signaling photonic neuron pattern recognition optical spike timing dependent plasticity sound azimuth measurement

Coherence,Connectedness,Dynamic Linkages Among Oil and China's Sectoral Commodities with Portfolio Implications

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Journal of Systems Science & Complexity 2022年第3期35卷 1052-1097页

作者： CUI Jinxin zou Huiwen School of Economics and Management Fuzhou UniversityFuzhou 350108China

This paper investigates the time-frequency dependence,return and volatility connectedness,dynamic linkages,and portfolio diversification gains among oil and China’s sectoral commodities,namely,Petrochemicals(CIFI),Grains(CRFI),Energy(ENFI),Non-ferrous metals(NFFI),Oil&Fats(OOFI),and Softs(SOFI),utilizing a proposed research framework that contains the wavelet coherence,novel TVP-VAR based connectedness,and the cDCC-,DECO-FIAPARCH(1,d,1)*** empirical results demonstrate that global oil market exhibits a relatively higher(lower)coherence with ENFI,NFFI,and OOFI(CRFI)on the long-term time horizon and the oil market leads China’s sectoral commodities during most sample *** crude oil market transmits significant connectedness to China’s sectoral commodities,especially the energy commodity sector(ENFI).The dynamic return and volatility total spillovers tend to intensify and exhibit significant fluctuations during the GFC and the oil price ***,the time-varying linkages among oil and China’s sectoral commodities are positive and fluctuant,mainly at a relatively low *** dynamic return and volatility connectedness,multi-view linkages,optimal portfolio weights,and hedging ratios display significant time-varying *** oil-commodity nexus offers diversification benefits and the optimal-weighted portfolio presents the best variance and downside risk reduction ***,risk management effectiveness is market-condition-dependent and heterogeneous across different commodity sectors and *** paper can not only help investors and market regulators to capture the complex interconnectedness and risk transmission trajectory among oil and China’s sectoral commodities but also benefits for investors and portfolio managers to construct optimal portfolios and hedging strategies.

关键词： China’s sectoral commodities crude oil portfolio diversifications return and volatility spillovers TVP-VAR connectedness

Image Fusion Based on Bioinspired Rattlesnake Visual Mechanism Under Lighting Environments of Day and Night Two Levels

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Journal of Bionic Engineering 2024年第3期21卷 1496-1510页

作者： Yong Wang Hongmin zou College of Communication Engineering Jilin UniversityChangchun130012China

This study,grounded in Waxman fusion method,introduces an algorithm for the fusion of visible and infrared images,tailored to a two-level lighting environment,inspired by the mathematical model of the visual receptive field of rattlesnakes and the two-mode cells'*** research presented here is segmented into three *** the first segment,we design a preprocessing module to judge the ambient light intensity and divide the lighting environment into two levels:day and *** second segment proposes two distinct network structures designed specifically for these daytime and nighttime *** the daytime images,where visible light information is predominant,we feed the ON-VIS signal and the IR-enhanced visual signal into the central excitation and surrounding suppression regions of the ON-center receptive field in the B channel,***,for nighttime images where infrared information takes precedence,the ON-IR signal and the Visual-enhanced IR signal are separately input into the central excitation and surrounding suppression regions of the ON-center receptive field in the B *** outcome is a pseudo-color fused *** third segment employs five different no-reference image quality assessment methods to evaluate the quality of thirteen sets of pseudo-color images produced by fusing infrared and visible *** images are then compared with those obtained by six other methods cited in the relevant *** empirical results indicate that this study's outcomes surpass the comparative results in terms of average gradient and spatial *** one or two sets of fused images underperformed in terms of standard deviation and entropy when compared to the control *** sets of fused images did not perform as well as the comparison in the QAB/F *** conclusion,the fused images generated through the proposed method show superior performance in terms of scene detail,visual perception,and image sharpness

关键词： Rattlesnake Visible image Infrared image Daylight Bionic