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MEMS reservoir computing system with stiffness modulation for multi-scene data processing at the edge

Microsystems & Nanoengineering 2024年第3期10卷 421-432页

作者： Xiaowei Guo Wuhao Yang Xingyin Xiong Zheng Wang Xudong zou The State Key Laboratory of Transducer Technology Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijingChina QILU Aerospace Information Research institute JinanChina

Reservoir computing(RC)is a bio-inspired neural network structure which can be implemented in hardware with *** has been applied across various fields such as memristors,and electrochemical reactions,among which the microelectro-mechanical systems(MEMS)is supposed to be the closest to sensing and computing *** previous MEMS RCs have demonstrated their potential as reservoirs,the amplitude modulation mode was found to be inadequate for computing directly upon *** achieve this objective,this paper introduces a novel MEMS reservoir computing system based on stiffness modulation,where natural signals directly influence the system stiffness as *** this innovative concept,information can be processed locally without the need for advanced data collection and *** present an integrated RC system characterized by small volume and low power consumption,eliminating complicated setups in traditional MEMS RC for data discretization and *** simulation and experiment were conducted on our *** performed nonlinearity tuning for the resonator and optimized the post-processing algorithm by introducing a digital mask ***,our MEMS RC is capable of both classification and forecasting,surpassing the capabilities of our previous non-delay-based *** method successfully processed word classification,with a 99.8%accuracy,and chaos forecasting,with a 0.03.5 normalized mean square error(NMSE),demonstrating its adaptability for multi-scene data *** work is essential as it presents a novel MEMS RC with stiffness modulation,offering a simplified,efficient approach to integrate sensing and *** approach has initiated edge computing,enabling emergent applications in MEMS for local computations.

关键词： computing hardware stiffness

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MINERALIZATION AGES OF GOLD-HYDROTHERMAL DEPOSITS IN NORTHERN ZONE OF EASTERN KUNLUN MOUNTAINS BASED ON FISSION TRACK ANALYSIS

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地学前缘 2000年第S1期7卷 329-330页

作者： Yuan Wanming 1,Wang Shicheng 1,Mo Xuanxue 2.Wang Lanfen 1[WT5,5”BX](1 institute of high {2. {3., chinese academy of Sciences, beijing 100080,China 2.China University of Geosciences, beijing 100083.China)

The age of mineralization in a mining area is a primary factor in various researches related to ore\|forming process. It is that the uncertainty of mineralization ages of gold ore deposits in northern zone of eastern Kunlun Mountains, Qinghai Province, restrains to probe the relationship of the deposits to the regional tectonic evolution. This paper documents the fission track method used to determine the ages of gold ore deposits in eastern Kunlun Mountains and considers the implication for the origin of the *** Kunlun Mountains is the northern part of the Qinghai—Tibet Plateau and is of three deep\|seated fault belts in about EW extension. This work mainly includes three gold ore districts. All of them, in the north of Mid\|Kunlun fault belt, belong to northern part of eastern Kunlun Mountains. The Yanjingou district, with geographical coordinate 96°00’E and 3.°10’N, is located 60 km north of Hongqigou district . Both of them are large, typical tectonoalteration gold deposits and were formed in similar geological setting. Hongshuihe ore district is located 50 km east of Yanjingou district and includes tectonoalteration and magmatic cryptoexplosive gold deposits. Outcroped strata are dominantly Jinshuikou Group metamorphic rocks of Lower Proterozoic erathem. The occurrence area of igneous rocks, especially granitoid, accounts for about 90% in first two districts and become less in Hongshuihe district. The gold deposits occur in NW\|striking fault belts. The Rb\|Sr isochron age and K\|Ar isotopic age of Moyite relevant to the gold mineralization are respectively 2.8 2.Ma and 2.7 1Ma. Rb\|Sr dating of diorite porphyrite is 2.9 09Ma. Sericite selected from Yanjingou orebody has 2.2.9Ma K\|Ar age. The ore in Hongqigou district has 197Ma K\|Ar age and 2.0Ma model age of Pb isotope of galena.

关键词： mineralization age thermal event fission track thermochron ology fission track analysis eastern Kunlun Mountains

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INVESTIGATION ON THE VALENCE STATE OF Ce ATOMIN BULK AND NANOCRYSTAL CeO_2.BY X-RAY ABSORPTION ANDPHOTOEMISSION

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 511-516页

作者： K. Ibrahim, Z.Y. Wu, J. Zhang, M.I. Abbas, F.Q. Liu and H.J. Qian (beijing Synchrotron Radiation Laboratory, institute of {2. {3. physics, The chinese academy of Sciences, P.O. Box 918, beijing 10003., China) beijing Synchrotron Radiat. Lab. Inst. of High Energy Phys. Chinese Acad. of Sci. P.O. Box 918 Beijing 100039 China

Valence band photoemission spectra (PES) for both bulk and nanocrystal CeO2.have been measured on and off resonance of Ce 4d-4f absorption edge. The PES show that the bulk and nanocrystal CeO2.of diameter ranging from 8nm to 50nm exhibit a peak near Fermi edge with binding energy of about 1.8eV. The 1.8eV peak shows a strong dependence on excitation energy, although it looks like the contribution of Ce{2. ion following the data reported in literatures. However, according to the results of resonance photoemission and X-ray absorption spectra at 1s edge, this electronic structure may be associated to the intermediate state charge transfer effects.

关键词： rare earth oxide photoemission electronic structure photoabsorption

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Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel

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Journal of Iron and Steel Research International 2011年第S1期18卷 312-315页

作者： ZHAO Lian-yu 1,2.WEI Yan 1,SHAN Yi-yin 1,YANG Ke 1 (1.institute of Metal Research,chinese {2. of Sciences,Shenyang 110016,Liaoning,China 2.Graduate School of chinese {2. of Sciences,beijing 100049,China) chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China chinese Acad Sci Grad Sch Beijing 100049 Peoples R China

Grain refinement improves not only strength but also *** reaustenized grains were discovered to form along the grain boundaries and lath boundaries in an as rolled high-strength low-alloy (HSLA) steel when heated to double phase *** number and size of the small reaustenized grains were revealed to depend mainly on temperature in the range of 700 to 760℃.These small reaustenized grains were deduced to form by consuming *** mechanical property tests showed that they resulted in slight changes to tensile ***,the sample heated at 740℃ produced a peak Charpy V-notch (CVN) impact energy of 2.8J when tested at-{2.℃.Fractography showed that the facture surface of the 740℃ heated impact sample exhibited the smallest brittle zone away from the notch root and a large dimple zone lay ahead of the notch tip,which demonstrated the highest toughness.

关键词： high-strength low-alloy steel reaustenization grain refinement tensile property

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A new method for constructing total energy conservation algorithms

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Progress in Natural Science:Materials International 2003年第1期13卷 59-62页

作者： ZHAO Ying , JI Zhongzhen, YANG Hongwei and WANG Bin (1. LASG, institute of Atmospheric physics, {2. {3. of Sciences, beijing 10002., China 2. institute of Science, PLA University of Science and Technology, Nanjing 2.1101, China) chinese Acad Sci Inst Atmospher Phys LASG Beijing 100029 Peoples R China PLA Univ Sci & Technol Inst Sci Nanjing 211101 Peoples R China

Abstract Based on a basic rule for the research on numerical methods which requires that the properties of the original problemshould be preserved as much as possible under discretization, a new method for constructing total energy conservation algorithms is pre-sented. By this method, all kinds of implicit schemes with energy conservation laws including many classical conservation schemes can beconstructed from a kind of special function. Also, the concrete criterion for judging total energy conservation schemes is given. Numericaltests show that these new schemes are effective.

关键词： total energy conservation difference scheme quasi-antisymmetric operator norm-preserving operator.

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Fundamental study of CO_2.control technologies and policies in China

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Science China(Technological Sciences) 2008年第7期51卷 857-870页

作者： JIN HongGuang1, ZHANG XiLiang2. GAO Lin1, YUE Li2. HE JianKun2.& CAI RuiXian1 1 institute of Engineering Thermophysics, {2. {3. of Sciences, beijing 100080, China 2.institute of Nuclear and New energy Technology, Tsinghua University, beijing 100084, China institute of Engineering Thermophysics Chinese Academy of Sciences Beijing China institute of Nuclear and New energy Technology Tsinghua University Beijing China

The technical roadmap and policies for CO2.mitigation suitable for China are a common center of attention in the fields of energy, environment, and management science in the country. Emphasizing interaction between technical research and policy research, this work discovers the potential breakthrough in the integrated field. The technical difficulties of recovering CO2.are pointed out, the mechanism of combining CO2.recovery with energy conversion is investigated, and the basic principle for integrating an environmental-friendly energy system is discussed. Moreover, the formulation of a new energy system that can recover CO2.with very low or even zero energy penalty is proposed, while the assessment methodology and model system for the technical roadmap of CO2.emission control are developed. Finally, a new technical roadmap constructing an energy network suitable for China is proposed, which may provide a new way for the development of sustainable energy and environment technologies.

关键词： CO2 capture and storage technical roadmap energy policy

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A new approach of cascade utilization of the chemical energy of fuel

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Progress in Natural Science:Materials International 2006年第5期16卷 518-523页

作者： HAN Wei, JIN Hongguang and LIN Rumou ( institute of Engineering Thermophysics, {2. {3. of Sciences, beijing 100080, China Graduate School of the {2. {3. of Sciences, beijing 100080, China) institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100080 China Graduate School of the chinese academy of Sciences Beijing 100080 China

The indirect release of chemical energy of fuel is investigated, and a new mechanism is proposed to identify the cascade utilization of chemical energy of fuel more clearly. Based on the concept of energy level, the internal phenomenon of the indirect chemical energy release is disclosed, and the equations of energy level describing the utilization of chemical energy and thermal energy during the indirect chemical energy release process are obtained. From theoretical analysis, we find that the superiority of the indirect chemical energy release of fuel comes from the cascade utilization of the fuel's chemical energy. Moreover, the cascade utilization of chemical energy is verified by the investigation of CRGT (chemically recuperated gas turbine). As a result, the thermal exergy obtained from the chemical energy release of fuel increases by 2.% -{12.% . The results obtained here may help a deeper understanding of indirect chemical energy release of fuel and provide a theoretical basis for the synthesis of innovative energy systems.

关键词： chemically recuperated gas turbine methane/steam reforming chemical energy level cascade utilization.

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Possible energy Network with polygeneration system and CCS for China

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中国科学：技术科学英文版 2010年第1期53卷 33-39页

作者： GAO Lin1,LI Sheng1,2.JIN HongGuang1 & LIN Hu1 1 institute of Engineering Thermophysics,{2. {3. of Sciences,beijing 100190,China 2.Graduate School of {2. {3. of Sciences,beijing 10003.,China institute of Engineering Thermophysics Chinese Academy of Sciences Beijing China Graduate School of chinese academy of Sciences Beijing China

On basis of adopting polygeneration systems for power and alternative fuels,capturing CO2.with near zero energy penalties,and storing CO2.on sites,a new kind of energy Network can integrate energy utilization,CO2.capture,transportation and storage ***-economic analysis of this solution focusing on Inner Mongolia and the Yangtze River Delta districts had been carried with comparison to the chain method for energy utilization and CO2.*** solution can save 2..5% of energy,and reduce 3.% of total *** adoption of advanced polygeneration systems contributes 52.2. of the total saved costs,and the integration of energy utilization and CO2.sequestration in the energy Network contributes 47.8%.From the aspect of CCS,the CO2.sequestration cost in the energy Network can be as low as 12.$/t due to the lower energy penalties of capture in polygeneration systems and the combination of CO2.source and *** energy Network exhibits attractive performance on energy saving,costs reduction for CCS,which may be a promising solution for sustainable development of China.

关键词： CO2 capture and storage energy Network polygeneration system

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Study on the atmospheric photochemical reaction of CF_3.radicals using ultraviolet photoelectron and photoionization mass spectrometer

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Science China Chemistry 2008年第4期51卷 316-321页

作者： YAO Li1,2. DU Lin1,2. YIN Shi1,2.& GE MaoFa1 1 beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, institute of Chemistry, {2. {3. of Sciences, beijing 100080, China 2.Graduate University of {2. {3. of Sciences, beijing 100080, China beijing National Laboratory for Molecular Sciences (BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing China Graduate University of chinese academy of Sciences Beijing China

A study of the atmospheric photochemical reaction of CF3.radical with CO and O2.was performed by using a homemade ultraviolet photoelectron spectrometer-photoionization mass spectrometer (PES- PIMS). The electronic structures and mechanism of ionization and dissociation of CF3.C(O)OOC(O)- OCF3.were investigated. It was indicated that the two bands on the photoelectron spectrum of CF3.C(O)OOC(O)OCF3.are the result of ionization of an electron from a lone pair of oxygen and a fluo- rine lone pair of CF3.group. The outermost electrons reside in the oxygen lone pair. The experimental and theoretical first vertical ionization energy is 13.2. and 13.178 eV, respectively, with the PES and OVGF method. They are in good agreement. The photo ionization and dissociation processes were discussed with the help of theoretical calculations and PES-PIMS experiment. After ionization, the parent ions prefer the dissociation of the C-O bond and giving the fragments CF3.CO+ and CF3.. It demonstrated that the ultraviolet photoelectron and photoionization mass spectrometer could be ap- plied widely in the study of atmospheric photochemical reaction.

关键词： photochemical reaction CF3 radical ultraviolet photoelectron and photoionization mass spectroscopy transient species

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Ratio of Real to Imaginary for pp and p Elastic Scatterings in QCD Inspired Model

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Communications in Theoretical physics 2007年第3期 550-554页

作者： LU Juan~(1,2. MA Wei-Xing~(1,3. HE Xiao-Rong~2. Collaboration Group of Hadron physics and Non-perturbative QCD Study,Guangxi University of Technology,Liuzhou545006,China2.{2. of physics Science and Engineering Technology,Guangxi University,Nanning 53.004,China3.{2. of high energy physics,the chinese academy of Sciences,{12.,China Collaboration Group of Hadron physics and Non-perturbative QCD Study，Guangxi University of Technology，Liuzhou 545006，China institute of physics Science and Engineering Technology，Guangxi University，Nanning 5{2.004，China Collaboration Group of Hadron physics and Non-perturbative QCD Study，Guangxi University of Technology，Liuzhou 545006，China institute of high {2. {3.，the chinese academy of Sciences，beijing 100049，China institute of physics Science and Engineering Technology，Guangxi University，Nanning 5{2.004，China

We use the QCD inspired model to analyze the ratio of the real to the imaginary for pp and p;p elasticseatterings.A calculation for the ratio of the real to the imaginary is performed in which the contributions from gluon-gluon interaction,quark-quark interaction,quark-gluon interaction,and odd eikonal profile function are *** show that the QCD inspired model gives a good fit to the LHC experimental data.

关键词： QCD inspired model eikonal profile function ratio of real to imaginary

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