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DEVELOPMENT Of Hf MAGNETIC-fIELD STANDARD

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DEVELOPMENT OF HF MAGNETIC-FIELD STANDARD

On equivalence of state-based potential games

INTERNATIONAL SYMP ON ELECTROMAGNETIC COMPATIBILITY ( EMC 92 )

作者： YANG, SX wu, f MA, XQ GAO, QL National Institute of Metrology

ISBN: (纸本)7800031926

This paper reports on the Hf magnetic field standard of *** was completed recently using the stnadard magnetic field method and standard loop antenna method. A standard testloop antenna 100mm in diameter transmits Hf magnetic field to be received by another standard loop antenna 300mm in *** frequency range is 10kHz-30MHz,the transmitting field strength is 1 mV/m-100mV/m and the uncertainty is *** using the standard magnetic field method and the standard loop antenna method are consistent within 0.45dB. Setup using the standard loop antenna method and that using a TEM cell of 3.6m x1.8m x 1.8m coincide within 0.5dB.

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Science China(Information Sciences) 2024年第6期67卷 313-327页

作者： Han wu Jinhuan wANG Institute of Mathematics School of ScienceHebei University of Technology

In this paper, we explore state-based potential games using the semi-tensor product of ***, applying the potential equation, we derive both a necessary and sufficient condition as well as a sufficient condition to verify whether a state-based game qualifies as a potential game. Next, we present two static equivalence conditions of state-based potential games. we then delve into dynamic equivalence. we propose a criterion that allows us to identify state-based games that are dynamically equivalent to state-based potential games and share similar dynamic properties. Ultimately, we introduce the concept of state-based networked evolutionary games. we provide a necessary and sufficient condition to ensure that a state-based networked evolutionary game can be classified as a state-based potential game.

关键词： semi-tensor product of matrices state-based potential game verification equivalence state-based networked evolutionary game

Time-Independent finite Difference and Ghost Cell Method to Study Sloshing Liquid in 2D and 3D Tanks with Internal Structures

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Communications in Computational Physics 2013年第3期13卷 780-800页

作者： C.H.wu O.M.faltinsen B.f.Chen Department of Marine Environment and Engineering National Sun Yat-Sen UniversityKaohsiung 804Taiwan Certre for Ships and Ocean Structures&Department of Marine Technology NTNUTrondheim 7491Norway

A finite difference scheme with ghost cell technique is used to study viscous fluid sloshing in 2D and 3D tanks with internal *** Navier-Stokes equations in a moving coordinate system are derived and they are mapped onto a time-independent and stretched *** staggered grid is used and the revised SIMPLEC iteration algorithm is *** developed numerical model is rigorously validated by extensive comparisons with reported analytical,numerical and experimental *** present numerical results were also validated through an experiment setup with a tank excited by an inclined horizontal excitation or a tank mounted by a vertical *** method is then applied to a number of problems including sloshing fluid in a 2D tank with a bottom-mounted baffle and in a 3D tank with a vertical *** phenomena of diagonal sloshing waves affected by a vertical plate are investigated in detail in this *** effects of internal structures on the resonant frequency of a tank with liquid are discussed and the present developed numerical method can successfully analyze the sloshing phenomenon in 2D or 3D tanks with internal structures.

关键词： Liquid sloshing baffle plate time-independent finite difference ghost cell

Detecting spatio-temporal urban surface changes using identified temporary coherent scatterers

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Journal of Systems Engineering and Electronics 2021年第6期32卷 1304-1317页

作者： HU fengming wu Jicang Key Laboratory for Information Science of Electromagnetic waves Fudan UniversityShanghai 200433China College of Surveying and Geo-Informatics Tongji UniversityShanghai 200092China

Synthetic aperture radar(SAR) is able to detect surface changes in urban areas with a short revisit time, showing its capability in disaster assessment and urbanization *** presented change detection methods are conducted using couples of SAR amplitude images. However, a prior date of surface change is required to select a feasible image pair. we propose an automatic spatio-temporal change detection method by identifying the temporary coherent scatterers. Based on amplitude time series, χ^(2)-test and iterative single pixel change detection are proposed to identify all step-times: the moments of the surface change. Then the parameters, e.g., deformation velocity and relative height, are estimated and corresponding coherent periods are identified by using interferometric phase time series. with identified temporary coherent scatterers, different types of temporal surface changes can be classified using the location of the coherent periods and spatial significant changes are identified combining point density and f values. The main advantage of our method is automatically detecting spatio-temporal surface changes without prior information. Experimental results by the proposed method show that both appearing and disappearing buildings with their step-times are successfully identified and results by ascending and descending SAR images show a good agreement.

关键词： change detection temporary coherent scatterer multi-temporal interferometric synthetic aperture radar(InSAR) amplitude analysis

Angular distribution in complex oscillation theory

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Science China Mathematics 2005年第1期48卷 107-114页

作者： wu Shengjian LMAM School of Mathematical SciencesPeking UniversityBeijing 100871China

Let f1 and f2 be two linearly independent solutions of the differential equation f" + Af =0,where A is an entire *** *** this paper,we shall study the angular distribution of E and establish a relation between zero accumulation rays and Borel directions of *** we can obtain some results in the complex differential equation by using known results in angular distribution theory of meromorphic functions.

关键词： angular distribution,zero accumulation ray,Borel direction.

Cu/Pd-catalyzed borocarbonylative trifunctionalization of alkynes and allenes:synthesis ofβ-geminal-diboryl ketones

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Science China Chemistry 2021年第12期64卷 2142-2153页

作者： Yang Yuan fu-Peng wu Anke Spannenberg Xiao-feng wu Leibniz-Institut für Katalyse e.V.an der Universität Rostock Albert-Einstein-Straβe 29a18059RostockGermany Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China

functionalized bisboryl compounds have recently emerged as a new class of synthetically useful building blocks in organic ***,we report an efficient strategy to synthesizeβ-geminal-diboryl ketones enabled by a Cu/Pd-catalyzed borocarbonylative trifunctionalization of readily available alkynes and *** reaction promises to be a useful method for the synthesis of functionalizedβ-geminal-diboryl ketones with broad functional group *** studies suggest that the reaction proceeds through borocarbonylation/hydroboration cascade of both alkynes and allenes.

关键词： carbonylation copper/palladium alkynes/allenes trifunctionalization β-geminal-diboryl ketones

Antioxidant proteins TSA and PAG interact synergistically with Presenilin to modulate Notch signaling in Drosophila

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Protein & Cell 2011年第7期2卷 554-563页

作者： Michael f.wangler Lawrence T.Reiter Georgianna Zimm Jennifer Trimble-Morgan Jane wu Ethan Bier Department of Biology University of California at San DiegoSan DiegoCA 92093USA Department of Molecular and Human Genetics Baylor College of MedicineOne Baylor PlazaHoustonTX 77030USA Department of Neurology University of Tennessee Health Science CenterMemphisTN 38163USA Saddleback College 28000 Marguerite ParkwayMission ViejoCalifornia 92692USA Department of Neurology and Center for Genetic Medicine Northwestern UniversityChicagoIL 60611USA

Alzheimer’s disease(AD)pathogenesis is characterized by senile plaques in the brain and evidence of oxidative *** stress may precede plaque formation in AD;however,the link between oxidative damage and plaque formation remains *** are transmembrane proteins in which mutations lead to accelerated plaque formation and early-onset familial Alzheimer’s *** physically interact with two antioxidant enzymes thiol-specific antioxidant(TSA)and proliferation-associated gene(PAG)of the peroxiredoxin *** functional consequences of these interactions are *** the current study we expressed a presenilin transgene in Drosophila wing and sensory organ precursors of the *** caused phenotypes typical of Notch signaling loss-of-function *** found that while expression of TSA or PAG alone produced no phenotype,co-expression of TSA and PAG with presenilin led to an enhanced Notch loss-offunction *** phenotype was more severe and more penetrant than that caused by the expression of Psn *** order to determine whether these phenotypes were indeed affecting Notch signaling,this experiment was performed in a genetic background carrying an activated Notch(Abruptex)*** phenotypes were almost completely rescued by this activated Notch *** results link peroxiredoxins with the in vivo function of Presenilin,which ultimately connects two key pathogenetic mechanisms in AD,namely,antioxidant activity and plaque formation,and raises the possibility of a role for peroxiredoxin family members in Alzheimer’s pathogenesis.

关键词： Presenilin Alzheimer’s disease peroxiredoxin Notch

EffECT Of Ar PRESSURE ON STRUCTURAL AND ELECTRICAL PROPERTIES Of Cu fILMS DEPOSITED ON GLASS BY DC MAGNETRON SPUTTERING

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Acta Metallurgica Sinica(English Letters) 2002年第1期15卷 39-44页

作者： P. wu f.P. wang L.Q. Pan Y. Tian H. Qiu Department of Physics University of Science and Technology Beijing Beijing 100083China Beijing Keda-Tianyu Microelectronic Material Technology Development Co. Ltd. Beijing 100083 China

Cu films with thickness of 630-1300nm were deposited on glass substrates without heating by DC magnetron sputtering in pure Ar gas. Ar pressure was controlled to 0.5, 1.0 and 1.5Pa respectively. The target voltage was fixed at 500V but the target current increased from 200 to 1150mA with Ar pressure increasing. X-ray diffraction, scanning electron microscopy and atomic force microscopy were used to observe the structural characterization of the films. The resistivity of the films was measured using four-point probe technique. At all the Ar pressures, the Cu films have mixture crystalline orientations of [111], [200] and [220] in the direction of the film growth. The film deposited at lower pressure shows more [111] orientation while that deposited at higher pressure has more [220] orientation. The amount of larger grains in the film prepared at 0.5Pa Ar pressure is slightly less than that prepared at 1.0Pa and 1.5Pa Ar pressures. The resistivities of the films prepared at three different Ar pressures represent few differences, about 3-4 times of that of bulk material. Besides the deposition rate increases with Ar pressure because of the increase in target current. The contribution of the bombardment of energetic reflected Argon atoms to these phenomena is discussed.

关键词： Cu film DC magnetron sputtering deposition Ar pressure structure reststivity

Three principles for preparing Al wire with high strength and high electrical conductivity

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Journal of Materials Science & Technology 2019年第5期35卷 742-751页

作者： J.P.Hou R.Li Q.wang H.Y.Yu Z.J.Zhang Q.Y.Chen H.Ma X.M.wu X.w.Li Z.f.Zhang Materials fatigue and fracture Division Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China National Quality Supervision & Inspection Center of Electrical Equipment Safety Performance Zhejiang Huadian Equipment Testing Institute Hangzhou 310015 China Electric Power Research Institute of Liaoning Electric Power Co. Ltd. Liaoning Electric Power Co. Ltd. Shenyang 110006 China Department of Materials Physics and Chemistry School of Materials Science and Engineering Key Laboratory for Anisotropy and Texture of Materials Ministry of Education Northeastern University Shenyang 110819 China

The trade-off relation between the strength and the electrical conductivity has been a Iong-standing dilemma in metallic materials. In the study, three key principles, *** grains, sharp texture and nano-scale precipitates, were presented for preparing Al wire with high strength and high electrical conductivity based on the specially designed experiments for breaking the mutually exclusive relation between the strength and the electrical conductivity. The results show that the elongated grains could lead to a higher electrical conductivity in Al wire without sacrificing the strength;while, the sharp texture can efficiently strengthen the Al wire without influencing the electrical conductivity. furthermore, nano-scale precipitates with proper size can simultaneously improve the strength and electrical conductivity of Al alloy wire. Under the guidance of the above three key principles, Al wires with high strength and high conductivity were prepared.

关键词： Al wire Texture Precipitates Strength Electrical conductivity