检索结果-南通市图书馆

Special issue on modeling and control technologies for civil, energy, and power systems

在线全文

学校读者我要写书评

暂无评论

Control Theory and technology 2015年第2期13卷 89-页

作者： Tielong Shen Kang-Zhi Liu Shunshoku Sophia university Chiba university Kanae fukui university of technology

Energy and power systems technology is a fundamental field in the civil *** in power generation,grid intelligence,renewable resources,propulsion and powertrains for transportation devices,*** a long-term challenging t... 详细信息

关键词： energy Special issue on modeling and control technologies for civil and power systems

Multi-level Diffusion Kalman Filter Algorithm for Adaptive Networks 36

在线全文

学校读者我要写书评

暂无评论

Multi-level Diffusion Kalman Filter Algorithm for Adaptive N...

How have breeders adapted rice flowering to the growing region?

第36届中国控制会议

作者： Xiaorui Yang Wenxuan Han Lijuan Jia Shunshoku Kanae School of Information and Electronics Beijing Institute of Technology fukui university of technology

ISBN: (纸本)9781538629185

We study the problem of distributed state estimation over adaptive networks,where agents collaborate to estimate a common state parameter *** the sensing target area is too large or we want to improve the convergence speed of a large adaptive network,single-level diffusion algorithms do not have better performance,so we study the multi-level diffusion Kalman filter algorithm where a network running a diffusion strategy is enhanced by defining some special nodes called *** order to improve the estimation accuracy,we also study the weight-normalized diffusion Kalman filter *** results show that multi-level diffusion Kalman filter algorithm has better accuracy and convergence performance than single-level diffusion Kalman filter ***,in order to further improve the algorithm’s performance,we studied weightnormalized methods which are better than average weight methods.

关键词： distributed state estimation diffusion strategy Kalman filter adaptive networks

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第12期66卷 2736-2753页

作者： Asako Kobayashi Mao Suganami Hideki Yoshida Yoichi Morinaka Syuto Watanabe Yoshie Machida Genki Chaya Fumihiro Nakaoka Nobuhito Sato Kotaro Miura Makoto Matsuoka Rice Breeding Group Fukui Agricultural Experiment StationFukui 918-8215Japan Faculty of Food and Agricultural Sciences Institute of Fermentation SciencesFukushima UniversityFukushima 960-1296Japan Faculty of Bioscience and Biotechnology Fukui Prefectural UniversityFukui 910-1195Japan fukui Prefectural Government Fukui 910-8580Japan.

Flowering time is a crucial rice trait that influences its adaptation to various environments,cropping schedules,and agronomic *** breeders have exploited spontaneous mutations in heading date genes to regulate the flowering *** the present study,we investigated how breeders in fukui Prefecture regulated days to heading while developing promising rice ***-wide association studies(GWAS)identified Hd1,Hd16,and Hd18 as the major genes controlling days to heading in the ***,we suspected that this highly bred population might exhibit genomic stratification,which could lead to spurious or false correlations in the ***,we also conducted correlation and partial correlation analyses,which uncovered another key heading date gene,Hd17,that GWAS failed to detect because of its linkage disequilibrium with the major effect gene *** of haplotype frequencies across different breeding periods revealed that the early-heading Hd16(Hd16(E))and late-heading Hd17(Hd17(L))were increasingly co-selected in the Hd1 functional *** carrying this Hd16(E)/Hd17(L)combination exhibited days to heading in the range of 70–80,which corresponds to the peak temperature and sunshine period and is also optimal for grain quality and yield components in the fukui *** present study highlights that it is imperative to remain vigilant for Type I(false positives)and Type II(false negatives)errors when performing GWAS on highly bred populations and to implement appropriate countermeasures by accounting for gene-by-gene interactions established through the breeding *** also discuss the effectiveness of Hd16(E),which is not used outside Japan for subtle days to heading control but is widely used in Japan at certain latitudes.

关键词： breeding flowering GWAS heading date partial correlation analysis rice

CONSERVATION LAWS IN FINITE MICROCRACKING BRITTLE SOLIDS

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 2005年第3期18卷 189-199页

作者： Wang Defa Chen Yiheng fukui Takuo Department of Civil Engineering Xi＇an University of Technology Xi＇an 710048 China Department of Engineering Mechanics Xi＇an Jiaotong University Xi＇an 710049 China Department of Architecture and Civil Engineering Fukui University Fukui 910-8507 Japan

This paper addresses the conservation laws in finite brittle solids with microcracks. The discussion is limited to the 2-D cases. First, after considering the combination of the Pseudo-Traction Method and the indirect Boundary Element Method, a versatile method for solving multi-crack interacting problems in finite plane solids is proposed, by which the fracture parameters （SIF and path-independent integrals） can be calculated with a desirable accuracy. Second, with the aid of the method proposed, the roles the conservation laws play in the fracture analysis for finite microcracking solids are studied. It is concluded that the conservation laws do play important roles in not only the fracture analysis but also the analysis of damage and stability for the finite microcracking system. Finally, the physical interpretation of the M-integral is discussed further. An explicit relation between the M-integral and the crack face area, i.e., M = GS, has been discovered using the analytical method, which can shed some light on the Damage Mechanics issues from a different perspective.

关键词： conservation laws finite microcracking solids pseudo-traction method boundary element method stress intensity factors

Bias-Compensated LMS Algorithm for Sparse Systems over Adaptive Network 36

在线全文

学校读者我要写书评

暂无评论

Bias-Compensated LMS Algorithm for Sparse Systems over Adapt...

Role of Al_2O_3 fiber in eutectic Al-Si alloy composites

第36届中国控制会议

作者： Wenxuan Han Lijuan Jia Shunshoku Kanae Zijiang Yang School of Information and Electronics Beijing Institute of Technology fukui university of technology Ibaraki university

ISBN: (纸本)9781538629185

We propose bias-compensated algorithms based on the RZA-LMS algorithm and diffusion RZA-LMS *** proposed algorithms improve the accuracy of estimation under the situation that input of the adaptive filter contains *** methods of the input noise’ variance are given for implementing our single-node and diffusion biascompensated *** results show that the proposed algorithms have better accuracy than algorithms without bias-compensation and the estimation results are unbiased under different noise levels.

关键词： Bias-compensation least mean squares sparse system diffusion networks adaptive networks

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2002年第5期12卷 904-908页

作者：翟秋亚徐锦锋 Y.Iwai School of Materials Science and Engineering Xi′an University of Technology Xi′an 710048 China School of Materials Science and Engineering Xi′an University of Technology Xi′an 710048 ChinaLaboratory of Materials Science in Space Northwestern Polytechnical University Xi′an 710072 China Department of Mechanical Engineering Fukui University Fukui 910-8507 Japan

The effects of Al 2O 3 fiber on wear characteristics of eutectic Al-Si alloy composites were studied using a pin-on-disk tester under dry sliding condition. The results show that the Al 2O 3 fiber can make matrix grain be fine, specially the eutectic Si be finer and prevent the plastic flow of matrix and prohibit the crack propagation in the wear layer, thereby it can remarkably improve the mechanical property and the wear resistance of the MMCs. Since Al 2O 3 fiber plays a role of certain framework in protecting the matrix against crash, it can eliminate the severe wear of MMCs with higher φ f of fiber from the beginning of test. At mild stage, when φ f is in the range of 8%～10%, the wear rates are the lowest. With increasing φ f of Al 2O 3 fiber, the wear mechanism of MMCs can be transformed from adhesive delamination to brittle breakaway.

关键词：共晶铝硅合金氧化铝光纤复合物耐磨机械装置

First-principles calculations of the dissolution and coalescence properties of Pt nanoparticle ORR catalysts： The effect of nanoparticle shape

在线全文

学校读者我要写书评

暂无评论

Nano Research 2015年第5期8卷 1689-1697页

作者： Mary Clare Sison Escano Graduate School of Engineering University of Fukui 3-9-1 Bunkyo Fukui 910-8507 Japan

The degradation of Pt nanoparticles （NPs） in fuel cell cathodes leads to the loss of the precious metal catalyst. While the effect of NP size on Pt dissolution has been studied extensively, the influence of NP shape is largely unexplored. Because of the recent development of experimental methods to control the shape of metal NPs, rational guidelines/insights on the shape effects on NP stability are imperative. In this study, first-principles calculations based on density functional theory were conducted to determine the stability of 1-2 nm Pt NPs against Pt dissolution and coalescence with respect to NP shape. Toward dissolution, the stability of the Pt NPs increases in the following order： Hexagonal close-packed 〈 icosahedral 〈 cuboctahedral 〈 truncated octahedral. This trend is attributed to the synergy of the oxygen adsorption strength and the local coordination of the Pt atoms. With respect to coalescence, the size of a NP is related to its propensity to coalesce or detach/migrate to form larger particles. The stability of the Pt NPs was found to increase in the following order： Hexagonal close-packed 〈 truncated octahedral 〈 cuboctahedral 〈 icosahedral, and was correlated with the cohesive energies of the particles. By combining the characteristic stabilities of the shapes, new ＂metal-interfaced＂ Pt-based coreshell architectures were proposed that should be more stable than pure Pt nanoparticles with respect to both dissolution and coalescence.

关键词： Pt nanoparticle ORRcatalyst density functional theory shape dissolution coalescence stability

A PERIODICALLY LOCALIZED TRAVELING WAVE STATE OF BINARY FLUID CONVECTION WITH HORIZONTAL FLOWS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2006年第2期18卷 199-205页

作者： NING Li-zhong QI Xin HARADA Yoshifumi YAHATA Hideo Institute of Hydraulic Engineering Xi＇an University of Technology Xi＇an 710048 China Department of Applied Physics Faculty of Engineering Fukui University Bunkyo 3-9-11 Fukui 910 Japan Department of Materials Science Faculty of Science Hiroshima University Higashi-Hiroshima 739 Japan

In this paper, the convection structure in a rectangular channel with a horizontal flow was studied for the aspect ratio ГA=12 and the separation ratio ψ=-0.11. Our simulations were preformed by solving the hydrodynamic equations using the SIMPLE method. In the system of binary fluid convection with a horizontal flow, a Periodically Localized Traveling Wave （PLTW） state was found. It has similar behavior to classical Rayleigh-Benard convection in a binary fluid mixture, but the region and wave number of convection change periodically with time. The instability of PLTW depends on the Rayleigh number r and the intensity of horizontal flows Re for given ψ. Thus, the PLTW convection results from the competition between the horizontal flow and the counter-propagating wave near the onset of convection.

关键词： convection horizontal flow periodicity,localized traveling wave state

The ab initio Calculation of Electric Field Gradient at the Site of P Impurity in α-Al_(3)O_(2)

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第9期29卷 36-39页

作者： ZHANG Qiao-Li YUAN Da-Qing ZHANG Huan-Qiao FAN Ping ZUO Yi ZHENG Yong-Nan K.Masuta M.Fukuda M.Mihara T.Minamisono A.Kitagawa ZHU Sheng-Yun China Institute of Atomic Energy PO Box 275-50Beijing 102413 Department of Physics Osaka UniversityOsaka 560-0043Japan fukui university of technology Fukui 910-8505Japan National Institute of Radiological Sciences Chiba263-8555Japan

An ab initio calculation of the electric-field gradient(EFG)at the site of a phosphorous impurity substituting an Al atom in α-Al_(3)O_(2) is carried out using the WIEN2k code with the full-potential linearized augmented plane wave plus local orbital method(LAPW+lo)in the frame of density functional *** atomic lattice relaxations caused by the implanted impurities were calculated for two different charged states to well describe the electronic structure of the doped *** EFG at the site of the phosphorous impurity in the charged supercell calculated with the exchange-correlation potential of the Wu-Cohen generalized gradient approximation(WC-GGA)is 0.573×10^(21) V/m^(2).Then,the nuclear quadrupole moment of the I=3 state in ^(28)P is deduced to be 137 mb from the quadrupole interaction frequency of 190 kHz measured recently by theβ-NQR method.

关键词： theory. method. relaxation