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Journal of Iron and Steel Research International 2017年第8期24卷 795-802页

作者： Yong Li lei fang School of Electrical Engineering Shenyang University of TechnologyShenyang 110873LiaoningChina School of Information Science and Engineering Shenyang University of TechnologyShenyang 110873LiaoningChina

According to the actual requirements,profile and rolling energy consumption are selected as objective functions of rolling schedule optimization for tandem cold *** of mechanical wear,roll diameter has some uncertainty during the rolling process,ignoring which will cause poor robustness of rolling *** order to solve this problem,a robust multi-objective optimization model of rolling schedule for tandem cold rolling was established.A differential evolution algorithm based on the evolutionary direction was *** algorithm calculated the horizontal angle of the vector,which was used to choose mutation *** chosen vector contained converging direction and it changed the random mutation operation in differential evolution *** of the proposed algorithm was verified by two ***,in order to ensure that delivery thicknesses have descending order like actual rolling schedule during evolution,a modified Latin Hypercube Sampling process was ***,the proposed algorithm was applied to the model *** showed that profile was improved and rolling energy consumption was reduced compared with the actual rolling ***,robustness of solutions was ensured.

关键词： Robust multi-objective optimization Rolling schedule Evolutionary direction Horizontal angle Mutation vector

Study on Force Mechanism for Therapeutic Effect of Pushing Manipulation with One-Finger Meditation Base on Similarity Analysis of Force and Waveform

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Chinese Journal of Integrative Medicine 2018年第7期24卷 531-536页

作者： fang lei fang Min GUO Min-min School of Rehabilitation Science Shanghai University of Traditional Chinese Medicine Department of Tuina Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Department of Mechanics and Engineer Science Fudan University

Objective： To reveal the force mechanism for therapeutic effect of pushing manipulation with one-finger meditation. Methods： A total of 15 participants were recruited in this study and assigned to an expert group, a skilled group and a novice group, with 5 participants in each group. Mechanical signals were collected from a biomechanical testing platform, and these data were further observed via similarity analysis and cluster analysis. Results： Comparing the force waveforms of manipulation revealed that the manipulation forces were similar between the expert group and the skilled group（P〉0.05）. The mean value of vertical force was 9.8 N, and 95% CI rang from 6.37 to 14.70 N, but there were significant differences compared with the novice group（P〈0.05）. The result of overall similarity coefficient cluster analysis showed that two kinds of manipulation forces curves were existed between the expert group and the skilled group. Conclusion： Pushing manipulation with one-finger meditation is a kind of light stimulation manipulation on the acupoint, and force characteristics of double waveforms continuously alternated during manual operation.

关键词： pushing manipulation with one-finger meditation Tuina biomechanics force characteristics waveform

Calculation of Entanglement Entropy for Continuous-Variable Entangled State Based on General Two-Mode Boson Exponential Quadratic Operator in Fock Space

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Communications in Theoretical Physics 2008年第3期49卷 590-594页

作者： DAI fang-Wen MA lei Department of Physics East China Normal University Shanghai 200062 China

We obtain an explicit formula to calculate the entanglement entropy of bipartite entangled state of general two-mode boson exponential quadratic operator with continuous variables in Fock space. The simplicity and gen... 详细信息

关键词： entanglement entropy continuous-variable entangled states linear quantum transformation

Asymmetric evolution and domestication in allotetraploid cotton (Gossypium hirsutum L.)

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The Crop Journal 2017年第2期5卷 159-165页

作者： lei fang Xueying Guan Tianzhen Zhang State Key Laboratory of Crop Genetics and Germplasm Enhancement Cotton Hybrid R&D Engineering Center (the Ministry of Education)Nanjing Agricultural University Nanjing 210095 China

Polyploidy plays a major role in genome evolution,which corresponds to environmental changes over millions of *** mechanisms of genome evolution,particularly during the process of domestication,are of broad interest in the fields of plant science and crop *** cotton is derived from the hybridization and polyploidization of its ancient A and D diploid *** a result,cotton is a model for polyploid genome evolution and crop *** explore the genomic mysteries of allopolyploid cotton,we investigated asymmetric evolution and domestication in the A and D ***,more structural rearrangements have been characterized in the A subgenome than in the D ***,more transposable elements,a greater number of lost and disrupted genes,and faster evolution have been identified in the A *** contrast,the centromeric retroelement(RT-domain related) sequence of tetraploid cotton derived from the D subgenome progenitor was found to have invaded the A subgenome centromeres after allotetrapolyploid *** there is no genome-wide expression bias between the subgenomes,as with expression-level alterations,gene expression bias of homoeologous gene pairs is widespread and varies from tissue to ***,there are more positively selected genes for fiber yield and quality in the A subgenome and more for stress tolerance in the D subgenome,indicating asymmetric *** review highlights the asymmetric subgenomic evolution and domestication of allotetraploid cotton,providing valuable genomic resources for cotton research and enhancing our understanding of the basis of many other allopolyploids.

关键词： Polyploidy Allotetraploid cotton Asymmetric evolution Asymmetric domestication

Evaluation of tourism climate comfort in the Grand Shangri-La region

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Journal of Mountain Science 2019年第6期16卷 1452-1469页

作者： CHENG Qing-ping ZHONG fang-lei Northwest Institute of Eco-Environmental and Resources Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China School of Economics Lanzhou UniversityLanzhou 730000China

The Grand Shangri-La(GSL) region has strong international tourist appeal. GSL has considerable international eco-tourist potential as well as being attractive for leisure, vacation, health, explorative, and scientific research activities in addition to high-end tourism experiences. These factors could promote the development of its regional tourism. GSL has been identified as a key area for tourism development in China. In this study, we investigated tourism climate conditions in GSL from 1980 to 2016 using a tourism climate index(TCI). We found that through global warming, the number of annual and monthly good-weather days, as assessed with the TCI, showed an increase over most of GSL;that trend was especially true for very good, excellent, and ideal days. The optimal travel period was May–October. We obtained the same result using cluster heat maps, in which we categorized 31 studied meteorological stations into eight types. However, heavy rainfall tended to occur during that optimal period, and it was concentrated at certain times. The annual total number of comfortable days greater than 300 was mainly located in southern GSL. We observed significant correlations between monthly and annual excellent and ideal days with latitude and elevation;in particular, we identified a significant nonlinear correlation between excellent(and ideal) days and elevation.

关键词： Grand Shangri-La region Evaluation Tourism climate comfort Cluster heat maps Temperature Precipitation

Damage Initiation and Propagation in Composites Subjected to Low-Velocity Impact:Experimental Results,3D Dynamic Damage Model,and FEM Simulations

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Transactions of Nanjing University of Aeronautics and Astronautics 2019年第3期36卷 488-499页

作者： JIA Wenbin WEN Weidong fang lei Jiangsu Province Key Laboratory of Aerospace Power System College of Energy and Power EngineeringNanjing University of Aeronautics and Astronautics

A three-dimensional dynamic damage model that fits both small and large damage sizes is developed to predict impact damage initiation and propagation for each lamina of T300-carbon/epoxy ***,13 specimens of the same lamination sequence are subjected to three different impact energies(10 J,15 J,and 20 J).After the impact,the laminates are inspected by the naked eye to observe the damage in the outer layers,and subsequently X-rayed to detect the inner ***,the stress analysis of laminates subjected to impact loading is presented,based on the Hertz contact law and virtual displacement *** on the analysis results,a three-dimensional dynamic damage model is proposed,including the Hou failure criteria and Camanho stiffness degradation model,to predict the impact damage shape and *** numerical predictions of the damage shape and area show a relatively reasonable agreement with the ***,the impact damage initiation and propagation for each lamina are investigated using this damage model,and the results improve the understanding of the impact process.

关键词： composites impact three-dimensional dynamic damage model impact damage initiation and propagation

Generation of Maximally Entangled States for Many Two-Level Atoms in a Thermal Cavity

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Communications in Theoretical Physics 2007年第3期47卷 557-560页

作者： JIANG Chun-lei fang Mao-Fa College of Physics and Information Science Hunan Normal University Changsha 410081 China

We propose a scheme for generating maximally entangled states for two or more two-level atoms in a thermal cavity. The cavity frequency is large-detuned from the atomic transition frequency, so the Hamiltonian can be expressed as an effective form. The photon-number-dependent parts in the effective Hamiltonian are cancelled with the assistance of a strong classical field, thus the scheme is insensitive to both the cavity decay and the thermal field. The scheme can be used to generate multi-atom Bell-state and Greenberger-Horne-Zeiliner （GHZ） state.

关键词： entanglement GHZ state large-detune

Tetrahydrobenzo[5]helicenediol derivatives as additives for efficient proline-catalyzed asymmetric List-Lerner-Barbas aldol reactions of bulky aldehyde substrates

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Chinese Chemical Letters 2018年第8期29卷 1223-1225页

作者： lei fang Weibin Lin Chuanfeng Chen Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Tetrahydrobenzo[5]helicenediol（THB-[5]HDIOL） derivatives as additives for the efficient prolinecatalyzed asymmetric List-Lerner-Barbas（LLB） aldol reactions of bulky aldehyde substrates was described. It was found that with dibromo-substituted helical diols P-4 a/M-4 a as additives, the prolinecatalyzed LLB aldol reaction of 9-anthraldehyde and acetone gave the product in 83% yield and 99% *** state models revealed an edge-to-face p-p stacking between the anthracenyl group in TS（R）and the phenyl group of the additive, which might result in the high enantioselectivity.

关键词： Helicenediol Asymmetric aldol reaction Additive Bulky aldehyde substrate

Predicting interfacial thermal resistance by machine learning

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npj Computational Materials 2019年第1期5卷 655-662页

作者： Yen-Ju Wu lei fang Yibin Xu Center for Materials Research by Information Integration(MI2I) Research and Services Division of Materials Data and Integrated System(MaDIS)National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki 305-0047Japan

Various factors affect the interfacial thermal resistance(ITR)between two materials,making ITR prediction a high-dimensional mathematical *** learning is a cost-effective method to address ***,we report ITR predictive models based on experimental *** physical,chemical,and material properties of ITR are categorized into three sets of descriptors,and three algorithms are used for the *** descriptors assist the models in reducing the mismatch between predicted and experimental values and reaching high predictive performance of 96%.Over 80,000 material systems composed of 293 materials were inputs for *** the top-100 high-ITR predictions by the three different algorithms,25 material systems are repeatedly predicted by at least two *** of the 25 material systems,Bi/Si achieved the ultra-low thermal conductivity in our previous *** believe that the predicted high-ITR material systems are potential candidates for thermoelectric *** study proposed a strategy for material exploration for thermal management by means of machine learning.

关键词： thermal interfacial resistance

Influence of reaction parameters on the luminescence properties of monodisperse NaGd（1-x-y）（WO4）2:xEu3+,yTb3+ phosphor by molten salt synthesis

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Journal of Rare Earths 2018年第1期36卷 49-57页

作者： Weiqin Xiao Luqiao Yin Jipeng Zhou fang lei Ying Shi Jianjun Xie lei Zhang School of Materials Science and Engineering Shanghai University Key Laboratory of Advanced Display and System Applications Ministry of Education (Shanghai University)

Eu3+activated and Eu3+, Tb3+co-activated monodisperse sodium double tungstates NaGd（WO4）2 phosphors were prepared by molten salt method at 750 ℃ for 10 h using NaCl as a flux. The crystal structure and morphology of the as-synthesized phosphors were measured by XRD and SEM, respectively. The photoluminescence properties were characterized by PL spectra, decay lifetime and CIE. The presence of NaCl plays an important role in the morphology and luminescence properties. In this work,NaCl and one of the raw material Na2CO3in a certain proportion will form a low eutectic salt to decrease the reaction temperature and benefit the formation of monodisperse NaGd（WO4）2crystals. The color of Eu3+and Tb3+co-doped NaGd（WO4）2phosphors can be tuned from creamy white to orange, red and green by adjusting the doping concentration of rare earth ions, since the emission contain the broad blue-green emission origin from NaGd（WO4）2host and characteristic red and green emission origin from Eu3+and Tb3+ions. The electroluminescent spectra and CIE measurement shows that the LED device with NaGd（1-x）（WO4）2:xEu3+（x = 0.24） phosphor can be excited by 365 nm and 380 nm LED chip, and their CIE coordinate is（x = 0.45, y = 0.45） and（x = 0.36, y = 0.37）, Ra is 80.3 and 86.3, Tcis 3196 and4556 K, respectively. As a single-component phosphor, NaGd（WO4）2:Eu3+,Tb3+have potential application in UV-pumped WLEDs.

关键词： NaGd(1-x-y)(WO4)2:xEu3+ yTb3+ Molten salt method Single component WLEDs White light