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Process Auxiliary Decision-making Based on Rough Sets and Regulation Distance Computing

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Chinese Journal of Mechanical Engineering 2009年第4期22卷 528-534页

作者： fang Hui TAN Jianrong YIN Guofu LI z.ongkai State Key Laboratory of CAD and CG Zhejiang University Hangzhou 310027 China School of Manufacturing Science and Technology Sichuan University Chengdu 610065 China

Computer aided process planning（CAPP） is an important content of computer integrated manufacturing, and intelligentiz.ng is the orientation of development of CAPP. Process planning has characters of empirical and time-consuming to finaliz., and the same technical aim always can be achieved by different process schemes, so intelligentiz.ng of process decision making always be a difficult point of CAPP and computer integrated manufacturing （CIM）. For the purpose of intelligent aided process decision making and reuse of process resource, this paper proposed a decision making method based on rough sets（RS） and regular distance computing. The main contents and methods of process planning decision making are analyz.d under agile response manufacturing environment, the concept of process knowledge granule is represented, and the methods of process knowledge granule partitioning and granularity analysis are put forward. Based on the theory of RS and combined the method of process attributes importance identification, the paper brought forward a computing model for process scheme regulation distance under the same attribute conditions, and conflict resolution strategy was introduced to acquire process scheme fit for actual situation of enterprise＇s manufacturing resources, so as to realiz. process resources＇ conflict resolution and quick excavate and reuse of enterprises＇ existing process knowledge, to advance measures of process decision making and improve the rationality and capability of agile response of process planning.

关键词： process planning decision-making rough sets knowledge granule granularity regulation distance

Vibro-acoustic Radiation Characteristics Analysis of Railway Vehicle Wheel with Damping Ridges Based on Modal Strain Energy

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Chinese Journal of Mechanical Engineering 2011年第6期24卷 1056-1067页

作者： HE Bin XIAO Xinbiao JIN Xuesong fang Jianying State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China Knorr-Bremse Systems for Rail Vehicles（Suz.ou） Co. Ltd Suzhou 215151 China

The existing researches on the damping wheel mainly focus on investigating the influence of damping structure change on the vibro-acoustic *** changes include the geometric siz. of the damping structure,the damping material parameters,and the placement,and so *** order to further understand the mechanism in reducing the acoustic radiation of railway wheel with layer damping treatment,in this paper,the wheel is simply modified by a full-siz.d circular *** circle plate side has stuck circumference constrained damping ridges and radial constrained damping ridges on *** on a hybrid finite element method-boundary element method（FEM-BEM）,the paper develops a vibro-acoustic radiation model for such a distributed constrained damping *** vibration and acoustic radiation of the circular plate is *** the analysis,the dynamic response of the system is obtained by using the 3D finite model superposition *** obtained vibration response is used as the initial boundary condition in solving Helmholtz.boundary integral equation for the sound radiation *** the procedure,firstly,the modal analysis of the circular plate is performed to get the distribution of the system modal strain ***,the vibro-acoustic radiation characteristics of the plate with different kinds of circumference damping ridges and radial damping ridges are compared in order to try to find the best effective damping ridge ***,using the distribution of the plate modal strain energy investigates the effect of the ridge distribution locations on the circular plate on its vibro-acoustic *** calculation and analysis research results show that,the sticking circumference and radial damping ridges on the plate can control the vibro-acoustic radiation of the plate effectively in different frequency *** distribution of the constrained damping ridge has an effect on reduction in vibro-acoustic radiation of the circular *** presen

关键词： wheel/rail noise vibro-acoustic radiation circumference damping ridge radial damping ridge modal strain energy

Recent progresses on designing and manufacturing of bulk refractory alloys with high performances based on controlling interfaces

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Journal of Materials Science & Technology 2020年第17期52卷 29-62页

作者： T.z.ang H.W.Deng z.M.Xie R.Liu J.F.Yang C.S.Liu X.P.Wang Q.F.fang Y.Xiong School of Physics and Electronic Engineering Guangzhou UniversityGuangZhou 510006China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China State Key Laboratory of Environment Friendly Energy Materials West South University of Sciences and TechnologyMianYang 621010China

Refractory alloys such as tungsten and molybdenum based alloys with high strength,thermal/electrical conductivity,low coefficient of thermal expansion and excellent creep resistances are highly desirable for applications in nuclear facilities,critical components in aerospace and defense ***,the serious embrittlement limits the engineering usability of some refractory alloys.A lot of research results indicate that the performances of refractory alloys are closely related to the physical/chemical status,such as the interface dimension,interface type,interface composition of their grain boundaries(GBs),phase boundaries(PBs)and other interface *** paper reviewed the recent progress of simulations and experiments on interface design strategies that achieve high performance refractory *** strategies include GB interface purifying/strengthening,PB interface strengthening and PB/GB synergistic *** details are provided on the design/fabrication strategy such as GB interface controlling,PB interface controlling and synergistic control of multi-scaled *** corresponding performances such as the mechanical property,thermal conductivity,thermal load resistance,thermal stability,irradiation resistance,and oxidation resistance are reviewed in the aspect to the effect of *** addition,the relationships between these interfaces and material properties are ***,future developments and potential new research directions for refractory alloys are proposed.

关键词： Interface controlling Designing and manufacturing Refractory alloys Structure and performance

Integrative analysis of the metabolome and transcriptome reveals seed germination mechanism in Punica granatum L.

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Journal of Integrative Agriculture 2021年第1期20卷 132-146页

作者： FU fang-fang PENG Ying-shu WANG Gui-bin Yousry A.EL-KASSABY CAO Fu-liang Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037P.R.China Department of Forest and Conservation Sciences Faculty of ForestryThe University of British ColumbiaVancouverB.C.V6T 1Z4Canada

We conducted an integrative system biology of metabolome and transcriptome profile analyses during pomegranate(Punica granatum L.) seed germination and utiliz.d a weighted gene co-expression network analysis(WGCNA) to describe the functionality and complexity of the physiological and morphogenetic processes as well as gene expression and metabolic differences during seed germination stages. In total, 489 metabolites were detected, including 40 differentially accumulated metabolites. The transcriptomic analysis showed the expression of 6 984 genes changed significantly throughout the whole germination process. Using WGCNA, we identified modules related to the various seed germination stages and hub genes. In the initial imbibition stage(stage 1), the pivotal genes involved in RNA transduction and the glycolytic pathway were most active, while in the sprouting stage(stage 4), the pivotal genes were involved in multiple metabolic pathways. In terms of secondary metabolic pathways, we found flavonoid 4-reductase genes of anthocyanin biosynthesis pathway are most significantly affected during pomegranate seed germination, while the flavonol synthase gene was mainly involved in the regulation of isoflavonoid biosynthesis.

关键词： seed germination stages weighted gene co-expression network analysis(WGCNA) metabolome transcriptome flavonoid pathway

THE EVALUATION AND ANALYSIS OF THE TOURISM RESOURCES IN JILIN PROVINCE

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Chinese Geographical Science 2002年第2期12卷 186-192页

作者： YUTao－fang GUChao－lin 等 DepartmentofUrbanandResources SciencesNanjingUniversityNanjing210093P.R.China

This paper comprehensively evaluates and analyz.s the tourism resources in Jilin Province, China. And it consists of three parts. The first two parts are on the resources evaluation and analysis. Based on the results of evaluation about the structural and spatial distribution of the tourism resources, it is found that, the natural resources play fundamental roles in Jilin, while the human and cultural resources are important complementary parts as well. In the spatial distribution analysis, the resources show the characteristic of "six clusters"and "three belts"spatial relations. Four clusters are centered on the cities, which are Changchun, Jilin, Baicheng, Tonghua and Ji′an; one cluster is around the Changbai Moutains and one cluster nears the frontier at Tumen between China, Russia and P.D. R. Korea. And the three belts are: 1) The west belt. It contains Xianghai and Momoge natural protection region. The evident of this z.ne is its ecological and ethical tourism resources. 2)The middle belt characteriz.d by urban traveling and recreation, including Jilin and Changchun, together with their nearby Nong′an and Siping. 3) The last belt is also the most important one, which is the east z.ne. It covers the Changbai Mountains, the golden triangles of Tonghua and the Tumen River. This z.ne is remarkable for its abundant natural landscapes and unique folk customs. In the last part the concept planning is briefly constructed for the tourism resources in Jilin Province according to the above evaluation and analysis.

关键词： tourism resources resources evaluation structural and spatial analysis concept planning jilin province

Tuning the Excited State of Tetradentate Pd(ll) and Pt(ll) Complexes through Benz.nnulated N-Heteroaromatic Ring and Central Metal

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Chinese Journal of Chemistry 2022年第2期40卷 223-234页

作者： Guijie Hua Guo Xiaoli fang Yun-fang Yang Yulu Sun Weiwei Lou Qisheng z.ang Yuanbin She College of Chemical Engineering Zhejiang University of TechnologyHangzhouZhejiang 310014China MOE Key Laboratory of Macromolecular Synthesis and Functionaliz.tion Department of Polymer Science and EngineeringZhejiang UniversityHangzhouZhejiang 310027China

A series of tetra de ntate Pd(ll)and Pt(ll)complexes containing fused 5/6/6 metallocycles with phe nyl/V-heteroaromatic ben-z.[d]imidaz.le(pbiz.,benz.[d]oxaz.le(pboz.or benz.[d]thiaz.le(pbthz.-containing ligands was *** studies by experiments and theoret:ical calculations reveal that both the central metal and the benz.nnulated A/-heteroaromatic ring have sig-n ificant in flue nee on the electrochemical,photophysical and excited-state properties of the Pd(ll)and Pt(ll)*** identical condition,compared to pb/z.based Pd(ll)and Pt(ll)complexes,the corresponding metal complexes with pboz.and pbthz.containing ligand show significant red-shift emission spectra.

关键词： Semiconductors Luminescence Platinum and Palladium Energy conversion OLED

Global transcriptome analysis for identification of interactions between coding and noncoding RNAs during human erythroid differentiation

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Frontiers of Medicine 2016年第3期10卷 297-310页

作者： Nan Ding Jiafei Xi Yanming Li Xiaoyan Xie Jian Shi z.aojun z.ang Yanhua Li fang fang Sihan Wang Wen Yue Xuetao Pei Xiangdong fang CAS Key Laboratory of Genome Sciences and Information Beijing Institute of Genomics Chinese Academy of Sciences Beijing 100101 China Lab of Stem Cell and Regenerative Medicine Beijing Institute of Transfusion Medicine AMMS Beijing 100850 China University of Chinese Academy of Sciences Beijing 100049 China South China Research Center for Stem Cell &Regenerative Medicine AMMS Guangzhou 510300 China

Studies on coding genes, miRNAs, and lncRNAs during erythroid development have been performed in recent years. However, analysis focusing on the integration of the three RNA types has yet to be done. In the present study, we compared the dynamics of coding genes, miRNA, and IncRNA expression profiles. To explore dynamic changes in erythropoiesis and potential mechanisms that control these changes in the transcriptome level, we took advantage of high throughput sequencing technologies to obtain transcriptome data from cord blood hematopoietic stem cells and the following four erythroid differentiation stages, as well as from mature red blood cells. Results indicated that lncRNAs were promising cell marker candidates for erythroid differentiation. Clustering analysis classified the differentially expressed genes into four subtypes that corresponded to dynamic changes during sternness maintenance, mid-differentiation, and maturation. Integrated analysis revealed that noncoding RNAs potentially participated in controlling blood cell maturation, and especially associated with heine metabolism and responses to oxygen species and DNA damage. These regulatory interactions were displayed in a comprehensive network, thereby inferring correlations between RNAs and their associated functions. These data provided a substantial resource for the study of normal erythropoiesis, which will permit further investigation and understanding of erythroid development and acquired erythroid disorders.

关键词： erythroid differentiation hematopoietic stem cell RNA-seq miRNA lncRNA

Buoyancy of convective-scale updrafts in the outer cores of sheared tropical cyclones

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Atmospheric and Oceanic Science Letters 2019年第1期12卷 58-65页

作者： LI Qingqing fang Qiaoxian Pacific Typhoon Research Center Key Laboratory of Meteorological Disaster of the Ministry of Education Nanjing University of Information Science and Technology State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences

In this paper,the authors present the statistical characteristics of the buoyancy of outer-core convective-scale updrafts in numerically simulated sheared tropical cyclones(TCs).The total buoyancy is predominantly positive in weak-to-strong ambient vertical shears,whereas much of the total buoyancy under an extreme shear environment becomes *** buoyancy positively contributes to the total buoyancy *** weakly and moderately sheared TCs,the updraft buoyancy is statistically significantly stronger downshear but smaller *** a downshear preference of strong buoyancy becomes less evident as the shear magnitude *** total buoyancy of updrafts shows a decreasing tendency with *** thermal and dynamic buoyancy do not significantly correlate with vertically averaged vertical mass *** also leads to no significant correlation between the total buoyancy and vertical mass fluxes of outer-core updrafts.

关键词： Tropical cyclone vertical wind shear outer core updraft buoyancy

A FIELD TEST DATA RESEARCH BASED ON A NEW HYDRAULIC PARAMETERS QUICK TEST TECHNOLOGY

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Journal of Hydrodynamics 2010年第4期22卷 562-571页

作者： z.AO Yan-rong z.OU z.i-fang School of Earth Sciences and Engineering Hohai University Nanjing 210098 China

The hydraulic parameter quick test system in accordance with the oscillation principle can overcome the shortcomings of traditional methods in determining hydraulic parameters which,besides having complex hydrogeological restrictions and needing complex equipment in the field,are often both time and energy consuming,and high *** on the hydrogeological conditions in the north anchorage of Taiz.ou Yangtz. River Highway Bridge,a quick hierarchical test is carried out for different depths of single-hole drilling to verify the function of the system in this ***,with a purification of the raw data gathered in the test by wavelet denoising,the hydraulic parameters are worked out by adopting the Kipp model.A comparison between the Kipp model results and stratigraphic data as well as pumping test results justifies the reliability and accuracy of the new *** study finds other advantages of the method like high efficiency in operation,flexibility in stratified test,as well as ***,the technology is of significant practical value and application prospect.

关键词： hydraulic parameters oscillation principle slug test field test wavelet denoising