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论武满彻作品中音响的“空间构型”及其“时间塑形”功能 被引量:3
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作者 许志斌 《南京艺术学院学报(音乐与表演版)》 CSSCI 2011年第2期83-95,178,共13页
武满彻作品织体的空间维度方面,即织体在某一"瞬时"或某一相对稳定的短时段内的各种构造形态异常丰富,本文对这些织体的组织形态——"空间构型"加以归纳分析,进而讨论通过织体的"空间构型"在音乐时间发... 武满彻作品织体的空间维度方面,即织体在某一"瞬时"或某一相对稳定的短时段内的各种构造形态异常丰富,本文对这些织体的组织形态——"空间构型"加以归纳分析,进而讨论通过织体的"空间构型"在音乐时间发展过程中的衔接、叠合、对比、呼应、暗示、渗透、再现等手段形成对乐曲整体的"显在结构力",以期加深对武满彻音乐之音响宏观特征的理解和认识。 展开更多
关键词 织体 音响 “空间构型” “时间塑形”
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Population structure of the blacklegged tick Ixodes scapularis revealed by SSCP data using the mitochondrial Cyt b and the nuclear ITS1 markers 被引量:1
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作者 Tonya R. MIXSON Quentin Q. FANG +3 位作者 D. Kelly McLAIN James H. OLIVER Jr 《动物学报》 SCIE CAS CSCD 北大核心 2004年第2期176-186,共11页
The population genetic structure of the blacklegged tick Ixodes scapularis was analyzed using 853 individual ticks collected from 12 sites along the eastern seaboard of the United States. PCR-based DNA single strand ... The population genetic structure of the blacklegged tick Ixodes scapularis was analyzed using 853 individual ticks collected from 12 sites along the eastern seaboard of the United States. PCR-based DNA single strand conformation polymorphism(SSCP) was used for analysis of one haploid locus, the mitochondrial cytochrome b(Cyt b), and one diploid locus, the internal transcribed spacer 1(ITS1) of nuclear ribosomal RNA. Seven haplotypes in the Cyt b locus and 13 genotypes in the ITS1 locus were identified. Population differentiation and isolation by distance were found. Distribution of haplotype and genotype frequencies across geographic regions suggests that two distinct populations exist along the Eastern Coast of the US. However, genetic variation among individuals within regions was large. This degree of variation suggests frequent gene flow between regions. Moreover, overall genetic diversity among individuals was much higher in ticks from the southern population. 展开更多
关键词 Blacklegged tick Population genetics Genetic variation Gene flow SSCP
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Urban Spatial Restructuring in Transitional Economy——Changing Land Use Pattern in Shanghai 被引量:10
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作者 XU Jiangang LIAO Banggu +2 位作者 SHEN Qing ZHANG Feng MEI Anxin 《Chinese Geographical Science》 SCIE CSCD 2007年第1期19-27,共9页
For almost three decades, China has been undergoing significant transition from a planned economy to a market economy. Fast-paced economic growth and urbanization, interacting with market-oriented reforms in land re- ... For almost three decades, China has been undergoing significant transition from a planned economy to a market economy. Fast-paced economic growth and urbanization, interacting with market-oriented reforms in land re- sources allocation, have caused profound spatial restructuring of Chinese cities. This paper examines urban expansion and land use reconfiguration in Shanghai’s central city from 1979 to 2002, with a special focus on the effect of the adoption of the land-leasing system in 1988. The empirical research, which employs GIS-based spatial analysis tech- niques to explore land use data for multiple years, indicates fundamental changes in the spatial characteristics of urban development in Shanghai after this important land policy reform. 展开更多
关键词 land use pattern land policy GIS SHANGHAI China
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Quotient space model based on algebraic structure 被引量:3
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作者 陈林书 WangJiayang +1 位作者 LiLi YangZhenghua 《High Technology Letters》 EI CAS 2016年第2期160-169,共10页
In the quotient space theory of granular computing,the universe structure is assumed to be a topology,therefore,its application is still limited.In this study,based on the quotient space model,the universe structure i... In the quotient space theory of granular computing,the universe structure is assumed to be a topology,therefore,its application is still limited.In this study,based on the quotient space model,the universe structure is assumed as an algebra instead of a topology.As to obtain the algebraic quotient operator,the granulation must be uniquely determined by a congruence relation,and all the congruence relations form a complete semi-order lattice,which is the theoretical basis of granularities ' completeness.When the given equivalence relation is not a congruence relation,it defines the concepts of upper quotient and lower quotient,and discusses some of their properties which demonstrate that falsity preserving principle and truth preserving principle are still valid.Finally,it presents the algorithms and example of upper quotient and lower quotient.The work extends the quotient space theory from structure,and provides theoretical basis for the combination of the quotient space theory and the algebra theory. 展开更多
关键词 granular computing quotient space congruence closure quotient operation up-per lower quotient
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Alignments, Topologies, Convex Geometries and Higgs Spaces 被引量:1
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作者 J. M. S. Simoes-Pereira 《Journal of Mathematics and System Science》 2014年第3期158-163,共6页
Aligned spaces generalize topological spaces and generate Higgs spaces. We give a necessary and sufficient condition for a finite aligned space to be a topological space, we prove the existence of two kinds of convex ... Aligned spaces generalize topological spaces and generate Higgs spaces. We give a necessary and sufficient condition for a finite aligned space to be a topological space, we prove the existence of two kinds of convex geometries, and we compare several concepts and results for arbitrary (that is, not necessarily finite) aligned, topological and Higgs spaces. 展开更多
关键词 Aligned space topological space convex geometry Higgs space.
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Short-term traffic flow prediction with PSR-XGBoostconsidering chaotic characteristics 被引量:2
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作者 Li Shubin Kong Xiangke +2 位作者 Li Qingtong Lin Zhaofeng Zhao Zihao 《Journal of Southeast University(English Edition)》 EI CAS 2022年第1期92-96,共5页
To improve the level of active traffic management,a short-term traffic flow prediction model is proposed by combining phase space reconstruction(PSR)and extreme gradient boosting(XGBoost)algorithms.Firstly,the traditi... To improve the level of active traffic management,a short-term traffic flow prediction model is proposed by combining phase space reconstruction(PSR)and extreme gradient boosting(XGBoost)algorithms.Firstly,the traditional data preprocessing method is improved.The new method uses hierarchical clustering to determine the traffic flow state and fills in missing and abnormal data according to different traffic flow states.Secondly,one-dimensional data are mapped into a multidimensional data matrix through PSR,and the time series complex network is used to verify the data reconstruction effect.Finally,the multidimensional data matrix is inputted into the XGBoost model to predict future traffic flow parameters.The experimental results show that the mean square error,average absolute error,and average absolute percentage error of the prediction results of the PSR-XGBoost model are 5.399%,1.632%,and 6.278%,respectively,and the required running time is 17.35 s.Compared with mathematical-statistical models and other machine learning models,the PSR-XGBoost model has clear advantages in multiple predictive indicators,proving its feasibility and superiority in short-term traffic flow prediction. 展开更多
关键词 traffic prediction phase space reconstruct complex networks model optimization
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Spatial Structure Characteristics Detecting of Landform based on Improved 3D Lacunarity Model 被引量:4
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作者 TAO Yang TANG Guo'an Josef STROBL 《Chinese Geographical Science》 SCIE CSCD 2012年第1期88-96,共9页
The spatial structure characteristics of landform are the foundation of geomorphologic classification and recognition.This paper proposed a new method on quantifying spatial structure characteristics of terrain surfac... The spatial structure characteristics of landform are the foundation of geomorphologic classification and recognition.This paper proposed a new method on quantifying spatial structure characteristics of terrain surface based on improved 3D Lacunarity model.Lacunarity curve and its numerical integration are used in this model to improve traditional classification result that different morphological types may share the close value of indexes based on global statistical analysis.Experiments at four test areas with different landform types show that improved 3D Lacunarity model can effectively distinguish different morphological types per texture analysis.Higher sensitivity in distinguishing the tiny differences of texture characteristics of terrain surface shows that the quantification method by 3D Lacu-narity model and its numerical integration presented in this paper could contribute to improving the accuracy of land-form classifications and relative studies. 展开更多
关键词 digital elevation model (DEM) 3D Lacunarity model spatial pattern terrain texture LANDFORM
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EVOLUTIONARY MODEL OF FREE ECONOMIC ZONES——Different Generations and Structural Features 被引量:10
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作者 MENGGuang-wen 《Chinese Geographical Science》 SCIE CSCD 2005年第2期103-112,共10页
Free economic zone (FEZ) has a long history and plays a more and more important role in the world economy. Most studies, however, focused on the theoretical analysis of benefit and cost as well as the economic role of... Free economic zone (FEZ) has a long history and plays a more and more important role in the world economy. Most studies, however, focused on the theoretical analysis of benefit and cost as well as the economic role of FEZ in the less developed countries and little attention has been paid to the evolution of FEZ. This paper will improve the above-mentioned studies and put forward the structural and spatial evolutionary model of FEZ by analyzing the development of objectives, preferential policy, governance structure, industrial sectors and location of FEZs based on the international economic and political development. FEZs develop towards: 1) more comprehensive and macro objectives, 2) more industry-oriented and multi-preferential policies, 3) more cross-national and combination zones with administrative areas, 4) more technology-intensive and multi-industries, 5) more flexible location and larger spatial dimensions, 6) more rapid evolution and typologies, and 7) more economic integration to the host economy. 展开更多
关键词 free economic zone structural evolutionary model spatial evolution
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Observations and Simulations of the Circulation and Mixing around the Andaman-Nicobar Submarine Ridge 被引量:2
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作者 LI Yi-Neng PENG Shi-Qiu ZENG Xue-Zhi 《Atmospheric and Oceanic Science Letters》 2012年第4期319-323,共5页
Using data collected by an Acoustic Doppler Current Profiler (ADCP) on a research cruise in April 2010 in the eastern Indian Ocean, the vertical cun'ent structures surrounding the Andaman-Nicobar Submarine Ridge (... Using data collected by an Acoustic Doppler Current Profiler (ADCP) on a research cruise in April 2010 in the eastern Indian Ocean, the vertical cun'ent structures surrounding the Andaman-Nicobar Submarine Ridge (ANSR) are analyzed to investigate the hydrographic responses to the topography in this region. The results show that the topography of ANSR can induce internal waves around the submarine ridge that have a maximum current velocity of 1 m s 1 The spatial struc- ture of the turbulent kinetic energy (TKE) and shear in this region during 2010 is investigated using the high-resolution Princeton Ocean Model (POM) forced by the satellite-based Advanced Scatterometer (ASCAT) winds including the tide, The results show that the model successfully simulates the internal waves around the ANSR. Numerical experiments further indicate that both the topography and tide play an important role in the gen- eration of the internal waves in this region. 展开更多
关键词 Andaman Sea vertical mixing internal waves bottom topography effects
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Triaxial Shape, Signature Splitting, and Shape Coexistence in ^(127,129,131)Nd
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作者 DONG Bao-Guo MA Hai-Liang YAN Yu-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第7期187-192,共6页
Signature splitting and shape coexistence at high spin in the neutron deficient nucleus ^129Nd are investigated with the configuration-dependent cranked Nilsson-Strutinsky approach. The calculated bands are compared w... Signature splitting and shape coexistence at high spin in the neutron deficient nucleus ^129Nd are investigated with the configuration-dependent cranked Nilsson-Strutinsky approach. The calculated bands are compared with the observed signature partner bands and very good agreement results at high spin are obtained. The observed deformed bands are confirmed as normal and highly deformed and their properties are explained theoretically. Terminating states in ^129Nd and other terminations are predicted. There is shape coexistence within the same configuration from lowspin states to high-spin states. Possible normal and highly deformed bands with rotation around the intermediate principal axis in several interesting configurations of ^129Nd are discussed. The experimental results for ^131Nd are simply discussed and the calculated bands are in good agreement with observed bands at high spin. TriaxiM shapes in ^127 Nd with a triaxial deformation of γ -12° are predicted and should be observed experimentally. The value of negative γ of π(h11/2)^4v(h11/2)^7 configuration increases with neutron number increasing in ^127,129,131Nd. The triaxial shape evolutions with neutron number increasing in ^127,129,131Nd and in ^126,128,130,132pr are explained by the strong driving force of specified single particle orbitals towards to triaxial shape. 展开更多
关键词 rotational structure triaxial shape signature splitting CONFIGURATION
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Modeling of Rocks with Spatial Distributed Fractures by Random Medium Theory 被引量:3
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作者 ZengXinwu ZhangGuangying WangXiuming 《Applied Geophysics》 SCIE CSCD 2004年第1期50-55,共6页
By using the spectrum expanding theory of random processes and Hudson's crack model,we developed a random medium model for rocks with spatial random distributed number density of cracks. This model could connect t... By using the spectrum expanding theory of random processes and Hudson's crack model,we developed a random medium model for rocks with spatial random distributed number density of cracks. This model could connect the micro-parameters of the cracks with the macro- mechanical properties, and can be effectively applied to model the real inhomogeneous medium. Numerical example indicates that the random distribution characters could be different for different elastic constants under the same random distribution of number density of cracks. By changing the value of the autocorrelation length pair, it is possible to model the difference of the distribution in the two coordinate directions. Numerical modeling results for seismic wave propagating in rocks with random distributed fractures using a staggered high-order finite-difference (SHOFD) are also presented. 展开更多
关键词 random medium autocorrelation function ROCK and fracture
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Site-Dependent TERS Study of a Porphyrin Molecule on Ag(100) at 7 K
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作者 Ben Yang Yun-jie Yu +5 位作者 Yu-fan Zhang Xian-biao Zhang Gong Chen Yao Zhang Yang Zhang Zhen-chao Dong 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2019年第3期287-291,I0001,共6页
Single-molecule tip-enhanced Raman spectroscopy(TERS)has emerged as an important technique for structural analysis at sub-molecular scale.Here in this work,we report a TERS study of an isolated free-base porphyrin mol... Single-molecule tip-enhanced Raman spectroscopy(TERS)has emerged as an important technique for structural analysis at sub-molecular scale.Here in this work,we report a TERS study of an isolated free-base porphyrin molecule adsorbed on the Ag(100)surface at cryogenic temperature(~7 K).Site-dependent TERS spectra reveal distinct local vibrational information for the chemical constituents within a single molecule.Moreover,distinct spatial features among different Raman peaks can be resolved from the TERS mapping images.These images are found to associate with related vibrational modes,enabling to resolve the mode associated with N-H bonds at the sub-nanometer level.This study will provide deep insights into the symmetry of adsorption configurations and local vibrational information within a single molecule. 展开更多
关键词 Tip-enhanced Raman spectroscopy Spatial mapping Adsorption configuration PORPHYRIN
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Towards structural web services discovery
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作者 陈江锋 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第3期297-301,共5页
A syntactic and structural matching mechanism for service discovery was put forward, which tries to exploit the underlying semantics of web services to enhance tbe traditional syntactic service discovery. We commit WS... A syntactic and structural matching mechanism for service discovery was put forward, which tries to exploit the underlying semantics of web services to enhance tbe traditional syntactic service discovery. We commit WSDL (Web Service Description Language) as service description language. The syntactic matching mechanism is based on the textual similarity among WSDL documents using VSM ( Vector Space Model). The structural information is extracted from WSDL document tree or the invocation sequence of a series of services which can be viewed as the problem of graph isomorphism. Then we combine the syntactic and structural similarity linearly to calculate the service similarity. Finally we provide a novel web services discovery framework named SG^* to find the exact services meeting the users' goals based on service similarity. 展开更多
关键词 web services service discovery VSM
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The rough representation and measurement of quotient structure in algebraic quotient space model 被引量:5
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作者 陈林书 Wang Jiayang 《High Technology Letters》 EI CAS 2017年第3期293-297,共5页
Granular computing is a very hot research field in recent years. In our previous work an algebraic quotient space model was proposed,where the quotient structure could not be deduced if the granulation was based on an... Granular computing is a very hot research field in recent years. In our previous work an algebraic quotient space model was proposed,where the quotient structure could not be deduced if the granulation was based on an equivalence relation. In this paper,definitions were given and formulas of the lower quotient congruence and upper quotient congruence were calculated to roughly represent the quotient structure. Then the accuracy and roughness were defined to measure the quotient structure in quantification. Finally,a numerical example was given to demonstrate that the rough representation and measuring methods are efficient and applicable. The work has greatly enriched the algebraic quotient space model and granular computing theory. 展开更多
关键词 granular computing algebraic quotient space model quotient structure upper(lower) congruence relation
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Neural network forecasting model based on phase space re-construction in water yield of mine
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作者 刘卫林 董增川 +1 位作者 陈南祥 曹连海 《Journal of Coal Science & Engineering(China)》 2007年第2期175-178,共4页
The neutral network forecasting model based on the phase space reconstruction was proposed. First, through reconstructing the phase space, the time series of single variable was done excursion and expanded into multi-... The neutral network forecasting model based on the phase space reconstruction was proposed. First, through reconstructing the phase space, the time series of single variable was done excursion and expanded into multi- dimension series which included the ergodic information and more rich information could be excavated. Then, on the basis of the embedding dimension of the time series, the structure form of neutral network was constructed, of which the node number in input layer was the embedding dimension of the time series minus 1, and the node number in output layers was 1. Finally, as an example, the model was applied for water yield of mine forecasting. The result shows that the model has good fitting accuracy and forecasting precision. 展开更多
关键词 neural network forecasting model phase space reconstruction water yield ofmine CHAOS
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Examples for Application of Gravitational Model in the Investigation of Spatial Structure
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作者 Aron Kincses Geza Toth 《Journal of Mathematics and System Science》 2013年第10期477-490,共14页
In this paper the authors wish to introduce an application of the gravitational model through two concrete examples. In their investigation the gravitational model was transformed to analyze the spatial structure of E... In this paper the authors wish to introduce an application of the gravitational model through two concrete examples. In their investigation the gravitational model was transformed to analyze the spatial structure of Europe, and the impact of accessibility in Hungary. In this analysis not only the size of gravitational forces but their direction can also be measured. Displacements were illustrated by a bi-dimensional regression, which gives a new perspective to the investigation of spatial structure. 展开更多
关键词 Gravitational model bi-dimensional regression ACCESSIBILITY spatial structure EUROPE Hungary.
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Comparison of the Spatial Design Idea between Geunjeongjeon of Seoul and Chongzheng Hall in Shenyang imperial palace
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作者 Jianfei Dong Yingzhi Gao Daping Liu 《International Journal of Technology Management》 2015年第6期87-93,共7页
The construction of the palace carries with it the importance of a country's political power. It shows the highest degree of a country's culture and represents the significant of planning artistic style.The modes of... The construction of the palace carries with it the importance of a country's political power. It shows the highest degree of a country's culture and represents the significant of planning artistic style.The modes of landscape plan of both Geunjeongjeon of Seoul Gyeongbokgung,and Chongzheng Hall in Shenyang imperial palace is characterized with the unique national culture under its own construction background. This article is to find out the feature of the spatial construction and the deepen artistic by analyzing the Plan technique structure modelling design and eyesight design for sDatial of the two palaces. 展开更多
关键词 Geunjeongjeon Chongzheng Hall Spatial Design Idea of spatial eyesight design
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Mine water discharge prediction based on least squares support vector machines 被引量:1
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作者 GUO Xlaohui MA Xiaoping 《Mining Science and Technology》 EI CAS 2010年第5期738-742,共5页
In order to realize the prediction of a chaotic time series of mine water discharge,an approach incorporating phase space reconstruction theory and statistical learning theory was studied.A differential entropy ratio ... In order to realize the prediction of a chaotic time series of mine water discharge,an approach incorporating phase space reconstruction theory and statistical learning theory was studied.A differential entropy ratio method was used to determine embedding parameters to reconstruct the phase space.We used a multi-layer adaptive best-fitting parameter search algorithm to estimate the LS-SVM optimal parameters which were adopted to construct a LS-SVM prediction model for the mine water chaotic time series.The results show that the simulation performance of a single-step prediction based on this LS-SVM model is markedly superior to that based on a RBF model.The multi-step prediction results based on LS-SVM model can reflect the development of mine water discharge and can be used for short-term forecasting of mine water discharge. 展开更多
关键词 mine water discharge LS-SVM chaotic time series phase space reconstruction PREDICTION
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Dynamic analysis and nonlinear identification of space deployable structure 被引量:1
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作者 郭宏伟 刘荣强 邓宗全 《Journal of Central South University》 SCIE EI CAS 2013年第5期1204-1213,共10页
The dynamic equivalent continuum modeling method of the mast which is based on energy equivalency principle was investigated. And three kinds of mast dynamic model were established, which were equivalent continuum mod... The dynamic equivalent continuum modeling method of the mast which is based on energy equivalency principle was investigated. And three kinds of mast dynamic model were established, which were equivalent continuum model, finite element model and simulation model, respectively. The mast frequencies and mode shapes were calculated by these models and compared with each other. The error between the equivalent continuum model and the finite element model is less than 5% when the mast length is longer. Dynamic responses of the mast with different lengths are tested, the mode frequencies and mode shapes are compared with finite element model. The mode shapes match well with each other, while the frequencies tested by experiments are lower than the results of the finite element model, which reflects the joints lower the mast stiffness. The nonlinear dynamic characteristics are presented in the dynamic responses of the mast under different excitation force levels. The joint nonlinearities in the deployable mast are identified as nonlinear hysteresis contributed by the coulomb friction which soften the mast stiffness and lower the mast frequencies. 展开更多
关键词 deployable structure finite element model equivalent continuum model NONLINEAR dynamic analysis
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Evolution Stages of Oasis Economy and Its Dependence on Natural Resources in Tarim River Basin 被引量:8
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作者 QIAO Xuning YANG Degang ZHANG Xinhuan 《Chinese Geographical Science》 SCIE CSCD 2009年第2期135-143,共9页
This paper examines spatio-temporal characteristics of an oasis economy and its relationship with water and mineral resources in the Tarim River Basin from 1965 to 2005. A spatial autocorrelation model, the center of ... This paper examines spatio-temporal characteristics of an oasis economy and its relationship with water and mineral resources in the Tarim River Basin from 1965 to 2005. A spatial autocorrelation model, the center of gravity model, and index system of the regional central city are used to probe the evolution laws of spatial structure of oasis economy. The study finds that: 1) The economic centre of gravity, whose variation track during this period follows linear rate law, was moving from headstream to middle reaches of the Tarim River. 2) Positive spatial autocorrelation which showed a waving and ascending trend of regional economy was significant and the neighbor effect of regional economic growth was strengthened continuously. 3) The regional economic centre was located in Hotan City before 1980, moved to Aksu City during the 1980s and to Korla City after 1990. We conclude that above all, during the recent four decades the evolution of the oasis economy in this region has gone through three stages: a traditional agriculture stage (before 1980), oasis agriculture and agricultural product processing stage (1980–1990) and oasis energy industry stage (after 1990). Furthermore, the dependence degree of the oasis economy on natural resources in different stages are studied by using dominance index, regression model, and grey relation method, which shows that an oasis econ- omy highly depends on water resources in the oasis agriculture and agricultural product processing stage while it de- pends more on mineral resources such as oil and natural gas during the oasis energy industry stage. 展开更多
关键词 oasis economy oasis energy industry mineral resources water resources Tarim River Basin
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