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Interpretation of Jadine's Identity Cognition inTar Babyfrom thePerspective of Space Theory 预览
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作者 WANG Ruofan 《国际英语教育研究:英文版》 2019年第1期43-45,共3页
According to the contemporary Western theory of Lefebvre, the space is divided into three levels: physical space, spiritual space and social space. After going through the toss of the physical space, the exile of the ... According to the contemporary Western theory of Lefebvre, the space is divided into three levels: physical space, spiritual space and social space. After going through the toss of the physical space, the exile of the spiritual spaceas well as the dilemma of social space with the journey from Paris to Isle des Chevaliers, to New York, then to Eloe, and finally to Paris, Jadine in Tar Baby had broken the restriction of "dualism" andobtained the ethical identity and culture affiliation of ,"black&white", which will create a new path for the whole African-Americans to search for their ethnic identities and culture attributions. 展开更多
关键词 physical SPACE SPIRITUAL SPACE SOCIAL SPACE IDENTITY exploration culture affiliation
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Invariant Einstein metrics on generalized Wallach spaces
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作者 Zhiqi Chen Yurii Gennadievich Nikonorov 《中国科学:数学英文版》 SCIE CSCD 2019年第3期569-584,共16页
Invariant Einstein metrics on generalized Wallach spaces have been classified except SO(k + l+ m)/SO(k) × SO(l) × SO(m). In this paper, we first give a survey on the study of invariant Einstein metrics on ge... Invariant Einstein metrics on generalized Wallach spaces have been classified except SO(k + l+ m)/SO(k) × SO(l) × SO(m). In this paper, we first give a survey on the study of invariant Einstein metrics on generalized Wallach spaces, and prove that there are infinitely many spaces of the type SO(k + l + m)/SO(k)× SO(l) × SO(m) admitting exactly two, three, or four invariant Einstein metrics up to a homothety. 展开更多
关键词 compact HOMOGENEOUS SPACE generalized Wallach SPACE symmetric SPACE HOMOGENEOUS RIEMANNIAN METRIC EINSTEIN METRIC RICCI flow
多琳·马西城市政治学中城市地理空间的三重维度 预览
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作者 谢震 《北华大学学报:社会科学版》 2019年第1期109-114,共6页
西方著名的激进地理学家、马克思主义的城市学者多琳·马西别具一格的空间理论是其城市政治学研究的基本解释方法。马西的城市地理空间包含着三重维度:全球地理连接的空间;本土博弈的混合空间;表征身份认同的第三空间。马西的城市... 西方著名的激进地理学家、马克思主义的城市学者多琳·马西别具一格的空间理论是其城市政治学研究的基本解释方法。马西的城市地理空间包含着三重维度:全球地理连接的空间;本土博弈的混合空间;表征身份认同的第三空间。马西的城市空间学说指向了一种世界主义的政治责任,但以传统的马克思主义理论视角来看,其学说仍有值得商榷之处,尤其是其过多强调"开放性"而弱化了全球空间范围内的剥削关系。 展开更多
关键词 城市 空间 综合地理系统 混合空间 第三空间 多琳·马西
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身体空间与生活空间--梅洛-庞蒂论身体与空间
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作者 马元龙 《中国人民大学学报》 CSSCI 北大核心 2019年第1期141-152,共12页
与胡塞尔和海德格尔不同,梅洛-庞蒂的知觉现象学的基本原则是:将身体而非意识确立为知觉主体,并由此揭示身体对于对象的构成作用。作为知觉主体的身体绝非空间之中的纯粹一物,因为身体存在的空间性与一般外在事物的空间性是截然不同的... 与胡塞尔和海德格尔不同,梅洛-庞蒂的知觉现象学的基本原则是:将身体而非意识确立为知觉主体,并由此揭示身体对于对象的构成作用。作为知觉主体的身体绝非空间之中的纯粹一物,因为身体存在的空间性与一般外在事物的空间性是截然不同的。身体空间是一种处境性的空间,而非一种位置性的空间。身体空间的基本结构是内涵身体的对象-境域结构。正是基于身体存在的空间性,梅洛-庞蒂进而揭示了生活空间:没有身体就没有空间。空间之所以成为空间,乃是因为意向性的身体在存在论的意义上被啮合进了世界之中。 展开更多
关键词 身体 空间 身体空间 生活空间
空间权制度研究 预览
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作者 刘竹君 金琦 《现代盐化工》 2019年第3期187-188,共2页
随着现代社会各项事业的发展和进步,我们对所处空间的需要越来越大。在我国《物权法》关于用益物权的法律规定中,空间是可以作为建设用地使用权的客体而存在的。但是,对于空间能否独立作为权利客体的理论,学界有着不同的观点和看法。研... 随着现代社会各项事业的发展和进步,我们对所处空间的需要越来越大。在我国《物权法》关于用益物权的法律规定中,空间是可以作为建设用地使用权的客体而存在的。但是,对于空间能否独立作为权利客体的理论,学界有着不同的观点和看法。研究了空间权的一些基本问题,认为空间权应作为一种独立的用益物权,并提出发展建议。 展开更多
关键词 空间 空间建设用地使用权 空间权
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Boundedness of Commutators of θ-Type Calderón-Zygmund Operators on Non-homogeneous Metric Measure Spaces
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作者 Chol RI Zhenqiu ZHANG 《数学年刊:B辑英文版》 SCIE CSCD 2019年第4期585-598,共14页
Let(X, d, μ) be a metric measure space satisfying both the upper doubling and the geometrically doubling conditions in the sense of Hyt?nen. In this paper, the authors obtain the boundedness of the commutators of θ-... Let(X, d, μ) be a metric measure space satisfying both the upper doubling and the geometrically doubling conditions in the sense of Hyt?nen. In this paper, the authors obtain the boundedness of the commutators of θ-type Calderón-Zygmund operators with RBMO functions from L∞(μ) into RBMO(μ) and from Hat1,∞(μ) into L1(μ), respectively.As a consequence of these results, they establish the Lp(μ) boundedness of the commutators on the non-homogeneous metric spaces. 展开更多
关键词 NON-HOMOGENEOUS SPACE θ-Type Calderón-Zygmund operator COMMUTATOR RBMO(μ) SPACE Hat1 ∞(μ) SPACE
Bloch-type spaces and extended Cesàro operators in the unit ball of a complex Banach space
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作者 Hidetaka Hamada 《中国科学:数学英文版》 SCIE CSCD 2019年第4期617-628,共12页
Let B be the unit ball of a complex Banach space X. In this paper, we generalize the Bloch-type spaces and the little Bloch-type spaces to the open unit ball B by using the radial derivative. Next, we define an extend... Let B be the unit ball of a complex Banach space X. In this paper, we generalize the Bloch-type spaces and the little Bloch-type spaces to the open unit ball B by using the radial derivative. Next, we define an extended Cesaro operator Tφ with the holomorphic symbol φ and characterize those φ for which Tφ is bounded between the Bloch-type spaces and the little Bloch-type spaces. We also characterize those φ for which Tφ is compact between the Bloch-type spaces and the little Bloch-type spaces under some additional assumption on the symbol φ. When B is the open unit ball of a finite dimensional complex Banach space X, this additional assumption is automatically satisfied. 展开更多
关键词 Bloch-type SPACE COMPLEX Banach SPACE EXTENDED CESARO operator little Bloch-type SPACE
New characterizations of Musielak-Orlicz-Sobolev spaces via sharp ball averaging functions
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作者 Sibei YANG Dachun YANG Wen YUAN 《中国数学前沿:英文版》 SCIE CSCD 2019年第1期177-201,共25页
We establish a new characterization of the Musielak-Orlicz-Sobolev space on ?n, which includes the classical Orlicz-Sobolev space, the weighted Sobolev space, and the variable exponent Sobolev space as special cases, ... We establish a new characterization of the Musielak-Orlicz-Sobolev space on ?n, which includes the classical Orlicz-Sobolev space, the weighted Sobolev space, and the variable exponent Sobolev space as special cases, in terms of sharp ball averaging functions. Even in a special case, namely, the variable exponent Sobolev space, the obtained result in this article improves the corresponding result obtained by P. H?st? and A. M. Ribeiro [Commun. Contemp. Math., 2017, 19: 1650022] via weakening the assumption f ∈ L^1(R^n) into f ∈ L^1loc(R^n), which was conjectured to be true by Hosto and Ribeiro in the aforementioned same article. 展开更多
关键词 Musielak-Orlicz-Sobolev SPACE Orlicz-Sobolev SPACE variable EXPONENT Sobolev SPACE SHARP BALL AVERAGING function
Delimitation and Zoning of Natural Ecological Spatial Boundary Based on GIS 预览
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作者 Yonghao WANG Hengji LI Jun REN 《亚洲农业研究:英文版》 2019年第5期40-45,共6页
In order to improve the control of land use in China,taking Sunan Yugur Autonomous County in the Qilian Mountains area as an example,this paper explores the method of national ecological space delimitation and zoning ... In order to improve the control of land use in China,taking Sunan Yugur Autonomous County in the Qilian Mountains area as an example,this paper explores the method of national ecological space delimitation and zoning based on ARCGIS platform. Three kinds of space division techniques are formed to unify natural resources survey data,carry out land spatial suitability evaluation,delimit three kinds of space and optimize natural ecological space division. According to existing laws in China,based on ecological protection red line,natural ecological space is divided into ecological protection red line and general ecological space. According to the regulation requirements and the functional division of various protected areas,the red line area of ecological protection is divided into core protected area,ecological restoration area,traditional utilization and recreation area with the area of 3 947. 28,3 216. 89 and 6 936. 56 km2,respectively. In view of the prominent problems in the process of delimitation and zoning of natural ecological space,some suggestions are put forward,such as unification of chassis,optimization of ecological protection red line and coordination and unification of management boundary. 展开更多
关键词 TERRITORIAL SPACE NATURAL ECOLOGICAL SPACE ECOLOGICAL protection red line General ECOLOGICAL SPACE
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Stability Characterizations of ε-isometries on Certain Banach Spaces
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作者 Li Xin CHENG Long Fa SUN 《数学学报:英文版》 SCIE CSCD 2019年第1期123-134,共12页
Suppose that X, Y are two real Banach Spaces. We know that for a standard ε-isometry f : X → Y, the weak stability formula holds and by applying the formula we can induce a closed subspace N of *. In this paper, by ... Suppose that X, Y are two real Banach Spaces. We know that for a standard ε-isometry f : X → Y, the weak stability formula holds and by applying the formula we can induce a closed subspace N of *. In this paper, by using again the weak stability formula, we further show a sufficient and necessary condition for a standard ε-isometry to be stable in assuming that N is w*-closed in Y*.Making use of this result, we improve several known results including Figiel’s theorem in reflexive spaces.We also prove that if, in addition, the space Y is quasi-reflexive and hereditarily indecomposable, then L(f)≡span[f(X)] contains a complemented linear isometric copy of X;Moreover, if X =Y, then for every e-isometry f: X → X, there exists a surjective linear isometry S:X → X such that f-S is uniformly bounded by 2ε on X. 展开更多
关键词 ε-isometry STABILITY hereditarily INDECOMPOSABLE SPACE quasi-reflexive SPACE Banach SPACE
性别空间的重构及其共同体想象 预览
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作者 王华伟 《延安大学学报:社会科学版》 2019年第4期84-88,101共6页
性别空间是叙事的重要背景与推动力,只是人类看待性别空间的习惯造成其在场性的缺席。空间和性别之间多维而复杂的叙事关系在文学作品中多有体现,从某种程度上讲,维多利亚小说所呈现的空间具有非常明显的性别化倾向。通过空间定义性别,... 性别空间是叙事的重要背景与推动力,只是人类看待性别空间的习惯造成其在场性的缺席。空间和性别之间多维而复杂的叙事关系在文学作品中多有体现,从某种程度上讲,维多利亚小说所呈现的空间具有非常明显的性别化倾向。通过空间定义性别,依靠性别体验空间,呈现出明显的性别地理学观点,蕴含着清晰的共同体观念。维多利亚时代的男性和女性均受制于这样的空间差异与重构,这些空间经历很大程度上凸显出西方社会中真实的性别共同体想象,以及它带给男人和女人的全新空间体验,造成非此即彼的性别空间格局,在未来人类命运共同体的营构中遇到更大的挑战甚至解构。 展开更多
关键词 空间 性别空间 共同体 维多利亚时代
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VECTORIAL EKELAND VARIATIONAL PRINCIPLE AND CYCLICALLY ANTIMONOTONE EQUILIBRIUM PROBLEMS 预览
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作者 丘京辉 《数学物理学报:B辑英文版》 SCIE CSCD 2019年第2期524-544,共21页
In this article, we extend the cyclic antimonotonicity from scalar bifunctions to vector bifunctions. We find out a cyclically antimonotone vector bifunction can be regarded as a family of cyclically antimonotone scal... In this article, we extend the cyclic antimonotonicity from scalar bifunctions to vector bifunctions. We find out a cyclically antimonotone vector bifunction can be regarded as a family of cyclically antimonotone scalar bifunctions. Using a pre-order principle(see Qiu, 2014), we prove a new version of Ekeland variational principle(briefly, denoted by EVP), which is quite different from the previous ones, for the objective function consists of a family of scalar functions. From the new version, we deduce several vectorial EVPs for cyclically antimonotone equilibrium problems, which extend and improve the previous results. By developing the original method proposed by Castellani and Giuli, we deduce a number of existence results(no matter scalar-valued case,or vector-valued case), when the feasible set is a sequentially compact topological space or a countably compact topological space. Finally, we propose a general coercivity condition. Combining the general coercivity condition and the obtained existence results with compactness conditions, we obtain several existence results for equilibrium problems in noncompact settings. 展开更多
关键词 EQUILIBRIUM problem: cyclic antimonotonicity vectorial EKELAND VARIATIONAL principle sequentially COMPACT TOPOLOGICAL SPACE countably COMPACT TOPOLOGICAL SPACE
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Spatial-temporal Distribution Characteristics of Global Seismic Clusters and Associated Spatial Factors 预览
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作者 YANG Jing CHENG Changxiu +3 位作者 SONG Changqing SHEN Shi ZHANG Ting NING Lixin 《中国地理科学:英文版》 SCIE CSCD 2019年第4期614-625,共12页
Earthquakes exhibit clear clustering on the earth. It is important to explore the spatial-temporal characteristics of seismicity clusters and their spatial heterogeneity. We analyze effects of plate space, tectonic st... Earthquakes exhibit clear clustering on the earth. It is important to explore the spatial-temporal characteristics of seismicity clusters and their spatial heterogeneity. We analyze effects of plate space, tectonic style, and their interaction on characteristic of cluster.Based on data of earthquakes not less than moment magnitude(M_w) 5.6 from 1960 to 2014, this study used the spatial-temporal scan method to identify earthquake clusters. The results indicate that seismic spatial-temporal clusters can be classified into two types based on duration: persistent clusters and burst clusters. Finally, we analysed the spatial heterogeneity of the two types. The main conclusions are as follows: 1) Ninety percent of the persistent clusters last for 22-38 yr and show a high clustering likelihood;ninety percent of the burst clusters last for 1-1.78 yr and show a high relative risk. 2) The persistent clusters are mainly distributed in interplate zones, especially along the western margin of the Pacific Ocean. The burst clusters are distributed in both intraplate and interplate zones, slightly concentrated in the India-Eurasia interaction zone. 3) For the persistent type, plate interaction plays an important role in the distribution of the clusters’ likelihood and relative risk. In addition, the tectonic style further enhances the spatial heterogeneity. 4) For the burst type,neither plate activity nor tectonic style has an obvious effect on the distribution of the clusters’ likelihood and relative risk. Nevertheless,interaction between these two spatial factors enhances the spatial heterogeneity, especially in terms of relative risk. 展开更多
关键词 GLOBAL earthquake spatial-temporal cluster duration SPATIAL HETEROGENEITY plate SPACE tectonic style INTERSECTION SPACE
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Space weather 预览
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作者 Engeli Haupt 《新世纪智能》 2019年第10期35-37,共3页
Very hot and very cold Have you ever wondered how cold it is in space? Well, apparently the vacuum of space has no temperature. But, put an object in space and it is going to experience some extreme temperatures:if le... Very hot and very cold Have you ever wondered how cold it is in space? Well, apparently the vacuum of space has no temperature. But, put an object in space and it is going to experience some extreme temperatures:if left in the sunlight an object can heat up to 260°Celsius, roughly 200 degrees hotter than the hottest place on Earth. In the shade temperatures can drop to-100℃. This is much colder than the coldest places on our planet:Antarctica has an average temperature of-55℃with a record low of-89.2℃. If you want to visit Pluto, don’t forget to pack your space jacket, because it can get as cold as-260°Celsius! 展开更多
关键词 Very HOT IS in SPACE PACK YOUR SPACE JACKET
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Boundedness and continuity of Marcinkiewicz integrals associated to homogeneous mappings on Triebel-Lizorkin spaces
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作者 Feng LIU Zunwei FU Seong Tae JHANG 《中国数学前沿:英文版》 SCIE CSCD 2019年第1期95-122,共28页
We establish the boundedness and continuity of parametric Marcinkiewicz integrals associated to homogeneous compound mappings on Triebel-Lizorkin spaces and Besov spaces. Here the integral kernels are provided with so... We establish the boundedness and continuity of parametric Marcinkiewicz integrals associated to homogeneous compound mappings on Triebel-Lizorkin spaces and Besov spaces. Here the integral kernels are provided with some rather weak size conditions on the unit sphere and in the radial direction. Some known results are naturally improved and extended to the rough case. 展开更多
关键词 Parametric MARCINKIEWICZ integral HOMOGENEOUS mapping Triebel- Lizorkin SPACE BESOV SPACE
New Calderón reproducing formulae with exponential decay on spaces of homogeneous type
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作者 Ziyi He Liguang Liu +1 位作者 Dachun Yang Wen Yuan 《中国科学:数学英文版》 SCIE CSCD 2019年第2期283-350,共68页
Assume that(X,d,μ) is a space of homogeneous type in the sense of Coifman and Weiss(1971,1977). In this article, motivated by the breakthrough work of Auscher and Hyt(o|¨)nen(2013) on orthonormal bases of regula... Assume that(X,d,μ) is a space of homogeneous type in the sense of Coifman and Weiss(1971,1977). In this article, motivated by the breakthrough work of Auscher and Hyt(o|¨)nen(2013) on orthonormal bases of regular wavelets on spaces of homogeneous type, we introduce a new kind of approximations of the identity with exponential decay(for short, exp-ATI). Via such an exp-ATI, motivated by another creative idea of Han et al.(2018) to merge the aforementioned orthonormal bases of regular wavelets into the frame of the existed distributional theory on spaces of homogeneous type, we establish the homogeneous continuous/discrete Calderón reproducing formulae on(X, d,μ), as well as their inhomogeneous counterparts. The novelty of this article exists in that d is only assumed to be a quasi-metric and the underlying measure μ a doubling measure,not necessary to satisfy the reverse doubling condition. It is well known that Calderón reproducing formulae are the cornerstone to develop analysis and, especially, harmonic analysis on spaces of homogeneous type. 展开更多
关键词 SPACE of HOMOGENEOUS type Calderón reproducing formula APPROXIMATION of the IDENTITY wavelet SPACE of test functions distribution
Complexity estimation of image sequence forautomatic target track 预览
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作者 WANG Xiaotian ZHANG Kai YAN Jie 《系统工程与电子技术:英文版》 SCIE EI CSCD 2019年第4期672-683,共12页
In the field of automatic target recognition and tracking,traditional image complexity metrics,such as statistical variance and signal-to-noise ratio,all focus on single-frame images.However,there are few researches a... In the field of automatic target recognition and tracking,traditional image complexity metrics,such as statistical variance and signal-to-noise ratio,all focus on single-frame images.However,there are few researches about the complexity of image sequence.To solve this problem,a criterion of evaluating image sequence complexity is proposed.Firstly,to characterize this criterion quantitatively,two metrics for measuring the complexity of image sequence,namely feature space similarity degree of global background(FSSDGB)and feature space occultation degree of local background(FSODLB)are developed.Here,FSSDGB reflects the ability of global background to introduce false alarms based on feature space,and FSODLB represents the difference between target and local background based on feature space.Secondly,the feature space is optimized by the grey relational method and relevant features are removed so that FSSDGB and FSODLB are more reasonable to establish complexity of single-frame images.Finally,the image sequence complexity is not a linear sum of the single-frame image complexity.Target tracking errors often occur in high-complexity images and the tracking effect of low-complexity images is very well.The nonlinear transformation based on median(NTM)is proposed to construct complexity of image sequence.The experimental results show that the proposed metric is more valid than other metrics,such as sequence correlation(SC)and interframe change degree(IFCD),and it is highly relevant to the actual performance of automatic target tracking algorithms. 展开更多
关键词 complexity of image sequence feature space similarity degree of global background(FSSDGB) feature space occultation degree of local background(FSODLB) grey relational method nonlinear transformation based on median(NTM)
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An Adaptive Transmission Scheme for Deep Space Communication 预览
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作者 SUN Zezhou WANG Le +4 位作者 WANG Chenghua ZHU Qiuming ZHANG Xiaofei LIU Weiqiang LI Xiangyu 《南京航空航天大学学报:英文版》 EI CSCD 2019年第1期26-35,共10页
Deep space communication is quite different from conventional ground communication due to its time-varying,complexity and large signal delay,which consequently affects communication quality and system efficiency. Adju... Deep space communication is quite different from conventional ground communication due to its time-varying,complexity and large signal delay,which consequently affects communication quality and system efficiency. Adjusting the transmission parameters when the channel environment changes during the communication can guarantee the performance index of the system,and therefore improve communication efficiency. An adaptive transmission scheme of transceiver based on Consultative Committee for Space Data Systems(CCSDS)protocols is proposed in this paper. According to the variation of the deep space channel,the symbol rate of transmission data is adjusted dynamically by estimating the signal- to- noise ratio (SNR) of the receiver in real time and adjusting the channel environment. This scheme can improve the channel utilization and system throughput under the premise of limiting the system bit error rate. Furthermore,this scheme is successfully implemented in Xilinx Virtex?5 FPGA board. 展开更多
关键词 deep SPACE communication ADAPTIVE SIGNAL-TO-NOISE ratio(SNR) estimate Consultative COMMITTEE for SPACE Data Systems (CCSDS)
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Strong Laws of Large Numbers for Double Sums of Banach Space Valued Random Elements
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作者 Robert PARKER Andrew ROSALSKY 《数学学报:英文版》 SCIE CSCD 2019年第5期583-596,共14页
For a double array {Vm,n, m≥1,n≥1} of independent, mean 0 random elements in a real separable Rademacher type p (1≤p≤ 2) Banach space and an increasing double array {bm,n, m≥1,n ≥ 1} of positive constants, the l... For a double array {Vm,n, m≥1,n≥1} of independent, mean 0 random elements in a real separable Rademacher type p (1≤p≤ 2) Banach space and an increasing double array {bm,n, m≥1,n ≥ 1} of positive constants, the limit law max1≤k≤m,1≤l≤n||Σi/^k=1Σj/^l=1Vi,j||/bm,n → 0 a.c. and in Lp as m ∨n →∞ is shown to hold if Σm/^∞=1Σn/^∞=1E||Vm,n||^p/bm,n/^p<∞. This strong law of large numbers provides a complete characterization of Rademacher type p Banach spaces. Results of this form are also established when 0<p≤1 where no independence or mean 0 conditions are placed on the random elements and without any geometric conditions placed on the underlying Banach space. 展开更多
关键词 Real separable BANACH SPACE DOUBLE array of independent random elements strong law of large numbers almost sure CONVERGENCE Rademacher type p BANACH SPACE CONVERGENCE in Lp
The Answer to a Problem Posed by Zhao and Ho
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作者 Bin ZHAO Jing LU Kai Yun WANG 《数学学报:英文版》 SCIE CSCD 2019年第3期438-444,共7页
Zhao and Ho asked in a recent paper that for each T0 space X, whether KB(X)(the set of all irreducible closed sets of X whose suprema exist) is the canonical k-bounded sobrification of X in the sense of Keimel and Law... Zhao and Ho asked in a recent paper that for each T0 space X, whether KB(X)(the set of all irreducible closed sets of X whose suprema exist) is the canonical k-bounded sobrification of X in the sense of Keimel and Lawson. In this paper, we construct a counterexample to give a negative answer. We also consider the subcategory Topκ of the category Top0 of T0 spaces, and prove that the category KBSob of k-bounded sober spaces is a full reflective subcategory of the category Topκ. 展开更多
关键词 To SPACE irreducibly-derived TOPOLOGY k-bounded sober SPACE
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