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On the Formative Factors of Urban Narrative Space 被引量:1
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作者 Li Peng Zhang Nan 《学术界》 CSSCI 北大核心 2015年第9期275-279,共5页
With the continuous development of society,the urban space has already met the basic functional needs of the people.As the crystallization of the ideology of mankind and the social development,the urban space exerts a... With the continuous development of society,the urban space has already met the basic functional needs of the people.As the crystallization of the ideology of mankind and the social development,the urban space exerts an effect on the people on both the material level and the spiritual level.The urban space inherits the urban culture and influences people’s feelings,and the proper narrative space can meet the increasing emotional needs.This paper analyzes the three formative factors of the urban narrative space—the temporal factor,the spatial factor and the diversified event factor,showing the readers a clearer narrative space and laying foundation for the further study on narrative space theory. 展开更多
关键词 城市空间 形成因素 社会发展 功能需求 城市文化 空间因素 空间理论 空间美
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SZEG TYPE FACTORIZATION THEOREM FOR NONCOMMUTATIVE HARDY-LORENTZ SPACES 被引量:5
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作者 邵晶晶 韩亚洲 《Acta Mathematica Scientia》 SCIE CSCD 2013年第6期1675-1684,共10页
We introduce noncommutative Hardy-Lorentz spaces and give the Szegō and inner-outer type factorizations of these spaces.
关键词 subdiagonal algebras noncommutative Hardy-Lorentz spaces Szegō factor-ization outer operators
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GIS-Based Factorial Ecology and Social Public Space of the Twin City of Ramallah and Al-Bireh, West Bank, The Palestinian Authority
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作者 Sireen Al-Shawamreh Yahya Farhan 《Journal of Geographic Information System》 2018年第3期261-282,共22页
In the present research, a factorial ecological approach using factor analysis was employed to evaluate the dimensionality of the urban social structure of the twin city: Ramallah and Al-Bireh, West Bank, the Palestin... In the present research, a factorial ecological approach using factor analysis was employed to evaluate the dimensionality of the urban social structure of the twin city: Ramallah and Al-Bireh, West Bank, the Palestinian Authority. Through factor analysis, the 41 variables were reduced to four factors with an eigenvalue > 1.0. These factors explain 77.07 percent of the total variables used in the study. Factor I contributes 28.419% of the total variance proportion of input variables, labeled as “family, housing, and public spaces factor”. Factor II accounts for 19.57% of the variance proportion, designated as” housing and urban public spaces”. Factor III is strongly correlated with variables referring to the characteristics of the head of the family, and the availability of public spaces, and thus, is designated as “head of the family and public spaces”. It explains 16.68% of the total variance. Finally, factor IV explains 12.406% of variance proportion, and is strongly associated with variables pertaining to a lack of public social spaces. Consequently, factor IV is termed “lack of public spaces”. The spatial distribution of factor scores related to factors I to IV was mapped using Arc GIS in order to analyze the spatial patterns of the recognized four factors. It is worth noting the factor IV, which refers to the lack of urban social space and, urban public space, which persists in the twin city, and will continue to persist in the future. The lack of urban open space and public social spaces is closely connected to migration, emerged housing pattern, and family status dimensions focused on factors I to III, continuous confiscation of the Palestinian lands, and the construction of Israeli settlements. Currently, the twin city is extremely overcrowded with stone/concrete buildings at the expense of public space which has declined continuously over the last three decades. Nevertheless, the analyzed spatial pattern of factor scores indicated the homogeneous character of the urban society of the twin city. Based on the urban eco-logical models which seek to characterize the Western, non-Western, Israeli, and Arab-oil producing (e.g., Kuwait) urban structures, it is difficult to elaborate a specific Palestinian urban ecological model with reference to the models developed elsewhere. 展开更多
关键词 Urban Structure Public spaceS factor Analysis Family Status HOUSING Pattern TWIN CITY
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SZEG TYPE FACTORIZATION OF HAAGERUP NONCOMMUTATIVE HARDY SPACES
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作者 吐尔德别克 《Acta Mathematica Scientia》 SCIE CSCD 2017年第5期1221-1229,共9页
Let M be a σ-finite von Neumann algebra equipped with a normal faithful state φ, and let A be a maximal subdiagonal algebra of M. We proved a Szeg type factorization theorem for the Haagerup noncommutative H;-spaces.
关键词 subdiagonal algebras Haagerup noncommutative H^p-space Szeg type factorization
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Spatial-Temporal Evolution Characteristics and Driving Factors of Agricultural Space in Jianghan Plain from the Perspective of “Three-Zone Space”
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作者 Wei Wei Hao Xing 《Open Journal of Ecology》 2020年第2期62-76,共15页
Studying the agricultural spatial distribution characteristics of Jianghan Plain from 2000 to 2018 and its spatial-temporal transformation with ecological space and urban space is of great significance for optimizing ... Studying the agricultural spatial distribution characteristics of Jianghan Plain from 2000 to 2018 and its spatial-temporal transformation with ecological space and urban space is of great significance for optimizing the spatial structure of the country, enhancing the supply capacity of agricultural products, and ensuring food security. The research results show that during the period from 2000 to 2018, the agricultural spatial concentration in the area along the “Xiaogan-Jingzhou” link was relatively high, and the areas with large declines were mainly distributed in the flat areas between the Yangtze River and Han River;the space is continuously reduced by the occupation of ecological space and urban space, and ecological space and urban space have been improved respectively;agricultural space has been transformed into ecological space, and the largest urban space has been transformed. Ecological space has been transformed into agricultural space and urban space. Less urban space has been transformed into agricultural space and ecological space. 展开更多
关键词 Three-Zone space Jianghan PLAIN Agricultural space SPATIOTEMPORAL Evolution Driving factors
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Factorization of Operators in Krein Spaces and Linear-Fractional Relations of Operator Balls
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作者 Victor Anatoly Khatskevich Valery Anatoly Senderov 《Advances in Pure Mathematics》 2013年第1期29-33,共5页
We consider plus-operators in Krein spaces and generated operator linear fractional relations of the following form: . We study some special type of factorization for plus-operators T, among them the following one: T ... We consider plus-operators in Krein spaces and generated operator linear fractional relations of the following form: . We study some special type of factorization for plus-operators T, among them the following one: T = BU, where B is a lower triangular plus-operator, U is a J-unitary operator. We apply the above factorization to the study of basical properties of relations (1), in particular, convexity and compactness of their images with respect to the weak operator topology. Obtained results we apply to the known Koenigs embedding problem, the Krein-Phillips problem of existing of invariant semidefinite subspaces for some families of plus-operators and to some other fields. 展开更多
关键词 Krein space LINEAR FRACTIONAL Relation Plus-Operator factorIZATION
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2007-2016年国内图书馆空间研究述评——基于CiteSpace数据分析网络图谱 被引量:9
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作者 成俊颖 史卫华 +1 位作者 成伟华 胡萍 《图书馆工作与研究》 CSSCI 北大核心 2018年第4期17-24,共8页
本文通过对2007-2016年国内图书馆空间研究相关文献进行网络图谱和文献内容的分析,探讨近年图书馆空间研究热点,并进一步分析得出图书馆空间服务中作为核心要素的服务与管理、作为直接要素的空间规划与设计、作为环境要素的建筑和人文... 本文通过对2007-2016年国内图书馆空间研究相关文献进行网络图谱和文献内容的分析,探讨近年图书馆空间研究热点,并进一步分析得出图书馆空间服务中作为核心要素的服务与管理、作为直接要素的空间规划与设计、作为环境要素的建筑和人文环境设计,以及作为连接要素的信息化技术四大构建要素,以期为未来图书馆空间服务的发展提供参考与借鉴。 展开更多
关键词 图书馆空间 要素分析 CITEspace
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一种新的基于factor curve的变形控制方法 被引量:4
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作者 金小刚 鲍虎军 彭群生 《软件学报》 EI CSCD 北大核心 1996年第9期537-541,共5页
本文提出了一种新的基于factorcurve的变形控制方法.Barr的整体非线性变形和Watt的时空因子曲线方法都不同程度地依赖于某种解析表达式,不便于进行统一的控制.作者首次对因子曲线进行了分类,提供了一种统一的控... 本文提出了一种新的基于factorcurve的变形控制方法.Barr的整体非线性变形和Watt的时空因子曲线方法都不同程度地依赖于某种解析表达式,不便于进行统一的控制.作者首次对因子曲线进行了分类,提供了一种统一的控制方式,因而非常适合于动画系统.把因子曲线本身作为可变参数的动画控制方法不仅包含了Barr的tapering和twisting操作,而且还包含了Watt的因子曲线变形控制方法.因而动画师有更多的余地对变形进行有效的控制. 展开更多
关键词 空间变形 因子曲线 计算机动画 变形控制
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Analysis of the Composition of Waterfront Architectural Space——A Case Study of Integrated Architectural Design of Library, Archive and Science and Technology Museum in Fuqing City of China 被引量:1
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作者 周丽彬 林从华 +1 位作者 林晓嵩 蔡丽蓉 《Journal of Landscape Research》 2011年第10期13-16,20,共5页
After the understanding of the concept and characteristics of waterfront architectural space, by taking library, archive, and science and technology museum in Fuqing City for example, the paper had pointed out design ... After the understanding of the concept and characteristics of waterfront architectural space, by taking library, archive, and science and technology museum in Fuqing City for example, the paper had pointed out design techniques and features of their natural geological space, planning structure space, traditional courtyard space and architectural indoor space. It had illustrated their structure of "one center and three axes" in detail. Environmental factor had been regarded in plane planning layout. Semi-enclosed space of "cultural square", sequential space of "open courtyard", and well-spaced space of "vertical ecological courtyard" had been created. Based on these spaces, courtyard and garden environments for reading, rest, leisure and communication had been constructed. It was hoped to inspire design idea of waterfront architectures, so as to create waterfront architectures with times spirit and national feature. 展开更多
关键词 WATERFRONT architectures Spatial CREATION Ecological COURTYARD factor Sequence Sharing space
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SPACE肽修饰成纤维细胞生长因子21的制备及对小鼠皮肤瘢痕形成的抑制作用 被引量:2
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作者 曾静 熊庆 +3 位作者 张丽丽 袁娟 何莹 邱黎菲 《中国免疫学杂志》 CAS CSCD 北大核心 2021年第11期1308-1312,共5页
目的:制备SPACE肽修饰的成纤维细胞生长因子21(FGF21-SPACE)并探讨其对小鼠皮肤瘢痕形成的抑制作用。方法:将SPACE肽融合表达于FGF21的羧基端,使用大肠杆菌表达系统获得FGF21-SPACE重组蛋白,并制备相应的卡波姆凝胶制剂,聚丙烯酰胺凝胶... 目的:制备SPACE肽修饰的成纤维细胞生长因子21(FGF21-SPACE)并探讨其对小鼠皮肤瘢痕形成的抑制作用。方法:将SPACE肽融合表达于FGF21的羧基端,使用大肠杆菌表达系统获得FGF21-SPACE重组蛋白,并制备相应的卡波姆凝胶制剂,聚丙烯酰胺凝胶电泳(SDS-PAGE)与Western blot鉴定其分子量,对重组蛋白携带的组氨酸(His)标签进行免疫组织化学染色,以检测其透皮能力。皮下注射博来霉素诱导小鼠皮肤瘢痕模型,动物实验分为4组,即对照组、模型组、FGF21组、FGF21-SPACE组。HE与Masson染色检测形态学变化;免疫荧光染色检测CD31、TGF-β1表达;Western blot检测α-SMA、纤连蛋白、胶原蛋白Ⅰ的表达。结果:FGF21与FGF21-SPACE的理论分子量分别为25.54 kD与26.61 kD,与SDS-PAGE及Western blot鉴定结果相一致。涂抹FGF21-SPACE凝胶的皮肤组织His染色强度明显强于FGF21凝胶,而空白凝胶则为阴性染色。与FGF21组相比较,FGF21-SPACE组的真皮厚度与纤维化程度降低,CD31表达升高,TGF-β1、α-SMA、纤连蛋白、胶原蛋白Ⅰ表达降低。结论:FGF21-SPACE重组蛋白具备较好的透皮能力,可以抑制皮肤瘢痕形成,促进血管生成,降低纤维化相关因子的表达,具有较好的应用前景。 展开更多
关键词 space 成纤维细胞生长因子21 皮肤瘢痕 纤维化 血管生成
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A CLASS OF COMPOUND VECTOR-VALUED PROBLEM AND FACTORIZATION OF MATRIX FUNCTION 被引量:2
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作者 郭国安 杜金元 《Acta Mathematica Scientia》 SCIE CSCD 2010年第1期173-179,共7页
In this article, we consider a class of compound vector-valued problem on upper-half plane C+, which consists of vector Riemann problem along a closed contour in C+ with matrix coefficient in H61der class and vector... In this article, we consider a class of compound vector-valued problem on upper-half plane C+, which consists of vector Riemann problem along a closed contour in C+ with matrix coefficient in H61der class and vector Hilbert problem on the real axis with essential bounded measurable matrix coefficient. Under appropriate assumption we obtain its solution by use of Corona theorem and factorization of matrix functions in decomposed Banach algebras. 展开更多
关键词 compound vector-valued problem Corona theorem canonical factorization Hardy space
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基于CiteSpace的分级诊疗下居民就诊行为影响因素分析
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作者 李赣 韩传峰 《江苏卫生事业管理》 2022年第6期824-827,835,共5页
打破分级诊疗制度实施困境的关键在于居民在首诊时选择基层医疗,但居民就诊行为选择是一个复杂的决策过程,只有明确就诊行为选择的影响因素,才能制定更有效的政策和干预措施。作者选取2010年~2021年中国知网数据库收录的关于分级诊疗下... 打破分级诊疗制度实施困境的关键在于居民在首诊时选择基层医疗,但居民就诊行为选择是一个复杂的决策过程,只有明确就诊行为选择的影响因素,才能制定更有效的政策和干预措施。作者选取2010年~2021年中国知网数据库收录的关于分级诊疗下居民就诊行为影响因素研究的中文期刊论文作为来源资料,利用CiteSpace软件进行发文数量、作者、研究机构以及研究热点的可视化分析。基于文献分析,本文系统提出居民就诊行为影响因素,并提出进一步研究方向。 展开更多
关键词 分级诊疗 Cite space 就诊行为 影响因素 可视化分析
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Combination and distribution of reservoir space in complex carbonate rocks 被引量:2
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作者 Lun Zhao Shu-Qin Wang +4 位作者 Wen-Qi Zhao Man Luo Cheng-Gang Wang Hai-Li Cao Ling He 《Petroleum Science》 SCIE CAS CSCD 2016年第3期450-462,共13页
This paper discusses the reservoir space in carbonate rocks in terms of types,combination features,distribution regularity,and controlling factors,based on core observations and tests of the North Truva Oilfield,Caspi... This paper discusses the reservoir space in carbonate rocks in terms of types,combination features,distribution regularity,and controlling factors,based on core observations and tests of the North Truva Oilfield,Caspian Basin.According to the reservoir space combinations,carbonate reservoirs can be divided into four types,i.e.,pore,fracture-pore,pore-cavity-fracture,and pore-cavity.Formation and distribution of these reservoirs is strongly controlled by deposition,diagenesis,and tectonism.In evaporated platform and restricted platform facies,the reservoirs are predominately affected by meteoric fresh water leaching in the supergene-para-syngenetic period and by uplifting and erosion in the late stage,making both platform facies contain all the above-mentioned four types of reservoirs,with various pores,such as dissolved cavities and dissolved fractures,or structural fractures occasionally in favorable structural locations.In open platform facies,the reservoirs deposited continuously in deeper water,in an environment of alternative high-energy shoals(where pore-fracture-type reservoirs are dominant) and low-energy shoals(where pore reservoirs are dominant). 展开更多
关键词 Caspian Basin Carbonate rock of platform facies Reservoir space type Reservoir type Controlling factor Distribution regularity
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THREE-DIMENSIONAL INTERACTIONS OF A HALF-PLANE CRACK IN A TRANSVERSELY ISOTROPIC PIEZOELECTRIC SPACE WITH RESULTANT SOURCES 被引量:3
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作者 Hou Pengfei Pan Xiaoping Ding Haojiang 《Acta Mechanica Solida Sinica》 SCIE EI 2005年第3期265-271,共7页
Exact solutions in elementary functions are derived for the stress and electric displacement intensity factors of a half-plane crack in a transversely isotropic piezoelectric space interacting with various resultant s... Exact solutions in elementary functions are derived for the stress and electric displacement intensity factors of a half-plane crack in a transversely isotropic piezoelectric space interacting with various resultant sources, including force dipole, electric dipole, moment, force dilatation and rotation. Such force and charge sources may model defects like vacancies, foreign particles and dislocations. The locations and orientations of the stress and charge sources with respect to the crack are arbitrary. 展开更多
关键词 half-plane crack piezoelectric space intensity factor resultant source
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Radio Heliographic Diagnostics of Solar Activity That Governs Space Weather
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作者 G.Y.Smolkov 《空间科学学报》 CAS CSCD 北大核心 2005年第5期338-344,共7页
In this paper, the possibility and some results of radioheliographic study of space weather solar factors are shortly described.
关键词 太阳活动 空间气候 无线电 磁场
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中国农业全要素生产率研究进展与前沿——基于CiteSpace的文献计量可视化分析 被引量:11
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作者 雷绍海 王成军 《云南农业大学学报(社会科学版)》 2022年第3期124-133,共10页
为了掌握中国农业全要素生产率的研究进展与前沿,探究中国农业全要素生产率的知识结构和主题演变,本文基于中国知网(CNKI)数据库,采用文献计量学方法,对1990—2020年内791篇中国农业全要素生产率相关文献的研究内容、研究主题和热点演... 为了掌握中国农业全要素生产率的研究进展与前沿,探究中国农业全要素生产率的知识结构和主题演变,本文基于中国知网(CNKI)数据库,采用文献计量学方法,对1990—2020年内791篇中国农业全要素生产率相关文献的研究内容、研究主题和热点演变进行系统分析。30年内中国农业全要素生产率研究呈现出阶段性演化发展特征,不断形成综合学科交叉性的研究范式,各主题之间的演变发展相辅相成,不断推进农业全要素生产率研究领域向外扩张,形成学科知识的融合和综合应用。目前中国农业全要素生产率研究热点是农业可持续性增长,绿色农业全要素生产率及各种因素对农业全要素生产率的影响研究等。在Timeline聚类分析图谱上可见各研究主题间边界清晰;研究方法和研究指标的选取,以及对要素投入质量的评估将是未来全要素生产率研究领域的重点和难点。 展开更多
关键词 农业全要素生产率 研究综述 知识图谱 CNKI CITEspace
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NONCOMMUTATIVE ORLICZ-HARDY SPACES 被引量:2
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作者 阿布都艾尼.阿不都热西提 吐尔德别克 《Acta Mathematica Scientia》 SCIE CSCD 2014年第5期1584-1592,共9页
Let (Φ,Ψ) be a pair of complementary N-functions and HΦ(A) and HΨ(A) be the associated noncommutative Orlicz-Hardy spaces. We extend the Riesz, Szeg&#168;o and inner-outer type factorization theorems of Hp... Let (Φ,Ψ) be a pair of complementary N-functions and HΦ(A) and HΨ(A) be the associated noncommutative Orlicz-Hardy spaces. We extend the Riesz, Szeg&#168;o and inner-outer type factorization theorems of Hp(A) to this case. 展开更多
关键词 noncommutative Orlicz spaces noncommutative Orlicz-Hardy spaces Riesztype factorization Szego type factorization outer operators
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Effect of radiation-induced mean wavelength shift in optical fibers on the scale factor of an interferometric fiber optic gyroscope at a wavelength of 1300 nm 被引量:7
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作者 金靖 王学勤 +1 位作者 林松 宋凝芳 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第9期366-372,共7页
In order to analyze the effect of wavelength-dependent radiation-induced attenuation (RIA) on the mean trans- mission wavelength in optical fiber and the scale factor of interferometric fiber optic gyroscopes (IFOG... In order to analyze the effect of wavelength-dependent radiation-induced attenuation (RIA) on the mean trans- mission wavelength in optical fiber and the scale factor of interferometric fiber optic gyroscopes (IFOGs), three types of polarization-maintaining (PM) fibers are tested by using a 60Co γ-radiation source. The observed different mean wave- length shift (MWS) behaviors for different fibers are interpreted by color-center theory involving dose rate-dependent absorption bands in ultraviolet and visible ranges and total dose-dependent near-infrared absorption bands. To evaluate the mean wavelength variation in a fiber coil and the induced scale factor change for space-borne IFOGs under low radiation doses in a space environment, the influence of dose rate on the mean wavelength is investigated by testing four germanium (Ge) doped fibers and two germanium-phosphorus (Ge-P) codoped fibers irradiated at different dose rates. Experimental results indicate that the Ge-doped fibers show the least mean wavelength shift during irradiation and their mean wavelength of optical signal transmission in fibers will shift to a shorter wavelength in a low-dose-rate radiation environment. Finally, the change in the scale factor of IFOG resulting from the mean wavelength shift is estimated and tested, and it is found that the significant radiation-induced scale factor variation must be considered during the design of space-borne IFOGs. 展开更多
关键词 space radiation fiber optic gyroscope scale factor mean wavelength
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THREE-DIMENSIONAL INTERACTIONS OF CIRCULAR CRACK IN TRANSVERSELY ISOTROPIC PIEZOELECTRIC SPACE WITH RESULTANT SOURCES 被引量:1
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作者 侯鹏飞 丁皓江 梁以德 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第11期1439-1449,共11页
Exact solutions in form of elementary functions were derived for the stress and electric displacement intensity factors of a circular crack in a transversely isotropic piezoelectric space interacting with various stre... Exact solutions in form of elementary functions were derived for the stress and electric displacement intensity factors of a circular crack in a transversely isotropic piezoelectric space interacting with various stress and charge sources: force dipoles, electric dipoles, moments, force dilatation and rotation. The circular crack includes penny-shaped crack and external circular crack and the locations and orientations of these resultant sources with respect to the crack are arbitrary. Such stress and charge sources may model defects like vacancies, foreign particles, and dislocations. Numerical results are presented at last. 展开更多
关键词 piezoelectric space circular crack resultant source intensity factor
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基于Cite Space的农业科技成果转化影响因素分析
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作者 钟振东 《农业科技与装备》 2023年第2期68-70,共3页
借助Cite Space方法,以CNKI数据库为基础,分析2000—2021年农业科技成果转化的影响因素,结论表明:对农业科技成果转化影响因素的研究在不断增长后有所放缓,但国家科技成果转化政策的出台使农业科技成果转化影响因素研究进一步增加;作者... 借助Cite Space方法,以CNKI数据库为基础,分析2000—2021年农业科技成果转化的影响因素,结论表明:对农业科技成果转化影响因素的研究在不断增长后有所放缓,但国家科技成果转化政策的出台使农业科技成果转化影响因素研究进一步增加;作者及研究机构之间的合作程度较低,跨平台跨行业之间合作较少;未来研究趋势主要集中于农业经济、科技创新、科技成果产业化和市场化方向。 展开更多
关键词 农业 科技成果转化 影响 因素 Cite space
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