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文化建构主义与再启蒙 被引量:7
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作者 金岱 《华南师范大学学报(社会科学版)》 CSSCI 北大核心 2013年第5期22-31,207,共10页
文化主义是近两百年来国际人文社会研究所经历的历史主义、人本主义、科学主义三大思潮之后出现的当代新思潮,有着多种多样的复杂的问题域。在以"后发现代性与后期现代性相统一"的中国问题的视域中,文化批判主义(包括文化解... 文化主义是近两百年来国际人文社会研究所经历的历史主义、人本主义、科学主义三大思潮之后出现的当代新思潮,有着多种多样的复杂的问题域。在以"后发现代性与后期现代性相统一"的中国问题的视域中,文化批判主义(包括文化解构主义)、文化保守主义是两种突出的思维向度。文化建构主义,是在建构主义的思想流脉中整合与超越主体论建构主义和社会建构主义,在中国问题视域之文化主义的思想流脉中整合与超越文化批判主义(包括文化解构主义)和文化保守主义,并在此两种思想流脉的交汇处生发出来的一种新的思想可能性。1840年以来,转型中国的启蒙经历了前启蒙、启蒙、新启蒙和再启蒙四个阶段。再启蒙是解决当下希望与危机并存的中国问题与中国发展的极为重要的思想任务。而再启蒙的根本特征只能是文化建构主义。 展开更多
关键词 建构主义 文化主义 文化建构主义 再启蒙
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Influence of limited-view scanning on depth imaging of photoacoustic tomography 被引量:1
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作者 吴丹 陶超 +1 位作者 刘晓峻 王学鼎 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第1期273-278,共6页
We study the influence of limited-view scanning on the depth imaging of photoacoustic tomography. The situation, in which absorbers are located at different depths with respect to the limited-view scanning trajectory,... We study the influence of limited-view scanning on the depth imaging of photoacoustic tomography. The situation, in which absorbers are located at different depths with respect to the limited-view scanning trajectory, is called depth imaging and is investigated in this paper. The results show that limited-view scanning causes the reconstructed intensity of deep absorbers to be weaker than that of shallow ones and that deep absorbers will be invisible if the scanning range is too small. The concept of effective scanning angle is proposed to analyse that phenomenon. We find that an effective scanning angle can well predict the relationship between scanning angle and the intensity ratio of absorbers. In addition, limited-view scanning is employed to improve image quality. 展开更多
关键词 photoacoustic tomography limited-view scanning depth imaging back-projection re-construction
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Calibration and data restoration of light field modulated imaging spectrometer
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作者 苏丽娟 严强强 +2 位作者 袁艳 王世丰 刘宇健 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第8期179-186,共8页
A light field modulated imaging spectrometer (LFMIS) can acquire the spatial-spectral datacube of targets of interest or a scene in a single shot. The spectral information of a point target is imaged on the pixels c... A light field modulated imaging spectrometer (LFMIS) can acquire the spatial-spectral datacube of targets of interest or a scene in a single shot. The spectral information of a point target is imaged on the pixels covered by a microlens. The pixels receive spectral information from different spectral filters to the diffraction and misalignments of the optical components. In this paper, we present a linear spectral multiplexing model of the acquired target spectrum. A calibration method is proposed for calibrating the center wavelengths and bandwidths of channels of an LFMIS system based on the liner-variable filter (LVF) and for determining the spectral multiplexing matrix. In order to improve the accuracy of the restored spectral data, we introduce a reconstruction algorithm based on the total least square (TLS) approach. Simulation and experimental results confirm the performance of the spectrum reconstruction algorithm and validate the feasibility of the proposed calibrating scheme. 展开更多
关键词 light field modulated imaging spectrometer linear-variable filter spectral calibration spectral re-construction
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Reconstruction and Restoration of Main Facade and Wooden Ceilings of Hasan Basha Tahir Kuttab &Sabil, Cairo—Egypt
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作者 Mahran F. Anwar 《World Journal of Engineering and Technology》 2019年第1期175-192,共18页
The architectural?complexes?of Hasan Basha Tahir?were suffering from many damages and deformation in different elements as load bearing walls, arches and wooden ceiling. Ground water, salt weathering, air pollution, b... The architectural?complexes?of Hasan Basha Tahir?were suffering from many damages and deformation in different elements as load bearing walls, arches and wooden ceiling. Ground water, salt weathering, air pollution, biological colonization and environmental aspects were the main degradation factors which caused a lot of damage and deterioration phenomena in the complexes. Horizontal and vertical cracks, salts, loss of decorations, and featured dark of the stone surface were noticed at the complexes elements. In addition, the celling of the complex was in a very bad condition;?it had lost a lot of decoration elements, cracking, soot deposition, insects’ holes, and fungi growth. This research will discuss the various deterioration phenomena that?have?effect on the main building materials and cause the damages and discuss the general scientific methodology of the architectural and structural conservation project which was?carried out. 展开更多
关键词 Architectural Complexes OTTOMAN Period Damages Ceiling CONSTRUCTION Bearing Wall Conservation re-construction
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寻找地方的意义:在澳洲华人的身份建构 被引量:3
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作者 田美 黄国文 《中国外语》 CSSCI 北大核心 2015年第1期50-59,共10页
中国出生的第一代移民是目前澳大利亚第三大海外出生移民群体,中国留学生也位列澳大利亚高校第一大海外学生群体。尽管海外华人的跨文化经历已经引起学界广泛关注,但有关这一群体(包括在澳洲出生的第二代移民)在宿主文化中如何建构自我... 中国出生的第一代移民是目前澳大利亚第三大海外出生移民群体,中国留学生也位列澳大利亚高校第一大海外学生群体。尽管海外华人的跨文化经历已经引起学界广泛关注,但有关这一群体(包括在澳洲出生的第二代移民)在宿主文化中如何建构自我的文化身份认同的研究还非常有限。本研究基于对23位澳洲华人的访谈,探寻在澳华人在多元文化环境中建构身份认同的过程及类型。研究发现,在澳华人的文化身份认同具有多样性,大致可以分为分离性中国认同、边缘性中国认同、融合性中澳认同、融入性澳洲认同与多向关联性认同等不同类型。这一研究结果支持社会建构主义的观点,即不同的文化身份认同是在与日常社会环境的交互过程中持续建构的。本研究的发现有助于深化对个体在多元文化环境中身份认同形成及再形成过程的理解,促进经济全球化背景下文化间、族裔间的理解沟通与友好共处。 展开更多
关键词 身份建构 澳洲华人 社会建构学
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Reconstruction Results about the Exponential Radon Transform
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作者 JIANG Jun WANG Jinping 《Wuhan University Journal of Natural Sciences》 CAS 2013年第1期25-28,共4页
In this paper, the properties of the exponential Radon transform and its dual are discussed. Furthermore, the analytical reconstruction formulas of exponential Radon transform with two different methods are developed.
关键词 exponential Radon transform dual transform re-construction formula Dirac function
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Decrease-radix design principle for carrying/borrowing free multi-valued and application in ternary optical computer 被引量:41
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作者 YAN JunYong JIN Yi ZUO KaiZhong 《Science in China(Series F)》 2008年第10期1415-1426,共12页
In this paper a new theory referred to as the decrease-radix design (DRD) is proposed, which is found in the research of logic units of ternary (tri-valued) optical computer. Based on the theory proposed, the prin... In this paper a new theory referred to as the decrease-radix design (DRD) is proposed, which is found in the research of logic units of ternary (tri-valued) optical computer. Based on the theory proposed, the principles and the regulations of the DRD for making operation units of multi-valued operation with carrying/borrowing free are also presented. The research work has come to the following important conclusion: let D be a special state contained in n physical informative states, then one may figure out any multi-valued processors within n^(n×n) carrying/borrowing free n-valued units by the composition some of n×n×(n-1) simplest basic operating units according to the regulations of DRD proposed in this paper. The detailed systematic way of our design regulations is highlighted step by step in the paper with an example of design of a tri-valued logic optical operating unit. The real architecture, the procedure, and the experimental results of our sample in tri-valued logic operating unit are given. Finally, a re-constructible model of ternary logical optical processor is introduced. The theory proposed in the paper has laid down a solid foundation for the design of re-constructible carrying/borrowing free operating units in ternary optical computers and can be widely used as the designing reference in a variety of multi-valued logic operating units. 展开更多
关键词 carrying/borrowing free operating units decrease-radix design re-constructible ternary optical computer
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