The paper deals with Jan Patocka＇s considerations on architecture. It presents Patocka＇s concept of space as the union of two sensory fields, the kinaesthetic-tactile and the visual, and it emphasizes that this unio...The paper deals with Jan Patocka＇s considerations on architecture. It presents Patocka＇s concept of space as the union of two sensory fields, the kinaesthetic-tactile and the visual, and it emphasizes that this union is considered as the ＂primordial architecture＂. According to Patocka＇s view, the material architecture is only a consequence of the primordial architecture. The paper also follows Patocka＇s idea of the ＂sacral transubstantiation＂. Patocka argues that, traditionally, the construction of a work of architecture is considered as dependent on favourable conditions, on divine consent with such a construction and the movement of divine powers into constructed work. The origin of architecture is thus religious. The paper considers the relations and differences between the sacred and secular architecture. It highlights Patocka＇s idea that both sacred and secular architecture open a certain world, even thought, the status of the world of sacred architecture differs considerably from that of the world of secular architecture.展开更多
Based on digital signal processing theory,a novel method of designing optical notch filter is proposed for Mach-Zehnder interferometer with cascaded optical fiber rings coupled structure.The method is simple and effec...Based on digital signal processing theory,a novel method of designing optical notch filter is proposed for Mach-Zehnder interferometer with cascaded optical fiber rings coupled structure.The method is simple and effective,and it can be used to implement the designing of the optical notch filter which has arbitrary number of notch points in one free spectrum range(FSR).A design example of notch filter based on cascaded single-fiber-rings is given.On this basis,an improved cascaded double-fiber-rings structure is presented to eliminate the effect of phase shift caused by the single-fiber-ring structure.This new structure can improve the stability and applicability of system.The change of output intensity spectrum is finally investigated for each design parameter and the tuning characteristics of the notch filter are also discussed.展开更多
文摘The paper deals with Jan Patocka＇s considerations on architecture. It presents Patocka＇s concept of space as the union of two sensory fields, the kinaesthetic-tactile and the visual, and it emphasizes that this union is considered as the ＂primordial architecture＂. According to Patocka＇s view, the material architecture is only a consequence of the primordial architecture. The paper also follows Patocka＇s idea of the ＂sacral transubstantiation＂. Patocka argues that, traditionally, the construction of a work of architecture is considered as dependent on favourable conditions, on divine consent with such a construction and the movement of divine powers into constructed work. The origin of architecture is thus religious. The paper considers the relations and differences between the sacred and secular architecture. It highlights Patocka＇s idea that both sacred and secular architecture open a certain world, even thought, the status of the world of sacred architecture differs considerably from that of the world of secular architecture.
基金supported by the National Natural Science Foundation of China (No.10804070)the Innovation Program of Shanghai Municipal Education Commission (No.09YZ06)Shanghai Leading Academic Discipline Project (No.S30108)
文摘Based on digital signal processing theory,a novel method of designing optical notch filter is proposed for Mach-Zehnder interferometer with cascaded optical fiber rings coupled structure.The method is simple and effective,and it can be used to implement the designing of the optical notch filter which has arbitrary number of notch points in one free spectrum range(FSR).A design example of notch filter based on cascaded single-fiber-rings is given.On this basis,an improved cascaded double-fiber-rings structure is presented to eliminate the effect of phase shift caused by the single-fiber-ring structure.This new structure can improve the stability and applicability of system.The change of output intensity spectrum is finally investigated for each design parameter and the tuning characteristics of the notch filter are also discussed.
