On the assumption that seismic source is simplified as linear rupture fault with finite length, this paper qualitatively studies the seismic source effects on space correlation of strong ground motion. Based on expand...On the assumption that seismic source is simplified as linear rupture fault with finite length, this paper qualitatively studies the seismic source effects on space correlation of strong ground motion. Based on expanding expression of Fourier spectrum of strong ground motion with space coordinate variables, this paper also gives a expression of describing correlation of strong ground motion field. According to far-field condition, the theoretical formula of the expression can be obtained. Furthermore, this paper presents a theoretical formula of estimation the radius of strong ground motion field, which depends on expansion condition of Fourier spectrum of strong ground motion, with space variables. At last, taking one earthquake as an example, this paper gives three-dimension patterns of radius of the field with epicenter distance and azimuth as well as frequency.展开更多
Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasi...Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasis on knife cutting, and a focus on freshness. It emphasizes the original taste anda clear and mellow taste, which is extremely characterized by Lingnan culture. In this paper, research dataare collected from social media and online comments, supplemented by targeted interviews, questionnaires,and other methods. It uses grounded theory for data analysis. Through the induction and summary ofopen coding, axial coding, and selective coding based on grounded theory, it summarizes the physical space,cultural space, spiritual cultural space, and communication space of Chaoshan cuisine culture.展开更多
文摘On the assumption that seismic source is simplified as linear rupture fault with finite length, this paper qualitatively studies the seismic source effects on space correlation of strong ground motion. Based on expanding expression of Fourier spectrum of strong ground motion with space coordinate variables, this paper also gives a expression of describing correlation of strong ground motion field. According to far-field condition, the theoretical formula of the expression can be obtained. Furthermore, this paper presents a theoretical formula of estimation the radius of strong ground motion field, which depends on expansion condition of Fourier spectrum of strong ground motion, with space variables. At last, taking one earthquake as an example, this paper gives three-dimension patterns of radius of the field with epicenter distance and azimuth as well as frequency.
基金Zhaoqing University Students Innovative Training Program Project(X202310580164).
文摘Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasis on knife cutting, and a focus on freshness. It emphasizes the original taste anda clear and mellow taste, which is extremely characterized by Lingnan culture. In this paper, research dataare collected from social media and online comments, supplemented by targeted interviews, questionnaires,and other methods. It uses grounded theory for data analysis. Through the induction and summary ofopen coding, axial coding, and selective coding based on grounded theory, it summarizes the physical space,cultural space, spiritual cultural space, and communication space of Chaoshan cuisine culture.
