Modeling of the roughness in micro-nano scale and its influence have not been fully investigated, however the roughness will cause amplitude and phase errors of the radiating slot, and decrease the precision and effic...Modeling of the roughness in micro-nano scale and its influence have not been fully investigated, however the roughness will cause amplitude and phase errors of the radiating slot, and decrease the precision and efficiency of the SWA in Ku-band. Firstly, the roughness is simulated using the electromechanical coupled（EC） model. The relationship between roughness and the antenna＇s radiation properties is obtained. For verification, an antenna proto- type is manufactured and tested, and the simulation method is introduced. According to the prototype, a contrasting experiment dealing with the flatness of the radiating plane is conducted to test the simulation method. The advantage of the EC model is validated by comparisons of the EC model and two classical roughness models （sine wave and fractal function）, which shows that the EC model gives a more accurate description model for roughness, the maxi- mum error is 13%. The existence of roughness strongly broadens the beamwidth and raises the side-lobe level of SWA, which is 1.2 times greater than the ideal antenna. In addition, effect of the EC model＇s evaluation indices is investigated, the most affected scale of the roughness is found, which is 1/10 of the working wavelength. The proposed research provides the instruction for antenna designing and manufacturing.展开更多
The micro era,when we can see big pictures through micro details,features in innov4tive individuation,decentralized open ecology and interactive democracy,during which the college students5 political identity faces ch...The micro era,when we can see big pictures through micro details,features in innov4tive individuation,decentralized open ecology and interactive democracy,during which the college students5 political identity faces challenges and dilemmas in different dimensions.Combining real problems,this essay proposes to enhance college students’political identity from the perspective of ideological and political education,which embraces every college students,and embeds in every process as well as aspect.It pays attention to the multiple interactions of educational subjects to optimize the path of political identity education.Resource integration is embedded in students'"micro-life"to strengthen the quality of political identity education.Education content and methods are innovated to build a pattern of ideological and political education.展开更多
With the development of society and the progress of information science and technology, it has entered into the "Micro-Era". In the micro-era micro-film was born, micro film playback time is short, and the a...With the development of society and the progress of information science and technology, it has entered into the "Micro-Era". In the micro-era micro-film was born, micro film playback time is short, and the amount of investment in the production cycle is short, forming a unique advantage, and micro-film aesthetic acceptance characteristics are different from the traditional film, the audience's aesthetic acceptance of features has also changed accordingly. This paper analyzes the relationship between micro-film and micro-era, and analyzes the micro-film to change the aesthetic acceptance of the audience from the aesthetic acceptance, aesthetic needs, aesthetic psychology and aesthetic experience to analyze and summarize. Hope to be able to cause domestic and foreign micro-film-related researchers and practitioners of thinking, and strive to micro-film can be further develop.展开更多
基金Supported by National Natural Science Foundation of China(Grant Nos.51305322,51405364,51475348)
文摘Modeling of the roughness in micro-nano scale and its influence have not been fully investigated, however the roughness will cause amplitude and phase errors of the radiating slot, and decrease the precision and efficiency of the SWA in Ku-band. Firstly, the roughness is simulated using the electromechanical coupled（EC） model. The relationship between roughness and the antenna＇s radiation properties is obtained. For verification, an antenna proto- type is manufactured and tested, and the simulation method is introduced. According to the prototype, a contrasting experiment dealing with the flatness of the radiating plane is conducted to test the simulation method. The advantage of the EC model is validated by comparisons of the EC model and two classical roughness models （sine wave and fractal function）, which shows that the EC model gives a more accurate description model for roughness, the maxi- mum error is 13%. The existence of roughness strongly broadens the beamwidth and raises the side-lobe level of SWA, which is 1.2 times greater than the ideal antenna. In addition, effect of the EC model＇s evaluation indices is investigated, the most affected scale of the roughness is found, which is 1/10 of the working wavelength. The proposed research provides the instruction for antenna designing and manufacturing.
文摘The micro era,when we can see big pictures through micro details,features in innov4tive individuation,decentralized open ecology and interactive democracy,during which the college students5 political identity faces challenges and dilemmas in different dimensions.Combining real problems,this essay proposes to enhance college students’political identity from the perspective of ideological and political education,which embraces every college students,and embeds in every process as well as aspect.It pays attention to the multiple interactions of educational subjects to optimize the path of political identity education.Resource integration is embedded in students'"micro-life"to strengthen the quality of political identity education.Education content and methods are innovated to build a pattern of ideological and political education.
文摘With the development of society and the progress of information science and technology, it has entered into the "Micro-Era". In the micro-era micro-film was born, micro film playback time is short, and the amount of investment in the production cycle is short, forming a unique advantage, and micro-film aesthetic acceptance characteristics are different from the traditional film, the audience's aesthetic acceptance of features has also changed accordingly. This paper analyzes the relationship between micro-film and micro-era, and analyzes the micro-film to change the aesthetic acceptance of the audience from the aesthetic acceptance, aesthetic needs, aesthetic psychology and aesthetic experience to analyze and summarize. Hope to be able to cause domestic and foreign micro-film-related researchers and practitioners of thinking, and strive to micro-film can be further develop.
