The acceptance gap micro control system applies to the entrance ramp in which the prior consideration is given to the merging safety. Based on the actual condition of interchanges and the vehicle composition in our c...The acceptance gap micro control system applies to the entrance ramp in which the prior consideration is given to the merging safety. Based on the actual condition of interchanges and the vehicle composition in our country, the traffic characteristics for high class roadways are analyzed and the system simulation model is developed. A simulation example is also given in the paper. Through the simulation, the optimal ramp control plan can be obtained.展开更多
This paper proposed the high-frequency, multi-harmonic-controlled, Class-F power amplifier (PA) implemented with 0.5 μm GaN Hetrojunction Electron Mobility Transistor (HEMT). For PA design at high frequencies, parasi...This paper proposed the high-frequency, multi-harmonic-controlled, Class-F power amplifier (PA) implemented with 0.5 μm GaN Hetrojunction Electron Mobility Transistor (HEMT). For PA design at high frequencies, parasitics of a transistor significantly increase the difficulty of harmonic manipulation, compared to low-frequency cases. To overcome this issue, we propose a novel design methodology based on a band-reject, low-pass, output matching network, which is realized with passive components. This network provides optimal fundamental impedance and allows harmonic control up to the third order to enable an efficient Class-F behavior. The implemented PA exhibits performance at 2.5 GHz with a 50% PAE, 14 dB gain, and 10 W output power.展开更多
Public awareness is the basic consciousness that citizens must have in modern society, it is the embodiment of civilization accomplishment, and it is also an important part of moral education in schools. The lack of p...Public awareness is the basic consciousness that citizens must have in modern society, it is the embodiment of civilization accomplishment, and it is also an important part of moral education in schools. The lack of public awareness education and publicity has caused many negative events in social and public fields, and has also caused people to reflect and pay attention to public awareness education. Therefore, class management is very important for students and even for the whole school. Therefore, this paper discusses what problems will exist in junior high school class management, and puts forward some solutions based on the actual situation, in order to improve the overall level of class management.展开更多
There are rich moral education resources in chemistry, and it has a unique advantage in moral education. Based on this, this paper, on the basis of analyzing the moral education materials in senior high school chemist...There are rich moral education resources in chemistry, and it has a unique advantage in moral education. Based on this, this paper, on the basis of analyzing the moral education materials in senior high school chemistry textbooks, explores the infiltration methods of moral education in senior high school chemistry classes, in order to provide reference for the successful integration of moral education into senior high school chemistry teaching.展开更多
With the deepening of teaching reform, the teaching model of senior high school has gradually changed. The education department has paid more attention to the interaction between teachers and students in senior high s...With the deepening of teaching reform, the teaching model of senior high school has gradually changed. The education department has paid more attention to the interaction between teachers and students in senior high school music classroom teaching. It is believed that the "interesting" teaching model of teacher-student interaction can stimulate students' interest and enthusiasm in music. The new curriculum pays more attention to the cultivation of students' comprehensive quality and requires high school teaching to aim at realizing students' all-round development. Therefore, teachers need to actively establish a harmonious teacher-student relationship with students, strengthen communication in the classroom, and carry out "interesting" teaching of teacher-student interaction. This paper expounds the role of teacher-student interaction "interesting" teaching mode, analyzes the current situation of high school music classroom teaching, and discusses how to use teacher-student interaction "interesting" teaching mode for music teaching, hoping to provide reference for related research.展开更多
文摘The acceptance gap micro control system applies to the entrance ramp in which the prior consideration is given to the merging safety. Based on the actual condition of interchanges and the vehicle composition in our country, the traffic characteristics for high class roadways are analyzed and the system simulation model is developed. A simulation example is also given in the paper. Through the simulation, the optimal ramp control plan can be obtained.
文摘This paper proposed the high-frequency, multi-harmonic-controlled, Class-F power amplifier (PA) implemented with 0.5 μm GaN Hetrojunction Electron Mobility Transistor (HEMT). For PA design at high frequencies, parasitics of a transistor significantly increase the difficulty of harmonic manipulation, compared to low-frequency cases. To overcome this issue, we propose a novel design methodology based on a band-reject, low-pass, output matching network, which is realized with passive components. This network provides optimal fundamental impedance and allows harmonic control up to the third order to enable an efficient Class-F behavior. The implemented PA exhibits performance at 2.5 GHz with a 50% PAE, 14 dB gain, and 10 W output power.
文摘Public awareness is the basic consciousness that citizens must have in modern society, it is the embodiment of civilization accomplishment, and it is also an important part of moral education in schools. The lack of public awareness education and publicity has caused many negative events in social and public fields, and has also caused people to reflect and pay attention to public awareness education. Therefore, class management is very important for students and even for the whole school. Therefore, this paper discusses what problems will exist in junior high school class management, and puts forward some solutions based on the actual situation, in order to improve the overall level of class management.
文摘There are rich moral education resources in chemistry, and it has a unique advantage in moral education. Based on this, this paper, on the basis of analyzing the moral education materials in senior high school chemistry textbooks, explores the infiltration methods of moral education in senior high school chemistry classes, in order to provide reference for the successful integration of moral education into senior high school chemistry teaching.
文摘With the deepening of teaching reform, the teaching model of senior high school has gradually changed. The education department has paid more attention to the interaction between teachers and students in senior high school music classroom teaching. It is believed that the "interesting" teaching model of teacher-student interaction can stimulate students' interest and enthusiasm in music. The new curriculum pays more attention to the cultivation of students' comprehensive quality and requires high school teaching to aim at realizing students' all-round development. Therefore, teachers need to actively establish a harmonious teacher-student relationship with students, strengthen communication in the classroom, and carry out "interesting" teaching of teacher-student interaction. This paper expounds the role of teacher-student interaction "interesting" teaching mode, analyzes the current situation of high school music classroom teaching, and discusses how to use teacher-student interaction "interesting" teaching mode for music teaching, hoping to provide reference for related research.
