Under the background of economic globalization,the compound technical and skilled talents with a certain compre?hensive ability of professional foreign languages are the urgent needs of enterprises.Under the current e...Under the background of economic globalization,the compound technical and skilled talents with a certain compre?hensive ability of professional foreign languages are the urgent needs of enterprises.Under the current environment of Higher Vo?cational education,there are many problems in the teaching of professional foreign languages.Students,teachers and textbooks are not well integrated to form an effective teaching.By investigating the actual situation and according to my own experience,the teachers put forward the"four-step"teaching method of professional English,which can simplify the complexity,orientate accurately,simulate the training of various situations and strengthen the use of various means.It not only improves the interest of students in learning professional English,but also reduces the teachers'teaching burden and improves the existing teaching effect.展开更多
To enhance the aerodynamic performance of wind turbine blades,this study proposes the adoption of a bionic airfoil inspired by the aerodynamic shape of an eagle.Based on the blade element theory,a non-uniform extracti...To enhance the aerodynamic performance of wind turbine blades,this study proposes the adoption of a bionic airfoil inspired by the aerodynamic shape of an eagle.Based on the blade element theory,a non-uniform extraction method of blade elements is employed for the optimization design of the considered wind turbine blades.Moreover,Computational Fluid Dynamics(CFD)is used to determine the aerodynamic performances of the eagle airfoil and a NACA2412 airfoil,thereby demonstrating the superior aerodynamic performance of the former.Finally,a mathematical model for optimizing the design of wind turbine blades is introduced and a comparative analysis is conducted with respect to the aerodynamic performances of blades designed using a uniform extraction approach.It is found that the blades designed using non-uniform extraction exhibit better aerodynamic performance.展开更多
As an important base for the training of skilled personnel,the ideological and political education of counselors plays a vital role in the process of personnel training in higher vocational colleges.Based on the analy...As an important base for the training of skilled personnel,the ideological and political education of counselors plays a vital role in the process of personnel training in higher vocational colleges.Based on the analysis of the current situation of ideological and political education of counselors in higher vocational colleges,this paper analyzes the application value and strategies of psychology in ideological and political education,aiming at providing a set of systematic psychological application frameworks for counselors in higher vocational colleges,so as to promote the all-round development of students and realize the fundamental task of cultivating morality and educating people.展开更多
According to the abstract and practical characteristics of introduction to software engineering,the mixed flipped classroom teaching method is used in the teaching process.It can stimulate students’interest in learni...According to the abstract and practical characteristics of introduction to software engineering,the mixed flipped classroom teaching method is used in the teaching process.It can stimulate students’interest in learning.Taking the SPOC course“Introduction to software engineering”offered by Chongqing University as an example,this study uses the blended flipped classroom teaching method of“learning before teaching”.Online teaching resources design,teaching process design and assessment design were devised and practiced.Through the practice of blended flipped classroom teaching based on SPOC,the students’autonomous learning ability is improved.The effective combination of online teaching and offline classroom is realized.The teaching effect of this course has improved.展开更多
Residual stresses produced in polycrystalline CBN abrasive grits during a high-frequency induction brazing process are calculated by using ?nite element analysis, with a consideration of the nonuniform temperature dis...Residual stresses produced in polycrystalline CBN abrasive grits during a high-frequency induction brazing process are calculated by using ?nite element analysis, with a consideration of the nonuniform temperature distribution in the induction brazing model. The in?uences of induction brazing parameters on the residual stresses of polycrystalline CBN abrasive grits have been analyzed, including the embedding depth, grit side length, etc. Results obtained show that the tensile stress with a 40% embedding depth is 292 MPa, which is the minimum on the bonding interface compared with other embedding depths. Meanwhile, the maximum tensile stress is 575 MPa, with an increase of 59% compared with that of a grit side length of 50 mm. Finally, the simulation results of the brazing residual stress of polycrystalline CBN abrasive grits have been con?rmed valid based on the residual stress measurement of the brazed monocrystalline CBN grit.展开更多
文摘Under the background of economic globalization,the compound technical and skilled talents with a certain compre?hensive ability of professional foreign languages are the urgent needs of enterprises.Under the current environment of Higher Vo?cational education,there are many problems in the teaching of professional foreign languages.Students,teachers and textbooks are not well integrated to form an effective teaching.By investigating the actual situation and according to my own experience,the teachers put forward the"four-step"teaching method of professional English,which can simplify the complexity,orientate accurately,simulate the training of various situations and strengthen the use of various means.It not only improves the interest of students in learning professional English,but also reduces the teachers'teaching burden and improves the existing teaching effect.
基金supported by the National Natural Science Foundation Projects(Grant Number 51966018)the Chongqing Natural Science Foundation of China(Grant Number cstc2020jcyjmsxmX0314)+2 种基金the Key Research&Development Program of Xinjiang(Grant Number 2022B01003)Ningxia Key Research and Development Program of Foreign Science and Technology Cooperation Projects(202204)the Key Scientific Research Project in Higher Education Institution from the Ningxia Education Department(2022115).
文摘To enhance the aerodynamic performance of wind turbine blades,this study proposes the adoption of a bionic airfoil inspired by the aerodynamic shape of an eagle.Based on the blade element theory,a non-uniform extraction method of blade elements is employed for the optimization design of the considered wind turbine blades.Moreover,Computational Fluid Dynamics(CFD)is used to determine the aerodynamic performances of the eagle airfoil and a NACA2412 airfoil,thereby demonstrating the superior aerodynamic performance of the former.Finally,a mathematical model for optimizing the design of wind turbine blades is introduced and a comparative analysis is conducted with respect to the aerodynamic performances of blades designed using a uniform extraction approach.It is found that the blades designed using non-uniform extraction exhibit better aerodynamic performance.
文摘As an important base for the training of skilled personnel,the ideological and political education of counselors plays a vital role in the process of personnel training in higher vocational colleges.Based on the analysis of the current situation of ideological and political education of counselors in higher vocational colleges,this paper analyzes the application value and strategies of psychology in ideological and political education,aiming at providing a set of systematic psychological application frameworks for counselors in higher vocational colleges,so as to promote the all-round development of students and realize the fundamental task of cultivating morality and educating people.
基金supported by the Teaching Reform Research Project of Chongqing University“Research on the Continuous Improvement Mechanism of Software Engineering for Engineering Education Professional Certification”(Grant No.2021Y12),“Big Data Engineering Training and Teaching Exploration in the Context of Industry Education Integration”(Grant No.2021Y13)the Teaching Reform Research Project of Chongqing City“Research and Practice on the Training System of Data Science and Big Data Professionals”(Grant No.203200)the Research Project of Chongqing Postgraduate Education and Teaching Reform“Exploration and Practice of the Cultivation of the Experimental Ability of the Software Engineering Academic Master under the Cooperation of Science and Education with Industry and Education”(Grant No.yjg213020).
文摘According to the abstract and practical characteristics of introduction to software engineering,the mixed flipped classroom teaching method is used in the teaching process.It can stimulate students’interest in learning.Taking the SPOC course“Introduction to software engineering”offered by Chongqing University as an example,this study uses the blended flipped classroom teaching method of“learning before teaching”.Online teaching resources design,teaching process design and assessment design were devised and practiced.Through the practice of blended flipped classroom teaching based on SPOC,the students’autonomous learning ability is improved.The effective combination of online teaching and offline classroom is realized.The teaching effect of this course has improved.
基金supported by the National Natural Science Foundation of China(No.51775275)the Fundamental Research Funds for the Central Universities(No.NE2014103 and No.NZ2016107)
文摘Residual stresses produced in polycrystalline CBN abrasive grits during a high-frequency induction brazing process are calculated by using ?nite element analysis, with a consideration of the nonuniform temperature distribution in the induction brazing model. The in?uences of induction brazing parameters on the residual stresses of polycrystalline CBN abrasive grits have been analyzed, including the embedding depth, grit side length, etc. Results obtained show that the tensile stress with a 40% embedding depth is 292 MPa, which is the minimum on the bonding interface compared with other embedding depths. Meanwhile, the maximum tensile stress is 575 MPa, with an increase of 59% compared with that of a grit side length of 50 mm. Finally, the simulation results of the brazing residual stress of polycrystalline CBN abrasive grits have been con?rmed valid based on the residual stress measurement of the brazed monocrystalline CBN grit.
