By means of the continuation theorem of the coincidence degree theory,the existence of two periodic solutions of a delayed single species model with feedback regulation and harvest term is obtained.
In this paper,a multi-point boundary value problems for a three order nonlinear deferential equation is considered.With the help of coincidence theorem due to Mawhin,a existence theorem is obtained.
The training of reading skill is the focal point of college English teaching. Psychological linguistics provides a new point of view for college English teaching. From the aspect of psychological linguistics theory th...The training of reading skill is the focal point of college English teaching. Psychological linguistics provides a new point of view for college English teaching. From the aspect of psychological linguistics theory this paper discusses some issues, including how to train students to complete the reading process independently, how to build the schema to achieve integrated discourse comprehension, how to choose the most appropriate reading model, in order to improve the English reading skill and provide some enlightenment for college English reading teaching.展开更多
Based on flexible pneumatic actuator(FPA),bending joint and side-sway joint,a new kind of pneumatic dexterous robot finger was developed.The finger is equipped with one five-component force sensor and four contactless...Based on flexible pneumatic actuator(FPA),bending joint and side-sway joint,a new kind of pneumatic dexterous robot finger was developed.The finger is equipped with one five-component force sensor and four contactless magnetic rotary encoders.Mechanical parts and FPAs are integrated,which reduces the overall size of the finger.Driven by FPA directly,the joint output torque is more accurate and the friction and vibration can be effectively reduced.An improved adaptive genetic algorithm(IAGA) was adopted to solve the inverse kinematics problem of the redundant finger.The statics of the finger was analyzed and the relation between fingertip force and joint torque was built.Finally,the finger force/position control principle was introduced.Tracking experiments of fingertip force/position were carried out.The experimental results show that the fingertip position tracking error is within ±1 mm and the fingertip force tracking error is within ±0.4 N.It is also concluded from the theoretical and experimental results that the finger can be controlled and it has a good application prospect.展开更多
In this paper, we study the convergence rate of two-dimensional Baakakov operators with Jacobi-weights and the approximation equivalence theorem is obtained, making use of multivariate decompose skills and results of ...In this paper, we study the convergence rate of two-dimensional Baakakov operators with Jacobi-weights and the approximation equivalence theorem is obtained, making use of multivariate decompose skills and results of one-dimensional Baskakov operators.展开更多
Foreign language learning is hard work while the study on it is a complicated system engineering. It touches not only the problems of linguistics but those of sociology and culture as well. What is involved is not onl...Foreign language learning is hard work while the study on it is a complicated system engineering. It touches not only the problems of linguistics but those of sociology and culture as well. What is involved is not only the foreign language itself but also the emotional elements. Also it covers the macro plan and strategy along with concrete steps and skills. As the foreign language learners, they must undergo kinds of and series of psychological response. There must be a lot of difficulty, problems, even conflicts in the process of learning. Only when they correctly handle the contradictions, coordinate the relationship, make good use of the positive elements and abandon the negative ones, they will get the best result.展开更多
基金Supported by the Science and Technical Foundation to Hubei University of Technology[2006(5)]
文摘By means of the continuation theorem of the coincidence degree theory,the existence of two periodic solutions of a delayed single species model with feedback regulation and harvest term is obtained.
基金Supported by Nature Science Foundation of Education Department of Henan Province（2010A110023）
文摘In this paper,a multi-point boundary value problems for a three order nonlinear deferential equation is considered.With the help of coincidence theorem due to Mawhin,a existence theorem is obtained.
文摘The training of reading skill is the focal point of college English teaching. Psychological linguistics provides a new point of view for college English teaching. From the aspect of psychological linguistics theory this paper discusses some issues, including how to train students to complete the reading process independently, how to build the schema to achieve integrated discourse comprehension, how to choose the most appropriate reading model, in order to improve the English reading skill and provide some enlightenment for college English reading teaching.
基金Project(2009AA04Z209) supported by the National High Technology Research and Development Program of ChinaProject(R1090674) supported by the Natural Science Foundation of Zhejiang Province,ChinaProject(51075363) supported by the National Natural Science Foundation of China
文摘Based on flexible pneumatic actuator(FPA),bending joint and side-sway joint,a new kind of pneumatic dexterous robot finger was developed.The finger is equipped with one five-component force sensor and four contactless magnetic rotary encoders.Mechanical parts and FPAs are integrated,which reduces the overall size of the finger.Driven by FPA directly,the joint output torque is more accurate and the friction and vibration can be effectively reduced.An improved adaptive genetic algorithm(IAGA) was adopted to solve the inverse kinematics problem of the redundant finger.The statics of the finger was analyzed and the relation between fingertip force and joint torque was built.Finally,the finger force/position control principle was introduced.Tracking experiments of fingertip force/position were carried out.The experimental results show that the fingertip position tracking error is within ±1 mm and the fingertip force tracking error is within ±0.4 N.It is also concluded from the theoretical and experimental results that the finger can be controlled and it has a good application prospect.
基金Supported by the Scientific Research Fund of Zhejiang Province Education Depart-ment(200700190) Supported by the Science Technique Planed Item of Taizhou City(063KY08)Supported by Major Scientific Research Fund of Taizhou University(09ZD08)
文摘In this paper, we study the convergence rate of two-dimensional Baakakov operators with Jacobi-weights and the approximation equivalence theorem is obtained, making use of multivariate decompose skills and results of one-dimensional Baskakov operators.
文摘Foreign language learning is hard work while the study on it is a complicated system engineering. It touches not only the problems of linguistics but those of sociology and culture as well. What is involved is not only the foreign language itself but also the emotional elements. Also it covers the macro plan and strategy along with concrete steps and skills. As the foreign language learners, they must undergo kinds of and series of psychological response. There must be a lot of difficulty, problems, even conflicts in the process of learning. Only when they correctly handle the contradictions, coordinate the relationship, make good use of the positive elements and abandon the negative ones, they will get the best result.
