Based on the information theory,the performance of maneuvering target tracking can be improved by increasing the input information( observation vector).In this paper,the estimations of radial acceleration and radial v...Based on the information theory,the performance of maneuvering target tracking can be improved by increasing the input information( observation vector).In this paper,the estimations of radial acceleration and radial velocity obtained in the signal processing are introduced into the measurement vector by coordinate transformation.In order to solve the problem of high nonlinearity of the radial acceleration,radial velocity and the state vector,a new algorithm of multi-parameter sequential extended Kalman filter( MSEKF) is proposed.The tracking performance of this algorithm is tested and compared with the other tracking algorithms.It is shown that the proposed algorithm outperforms these algorithms in strong and weak maneuvering environments.展开更多
In the early twentieth century, Marxism was propagated into Vietnam through patriotic intellectuals. After the propagation into Vietnam, Marxism not only influenced national liberation movements, but also profoundly a...In the early twentieth century, Marxism was propagated into Vietnam through patriotic intellectuals. After the propagation into Vietnam, Marxism not only influenced national liberation movements, but also profoundly affected scholars, particularly scholars of social science. In fact, many of well-known Vietnamese scholars have relied on Marxism’s theory of social existence and social consciousness, infrastructure and superstructure, practical concept, concept of class struggle, etc. to comment on poetry, history, language, geography, philosophy, etc. In other words, the scholars have applied Marxist methodology to explore and study cultural and social life in Vietnam; and in that way, a generation of Marxist researchers in the field of social sciences has been formed. After the renovation of the country, the Government of Vietnam has implemented its policy of openness and international integration, and scholars have been therefore able to receive many other Western ideals and cultures, and the Marxist methodology was not the only one used in social science research. Consequently, some people expressed their skepticism about the role of Marxist methodology in academic research in Vietnam, even completely denied the historical significance of Marxist methodology to the academia in Vietnam. This article is intended, through Vietnamese Marxist scholars, especially the ones in the field of social sciences prior to 1986 （i.e., prior to the renovation of the country） to demonstrate the historical significance of the Marxist methodology to the Vietnamese academia. It is clear that the penetration of the Marxism and the Marxist methodology into Vietnam have created a revolution in the field of academic research （primarily in the field of social science）. It has promoted academicresearch from conservative toward innovative, from traditional to modern. With the presence of the French colonialism as well as the French culture, the Marxism and the Marxist methodology helped Vietnamese scholars break away from Chinese Confucian scholarship and shift to systematic scholarly studies based on practical bases, scientific bases and modern methods. Although there are still some certain drawbacks, it cannot be denied that the Marxism and the Marxist methodology have played an important role in the formation and development of modern social sciences in Vietnam today.展开更多
基金National Natural Science Foundations of China(Nos.61531020,61471383)
文摘Based on the information theory,the performance of maneuvering target tracking can be improved by increasing the input information( observation vector).In this paper,the estimations of radial acceleration and radial velocity obtained in the signal processing are introduced into the measurement vector by coordinate transformation.In order to solve the problem of high nonlinearity of the radial acceleration,radial velocity and the state vector,a new algorithm of multi-parameter sequential extended Kalman filter( MSEKF) is proposed.The tracking performance of this algorithm is tested and compared with the other tracking algorithms.It is shown that the proposed algorithm outperforms these algorithms in strong and weak maneuvering environments.
文摘In the early twentieth century, Marxism was propagated into Vietnam through patriotic intellectuals. After the propagation into Vietnam, Marxism not only influenced national liberation movements, but also profoundly affected scholars, particularly scholars of social science. In fact, many of well-known Vietnamese scholars have relied on Marxism’s theory of social existence and social consciousness, infrastructure and superstructure, practical concept, concept of class struggle, etc. to comment on poetry, history, language, geography, philosophy, etc. In other words, the scholars have applied Marxist methodology to explore and study cultural and social life in Vietnam; and in that way, a generation of Marxist researchers in the field of social sciences has been formed. After the renovation of the country, the Government of Vietnam has implemented its policy of openness and international integration, and scholars have been therefore able to receive many other Western ideals and cultures, and the Marxist methodology was not the only one used in social science research. Consequently, some people expressed their skepticism about the role of Marxist methodology in academic research in Vietnam, even completely denied the historical significance of Marxist methodology to the academia in Vietnam. This article is intended, through Vietnamese Marxist scholars, especially the ones in the field of social sciences prior to 1986 （i.e., prior to the renovation of the country） to demonstrate the historical significance of the Marxist methodology to the Vietnamese academia. It is clear that the penetration of the Marxism and the Marxist methodology into Vietnam have created a revolution in the field of academic research （primarily in the field of social science）. It has promoted academicresearch from conservative toward innovative, from traditional to modern. With the presence of the French colonialism as well as the French culture, the Marxism and the Marxist methodology helped Vietnamese scholars break away from Chinese Confucian scholarship and shift to systematic scholarly studies based on practical bases, scientific bases and modern methods. Although there are still some certain drawbacks, it cannot be denied that the Marxism and the Marxist methodology have played an important role in the formation and development of modern social sciences in Vietnam today.
