DV-Hop localization algorithm is an important location algorithm for Wireless Sensor Networks.To solve the problem of large error on specific network,an improved algorithm about selecting shortest hop beacon node and computing the average hop distance is proposed.The simulation results show that it is useful for reducing error rate of localization, and it is even better for complex network.
With the rapid development of the current information age, the society’s demand for computer professionals is also increasing. However, the reform of computer teaching in higher vocational colleges needs to focus on social needs as the starting point to implement corresponding teaching work. At the same time, the development of computer teaching mode needs to take into account the needs of students’ individual development and formulate corresponding teaching plans for students, to fully respect students’ personalities and talents to carry out corresponding computer teaching, and cultivate more outstanding computer professionals for the society. This article briefly explores and analyzes the current computer majors in higher vocational colleges, the key points encountered in the teaching reform and the implementation strategies, in order to improve the teaching quality of the corresponding higher vocational colleges.
Aiming at the difficulty and long cycle of R&D in mathematical modeling and aerodynamic parameters analysis during the process of loitering munition's preliminary design and verification,the speediness prototype and integrated modeling method based on X-Plane is proposed.The loitering munition's characteristics is analyzed.Meanwhile,the operation mechanisms of various simulation methods are summarized.The principle of X-Plane is also analyzed.Speediness prototype is realized through modeling,which is independent of the mathematical model and aerodynamic parameters.The airfoil and blade design are improved and special controls are implemented,such as mixing,parachute and folding wing.The aircraft design and controller performance are verified by the software in loop (SIL)simulation.Research result indicates that early speediness prototype design and verification of various aircrafts can be realized via the proposed method.It has the advantages of short development cycle and good visual effect.Moreover,it can be significant reference for researchers of aircraft design and control algorithm.
