Motion simulator usually appears the phenomenon of false cues and the workspace is limited in the process of washout. The proposed washout algorithm combines fuzzy logic control with the vestibular system to design th...Motion simulator usually appears the phenomenon of false cues and the workspace is limited in the process of washout. The proposed washout algorithm combines fuzzy logic control with the vestibular system to design the tilt coordination fuzzy adaptive filter, in order to minimize the vestibular sensory error below the human perception threshold. Owing to tilt coordination angular velocity limiter, the loss of low-pass acceleration must be compensated by the acceleration transform model. The translational channel decreases the possibility of the workspace beyond limitation and expands the scope of motion platform simulating input acceleration by using third-order filter. The simulation results show that the proposed algorithm can effectively overcome the phase retardation of classical washout algorithm, and then prevent the produce of false cues, decrease the displacement of motion platform simultaneously; in addition, white Gaussian noise simulates large variations in acceleration. The proposed washout algorithm can have maximal extreme value of acceleration and accurate simulating performance in general. It also proves that the proposed washout algorithm has a strong adaptability and reliability, which can effectively improve the dynamic fidelity for motion simulator.展开更多
The new method of intellectual development among children being investigated represents a trilogy of mind, whose main thinking operation is the logical operation of comparison. The method was created due to Aristotle...The new method of intellectual development among children being investigated represents a trilogy of mind, whose main thinking operation is the logical operation of comparison. The method was created due to Aristotle＇s understanding of philosophy as ＂the science about the first reasons and origins＂ of cognition--types of opposition which should be the beginning of the surrounding world＇s cognition at school. As they were discovered and set in a natural line of comparative notions, the main Plato＇s plan was fulfilled to reduce all particular laws to the general and to withdraw all particular laws from the general one （Plato 1993）. As a result, we are talking about the building of stepwise transmission from one general notion to another more general notion that identifies the diversity of natural and social differences. As a result, it turned out to be possible to divide the whole thinking process into three related logical parts, each of which is determined by the advantageous usage of three types of cognitive means： （1） Reasonable thinking is the thinking with the help of classification notions on the basis of relations of ＂abstract identity＂ and ＂abstract difference＂, which determine the law of noncontradiction： either A, or not A; （2） Mental concrete-general metaphysical thinking is the thinking with the help of classification, quantitative, and comparative notions on the basis of the relation of ＂corresponding＂ and variety of mathematical and physical abstractions of different complexity being studied at school; and （3） Mental concrete-general dialectical thinking is the thinking with the help of classification and comparative notions on the basis of relation of ＂opposition＂ which allows to cognize natural and social processes. In addition to the generally accepted study of reasonable and mental thinking among schoolchildren with the help of concrete sciences, the new philosophical method is an effective means of advanced development of mental thinking among children, which makes for the holistic perception of the surrounding world by schoolchildren.展开更多
DNA computing, currently a hot research field in information processing, has the advantages of parallelism, low energy consumption, and high storability, therefore, it has been applied to a variety of complicated comp...DNA computing, currently a hot research field in information processing, has the advantages of parallelism, low energy consumption, and high storability, therefore, it has been applied to a variety of complicated computational problems. The emerging field of DNA nanotechnology has also developed quickly; within it, the method of DNA strand displacement has drawn great attention because it is self-induced, sensitive, accurate, and operationally simple. This article summarizes five aspects of the recent developments of DNA-strand displacement in DNA computing:(1) cascading circuits;(2) catalyzed reaction;(3) logic computation;(4) DNA computing on surfaces; and(5) logic computing based on nanoparticles guided by strand displacement. The applications and mechanisms of strand displacement in DNA computing are discussed and possible future developments are presented.展开更多
基金Funded by the National Natural Science Foundation of China(U1233107)Civil Aviation Science and Technology Innovation Project of China(MHRD20140210)
文摘Motion simulator usually appears the phenomenon of false cues and the workspace is limited in the process of washout. The proposed washout algorithm combines fuzzy logic control with the vestibular system to design the tilt coordination fuzzy adaptive filter, in order to minimize the vestibular sensory error below the human perception threshold. Owing to tilt coordination angular velocity limiter, the loss of low-pass acceleration must be compensated by the acceleration transform model. The translational channel decreases the possibility of the workspace beyond limitation and expands the scope of motion platform simulating input acceleration by using third-order filter. The simulation results show that the proposed algorithm can effectively overcome the phase retardation of classical washout algorithm, and then prevent the produce of false cues, decrease the displacement of motion platform simultaneously; in addition, white Gaussian noise simulates large variations in acceleration. The proposed washout algorithm can have maximal extreme value of acceleration and accurate simulating performance in general. It also proves that the proposed washout algorithm has a strong adaptability and reliability, which can effectively improve the dynamic fidelity for motion simulator.
文摘The new method of intellectual development among children being investigated represents a trilogy of mind, whose main thinking operation is the logical operation of comparison. The method was created due to Aristotle＇s understanding of philosophy as ＂the science about the first reasons and origins＂ of cognition--types of opposition which should be the beginning of the surrounding world＇s cognition at school. As they were discovered and set in a natural line of comparative notions, the main Plato＇s plan was fulfilled to reduce all particular laws to the general and to withdraw all particular laws from the general one （Plato 1993）. As a result, we are talking about the building of stepwise transmission from one general notion to another more general notion that identifies the diversity of natural and social differences. As a result, it turned out to be possible to divide the whole thinking process into three related logical parts, each of which is determined by the advantageous usage of three types of cognitive means： （1） Reasonable thinking is the thinking with the help of classification notions on the basis of relations of ＂abstract identity＂ and ＂abstract difference＂, which determine the law of noncontradiction： either A, or not A; （2） Mental concrete-general metaphysical thinking is the thinking with the help of classification, quantitative, and comparative notions on the basis of the relation of ＂corresponding＂ and variety of mathematical and physical abstractions of different complexity being studied at school; and （3） Mental concrete-general dialectical thinking is the thinking with the help of classification and comparative notions on the basis of relation of ＂opposition＂ which allows to cognize natural and social processes. In addition to the generally accepted study of reasonable and mental thinking among schoolchildren with the help of concrete sciences, the new philosophical method is an effective means of advanced development of mental thinking among children, which makes for the holistic perception of the surrounding world by schoolchildren.
基金supported by the National Natural Science Foundation of China(61272246,61370099,61272161,61127005,61133010,61425002,61320106005)the Graduate Education in Shaanxi Normal University Innovation Fund
文摘DNA computing, currently a hot research field in information processing, has the advantages of parallelism, low energy consumption, and high storability, therefore, it has been applied to a variety of complicated computational problems. The emerging field of DNA nanotechnology has also developed quickly; within it, the method of DNA strand displacement has drawn great attention because it is self-induced, sensitive, accurate, and operationally simple. This article summarizes five aspects of the recent developments of DNA-strand displacement in DNA computing:(1) cascading circuits;(2) catalyzed reaction;(3) logic computation;(4) DNA computing on surfaces; and(5) logic computing based on nanoparticles guided by strand displacement. The applications and mechanisms of strand displacement in DNA computing are discussed and possible future developments are presented.
