This paper introduces some theories concerning language transfer, such as behaviorist views and cognitive views, and the relationship between language transfer and contrastive and error analysis, interlanguage, fossil...This paper introduces some theories concerning language transfer, such as behaviorist views and cognitive views, and the relationship between language transfer and contrastive and error analysis, interlanguage, fossilization, universial grammar. It is believed that incorporating the concept of language transfer in English teaching may facilitate students’ learning of the language.展开更多
This paper proposes a new three-dimensional optimal guidance law for impact time control with seeker’s Field-of-View(FOV) constraint to intercept a stationary target. The proposed guidance law is devised in conjuncti...This paper proposes a new three-dimensional optimal guidance law for impact time control with seeker’s Field-of-View(FOV) constraint to intercept a stationary target. The proposed guidance law is devised in conjunction with the concept of biased Proportional Navigation Guidance(PNG). The guidance law developed leverages a nonlinear function to ensure the boundedness of velocity lead angle to cater to the seeker’s FOV limit. It is proven that the impact time error is nullified in a finite-time under the proposed method. Additionally, the optimality of the biased command is theoretically analyzed. Numerical simulations confirm the superiority of the proposed method and validate the analytic findings.展开更多
文摘This paper introduces some theories concerning language transfer, such as behaviorist views and cognitive views, and the relationship between language transfer and contrastive and error analysis, interlanguage, fossilization, universial grammar. It is believed that incorporating the concept of language transfer in English teaching may facilitate students’ learning of the language.
文摘This paper proposes a new three-dimensional optimal guidance law for impact time control with seeker’s Field-of-View(FOV) constraint to intercept a stationary target. The proposed guidance law is devised in conjunction with the concept of biased Proportional Navigation Guidance(PNG). The guidance law developed leverages a nonlinear function to ensure the boundedness of velocity lead angle to cater to the seeker’s FOV limit. It is proven that the impact time error is nullified in a finite-time under the proposed method. Additionally, the optimality of the biased command is theoretically analyzed. Numerical simulations confirm the superiority of the proposed method and validate the analytic findings.
