Basketball shooting technique is the core technology. The shooting angle, basket entering angle, ball＇s rotation, aiming at point, exerting strength cooperatively with the whole body, and flicking the ball using inde...Basketball shooting technique is the core technology. The shooting angle, basket entering angle, ball＇s rotation, aiming at point, exerting strength cooperatively with the whole body, and flicking the ball using index finger before it leaves from hand are the important factors to decide if the shooting techniques are reasonable and the successful shooting rate is high or not. In this paper, the theory of biomechanics is analyzed around basketball spin on the role of shooting, shooting aiming point selection diversity, difference and its impact on investment and basketball shooting rate.展开更多
I present a new protocol for three-party quantum secure direct communication （QSDC） with a set of ordered M Einstein-Podolsky-Rosen （EPR） pairs. In the scheme, by performing two unitary operations and Bell state m...I present a new protocol for three-party quantum secure direct communication （QSDC） with a set of ordered M Einstein-Podolsky-Rosen （EPR） pairs. In the scheme, by performing two unitary operations and Bell state measurements, it is shown that the three legitimate parties can exchange their respective secret message simultaneously. Then I modify it for an experimentally feasible and secure quantum sealed-bid auction （QSBD） protocol. Furthermore, I also analyze th^ecurity of the protocol, and the scheme is proven to be secure against the intercept-and-resend attack, the disturbancb attack and the entangled-and-measure attack.展开更多
文摘Basketball shooting technique is the core technology. The shooting angle, basket entering angle, ball＇s rotation, aiming at point, exerting strength cooperatively with the whole body, and flicking the ball using index finger before it leaves from hand are the important factors to decide if the shooting techniques are reasonable and the successful shooting rate is high or not. In this paper, the theory of biomechanics is analyzed around basketball spin on the role of shooting, shooting aiming point selection diversity, difference and its impact on investment and basketball shooting rate.
基金Supported by the 211 Project of Anhui University under Grant No.2009QN028B
文摘I present a new protocol for three-party quantum secure direct communication （QSDC） with a set of ordered M Einstein-Podolsky-Rosen （EPR） pairs. In the scheme, by performing two unitary operations and Bell state measurements, it is shown that the three legitimate parties can exchange their respective secret message simultaneously. Then I modify it for an experimentally feasible and secure quantum sealed-bid auction （QSBD） protocol. Furthermore, I also analyze th^ecurity of the protocol, and the scheme is proven to be secure against the intercept-and-resend attack, the disturbancb attack and the entangled-and-measure attack.
