Change of acoustic nonlinearity parameter B/ A in the process of deterioration of the raw milk is experimentally studied by using the finite amplitude insert substitution method. 本文利用有限振幅声波插入取代法实验研究了牛奶变质过程中非线性参量B/A的变化。
The main idea of the finite difference method is as follows: We consider the discrete difference equation with the finite alphas as approximate substitution for the differential equation with the continuous variant and boundary conditions. 有限差分方法的基本思想是用离散的,只含有有限个未知数的差分方程去近似代替连续变量的微分方程及边界条件,并把相应的差分方程解作为微分方程的近似解。
In this paper, author makes use of symplectic geometry over finite field to construct Cartesian authentication code, presents a method of its construction, and at the same time, computes its size parameters and successful probability of impersonation attack and substitution attack. 本文利用有限域上辛几何构作了Cartesian认证码,给出了它的一个构造方法,计算了其容量参数、模仿攻击和替换攻击的成功概率。
Two constructions of Cartesian authentication codes from orthogonal geometry over finite field with characteristic 2 are given in this paper. Their size parameters and their probabilities of successful impersonation attack and of successful substitution attack are also computed. 利用有限域上偶特征正交几何构作了两个Cartesian认证码,并计算了它们的参数.还按均匀概率分布选取编码规则,计算了模仿攻击成功概率PI和替换攻击成功概率PS。
These formulas are derived from a system of finite difference equations representing the relation between the currents in successive sections of the multiply-grounded shielding conductors, and the subsequent substitution of terminal conditions corresponding to the particular circuit arrangement under consideration. 这些公式的推导,是用有限差分方程组代表多点接地的屏蔽导线的相邻两档之间电流的关系,再代入相应的边界条件而解出。
Use the finite amplitude insert substitution method to measure the acoustic nonlinear parameter B/ A, and do the correction and the uncertainty analysis. 利用有限振幅插入取代法对非线性声参量B/A进行测量,修正及不确定度分析,并研究了温度、声强以及频率对非线性声参量B/A的影响。