查询词典 S curve

Secondly,concerning Kolmogorov model and generalized Kolmogorov model with variable harvesting rate,this paper utilizes Dulac function to judge the existence of the close path curve,Bendixson cycle region to judge the direction of path curve,and constructs Lyapunov function to judge the global stability,in order to fit the general models.

对于三维种群模型，讨论了一类具有功能性反应的三种群模型在具有收获率的条件下的定性性质。

The precipitation efficacity showed multi-index curve relationship with the soil water content and precipitation in the base period and the evaporation efficacity showed index curve relationship with the soil water content in the base period.

降水效力与基期土壤含水量、降水量呈多元指数曲线关系，蒸发效力与基期土壤含水量呈指数曲线关系。

This paper studies the influence of country economy guideline in power demand. According to identifying the main economy and society factors in affecting the change of Fujian power demand, the power demand forecast model is proposed. And the demand curve models fitting for diversified users are built by researching the influence of electrovalence to power demand.The influence of demand side management in load characteristic of Fujian power system is analysed.Used the arithmetic of modifying the history load curve, this paper forecast the changing and development trend of Fujian load characteristic.

本文研究了国民经济指标对电力需求的影响，通过识别影响福建省电力需求变化的主要经济社会因素，建立电力需求预测模型；研究了电价变化对电力需求的影响，对各类用户建立适合各自特点的需求曲线模型；分析了需求侧管理对福建电网负荷特性的影响，采用历史负荷曲线修正法，预测了福建电网负荷特性的变化发展趋势。

In using the elliptic curve cryptosystem, it is important to select a secure elliptic curve.

在使用椭圆曲线密码系统时，挑选一个安全性高的椭圆曲线是很重要的。

The speed of point addition on elliptic curve is critical in elliptic curve application cryptosystem design based on FPGA device.

提高椭圆曲线上点加运算的速度在整个基于FPGA设计的椭圆曲线密码应用系统实现中极为关键。

The mathematics principles of elliptic curve cryptosystem are systematically explained, including the addition rule for elliptic curve point defined over finite field.

系统研究了椭圆曲线密码系统的数学原理，研究分析了椭圆曲线密码体制的点加、倍点和点乘运算。

In the process of elliptic curve digital signature verification, the elliptic curve scalar multiplication and the elliptic point addition, which are under different coordinates, need to be calculated twice and once, respectively. With operands allocation, the two operations in the thesis are using the shared registers and arithmetic units as well as the same modular inverse process. No extra resource is needed for the introduction of point addition. Hence the resource utilization efficiency is optimized.

论文对这两种不同坐标系下的计算进行了寄存器和运算单元的统一调度，使它们的求逆运算共用同样的流程，减小了控制状态机的复杂度，并且在实现标量乘法的基础上，没有增加额外的运算单元或寄存器，点加运算的所有计算资源均和标量乘法公用，最大限度的提高了资源利用率。

A new method of finding the points on an elliptic curve by Maple is supplied; Maple is applied to the addition operation, the scalar product operation and the method of seeking the order of a basic point on the elliptic curve are proposed; the applications of Maple on ECC including encryption and decryption are supplied.

利用Maple编程求出椭圆曲线上有理点，用Maple实现椭圆曲线上两点的加法、点的数乘运算及求某个基点阶数的算法，利用Maple实现椭圆曲线密码体制的加密及解密。相比C语言，Maple语言更接近于平时说话的语法。同时，Maple语言可以方便地转化成C语言。

Its security depends not only on the elliptic curve discrete logarithms but also on the choice of the elliptic curve and its system.

其安全性不仅依赖于椭圆曲线离散对数的分解难度，而且依赖于椭圆曲线的选取和椭圆曲线密码体制。

This paper does an empirical study to Phillips curve with data of China based on introduction and analysis of their shapes and policy significance of the curve.

本文在介绍分析菲利普斯曲线三种形态及其政策含义的基础上，使用中国的相关数据对其进行验证。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。