查询词典 exponential distribution

The results show that: 1. In the selected four funds, the theoretical risk of three funds is less than that of the actual portfolio fund, and only one fund's risk is higher than that of the actual portfolio fund; 2. It's hard to determine which combination is better between the single exponential model and Markowits'model;.3. Allowing short-selling is better than disallowing short-selling and the optimal solution can not be found under the condition of disallowing short-selling.

结果发现：(1)4只基金中有3只基金的理论模型的风险小于基金实际组合的风险，1只基金的理论模型的风险大于基金实际组合的风险；(2)单指数模型组合与Markowitz模型组合熟优熟劣难以定论；(3)允许卖空组合优于非允许卖空组合，且非允许卖空使得理论模型有时找不到最优解。

With respect to the exponential computation complexity of the optimal multi-user detection in CDMA systems,a sub-optimal multi-user detector based on evolution strategy for exonerating crossover operation and lowing computation complexity is proposed.

1引言CDMA通信及其关键技术是目前国内外移动通信研究的热点，但是CDMA通信系统中存在着固有的多址干扰，极大地限制了多址用户数或同样用户数条件下的通信质量。

And put forward to construction cost will be calculated based on bill valuation, average society cost and the component cost .The second is the text make use of fuzzing mathematics and exponential smoothing technology,set up the mathematical model of engineering cost.

本文首先从工程成本基本概念入手，分析了工程成本的构成，为准确预测工程成本提供了基础，明确提出应以社会平均成本和企业个别成本进行投标阶段的成本估算。

On the foundation of standard UKF algorithm, the ratio of the theoretical value to the practical ones of the innovation's covariance was taken as the input of the FLAC to reduce the dependency of FLAC on the filter model, the generality of the fussy adaptive UKF algorithm was intensified; In the procedure of adjusting the measurement noise's covariance dynamically, the adjusted range could be amplified or minified to different extent by setting the exponential adjusting parameter, so the adjusting velocity and precision of the algorithm was controlled.

在标准的非线性UKF算法基础上，以残差的实际方差与理论方差的比值作为FLAC的输入，使FLAC对滤波模型的依赖性减弱，强化了模糊自适应UKF方法的通用性；在对量测噪声方差阵进行动态调节的过程中，通过设置指数调节参数可不同程度地放大或缩小调节的幅度，使算法的调节速度和精度得到控制。

Unaware that the creature feeds on light and energy, and moves with exponential speed, the army prepares to deploy its most sinister of all weapons - a nuclear bomb.

军队并不知道这种生物靠光和热为生，还打算用原子弹来消灭它，如此一来结果将不堪设想。

Multiple linear stepwise regression estimation and exponential smoothing estimation of time serial are used to obtain the estimating models of the 12 omening indices.

用多元线性回归预测和时间序列指数平滑方法预测，建立了12项单指标的预测模型。

These systems are inherited from an era predating the exponential growth of the Internet and were never envisioned as being scaleable to today's required levels.

创建完成后， Postmark 对文件池进行一系列的事务操作，根据从实际应用中统计的结果，设定每一个事务包括一次创建或删除操作和一次读或添加操作，在有些情况下

Compared with Mg2+,the physiological cofactor,Mn2+has a slight activation effect on GTP-hydrolysis activity.The kobs of the exponential phase of the experiment curve of Mn2+is two-times higher than that of Mg2+under saturated condition.And the velocity of the steady state is lower than that of Mg2+.

相对于生理条件下的辅基Mg2+而言，Mn2+对Cdc42Hs酶活力有所激活，表现在饱和浓度时，实验曲线指数项的表观速率常数kobs有2倍左右的提高，而其稳态反应速度要低于Mg2+。

Investigation shows, in electronic government preparation is spent (the website prepares to spend, infrastructure prepares to spend reach manpower resource to prepare to spend) exponential respect, with respect to the whole world 5 continent, europe unplugs with 0.649 component of force the head prepares; to be in before the rank in 35 countries, european country occupied 70%; to be in before the rank in 10 countries, european country was occupied 60%, especially boreal Europe the Three Kingdoms it is before undertaking the whole thing 3 armour more, gradually hasten is become worldwide inside of electronic government trend bring the person that run newly.

调查显示，在电子政府预备度(网站预备度、基础设施预备度及人力资源预备度)指数方面，就全球五大洲而言，欧洲以0.649分力拔头筹；在排名前35名国家中，欧洲国家占了70%；在排名前10名国家中，欧洲国家占了60%，尤其是北欧三国更是包揽了前三甲，渐趋成为世界范围内电子政府潮流的新引跑者。

A multi-distance measurements method is employed in this paper. A single parameter fitting method and a double parameters (reduced scattering coefficient and amplitude factor) fitting method on the basis of the least square Newton fitting algorithm is used to derive the optical parameters respectively. For the finite-thickness homogenous tissue, it can be concluded that the rest terms in expressions of diffusion reflectance and transmittance for the corresponding tissue geometries that subtract the exponential term contained source-detector distance depend on the detected position weakly.

在多程测量的基础上，使用单参数最小二乘牛顿法拟合方法和双参数（约化散射系数、幅度因子）最小二乘牛顿法拟合方法，得到有限厚均匀组织的反射率分布和透射率分布公式中除去包含测量位置的指数项的其它部分对测量位置皆具有弱依赖性的结论，并对拟合结果进行了分析讨论；而对于有限厚平板状双层组织，可根据对反射测量结果及透射测量结果进行拟合所得的约化散射系数间的差异及常数因子的正负判断双层组织的可能结构分布。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。