平均地

In this paper, effects of atmospheric factors to Ka-Band earth-space links are analyzed, and the total fade distribution function is derived. With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

摘要本文分析了各气象因素对Ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁预测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

Results indicate that the ensemble precipitation probability forecasts made by the three methods above-mentioned all can give accurate estimation of center and region of the precipitation, and the "Rank" is superior to the "Average" and "Correlation" for performing better in forecasting the areas, intensity and boundary of precipitation but the other two expand improper areas.

结果表明：用上述3种方法制作的多模式短期集合概率预报都能对降水落区及中心做出较准确的预报，但平均法和相关法易使降水落区虚假放大，Rank法则能较好地刻画降水落区边界及强度，其概率预报效果优于平均法和相关法结果。

The JHU researchers prospectively examined changes in fibrosis stage between paired liver biopsies in 67 coinfected patients. Of the 67 subjects, six were excluded due to cirrhosis on the first biopsy. The median age of group was 44 years, and 75% of the subjects were men. A total of 86% had CD4+ cell counts of less than 200 cells/mm3, and the same number of subjects were receiving antiretroviral therapy. Twenty-seven percent of the patients abused alcohol. The median time between biopsies was 2.84 years (interquartile range, 2.05 - 3.41 years).

JHU研究人员前瞻性地检验67位共同感染病患成对肝脏切片的纤维化严重度变化，在67位受试者中，6位因在第1次肝脏切片时就已经是肝硬化而被排除；受试者平均年龄为44岁，而且75%的受试者为男性；86%患者的CD4+细胞计数低於200 cellsmm3，而且同样数目的受试者接受抗反转录病毒药物治疗；27位病患有酗酒的习惯；切片之间的平均时间为2.84年（四分位数中距为2.05－3.41年）。

In the western province of Nyanza, one of the most populous parts of the country, edging Lake Victoria, a family's average landholding is 0.8 hectares and the average number of children between seven and eight; the death rate from AIDS has been particularly high.

西部省份恩岩札是肯尼亚人口最多的省份之一，它临近维多利亚大湖。在那里，一个家庭平均的土地所有为0.8公顷（不足2英亩），而一个家庭的平均小孩数为7－8个，因此由艾滋病引起的死亡率在该地区是特别地高。

Moreover, simulation results show that it has a better performance in terms of the probability density functions of the envelope and phase, the level crossing rate, and the average fade duration than the previous methods.

仿真结果表明，改进后的方法生成的复随机过程的幅度、相位的概率密度函数及平均电平通过率、平均衰落持续时间能更好地逼近理论参考值。

Based on investigating the short and intermittent structural plane, surrounding rockmass of the huge underground powerhouse in Three Gorge has been divided into five statistical similar areas according to its characteristic of rockmass structure by applying structure plane network simulation. Distributed characteristic of structural plane has been studied and based on it mechanics macrocharacteristic has been studied:(1) It is the first time that based on the result of structural plane network simulation rockmass quality of every structure area has been studied with applying blurred information optimum seeking technique and be compared with and RQD method. The result indicated that it has better effect to evaluate rock quality with blurred information optimum seeking technique.(2) It is the first time that the interrelated relationship of the result of in-suit rockmass deformation test and fractal characteristic of structure on test point has been applied to determine rockmass deformation parameter. The question of evaluating deformation parameters of engineering rockmass has been solved.(3) Anisotropy strength parameters have been determined by applying shear zones simulating method. The result indicated that there are different strength parameters in every structural area, after comparing the result of Fast Lagranian Analysis in continua number simulation method with that of method of weighted mean according to continuity. The result indicated that when a suitable reduction coefficient is been considered rockmass strength parameters can be simply and fast determined with method of weighted mean according to continuity where there is not enough test result.(4) Damage characteristic has been studied based on analysis fractal characteristic of structural plane network by applying fractal-damage coupling method. It is the first time that the concept of damage degree has been set up to evaluate rockmass quality according to the biggest principal damage.

通过对短小、断续性结构面统计特征的研究，将地下厂房区划分为五个岩体结构统计均质区，应用结构面网络模拟技术研究了各个岩体结构均质区结构面的发育分布特征，并以此为基础对岩体宏观力学特性进行了深入研究：(1)首次通过在结构面网络模拟计算结果的基础上，应用模糊信息优化技术研究了厂房区各个岩体结构分区的岩体质量并与岩体基本质量指标研究法、岩体质量指标RQD值研究法作了对比，结果表明以结构面网络模拟结果为基础，应用模糊信息优化技术进行岩体质量评价能够取得很好的效果，解决了工程岩体质量的定量评价问题；(2)首次通过对已有的现场大型岩体变形试验结果的分析及相应试验点岩体结构分形特征的研究，建立了结构面分布的分形维数和岩体变形指标间的相关关系，并首次应用这种相关关系根据结构面网络模拟及分形维数计算结果确定了缺少试验结果的地下厂房各工程部位的岩体变形指标而且应用于围岩稳定性计算，解决了工程岩体宏观变形参数的评价问题；(3)应用在结构面模拟网络图上模拟岩体剪切破坏带的方法，得出了岩体在不同方向上的强度参数，结果表明岩体的强度特性与结构面的发育方向和程度有着明显的关系，各个岩体结构均质区具有不同的强度参数；同时还通过应用拉格朗日差分法对岩体强度指标的数值分析并与按连通率加权平均计算法对比表明，按连通率加权平均计算法在考虑合理的折减系数情况下，可以简单快速地对缺少现场大型试验结果的具体工程部位实现岩体强度指标的估计，通过以上研究解决了工程岩体抗剪强度参数的评价问题；(4)通过结构面网络分形维数的研究，应用分形损伤耦合分析方法，研究了厂房区岩体的损伤特征，并首次引入"损伤度"的概念，建立了应用最大主损伤评价岩体质量的指标体系。

E forecasting precision with the method of moving average can be improved by the optimal moving step length n.

为选用移动平均法中最优移动步长n，利用计算机的计算功能，设计了一种较为精确地确定移动平均法中最优移动步长n的方法。

The forecasting precision with the method of moving average can be improved by the optimalmoving step length n.

为选用移动平均法中最优移动步长n，利用计算机的计算功能，设计了一种较为精确地确定移动平均法中最优移动步长n的方法。

Moving average method is one of time series forecasting method, if time series have no apparent tendency moving, using moving average method can accurately reflect actual situation.

移动平均法是一种时间序列预测法，当时间序列没有明显的趋势变动时，使用移动平均就能够准确地反映实际情况。

The ground states properties of Ne-isotopes were calculated with Relativistic mean field theory. Compared with the experimental datas, its discovered that the nucleus properties chang regularly with the changes of neutron number when the proton number is even. The results proved indirectly that even nucleus has no direct influenced on another kind of nucleus. Besides, the applicability of Relativistic mean field theory in this region was tested.

用相对论平均场理论计算了Ne同位素的基态性质，并和实验比较，发现当质子是偶数时，核的性质有规律地随中子数的变化而变化，由此间接证明了偶数核子对另一类核子无直接影响；同时，也检验了相对论平均场理论在该区域的适用性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。