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Our research work concentrates on the severe communication circumstances, for example, spatially correlative and time-frequency selective fading channel, and focuses on the design of codec for space-time architecture and the utilizing of linear precoding technique especially on the multiuser scenario trying to improve the system performance to combate various fading.

论文首先基于已有空时相关MIMO信道模型，分析给出了联合空时互相关函数解析表达式，并推导给出了空时分组编码传输方案理论成对错误概率表达式。

Right shifting a signed quantity will fill with sign bits ("arithmatic shift") on some machines and with 0-bits("logical shift") on others.

当右移无符号量时，左边空出的位用0填空；当右移有符号量时，左边空出的位或用符号位填空或用0填充

Firstly, the stope vacancy was monitored using CMS, taking cavity measured data as foundation, cavity three-dimensional model of the stope opening was created using Surpac software and gain the stope three-dimensional configuration and the actual boundary accurately. Then, the stope designed model and ore-rock interface digital terrain model were established according to the stope design material. Finally, using ore-rock interface DTM to cut cavity model or through Boolean calculation among the models, ore remains, mining total volume, mullock, backfilling, pure ore and dilution rate of stope N3-4 were calculated accurately, thus the large-scale stope mining index visible calculation was realized effectively.

采用CMS探测三维采场空区，以空区实测数据为基础运用Surpac构建采空区三维可视化模型，获取采场空区的三维形态和实际边界；运用采场设计资料，建立采场回采设计模型及矿岩边界模型，通过模型间的布尔运算，计算出采场存留矿量、回采总体积、采下废石量、采下充填体量、采下纯矿石量、回采总量及回采贫化率等，从而有效地实现了大规模采场回采指标的可视化计算。

Everyday besides have a meal to sleep even if get online, resemble of course I can give the door on the weekend, like to go out very much before me journey but time is closer now, hardly what sky goes out, bar also did not go, KTV gets collect to just fall to poll, the most place that goes possibly is cinema and odeum, also often a person goes, feel to be done from personal pretty laugh, nevertheless a desire wants to issue Sichuan namely now, because oneself aided financially a few children to read in a few years, this year Sichuan elementary school of a child there graduated quickly, I want to see him namely, but according to present condition for, do not know to be able to be met really give time to go for nothing.

天天除了吃饭睡觉就是上网，当然像周末我会出一下门，我以前很喜欢出门旅行但是现在时间比较紧，几乎没什么空出去，酒吧也不去了，KTV得凑到人头才去下，可能去的最多的地方就是电影院和音乐厅，也经常是一个人去的，觉得自己蛮搞笑的，不过现在有个愿望就是想去下四川，因为几年里自己资助了几个孩子读书，今年四川那边一个孩子小学就快毕业了，我就是想去看下他，可按照现在的状态来说，不知道会不会真会空出时间来过去了。

The instantaneous SNRof the receiver of STBC over raying fading is illustrated, based on this, the closed impression of STBC's symbol error rate is educed with M-PSK and M-QAM modulation and also presents the numerical results.

给出在瑞利衰落信道下正交空时分组码瞬时接收信噪比的一般表达式，在此基础上推导出正交空时分组码在M-PSK和M-QAM调制下误符号率的闭式表达式，并给出数值分析结果。

The target strength term R〓 in A-T model is derived based on the quasi-static spherically symmetric cavity expansion theory.

四。基于静态球形空腔膨胀理论，考虑脆性材料在高速冲击作用下的破碎，求出了空腔膨胀压力，即靶体阻力R〓，为合理确定修正的流体动力学理论模型中靶体强度参数提供了合理的方法，求出的侵彻深度与试验结果符合较好。

Through 2D axial symmetrical and 3D scarfed reversal nozzle calculating, the main flowfield characters were given, and compared with the experiment data for validation. Then, the program was given, which can well predict the performance of the scarfed reversal nozzle. In this paper, the flowfields of open cavities with different structures and different parameters were calculated. Some new, full and more reasonable mechanism interprets were given. We think that the essential cause of pressure oscillatory is coherent effect of wave, eddy and cavity structure, but the procedure is different with different cavity structure, it can not use single procedure to described.

通过对二维轴对称和三维斜切反喷管的计算分析，本文给出了流场的主要特征，并采用实验数据进行了验证，形成了分析斜切反喷管可靠的应用方法；本文通过对不同结构形式、不同参数的二维、三维非定常超声速开式空腔流动进行的计算分析，提出了较为全面、合理的空腔压力振荡循环机理的解释，本文认为压力脉动本质上是波、涡以及结构之间相互的干扰和耦合，但干扰的具体过程随空腔结构的不同差别较大，不能采用单一的规律进行描述。

For the security market with restricted borrowing and short sale unallowed, Options pricing formula are advanced, and the relation between them and Black-Scholes Options pricing formula is discussed. The essence of Black-Scholes Options pricing formula is set forth. To the security market with restricted borrowing and short sale unallowed, stock returns risk pricing formula is advanced and the demonstration analysis of China security market is provided. From the demonstration analysis, arbitrage exists in China security market, which can be applied to explain the riddle of a great deal of China bank money and hot money swarming into China security market.

本文在B-S期权定价的基础上，直接利用股票本身的参数推导出股票收益率风险的定价公式；对不允许融资和卖空的证券市场，给出了看涨期权和看跌期权的定价公式，并讨论了他们和相应B-S期权定价公式之间的关系；对B-S期权定价公式的本质做出了阐述；对不允许融资和卖空的证券市场，给出了股票收益率风险的定义；利用股票收益率风险的新定义，对中国证券市场进行实证分析，得出中国证券市场存在套利，解释了2006年和2007年中国大量银行资金和国外热钱流向中国股市之谜。

Thus, It becomes very hard for Ling to strike upward to assist Shin while she is going to be attacked by the teeth of sun crow's rods—Ling, yet, knows Shin will be alright by and large so she just gives priority to protect herself by verifying the direction of attacks with hearing.

皇无空冷笑一声，伸出翅膀飞到空中，同时金乌在皇无空身后更高处使出日晖结界，这麼一来，金灵要仰攻协助童心就非常困难，还会受到金乌尖刺攻击—不过金灵知道童心基本上可以无碍，就以听音辨器之术自保为主，不久发现尖刺伤不了金灵的金乌放缓了攻势，金灵便抽空眯眼朝上望去，看见皇无空臂上闪闪发亮的金属支架，突然灵机一动

Preparing rotary steel cage comprising one rotating frame, one steel cage and one driving mechanism; and 2. setting the rotary steel cage in the tail of haydite calcining rotary kiln and introducing hot tail gas through the cavity channel of the steel cage, rotating the steel cage, loading raw haydite pellet into the steel cage through the upper inlet for drying through contact with hot tail gas, and discharging the stoved haydite pellet through the lower outlet.

一种淤泥陶粒生产的预烘干工艺，其特征在于它包括如下步骤：1准备回转钢笼：回转钢笼由旋转架(1)、钢笼(2)、旋转驱动机构构成；2将回转钢笼置于陶粒煅烧回转窑的尾部，将回转窑通风所产生的热尾气由钢笼(2)低端口导入钢笼(2)的空腔通道中；启动回转钢笼的旋转驱动机，旋转驱动机驱动旋转架(1)旋转，带动钢笼(2)旋转；待预烘干的陶粒生料球从钢笼(2)的高端口进入钢笼(2)的空腔通道中，陶粒生料球在钢笼(2)的空腔通道内翻转时与由钢笼(2)低端口导入的热尾气充分接触，从而迅速烘干水分；烘干后的陶粒生料球从钢笼(2)低端口排出。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。