基于分场景的WCDMA室内分布系统规划优化研究分析

针对WCMDA室内分布系统不同场景存在的网络质量问题,通过话务量、MR覆盖、导频污染、容量、网络故障等方面对室分WCMDA网络现状进行多维度的评估分析,创新建立基于MR数据分析的分场景室内分布优化评估体系,有效解决了室内深度覆盖网络问题,实现了室分WCDMA网络质量和用户感知的同步提升。     

Sensitivity Analysis of Interfacial Tension Predictions for Hydrocarbon Fluids

The interfacial tension (IFT) of hydrocarbon fluids is commonly predicted by either the parachor method or the scaling law. The methods require equilibrium liquid and vapor phase composition and density. An equation of state would normally be required if experimental values are not available. However, the computation of density for simple hydrocarbons and reservoir fluids, despite the important advances achieved by cubic equations of state, still remains a weak link in these types of calculations. Thus, there exists a need to investigate the qualitative and quantitative effects, of such inaccuracies in the density, on IFT predictions. Moreover, the study presented in this work would be useful in reservoir engineering and enhanced oil recovery calculations. The results presented in this work indicate that the methods are highly sensitive to the inaccuracies in the density of both the liquid and the vapor phases. An error of around 10% in the liquid or the vapor density can result in an error of up to 200% in the estimated IFT. Two binary and one ternary mixture for which measured data on IFT, composition and density is reported in the literature form the basis of this study.     

Electrochemical aspects of new materials and technologies in microelectronics

Major scaling issues, which need to be addressed to continue scaling according to Moore’s law, include increase of transistor leakage due to use of thin gate oxide (about 1 nm limit for SiO₂), power (reaching 100 W/cm²) and RC delay (dielectric constant limit is 1 for air and Cu resistivity increases with scaling down the feature sizes). Integration of new materials and technologies will allow us to continue scaling and improve device performance. Examples of new materials include high-k dielectrics and strained silicon in the frond end of wafer processing, low-k carbon-doped oxide and electroplated copper in the back end of wafer processing as well as electroplated bumps, high thermal conductivity interface, heat sink and heat spreader materials in packaging. Electrochemical technologies will play an increasingly important role in silicon technology due to low cost, use of self-assembly processing and self-aligned growth ability. New electrochemical technologies in silicon processing include copper electroplating (replaced Al interconnect to reduce RC delay and increase reliability), bump electroplating (replaced wire bonding to allow increased I/O and improve reliability), and porous silicon for silicon on isolator fabrication (to reduce transistor leakage). Copper electroplating allows a low R, an excellent gap fill capability and superior materials properties with (111) textured Cu films and large grain size, and a stable and controlled process.     

超电大复杂目标RCS缩比模型预估方法

本文提出用缩比模型计算电大目标雷达散射截面（RCS）的理论。通过复杂目标近远场电磁散射理论模型的分析得到，目标的雷达截面和目标的几何尺寸及工作波长有关系。当电尺寸相同时，目标雷达散射截面和其几何尺寸的平方成正比，缩比模型计算既适用于近场，也适用于远场。     

406～920nm的绝对光谱响应高准确度标度

描述美国国家标准与技术研究院所建立的４０６￣９２０ｎｍ绝对光谱响应标度，该标度完全是建立在探测器测量基础上的，并可溯源到ＮＩＳＴ高准确度低温辐射计。硅光电二极管光吸收探测器被用来将光功率测量由ＨＡＣＲ传递到进行日常校准的单色仪装置。传递也包括建立硅光电二极管光吸收探测器的量子效率模型，最后给出了这些测量为基础的ＮＩＳＴ现有能力的简单介绍。     

克拉玛依油田—区火山岩油藏油层伤害及解除

本文从分析克拉玛依油田一区石炭系火山岩油藏开发过程中的种种失误入手,结合油藏的物性特征,对油层所受的伤害作了评价,并提出了一套比较可行的解除油层伤害的措施。     

自调整比例因子Fuzzy控制器控制工业锅炉燃烧过程

本文提出自调整比例因子Fuzzy控制器对工业锅炉燃烧过程控制.Fuzzy控制器由 SC-841工业控制机实现.实际运行效果良好.     

在用碱的化学驱油中硅铝垢的生成：Ⅱ碱与岩芯组分的成垢机理和性能

分别用X光衍射法和原子发射光谱法考察了固相与碱作用过程中固相中垢的生成和液相中硅、铝离子浓度的变化。研究结果指出，碱使固相中的硅、铝转入液相中，在温度、压力和组成合适的条件下生成铝硅酸盐结晶，晶粒逐渐长大而析出成垢。固相组成不同，生成的垢不同。蒙脱土，辽河和胜利岩芯与NaOH生成高硅垢。Na2CO3与辽河和胜利岩芯的成垢趋势很弱。在化学驱油中选用Na2CO3为碱剂是合适的。     

正交加劲柱形壳自由振动的结构相似性分析

采用相似理论对自振正交加劲柱形壳进行分析,提出了其相似的必要条件,即相似率。结构建模中采用了Donnell非线性应变-位移关系曲线和Smearing理论。然后采用虚功原理分析加劲壳体的自由振动。在使用相似理论对推导的公式进行无量纲化后提出了相似率的概念。采用不同的算例从数值和试验角度论证了相似率的有效性。结果验证了推导公式的有效性。