DEA评价方法在超稠油生产经营中的应用探讨

超稠油的生产工艺非常复杂，影响油井效益的因素相对较多，因此对油井的评价就要评价各类有限资源投入的利用效果，查明积极因素和消极因素及其对经济指标的影响程度，促进经营管理的改善，寻求有效利用有限人力、物力、财力等资源的途径，实现资源的优化配置。本文通过使用DEA模型可对单井效益进行评价，对单井效益进行排队，对规模效益进行分类，对生产各投入因素进行投影分析，研究弱DEA、非DEA有效的原因，寻求对油井优化成本、提高效益的改进方案。     

钻井井喷失控井喷流出口速度预测方法研究

失控井喷流出口速度、喷口内压力、喷层产量都是井喷失控处理方案设计、作业施工中重要的基础数据。由于井喷失控井井口环境条件复杂，井喷失控后无法在井口安装测量仪表及在高速喷流中放入参照物，不能直接获取以上数据。文章利用地质、钻井过程获得的地层物性参数和气体动力学方程，探讨井喷失控井天然气喷流在不同井筒流动尺寸及组合的喷流速度预测模型，可应用薄剪切模型或RNG修正的k-ε模型定量描述速度场、温度场、浓度场颁。为井喷失控井处理方案设计、施工作业提供基础数据。     

数字电路中电源电压瞬间下降的成因及改进

通过分析数字集成芯片多输出中电源电压瞬间下降的原因,对常规驱动电路结构进行改进。改进后单输出电路的峰值电流降为原来的2/3,再通过优化版图的电源布线,能有效防止电源电压下降,使芯片正常稳定地工作。     

柴油蜡晶的理论形态预测与显微实际形态的比较

采用BFDH模型和AE模型预测柴油中蜡晶的理论形态，与通过相衬光学显微镜在冷环境平台上观察柴油蜡晶在低温下析出的实际形态。以及加入低温流动性改进剂T1804的柴油蜡晶形态进行比较研究。以十八烷晶体和二十三烷晶体作为柴油蜡晶中偶数正构烷烃和奇数正构烷烃的模型化合物，得到它们的晶体理论形态为六面体薄片状晶体。不同降温速率下得到的蜡晶的实际形态与大小均不同。快速降温条件下得到的晶体形态主要为六边形、菱形和其它少数不规则多边形薄片状集合体；慢速降温条件下得到的柴油蜡晶的形态比较完整，为六边形片状，与通过BFDH和AE模型得到的十八烷即偶数正构烷烃的形态比较接近。柴油加T1804后，快速降温时，出现更多细小的无规则晶体，且很快聚集成片状晶体；慢速降温时，出现晶体的数目要多于未加剂柴油，形状不规则，且尺寸小于未加剂柴油。     

浅谈东深供水改造工程的设计监理工作

施工图阶段设计监理工作的内容归纳起来主要是对设计质量进行控制.依据<水利建设工程招标、施工图阶段设计监理试行规定>,其具体工作内容仅限于设计成果的合法性和安全性,没有充分发挥设计监理作用,对施工图阶段设计质量的理解是不全面的.施工图阶段的设计质量不仅仅是提交合法和安全的图纸,而且图纸的提交时限性、可实施性及经济性也应是考核设计质量的重要组成部分,为此东深供水改造工程的设计监理工作内容确定为"五项控制"和"两项权利",全面地对施工图阶段的设计质量进行控制.     

Science in High Magnetic Fields: What Could Be Learned?

High magnetic fields are one of the most powerful tools available to scientists for the study, modification and control of matter. This includes the knowledge on correlations effects, interaction mechanisms, structural information and understanding of mesoscopic effects. In this context, a review of recent scientific achievements at the Grenoble High Magnetic Laboratory is given to illustrate, on specific examples, the power of the Magnetic Field probe.     

运行电站爆破震动控制研究

结合大渡河龚咀水电站下游河床整治爆破开挖拓宽，重点研究了爆破震动对运行电站机组及其仪表的影响，探讨了爆破震动安全判据和控制标准，用了若干实际工程采用的经验指标进行对比分析，所得结论意见可供同类工程作为爆震安全控制参考。     

The Precedence Effect in Three Species of Birds (Melopsittacus undulatus, Serinus canaria, and Taeniopygia guttata).

The perceived locations of paired auditory images, simulating direct sounds and their echoes, have been recently studied in budgerigars (Melopsittacus undulatus; M. L. Dent & R. J. Dooling, 2003a, 2003b). In this article, the authors extend those experiments to include measurements of the precedence effect using a discrimination paradigm in two additional bird species: canaries (Serinus canaria) and zebra finches (Taeniopygia guttata). Although time courses of summing localization, localization dominance, and echo thresholds were similar across all species, budgerigars had slightly higher overall levels of discrimination. The results from these experiments add further support that the precedence effect in birds is similar to that found in other animals and that the ability to suppress echoes that might degrade localization and auditory object perception may be a general property of the vertebrate auditory system. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

高功率脉冲水中放电的应用及其发展

首先介绍了高功率脉冲水下放电的机理，然后综合论述了其应用和研究的状况，从较为成熟的脉冲水处理技术到医疗领域的ESWL应用技术，以及在脉冲电场食品杀菌和水下目标探测方面的最新发展和研究，最后指出了高功率脉冲电技术应用前景以及进行更系统和深入研究的必要性。     

Optimization of Selective Epitaxial Growth of Silicon in LPCVD

Selective epitaxial growth (SEG) of silicon has attracted considerable attention for its good electrical properties and advantages in building microstructures in high‐density devices. However, SEG problems, such as an unclear process window, selectivity loss, and nonuniformity have often made application difficult. In our study, we derived processing diagrams for SEG from thermodynamics on gas‐phase reactions so that we could predict the SEG process zone for low pressure chemical vapor deposition. In addition, with the help of both the concept of the effective supersaturation ratio and three kinds of E‐beam patterns, we evaluated and controlled selectivity loss and nonuniformity in SEG, which is affected by the loading effect. To optimize the SEG process, we propose two practical methods: One deals with cleaning the wafer, and the other involves inserting dummy active patterns into the wide insulator to prevent the silicon from nucleating.