吉林新立油田CO_2非混相驱模拟研究

利用专门建成的高压线性物理模拟装置，以吉林新立油田为原型进行了一系列ＣＯ２非混相驱模拟实验。实验内容包括ＣＯ２注入率、ＣＯ２段塞大小、交替注方式、气水比、水气同注及注ＣＯ２时机等因素对驱油效果的影响。研究结果表明：影响ＣＯ２非混相驱效果的最关键因素是ＣＯ２段塞大小和油层压力。注入率对驱替效果也有较大的影响，交替注入和气水比的影响是次要的。实验结果还表明：对新立油田而言，在较低的含油饱和度下，ＣＯ２非混相驱仍能有效地提高原油采收率。     

Design of Magnetic RF Inductor in CMOS

Traditional planar inductors in Radio Frequency (RF) Integrated Circuits (ICs) are plagued by large areas, low quality, and low frequencies. This paper describes a magnetic-based CMOS-compatible RF in-ductor. Magnetic-core inductors with various ferrite-filled structures, spiral structures, and magnetic material permeabilities were simulated to show that this inductor greatly improves the inductance by up to 97% and quality factor by 18.6% over a multi-GHz frequency range. The results indicate that the inductor is a very promising and viable solution to realize miniature, high quality, and high frequency on-chip inductors for high-end RF ICs.     

10MW 高温堆热气导管振动分析

根据１０ＭＷ高温气冷堆热气导管处于内外两股方向相反气流同时作用的具体结构特点，针对实际设计工况，建立了其流动诱发振动的理论模型，即两端简支，受内外两股方向相反气流同时作用的单管振动模型；给出了相应的数学描述和简捷求解方法；通过计算获得了其振动频率随流速的变化关系，和不同流动工况下，失稳时的临界流速，及相应的稳定性图。分析结果表明，热气导管的设计工况完全处于稳定区内，即其在设计工况下运行时，不会产生大振幅的流致振动。     

Charge Pump for LCD Driver Used in Cell Phone

IntroductionDue to the fast growth of the mobilecommunication market,the competition in thisbusiness is very intense.The display still remainsas one of the most importantparts requiring driverICs with better performance and lower cost.Sincethe DC- DC converter is one of the most importantcomponents for achieving the requirement,thispaper aims at designing a sophisticated voltageconverter.　The most important advantage of charge pumpsas a voltage converter is their high efficiency andamenabi…     

Optimal Scheduling Method in MIMO WLAN with Distributed Coordination Function

This paper addresses the optimal number of simultaneous data transmissions that maximize the system throughput in an MIMO WLAN. To facilitate simultaneous packet transmissions, both transceivers have to exchange preambles to calculate the channel state information. This exchange is combined with the RTS (request to send)/CTS (clear to send) handshake which is used to contend for the channel in WLANs. This study presents an expression for the optimal number of simultaneous data transmissions under the distri...     

Ruin Probability in Linear Time Series Model

This paper analyzes a continuous time risk model with a linear model used to model the claim process. The time is discretized stochastically using the times when claims occur, using Doob‘s stopping time theorem and martingale inequalities to obtain expressions for the ruin probability as well as both exponential and non-exponential upper bounds for the ruin probability for an infinite time horizon. Numerical results are included to illustrate the accuracy of the non-exponential bound.     

Investigation on Dynamic Character of Thermohydraulic TestSystem

介绍了用阶跃响应法研究热工水力学实验系统的动态特性。给出了热工水力学实验系统不同工况下的动态特性参数。在诸如系统辨识、核反馈实验等含有动态过程的模拟实验中，这些参数是必须考虑的。该实验是在ＨＲＴＬ热工水力学实验系统上进行的，系统的动态响应是用阶跃信号响应描述的。实验结果为其他动态过程实验提供了基础数据。     

具有良好运行特性的新型池窑结构设计

传统池窑中玻璃液的流动是自然对流控制下的混合对流，流型靠温度制度建立，稳定性差，对控制的要求高。为了改善玻璃熔制质量，剖析了传统池赛结构与运行特性的缺陷，针对性地提出了一种能克服其缺陷的新型池赛结构。用数值模拟对新池窑和传统池窑的运行特性进行了分析比较。这种新型池窑将澄清部由原来的深池改为浅槽，从而可用强迫流动取代原来的混合对流组织玻璃液澄清，因而具有稳定性好，易控制等优点。     

交通运输建设项目综合评价方法及其投入产出模型

对交通运输建设项目进行可行性研究，应考虑交通运输建设项目所带来的地区经济效益，提出了利用投入产出方法建立的地区经济效益的模型。根据该模型与数学规划方法，建立了改进的地区间投入产出优化模型。并以京津地区为实例，定量计算了京津塘高速公路和北京至天津第三条铁路的地区经济效益，得到了有参考价值的结果。计算结果说明，所提出的综合评价方法和模型是可行的、有效的。     

Microring-Assisted Coupling Between Dissimilar Waveguides

The use of microring resonators to assist in the evanescent field coupling between dissimilar waveguides is proposed and analyzed. Theoretical analysis based on the coupled mode theory and nu-merical example show that complete cross power transfers can be obtained near the microring resonances. Applications of the device include power dividers, low-power thermo-optic or electro-optic switches, and modulators.