一个快速的字符串模式匹配改进算法

在分析了BM算法以及一些重要的改进算法的基础上，提出了一种新的改进算法——BMG算法。该算法结合了BMH算法和BMHS算法的优点，同时考虑了字符串后一位字母的唯一性，提高了最大位移m＋1的出现概率，有效地加快了匹配速度。BMG算法已经通过实验测试，并证明是有效的，测试结果表明该算法比BM、BMH、BMHS算法有更好的性能。     

卫星导航信号长码快速直接捕获算法研究

以对较低信噪比情况下的长码快速捕获算法进行了研究，分析比较了多种快速捕获算法，研究了一种基于FFT（快速傅立叶变换）的重叠平均块操作快速捕获算法，提出了该算法的工程实现方法，通过Matlab仿真分析了算法的捕获峰值、余量及捕获概率，并通过实验硬件平台分析了算法捕获时间。仿真实验表明该算法具有更快的捕获时间、更高的捕获概率。     

自适应峰度最优自聚焦算法

研究了一种适用于合成孔径雷达的自聚焦算法，称自适应峰度最优自聚焦算法（AKOAA）。该算法能有效解决对比度最优算法的局部极值问题，且具有原理简单、收敛快、计算量小、适应性强等特点。该文着重研究了AKOAA的原理及实现方法，最后通过对实际的L_SAR数据成像得到了较为理想的图像，这既证明了该算法的有效性，也说明了该算法具有重要实际应用价值。     

一种用于优化VLC/WiFi异构网络资源的动态比例公平算法

为了提高可见光通信（VLC）/Wi Fi异构网络中的资源利用率，提出了一种动态比例公平（PF）算法。该算法通过引入补偿因子α来优化用户的优先级。首先，理论推导了VLC/Wi Fi异构网络的吞吐量、资源利用率和公平性指数等关键性能指标；然后，使用Mat l ab软件进行仿真，构建了一个VLC/Wi Fi异构网络系统；最后，将动态PF算法、PF算法以及最大载干比（Max C/I）算法在吞吐量、资源利用率、公平性以及访问延迟概率等方面的性能进行了对比。仿真结果表明：动态PF算法的吞吐量高于PF算法，并且远高于Max C/I算法；这3种算法的资源利用率均较高，均不低于0.96；动态PF算法的公平性指数约为0.97，优于其它2种算法，并且访问延迟概率较低。     

盲均衡算法的发展综述

本章引用大量科技文献，阐述了盲均衡技术的发展。从算法的角度，着重介绍了常量模板算法、基于高阶谱的算法、基于神经网络算法等算法的发展情况，并对其优缺点进行了比较。同时，提出了新的值得解决的问题。     

几种适用于水声信道的常模类盲均衡算法研究

对比研究了3种常模类盲均衡算法在水声信道均衡中的收敛性能，这些算法包括传统的常数模算法、归一化常数模算法和解相关常数模算法。通过仿真对各算法性能进行了分析。仿真结果表明，在算法剩余均方误差非常接近的情况下，解相关常数模算法和归一化常数模算法快于传统的常数模算法。     

基于人工鱼群算法的IIR数字滤波器设计

将人工鱼群算法（AFSA）用于IIR数字滤波器设计，建立了相应的优化模型，给出了简化的人工鱼群算法及其实现步骤。最后，将该算法用于低通、带通IIR数字滤波器的设计，并与粒子群算法进行了比较。仿真结果证明了AFSA的有效性，并且具有算法灵活、简单，全局收敛性好。收敛速度快的优点。     

WSN中负载均衡能量有效的路由算法研究

在PHGASIS建链方法的基础上提出了一种改进的建链方法；在此基础上提出了一种基于双层链结构并由基站集中控制的负载均衡、能量有效的路由算法（LBEERA），此算法充分利用了簇状路由算法和链状路由算法的优点．LBEERA算法将网络划分为多个簇，每个簇的节点组成一条低层链，每条链的链头节点形成一条高层链．仿真试验发现，相对于LHACH算法和PHGASIS算法，LBEERA算法增加了网络生存时间，减少了包传输时延．     

基于改进野草算法的推荐对象建模技术研究

为了提高个性化推荐系统中模型描述的准确性，提出了一种改进的入侵野草优化算法。该算法将野草算法和混合遗传算法有机地结合，旨在克服传统野草算法过旱收敛、易于陷入局部优化的不足。最后，计算机仿真结果表明了所提出的算法明显优于其他常见的建模算法。     

基于粒子群融合遗传算法的阵列天线方向图综合

<正>基本粒子群算法应用于阵列天线波束赋形时，优化算法容易陷入局部收敛，无法准确获得所需方向图，针对这一问题提出了一种粒子群融合遗传算法的改进优化算法。该算法在基本粒子群算法的基础上，引入了遗传算法中的交叉、变异机制，并结合精英粒子选择策略，增加了粒子种群的多样性，增强了算法的全局寻优能力，有效地提高了算法全局搜索的效率。仿真结果表明，将该方法应用于阵列天线波束赋形时能够得到预期的目标方向图，算法的优化效率高、优化效果好，具有较强的稳健性。     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

GaAsSb/InAlAs PA DHBTs Grown by Production MBE

The epi material growth of GaAsSb based DHBTs with InAlAs emitters are investigated using a 4 × 100mm multi-wafer production Riber 49 MBE reactor fully equipped with real-time in-situ sensors including an absorption band edge spectroscope and an optical-based flux monitor. The state-of-the-art hole mobilities are obtained from 100nm thick carbon-doped GaAsSb. A Sb composition variation of less than ± 0.1 atomic percent across a 4 × 100mm platen configuration has been achieved. The large area InAlAs/GaAsSb/InP DHBT device demonstrates excellent DC characteristics,such as BVCEO＞6V and a DC current gain of 45 at 1kA/cm2 for an emitter size of 50μm × 50μm. The devices have a 40nm thick GaAsSb base with p-doping of 4. 5 × 1019cm-3 . Devices with an emitter size of 4μm × 30μm have a current gain variation less than 2% across the fully processed 100mm wafer. ft and fmax are over 50GHz,with a power efficiency of 50% ,which are comparable to standard power GaAs HBT results. These results demonstrate the potential application of GaAsSb/InP DHBT for power amplifiers and the feasibility of multi-wafer MBE for mass production of GaAsSb-based HBTs.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.