HTML5中ExtJS和Web SQL Database的使用

HTML5中ExtJ S和Web SQL Database的使用,Ext JS用于在客户端创建丰富多彩的web应用程序界面,使得我们的手机应用更加的绚丽多彩。而Web SQL Database则是利用HTML5的本地存储在虚拟的数据库操作,多次向服务器发出数据请求,这将大大优化前端界面的操作效率。我们的客户端设计力求创造最好的用户体验,"操作简单,功能实用"是我们的核心理念。     

HTML5与CSS3的设计模式

HTML5和CSS3同为Web前端最新的开发技术，HTML5和CSS3完成前端开发是一个非常繁琐、需要投入很多精力与耐心的工作过程。本文通过对HTML5和CSS3设计模式进行总结归纳，得出7条设计模式，通过对这7条设计模式的有效组合应用，可以有效提高前端开发的工作效率。     

面向移动终端的HTML5应用运行环境研究

新一代Web标准HTML5,已成为未来移动互联网应用平台的通用技术标准,基于HTML5的移动Web应用正逐渐成为新兴的应用形式,HTML5应用运行环境作为移动Web应用的重要载体,在Web应用生态系统中具有核心位置。首先分析了移动Web应用的现状和可能的发展趋势,其次研究了HTML5应用运行环境的功能架构,并分析了相关的关键技术,最终提出了面向移动终端的HTML5应用运行环境技术方案。     

基于HTML5的移动Web应用浅析

随着移动互联网的快速发展和智能终端的普及,基于HTML5的移动Web应用已经成为移动互联网应用新的发展趋势。文章从HTML5和移动Web应用结合的角度出发,从HTML5应用技术、应用开发平台、终端侧运行环境等多个方面进行论述,并对基于HTML5的移动Web应用发展进行展望。     

HTML5助力Web应用发展实践

Web App的发展离不开HTML5和移动互联网,HTML5和Web App将会是移动互联网的未来。在Web App的技术体系中包含着大量的HTML5技术知识范畴,通过介绍UC浏览器的Web App开放平台,包括:应用商店、游戏中心、浏览器开发者版、开发者交流社区等内容,说明了Web App是HTML5最好的实践方向。     

HTML5 Web Worker技术及应用研究

文章主要讨论网页前端多线程技术,首先分析了传统多线程技术原理和应用场景,然后分析了HTML5规范中Web Worker的技术原理、产生的必要性和具体应用场景,通过对比分析得出了以下结论:网页前端的工作线程和传统的多线程本质上有很大差别,它更适合由于服务器或者客户端长时间计算导致网页前端处于阻塞状态的工作场景。     

HTML5技术应用现状与发展趋势研究

HTML5作为当下最为热门的Web技术,已经在互联网行业得到了普遍应用,基于HTML5的浏览器和Web引擎为用户带来了感知体验上的巨大飞跃,并将Web应用带入了一个新的发展阶段,文章将对HTML5技术进行简要介绍,分析和比较目前的应用情况,探讨现阶段存在的主要问题,继而展望HTML5技术应用的发展趋势。     

HTML5技术在移动互联网中的应用

HTML5技术即将成为新一代Web标准,也会成为未来移动互联网Web应用的关键技术。文章通过对HTML5新的关键特性进行分析,研究基于HTML5的移动Web应用相较于本地应用的优势,并从移动浏览器的兼容程度出发,分析了混合型应用(Hybrid AppS)在当前阶段的重要性。     

Web标准与HTML5重点技术探讨

目前网络上应用范围最广、最主要的构成网页文档的计算机语言为HTML,10年前开发的HTML版本在表达和应用上已经无法满足科技快速发展情况下开发人员和使用者的需求。为了适应Web的迅速发展和应用需求,HTML5应运而生。通过对HTML5的发展历程、特点和应用的探索,并与现行的Web技术进行比较,分析HTML5技术在网络通信、数据存储、网页绘图等方面的优势。     

HTML5对网页开发与移动应用的影响

HTML5为网页技术与移动通讯的应用带来变化,它将成为下一个普及的Web标准,提高了网络技术的发展,将Web发展成为一个成熟的应用平台。通过对移动应用现状和机遇的分析,并对HTML5在网页开发与移动通讯中的应用进行分析,提出了HTML5将重塑移动互联网,是统一下一代互联网的关键。     

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.     

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.     

Noise character analysis and the restraint of self-pulsation laser diodes

We calculate the Langevin noise sources of self-pulsation laser diodes, analyze the effects of active region noise and saturable-absorption region noise on the power fluctuation as well as period fluctuation, and propose a novel method to restrain the noise effects. A visible SIMULINK model is established to simulate the system, The results indicate that the effects of noise in absorption region can be ignored; that with the increase of DC injecting current, the noise effects enhance power jitter, and nevertheless, the period jitter is decreased; and that with external sinusoidal current modulating the self-pulsation laser diode, the noise-induced power jitter and period jitter can be suppressed greatly. This work is valuable for clock recovery in all-optical network.     

High-quality single-crystal CdSe nanoribbons and their optical properties

Large-scale synthesis of single-crystal CdSe nanoribbons is achieved by a modified thermal evaporation method, in which two-step-thermal-evaporation is used to control CdSe sources＇ evaporation. The synthesized CdSe nanoribbons are usually several micrometers in width, 50 nm in thickness, and tens to several hundred micrometers in length. Studies have shown that high-quality CdSe nanoribbons with regular shapes can be obtained by this method. Room-temperature photolumines-cence indicates that the lasing emission at 710 nm has been observed under optical pumping （266 nm） at power densities of 25-153 kW/cm^2. The full width half maximum （FWHM） of the lasing mode is 0.67 nm     

Propagation of hermite-cosh-gaussian beams passing through ABCD optical system with an annular aperture

By using the expansion of the aperture function into a finte sum of complex Gaussian functions, the corresponding analytical expressions of Hermite-cosh-Gaussian beams passing through annular apertured paraxially and symmetrically optical systems written in terms of ABCD matrix were derived, and they could reduce to the cases with squared aperture. In a similar way, the corresponding analytical expressions of cosh-Gaussian beams through annular apertured ABCD matrix were also given. The method could save more calculation time than that by using the diffraction integral formula directly.     

Influence of polarization extinction ratio on distributed polarization coupling detection

Distributed polarization coupling in polarization-maintaining fibers can be detected by using a white light Michelson interferometer. This technique usually requires that only one polarization mode is excited. However, in practical measurement, the injection polarization direction could not be exactly aligned to one of the principal axes of the PMF, so the influence of the polarization extinction ratio should be considered. Based on the polarization coupling theory, the influence of the incident polarization extinction on the measurement result is evaluated and analyzed, and a method for distributed polarization coupling detection is developed when both two orthogonal eigenmodes are excited.     

Call for Papers

正Communications—VLSI Researches and industries of telecommunications have been growing rapidly in the last 20 years and will keep their high growing pace in the next decade.The involved researches and developments cover mobile communications,highway and last-mile broadband communication,domain specific communications,and emerging D2D M2M communications.Radio communication steps into its