城市设计规划对城市发展的意义

城市发展的好与坏与城市的设计规划有着巨大的联系,这是不容置疑的,发展好的城市的规划设计就是要比其他城市的规划设计更加的合理。但是在这个城市遍地的时代,不是所以的城市都发展的很好,这主要就是城市的设计规划的不同所导致的,譬如:城市中的道路;建筑;楼房的建设;环境的创建等,这些东西的不同直接导致了两个城市的发展结果截然不同,这就说明城市规划对城市的发展是有很大的意义的。     

关于LISA数据库中关于云计算文献的定量分析

科学技术的发展现在一个国家的发展中显的极为的重要,对于科学技术的研究是体现一个国家的综合国力的表现,本文主要针对LISA数据库收录的有关云计算机的文献进行的研究,通过这些的研究分析来关注它的起源,发展历程极其研究的最新动态。并且在一定的范围内探讨出在以后的研究道路上的目标以及我们应该注意的问题。     

关于对局域网建设与维护的分析

网络的规划及计算机的维护工作主要涉及到了计算机的软硬件的管理及维护的工作还有网络的相应的规划和管理的工作,此外还有中心机房的规划和布置的相关的内容以及计算机的外部设备相应的维护及管理的工作等内容。本文就局域网的建设和维护工作做了很好地分析,并针对其中的问题提出了很好地建议。     

浅谈我国数字卫星电视的发展

我国的数字卫星电视经过了一个漫长的发展才达到了目前的程度,有效的提高了我国人民的能够收看到的电视品质,本文从我国早期的的卫星电视与我国卫星电视的数字化过程对我国的数字卫星电视的发展做出了一定的论述。     

宁波大学体育馆扩声系统设计

对于宁波大学的体育馆的扩声系统的设计进行了详细的介绍.考虑到体育馆内部的空间大,混响时间长的建筑结构的缺陷.在吊顶上采用了大量的吸声体解决了混响时间过长的问题.同时,采用集中式的阵列扬声器的布局模式解决了声压级的覆盖以及对语言清晰度要求的矛盾.同时在系统中采用了大量的数字音频处理器设备简化了系统的结构,提高了系统的可靠性.     

历史的真实还原:「孔子」幕后特效评析

2010年的国产鸿篇巨制<孔子>,以强大的演员阵容,扣人心弦的故事情节,具有和谐思想的人性解读,再现出中国二千五百年前的春秋争霸以及一位"去圣"的凡人颠沛流离的晚年生活.视听震撼之外,是灵魂深处的碰撞:天下大同的圣人思想、仙境岸边的子见老子、虔诚执着的门徒弟子,灰飞烟灭的红颜知己,颠沛流离的晚年生活、皓首苍颜的衰老终回……从人心的最深处不断敲打的人性的灵魂.     

谈工程测量技术存在的问题及对策分析

随着人们建筑工程的质量的要求的不断的提高,建筑工程的质量的检测技术在也在不断的发展和受到人们越来越多的重视。在建筑施工的过程中的建筑工程的质量的控制和监督是影响工程的整体质量的一个关键的因素。在建筑的工程质量检测的过程中要对工程的工期和工程建设质量检测人员的素质等的因素进行严格的控制和管理,以保证工程的质量的合格。     

虚拟现实技术在虚拟校园中的应用研究

随着时代的飞速发展,科技的不断进步,人们越来越意识到虚拟现实的重要作用,校园是培养人才的地方,如何给学生更好地学习环境,更好的保障学生在上学时的安全,更加有效地提高学生学习的效率,都是可以通过虚拟现实的技术得以实现的。人们通过虚拟现实的技术,更好的更直观了解校园中一些具体的情况,获取相应的信息,以往仅仅只是对校园环境的模拟已经无法满足人们的需求,人们需要教学,教务,校园生活三者相结合的一种虚拟校园的出现,而目前的科学技术已经足以实现这样的效果,真实性,互动性,有着特有的情节是虚拟技术的一个很重要的表现形式。     

保障多媒体业务QoS的跨层无线资源管理

传统的无线通信系统空中接口的高层协议采用简单的分层结构,每层进行独立的设计和操作,各层间的接口是静态的。这种设计方法简化了网络设计,具有很好的通用性,但是无线通信系统的信道是随着时间、空间和频率而随机变化的,同时用户的多媒体业务和整个网络状态也是动态的、变化的,而传统的分层协议结构不能很好的适应无线通信的特点,不能保证用户多媒体业务的QoS（服务质量）,传输的可靠性和提高无线资源的利用率,本文针对此问题阐述了跨层无线资源管理的思想,跨层设计能够根据用户多媒体业务的QoS和信道的随机变化特性等,跨过层间功能进行优化,更好的保证了不同多媒体业务的QoS,利用各个用户间信道的独立随机变化的特性,最大化系统的传输效率。     

数据信息于无线传输之下的采集和控制

传统的传输数据的方式是应用有线的方式。传统的数据信息的传输方式存在一定的弊端,在这些弊端的存在以及时代的发展之下,我们进入了无线的时代。数据信息于无线传输的采集与控制的方式具有速度快,噪音小、效率高等优点,给我们的生活带来了巨大的便利。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

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.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

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.