体育馆短线阵列扬声器系统EASE仿真

高校体育馆实质上是一种多功能大厅。为满足其多功能的声学要求,采用短线阵列扬声器系统来提升体育馆内声音质量,并采用声学设计软件EASE对体育馆声学环境进行建模,调整和预测线阵列扬声器布置方案,并对设计方案进行声学特性分析,从而得出最优化电声系统布置方案,为指导厅堂扩声工程施工提供相应的技术数据。     

大型体育馆建筑声学设计标准探讨

国家体育场馆建设行业标准已对建筑声学指标做了明确规定,在对南京奥体中心体育馆进行声学设计时,发现现行体育馆声学标准还有值得商榷的地方,特别是对大型或特大型体育馆。结合体育馆的使用功能、建筑结构,分析了体育馆声学设计的特点、目的、方法。指出:体育馆声学设计的概念应该是建筑声学和扩声系统设计的统一体;体育馆不存在传统最佳混响时间的概念,体育馆“最佳混响”就是混响时间和扩声系统结合达到的最佳清晰度概念;现行体育馆建筑声学标准中混响时间可以放宽,其意义在于扩声系统和声学装修的优化结合,从而节约国家相关建设投资。     

计算机技术在体育馆中的管理网络构建与应用体会

体育馆中的管理网络的构建,计算机技术发挥了重要的作用。文章通过对计算机技术的运用进行分析,主要探讨了计算机技术在体育馆中管理网络系统目标及规模;计算机技术在体育馆管理网络的构建及功能;计算机技术在体育馆中管理网络的应用效益这三个方面的内容。     

体育馆声学设计的实质——语言清晰度设计

指明了体育馆声学设计主要是建声系统和扩声系统的语言清晰度设计.从体育馆建声设计标准和体育馆扩声系统指标要求进行论述.引用奥组委对最大声压级的具体要求.     

十一运济南赛区光传输系统

十一届全运会济南赛区共有19个场馆，承担了全运会开幕式、闭幕式和23个体育项目的比赛任务。济南赛区的比赛场馆主要有几个场馆群山东省体育中心、济南奥体中心、山东省训练中心，还有位于济南周边分散的一些场馆，如：历城体育馆、章丘体育馆、黄亭体育馆、山东交通学院体育馆、历城赛马场等。     

高效成品吸声材料的应用

体育馆的建声多年来是声学界比较棘手的问题之一,主要是因为体育馆的容积比较大,尤其是近几年在馆内普遍采用网架结构,使人均容积变得更大;同时供声学装修的面积有限,这给体育馆建筑声学的设计和吸声材料的选用带来一定难度。面对这些问题,笔者结合海军工程大学体育馆的声学装修工程作初步探讨。     

学校体育馆向社会开放的有效运行机制研究

文章对学校体育馆向社会开放的问题进行了讨论,并且阐述了体育馆对外开放的重要意义,同时针对学校体育馆对外开放的问题提出有效措施。     

六届全运会体育馆音响工程

本文就体育馆音响工程的设计,设备使用进行了分析,根据对六届全运会主要体育馆的扩声系统调查研究,对体育馆的扩声部份问题进行了扼要讨论。     

综合新闻

李毅中考察部分高校奥运筹备工作情况7月29日,工业和信息化部部长李毅中、党组成员陈小筑在部有关司局领导的陪同下前往北京航空航天大学和北京理工大学,现场考察两所高校的奥运场馆运行管理和比赛项目筹备情况。李毅中部长听取了北京航空航天大学、北京理工大学关于学校发展建设和奥运赛事筹备等情况的汇报,认真考察了校园环境综合整治情况和奥运主体育馆、运动员训练馆等设施建设筹备进展等情况,详细了解了奥运比赛场馆安保指挥系统、无线电干扰检测、     

体育馆扩声系统设计中的几个问题

近几年来,国内和援外的一些体育馆相继建成。在体育馆的设计中声学设计是重要设计内容之一,体育馆声学设计的内容应包括室内音质、噪声控制、扩声系统三个方面,设计时三者要密切配合,才能得到满意的音质效果。本文主要介绍有关扩声系统设计中的几个问题。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

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.     

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.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

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.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.