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欣赏指挥是件乐事,境中之妙,足以一醉,听指挥,听得深,可听出作品,乐队,指挥的风格,也可听出指挥的性格,修养,灵感,类型和理念,看指挥,看得深,可看出指挥与乐队合作默契与否,也可看出指挥手上的功夫,千姿百态,各有所长,听出心声,看出风格,这是领悟指挥艺术的妙处。1999年12月,日本TOSHIBA EMI制作发行的这套DVD《排练中的指挥大师》(TOBW-3503-06),原是德意志南部电台交响乐团,(现名斯图加特电台交响乐团)的内部档案资料,从未公开发行过,内容是指挥家C·克莱伯(C·Kleiber),纽曼(V·Neumann),弗里乔伊(F·Fricsay)和舍尔欣(H·Scherchen)指挥该团排练的现场实况录像,黑白影片的画面陈旧了些,音响单薄了些,但镜头非常珍贵,难得一见。 相似文献
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笑脸,失神,本能反应,每种固定的表情或行为,在城市狡黠的光影下,会表现出多种层面的生活含义。努力抓住一些迅速消逝在眼睛里的面目和动作,试图表现出这些平凡的动作中触目惊心的一面,行色匆匆的人群,匆忙的脚步,孤独的背影,拥堵的车辆。繁华的闹市,这些东西,在没有时间记录的时刻,记录下这个城市不可缺少的经历的一个个画面,我感到异乡的孤独、亲切,它们构成了这个城市不可缺少的经历的一个个画面,我感到在异乡的孤独、亲切,它们构成了这个城市的身体部分。我在道路上抓拍,各式各样的身影档案凝固成它的血脉,画面之外的有声部分成为它的传奇,城市的庞大和多元化,使我无法根据我的主观感受对她做出全面的描述,但是,新的有生命感受,在喧哗中悄然显影。 相似文献
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月有圆缺,人有离台,中秋月圆,人间并非家家团圆,悲欢离台,亦难避免.更难避免的是人间苦难,年来大自然的天灾,和人谋不臧引发的人祸,更是越来越严重。大大小小的天灾人祸,确已是无日无之,你我今日或许碰不上,亦往往会有周边的亲朋不幸遇上。撤除天灾人祸,人生必定难免的是生老病死,此一过程亦难免会为人带来情绪上的起伏。为此,在社会上,特别是一些宗教团体, 相似文献
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北京08奥运在即,城镇家居环境营造水平的升级,催生着新生代电视,淘汰着老态龙钟的CRT(玻壳电视机)。然而,新生代并非只有唯一的继承者,出现了三分天下的局面,即液晶(LCD),等离子(PDP),背投(RPTV),经过几年来市场的敖斗和洗礼,天平逐渐向液晶(LCD)倾斜,虽然等离子(PDP),背投(RPTV)亦拥有强大的技术优势,结果显而易见,液晶(LCD)阵营因为应用面更广,积累资源更多,占据了大半江山,大有一统天下之势。但等离子(PDP),背投(RPTV)也非等闲之辈,不会轻易将大好江山拱手相让。 相似文献
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《电子产品维修与制作》2009,(21):80-80
金山毒霸发布的《2009年9月互联网安全报告》显示,9月新增病毒样本2,919,640个,病毒感染机器22,767,670台次,挂马网站1,244,572个。 相似文献
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A simple analysis relates the small-signal specification of a varactor's capacitance to an oscillator's tuning curve. The notion of an effective capacitance across the amplitude of oscillation is introduced. The analysis also explains how the varactor converts AM noise on the oscillation into FM, which is phase noise. The analysis is experimentally validated. 相似文献
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Cheng Z. Q. Cai Y. Liu J. Zhou Y. Lau K. M. Chen K. J. 《Microwave Theory and Techniques》2007,55(1):23-29
A low phase-noise X-band monolithic-microwave integrated-circuit voltage-controlled oscillator (VCO) based on a novel high-linearity and low-noise composite-channel Al0.3Ga0.7N/Al0.05Ga0.95 N/GaN high electron mobility transistor (HEMT) is presented. The HEMT has a 1 mumtimes100 mum gate. A planar inter-digitated metal-semiconductor-metal varactor is used to tune the VCO's frequency. The polyimide dielectric layer is inserted between a metal and GaN buffer to improve the Q factor of spiral inductors. The VCO exhibits a frequency tuning range from 9.11 to 9.55 GHz with the varactor's voltage from 4 to 6 V, an average output power of 3.3 dBm, and an average efficiency of 7% at a gate bias of -3 V and a drain bias of 5 V. The measured phase noise is -82 dBc/Hz and -110 dBc/Hz at offsets of 100 kHz and 1 MHz at a varactor's voltage (Vtune)=5 V. The phase noise is the lowest reported thus far in VCOs made of GaN-based HEMTs. In addition, the VCO also exhibits the minimum second harmonic suppression of 47 dBc. The chip size is 1.2times1.05 mm2 相似文献
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以条形光波导为例,研究了用时域有限差分(FDTD)法编程模拟波导光场分布时的数值不对称性,及其对模拟计算造成的影响,提出了两种合理的解决方法,成功消除了数值不对称现象对正常模拟的干扰,通过在波导光场FDTD模拟中的实际应用,分析了每种方法的特点及欠缺,分别论证了它们在数值模拟中的应用价值,并阐明这两种方法对于任意形状光波导光场的FDTD模拟是普遍适用的。 相似文献
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基于国内HDI线路板设计还不是非常普及,为给更多初接触HDI线路板设计者提供切实有用的参考和借鉴,本文从可制造性的角度出发,采用归类举例的方法,深入浅出的解释了HDI加工制造中复杂的难以理解的加工工序,并阐叙了加工工序对HDI线路板设计的影响,提醒初学者在HDI设计中应该注意到的有关加工制造的事项,切实提高设计的HDI板的可制造性。本文中关HDI制造工艺的参数、布局布线的经验均来自PCB生产厂家和一线PCB设计师,有极高的普及性和通用性。 相似文献
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The healthcare system needs to track and monitor patients’ status and information. One of the most important requirements is that the patient is able to access the service anywhere at any time. Systems are being developed using the Internet to monitor patients’ status, and in some areas, especially rural areas and motorways, the Internet may not be available, even though the mobile network is available. In some cases, the network might be overloaded, so the patient information cannot be delivered to the hospital or medical centre. We propose a new method that uses the spare extension of the random access channel (RACH), which is carried by physical random access channel (PRACH) to send the patient information to the medical centre. We present the mathematical model of the channel and compare the results with another system from 3GPP to evaluate the results. The results show that the proposed method needs less time to transmit the patient’s information. 相似文献
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ZHANG Li-ran 《中国邮电高校学报(英文版)》2000,7(3)
What will the Post in the world be like in 2005? At first glance, in view of worldwide structural changes, market liberalization and technological development, this question seems very hard to answer. However,without being able to draw a precise picture of the future post services, it can be affirmed that all current providers of postal services will have to face a very different environment from the current one. The objective of this analysis is to contribute to the future development by examining at the worldwide and regional level the major variables influencing the postal industry' s core businesssector, the letter-post, through analyzing the data published by the Universal Postal Union. 相似文献
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区块链技术在物联网中的应用在很大程度上缓解了数据隐私、网络安全等现象,为了拓展区块链技术的应用,需要相关人员重视技术研究。本文阐述了区块链技术概述、区块链技术在物联网中的应用、针对物联网的区块链底层技术研究以及区块链为物联网带来的诸多挑战,希望能够促进区块链技术的应用,从而创造更大的效益。 相似文献