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1978年9月初在长春召开了国家科委光学及应用光学学科组会议,到会的国内知名科学家有钱临照、王大珩、苏韦、陈杏蒲、高兆兰、洪晶、张志三、胡南琦、唐九华、于家本、梅遂生、林钧挺、贾循德、吴国安、王之江、邓锡铭、干福熹、匡定波、林祥棣、龚知本、刘树杞、马林、李小琼等,王大珩是学科组组长,我是学科组秘书.在这次会议上提出了成... 相似文献
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2008年全国高考理科综合能力测试卷(Ⅰ)物理试卷供湖北、湖南、河北、河南、浙江、江西、广西、陕西、山西、安徽、福建、辽宁等省使用,全卷无超纲题、偏题、怪题,绝大部分试题及评分标准,表述科学、严谨、规范. 相似文献
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金华一中构建了数十种校本研修模式,包括案例研修、同课异构研修、说课点评研修、问题研讨研修、理论专著研修、教学反思研修、集体备课研修、资源开发分享研修、实验改进研修、好题欣赏研修、变式教学研修、专家指导研修、成果分享研修、论辨式 相似文献
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由方丹群、董金英同志主编的《噪声控制114例》一书,计51万字,已由劳动人事出版社出版,在全国各地新华书店公开发行. 本书搜集、整理、汇编了近年来我国噪声控制工作者对危害严重的噪声源进行有效控制的典型实例.其中包括各类通风机、鼓风机、空压机、电动机、冷冻机、球磨机、纺织机、压铆机、裁边机、震捣台、加热炉、射芯机、气吊、风动机械、喷气发动机、内燃机、燃气轮机、排气放空等噪声控制.对于噪声与振动控制的七大措 相似文献
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1客观世界运动的层次客观世界的运动按层次可以分为:物理运动(机械、热、电磁、混沌与分形、量子等)、化学运动(原子、分子、生物小分子、生物大分子等)、生命运动(生物分子、细胞、器官、生命整体、生物群落等)、宇宙运动(星体、星系、宇宙的形成与演化等)、精神运动(反应、感觉、记忆、理解、认知等)、社会运动(群体、民族、国家、国际交流、社会形态、政治、经济、军事、文 相似文献
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A. I. Trokhimets 《Journal of Applied Spectroscopy》1995,62(1):88-90
Institute of Physicoorganic Chemistry, Academy of Sciences of Belarus, 220603, Minsk, Ul. Surganova, 13, Belarus. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 1, pp. 104–107, January–February, 1995. 相似文献
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F. Gandini A. Bruschi S. Cirant G. Gittini G. Granucci V. Muzzini C. Sozzi N. Spinicchia 《International Journal of Infrared and Millimeter Waves》2007,28(2):121-128
A spherical compact matched load, for high vacuum operation suited for short pulses (2 MW, 0.1 s) precise measurement has
been designed to test high power gyrotrons Bruschi, Gandini, Muzzini, Spinicchia, Cirant, Gittini, Granucci, Mellera, Nardone,
Simonetto, and Sozzi (Fusion Eng. Des. 56–57:649–654, 2001); Bruschi, Cirant, Gandini, Granucci, Mellera, Muzzini, Nardone,
Simonetto, Sozzi, and Spinicchia (Nucl. Fusion 43:1513–1519, 2003); Bruschi, Cirant, Gandini, Gittini, Granucci, Mellera,
Muzzini, Nardone, Simonetto, Sozzi, Spinicchia, Angella, and Signorelli (Development of CW and short-pulse calorimetric loads
for high power millimeter-wave Beams, 23rd Symposium on Fusion Technology, September 20–24, 2004, Venice, Italy). In order
to enhance the power handling capability of the load and to reduce the operation problems that may arise from an excessive
reflection from the load, a ray tracing code has been written to model the power distribution on the inner surface and the
pattern of the reflected radiation. The outcome of this code has been used to select a more convenient profile for the spreading
mirror of the load and to optimize a pre-load specially conceived to minimize the power reflected fraction. 相似文献
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N. K. Morozova E. I. Smirnova I. A. Karetnikov O. R. Golovanova V. G. Galstyan V. S. Zimogorskii 《Journal of Applied Spectroscopy》1996,63(4):543-547
Moscow Power Engineering Institute, 14, Krasnokazarmennaya Str., Moscow, GSP, 105835, Russia. Translated from Zhurnal Prikladnois
Spektroskopii, Vol. 63, No. 4, pp. 646–651, July–August, 1996. 相似文献
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ICP-AES雾化法氢化法联合测定白族产妇及新生儿发中常微量元素 总被引:2,自引:0,他引:2
本文报道用ICP-AES同时测定人发中24种元素的方法。采用10mg/ml样品,4.8mol/L盐酸溶液,用基体匹配法校正干扰,分别用雾化法和氢化法测定,用人发标准检验方法和结果的准确性。较满意地测定了Zn等18种元素。91例母婴发中的Zn、Fe、Sr、Mg、Cd、P、Ni、Se、As和Mo等元素呈显著的正相关性。 相似文献
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É. S. Zolotovitskaya L. V. Glushkova T. V. Kozulya A. B. Blank 《Journal of Applied Spectroscopy》1997,64(3):410-413
A method of the atomic-emission spectrum analysis of soil has been developed for control of the accumulation of technogenic
impurities in environmental objects. A sample, after calcination at 550°C, is evaporated in an arc discharge. Spectra are
recorded by a DFS-8 spectrograph. Simultaneously, determination is made of Li, Ba, Sr, Cu, Zn, Cr, Ni, Co, Pb, Bi, Mo, V,
Ge, Ga, Y, Nb, Sn, Cd. For the majority of the elements the detection limits are lower than their percent abundance in the
crust and their maximum permissible concentrations.
Institute for Single Crystals, National Academy of Sciences of Ukraine, 60, Lenin Ave., Khar'kov, 310001, Ukraine. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 3, pp. 396–399, May–June, 1997. 相似文献
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I. D. Lomako T. V. Smirnova A. N. Igumentsev A. A. Mel'nikov 《Journal of Applied Spectroscopy》1996,63(4):561-567
Institute of Physics of Solids and Semiconductors, Academy of Sciences of Belarus, 17, P. Brovka Str., GSP, Minsk, 220072.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 63, No. 4, pp. 667–675, July–August, 1996. 相似文献
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M. K. Samokhvalov 《Journal of Applied Spectroscopy》1995,62(3):555-558
Ul'yanovsk State Technical University, 32, Severnyi Venets St., Ul'yanovsk, 432027, Russia. Translated from Zhurnal Prikladnoi
Spektroskopii, Vol. 62, No. 3, pp. 182–185, May–June, 1995. 相似文献
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Due to the drawbacks in Support Vector Machine(SVM)parameter optimization,an Improved Shuffled Frog Leaping Algorithm(Im-SFLA)was proposed,and the learning ability in practical speech emotion recognition was improved.Firstly,we introduced Simulated Annealing(SA),Immune Vaccination(Iv),Gaussian mutation and chaotic disturbance into the basic SFLA,which bManced the search efficiency and population diversity effectively.Secondly,Im-SFLA Was applied to the optimization of SVM parameters,and an Im-SFLA-SVM method Was proposed.Thirdly,the acoustic features of practical speech emotion,such aS ridgetiness,were analyzed.The pitch frequency,short-term energy,formant frequency and chaotic characteristics were analyzed corresponding to different emotion categories,and we constructed a 144-dimensional emotion feature vector for recognition and reduced to 4-dimension by adopting Linear Discriminant Analysis(LDA) Finally,the Im-SFLA-SVM method Was tested on the practical speech emotion database,and the recognition results were compared with Shuffled Frog Leaping Algorithm optimization-SVM(SFLA-SVM)method,Particle Swarm Optimization algorithm optimization-SVM(PSo-SVM) method,basic SVM,Gaussian Mixture Model(GMM)method and Back Propagation(BP)neural network method.The experimentM resuits showed that the average recognition rate of Im-SFLA-SVM method was 77.8%,which had improved 1.7%,2.7%,3.4%,4.7%and 7.8%respectively,compared with the other methods.The recognition of fidgetiness was significantly improve,thus verifying that Im-SFLA was an effective SVM parameter selection method,and the Im-SFLA-SVM method may significantly improve the practical speech emotion recognition. 相似文献
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利用ICP-AES分析技术,通过对样品处理、元素分析谱线、酸度等因素进行试验研究,综合确定了分析条件,对铜电解液中杂质元素(Fe、Ni、Pb、Bi、Sb、Zn、As)进行了ICP-AES测定。结果表明,ICP-AES测定铜电解液中Fe、Ni、Pb、Bi、Sb、Zn和As,可以满足铜电解生产的需要,为高纯阴极铜的生产起了指导作用。 相似文献