Results 1-20 of 87
 | 
期刊文章
王韫佳
声学学报
2004
[ABSTRACT] 目的在于探讨音高和时长两种因素在普通话轻声知觉中的作用方式以及比较两种因素所起作用的大小。使用了心理-声学的实验方法,所用刺激为音高和时长得到控制的15组合成的双音节语音词,要求33名普通话母语者对所有刺激的重音类型进行“重重”或“重轻”的强迫性选择判断。结果表明: (1)音高和时长对于普通话...
[KEYWORDS] 
期刊文章
王安红; 陈明; 吕士楠
声学学报
2004
[ABSTRACT] 提出卫种通过语句中声调音域低音点和次低音点求出语调短语低音线的方法,并以低音线为基准,考察从大规模方语语料库在随机抽取的汉语自然语句的语调科技管理,研究结果,与忆有有汉语名末语调理论不同,汉语同样具有各种语言中普遍存在的音高下倾和重的语调科技管理。低音线的下倾和重置可以出现在音步,语调短语和语...
[KEYWORDS] 
期刊文章
Wang, Xiaoyan; Qiu, Likun; Zhang, Wenxian
ICIC Express Letters, Part B: Applications
2015
[ABSTRACT] In Chinese, personal names bear abundant meaning, from cultural meaning to social meaning. Many studies have been performed on Chinese person names...
[KEYWORDS] 
期刊文章
Guo, Zhiyu; Liu, Kexin; Lu, Xiangyang; Ma, Hongji; Li, Kun; Yuan, Sixun; Wu, Xiaohong
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
2000
[ABSTRACT] The possibility and problems of using radiocarbon dating to historical chronology are discussed. The current situation of ancient Chinese chronolog...
[KEYWORDS] 
期刊文章
Wu, X.; Yuan, S.; Wang, J.; Guo, Z.; Liu, K.; Lu, X.; Ma, H.; Li, K.; Yuan, J.; Cai, L.
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
2000
[ABSTRACT] Bones are very important samples to determine the hosts of the cemetery of Jin Marquises which were excavated at Tianma-Qucun site in Shanxi Provin...
[KEYWORDS] 
期刊文章
Liu, Kexin; Guo, Zhiyu; Lu, Xiangyang; Ma, Hongji; Li, Bin; Wang, Jianjun; Zhou, Guanghui; Yuan, Jinglin; Ren, Xiaotang; Zhao, Qiang; Zhang, Zhengfang; Zhang, Guijun; Yuan, Sixun; Wu, Xiaohong; Li, Kun; Chen, Chia-erh
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
2000
[ABSTRACT] To meet the requirements of the Xia-Shang-Zhou Chronology project, an upgrade of the AMS facility at Peking University has been carried out, commen...
[KEYWORDS] 
期刊文章
王韫佳; 丁多永; 东孝拓
声学学报
2015
[ABSTRACT] 从调类个性、句中位置和重音级别3个层面的语音分析,考察普通话4个声调在不同语调条件下的音高实现。目标词被置于3种不同的焦点位置(即句重音最强的位置)和两种不同的非焦点位置(即非句重音位置)上,对目标词的调域以及目标声调的高音点和低音点进行了观察分析。实验结果表明,(1)在焦点条件以及非焦点条件...
[KEYWORDS] 焦点位置; 音步; 目标词; 协同发音; 统计检验; 双音节词; 配对样本; 对焦点; 前字; 音段
期刊文章
Liu, Kexin; Ding, Xingfang; Fu, Dongpo; Pan, Yan; Wu, Xiaohong; Guo, Zhiyu; Zhou, Liping
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
2007
[ABSTRACT] A compact 14C AMS system manufactured by the National Electrostatics Corporation has been installed at the Institute of Heavy Ion Physics, Peking U...
[KEYWORDS] 
期刊文章
Fulltext
Zhang XiaoMei; Wyeth, Paul
science china chemistry
2011
[ABSTRACT] Silks are among the most precious ancient and historic artefacts worldwide. While washing removes the natural gum from the fibres during the fabric...
[KEYWORDS] attenuated total reflectance infrared spectroscopy; archaeological silk; sericin; TRANSFORM INFRARED-SPECTROSCOPY; HISTORIC SILK; PROTEIN
期刊文章
Fulltext
Chen JianLi; Yang JunChang; Sun BingJun; Yan, Pan
中国科学e辑 技术科学
2009
[ABSTRACT] Analysis of the fabrication technology of a bronze knife with an iron blade and a bronze Ge with an iron blade, two copper-iron bimetallic wares, u...
[KEYWORDS] archaeometallurgy; Liangdaicun; AMS-(14)C dating; bimetallic object; ironworking
期刊文章
Fulltext
张晓梅; 原思训
光谱学与光谱分析
2010
[ABSTRACT] 中国考古出土的丝织品数量大,种类丰富,是中国古代文化遗产的重要组成部分,但由于丝蛋白易于降解老化的材料特性,有许多保护问题需要研究解决.对古代丝织品老化程度、老化特征的分析检测有助于了解丝织品的保存状况,并可为保护方法的选择与改进提供帮助.文章通过X射线衍射分析对丝织品老化特征及结晶度的变化进...
[KEYWORDS] 丝织品 结晶度 X射线衍射 老化 Silk fabrics Crystallinity X-ray diffraction Aging; Silk fabrics; Crystallinity; X-ray diffraction; Aging
期刊文章
Fulltext
van Ditmarsch, Hans; Ghosh, Sujata; Verbrugge, Rineke; Wang, Yanjing
人工智能
2014
[ABSTRACT] When agents know a protocol, this leads them to have expectations about future observations. Agents can update their knowledge by matching their ac...
[KEYWORDS] Protocols; Dynamic epistemic logic; Guarded automata; KNOWLEDGE; COMMUNICATION; LOGICS
期刊文章
Su, Qi; Zheng, Ying; Swen, Bin
journal of computational information systems
2008
[ABSTRACT] In the research of opinion mining, many related works have focused on the identification of the whole sentiment orientation of a review document or...
[KEYWORDS] 
期刊文章
Zhang, Xia; Li, Hongwei; Feng, Xiaohang
Chemical Engineering Transactions
2017
[ABSTRACT] In order to reveal the rheological properties of corn straw slurry and enzyme hydrolysate, this paper employs rotary viscometer, pre-treats the cor...
[KEYWORDS] 
期刊文章
Fulltext
Zhou, Lingli; Ma, Bo-Qiang
astroparticle physics
2012
[ABSTRACT] The light speed anisotropy, i.e., the variation of the light speed with respect to the direction in an "absolute" reference frame, is a p...
[KEYWORDS] Lorentz invariance violation; Light speed anisotropy; GRAAL experiment; BEAM LASER SPECTROSCOPY; LORENTZ VIOLATION; BACKGROUND-RADIATION; GENERAL PRINCIPLE; ISOTROPY; RELATIVITY; INVARIANCE; TESTS
期刊文章
Fulltext
Shao LiJing; Ma BoQiang
science china physics mechanics astronomy
2011
[ABSTRACT] The newly proposed entropic gravity suggests gravity as an emergent force rather than a fundamental one. In this approach, the Newtonian constant G...
[KEYWORDS] physical constants; entropic gravity; Lorentz violation; DOUBLY-SPECIAL RELATIVITY; LORENTZ VIOLATION; ENERGY; THERMODYNAMICS; SPACETIME; EQUATION; GRAVITY
期刊文章
Fulltext
Zhou, Lingli; Ma, Bo-Qiang
astroparticle physics
2013
[ABSTRACT] We make a reanalysis on the issue of neutrino speed anomaly by taking into account the newly reported data from the ICARUS experiment and other CNG...
[KEYWORDS] Neutrino speed; Light speed; Lorentz violation; Physical invariance; GENERAL PRINCIPLE; SN1987A
期刊文章
Qiu, Likun; Zhao, Kai; Hu, Changjian
paclic 23 proceedings of the 23rd pacific asia conference on language information and computation
2009
[ABSTRACT] This paper proposes a hybrid model to address the task of sense guessing for Chinese unknown words. Three types of similarity, i.e., positional, sy...
[KEYWORDS] 
期刊文章
Zhang, Weishi; Zhao, Kai; Qiu, Likun; Hu, Changjian
paclic 23 proceedings of the 23rd pacific asia conference on language information and computation
2009
[ABSTRACT] This paper presents a method for sentiment classification, called SESS (SElf-Supervised and Syntax-Based method). SESS includes three phases. First...
[KEYWORDS] 
[ABSTRACT] The chemical compositions of eleven ancient glass-disk-shaped wares and two eye-beads were analyzed by laser ablation inductively coupled plasma at...
[KEYWORDS] 
Results 1-20 of 87