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Search Results: 1 - 10 of 257783 matches for " 张玉洁GONG Shuang-shuang "
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基于网络文本的汉语多词表达抽取方法
Extraction of Chinese multiword expressions based on Web text

龚双双,陈钰枫,徐金安,玉洁
GONG Shuang-shuang
, CHEN Yu-feng, XU Jin-an, ZHANG Yu-jie

- , 2018, DOI: 10.6040/j.issn.1671-9352.1.2017.060
Abstract: 摘要: 多词表达(multiword expressions, MWEs)是自然语言中一类固定或半固定搭配的语言单元,特别在网络文本中,多词表达频繁出现,给分词和后续文本理解带来了巨大挑战,因此,面向网络文本提出了一种双层抽取策略来实现多词表达的识别。第一层次,利用基于左右熵联合增强互信息的算法来实现多词表达的初步抽取;第二层次,在第一层次获得的多词表达候选列表的基础上,利用SVM分类器,构建上下文和词向量特征,进行多词表达与非多词表达的分类,实现多词表达候选列表的进一步过滤。经过实验测试,在5 000条微博语料上,第一层次获得的多词表达的F值为84.92%,第二层次多词表达识别的F值为89.58%,相比于基线系统,性能有很大的提升。实验结果表明,双层抽取策略能够实现网络多词表达的有效抽取,并能有效改善分词结果。
Abstract: A Multiword Expression is a kind of fixed and semi-fixed collocation in natural language, especially in network text, MWEs appear frequently, which brings a great challenge to the subsequent segmentation and text comprehension. Therefore, we propose a double-layer extraction strategy to achieve the recognition of MWEs in this paper. In the first layer, we use the LRE+EMI algorithm to achieve the initial extraction of MWEs; In the second layer, we use SVM classifier and construct the characteristics of context and word vector to classify the MWEs and non-MWEs, in order to further filter the MWEs candidate list on the basis of the MWEs candidate list got from the first layer. After the experiment, the F value of MWEs reached 84.92% in the first layer and the F value of MWEs reached 89.58% in the second layer, which have greatly improved performance compared with the baseline system. The experimental result shows that the double-layer extraction strategy can availably extract MWEs, and can effectively improve the segmentation results
5-Bromo-2-methoxy-4-{[(4-methoxyphenyl)imino]methyl}phenol monohydrate
Cheng-Gong Mao,Shuang-Shuang Wang,Deng-Cheng Su,Shao-Song Qian
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536811054742
Abstract: The crystal structure of the title compound, C15H14BrNO3·H2O, has a trans configuration about the central C=N double bond. An intramolecular O—H...O hydrogen bond occurs in the main molecule. The crystal packing is stabilized by strong O—H...O and O—H...N hydrogen bonds.
A Tentative Study of the Impoliteness Phenomenon in Computer-mediated Communication
Shuang-shuang LU
Cross-Cultural Communication , 2010, DOI: 10.3968/790
Abstract: This article examines the politeness phenomenon in one particular computer-mediated communication (CMC) situation in China: synchronous private on-line chat. With the popularization of the internet, CMC has drawn the attention of many linguists and communication theorists. Some previous studies have compared computer-mediated communication (CMC) with face-to-face communication (FTF); findings reveal that CMC bears some resemblance and displays some differences from FTF communication in terms of the communication characteristics and linguistic features. Yet the politeness strategies have not received much attention in CMC. The present study aims to see whether the politeness principles based on FTF communication can be applied to CMC. The study finds that traditional politeness principles and maxims based on FTF are often violated and readapted in synchronous on-line chat; but instead of hindering the on-line communication, the violation and adaptation are found to fulfill different social and interpersonal functions in CMC, including fostering solidarity between the participants, venting one’s emotions, improving the efficiency of communication etc.. Key words: politeness; computer-mediated communication; interpersonal function; social function; QQ. Résumé: Cet article examine le phénomène de politesse dans une situation particulière de communication médiatiée par ordinateur (CMO) en Chine: le chat privé instantané en ligne. Avec la popularisation de l'Internet, la CMO a attiré l'attention de beaucoup de linguistes et des théoriciens de la communication. Plusieurs études antérieures ont comparé la communication médiatisée par ordinateur (CMO) avec la communicatin en face-à-face(FàF), dont les conclusions révèlent que le CMO montre une certaine ressemblance et affiche certaines différences par rapport à la communication FàF en termes de caractéristiques de communication et des caractéristiques linguistiques. Pourtant, les stratégies de politesse n'ont pas re u beaucoup d'attention dans la CMO. La présente étude vise à déterminer si les principes de politesse basés sur la communication FàF peuvent être appliqués à la CMO. L'étude conclut que les principes de politesse et les maximes traditionnelles fondés sur la communication FàF sont souvent enfreints et réadaptés au chat instantané en ligne, mais au lieu d'entraver la communication en ligne, la violation et l'adaptation semblent pouvoir remplir de différentes fonctions sociales et interpersonnelles dans la CMO, y compris la solidarité encouragée entre les participants, le déchargement des émotions, l'am
Numerical study of effect of geometrical parameters on the passband of left-hand material
结构参量对左手材料通带位置影响的研究

Gong Qiao-Xi,Zhao Shuang-Shuang,Duan Zhi-Yong,Ma Feng-Ying,
弓巧侠
,赵双双,段智勇,马凤英

物理学报 , 2011,
Abstract: We systematically study the transmission property of metallic short-slab pair and continuous wire structure metamaterial and its dependence on the system geometrical parameters in the infrared frequency regime, using the transfer-matrix method and the commercial code, CST Microwave Studio. It is found that the passband is sensitive to the length and the thickness of the continuous wire. As the length or thickness increases, the passband is slightly extended to a higher frequency. It is also found that the dependence of the passband on the material of dielectric layer.
Molecular Cloning and Comparison of Ubiquitin Fusion Protein and Ribosomal Protein L30 from Ophiophagus hannah
眼镜王蛇泛素融合蛋白基因和核糖体蛋白L30基因的克隆及分析

WEI Shuang-shuang,ZHANG Ying-xia,LEE Wen-hui,ZHANG Yun,
韦双双
,张英霞,李文辉,

动物学研究 , 2005,
Abstract: Total RNA was extracted from the venom gland of snake Ophiophagus hannah. A king cobra venom gland cDNA library was then constructed using purified mRNA from the total RNA. By random sequencing of 200 independent clones, two conserved cDNA sequences of house-keeping genes were obtained. One is ubiquitin fusion protein (GenBank accession number AF297036); the other is ribosomal protein L30 (GenBank accession number AF297033). The former has an open reading frame of 387 bp, encoding a 128 amino acid ubiquitin fusion protein precursor composed of a 76 amino acid ubiquitin domain and followed by a 52 amino acid ribosomal protein L40 domain. The deduced precursor protein from the nucleotide sequence is basic. The C-terminus of the ubiquitin fusion protein contains the zinc-finger motif. The latter has an open reading frame of 348 bp, encoding for 115 amino acid ribosomal protein L30 precursor. The predicted amino acid sequence of ubiquitin fusion protein is highly conserved when compared to the sequences of homologous proteins from sixteen diverse species.
Purification and Characterization of Annexin Ⅱ Related Protein from Bombina maxina Skin
大蹼铃蟾皮肤膜联蛋白Ⅱ相关蛋白的分离纯化及活性

ZHANG Jie,WEI Shuang-shuang,ZHANG Yong,ZHANG Ying-xia,LEE Wen-hui,
,韦双双,张勇,张英霞,李文辉

动物学研究 , 2005,
Abstract: 通过阴离子交换、凝胶过滤和阳离子交换层析,从大蹼铃蟾皮肤中纯化到一个表观分子量为33kDa的单链蛋白。N-末端序列比较分析显示,该蛋白与来自非洲爪蟾、红色原鸡和人膜联蛋白Ⅱ的N-末端序列相同的氨基酸分别占70%、64%和56%。该蛋白具有以钙依赖的方式抑制专一性血小板膜糖蛋白Ⅵ受体激动剂——Stejnulxin诱导洗涤人血小板聚集的生物学功能,最大抑制率达48%。结合其N-末端序列BLAST搜索结果及其活性的钙依赖性,推测该蛋白是与膜联蛋白Ⅱ相关的一类蛋白质,
Effects of cinobufacini injection on contents of serum thyroid-stimulating hormone and adrenaline in rats
Shuang-shuang WANG,Bai LI
Zhong Xi Yi Jie He Xue Bao , 2009,
Abstract: Objective: To observe the effects of cinobufacini injection on serum levels of thyroid-stimulating hormone (TSH) and adrenaline (ADR) in rats, and to speculate the property (cold or heat) of the drug.Methods: Thirty-two male Wistar rats were randomly divided into normal control group, cinobufacini injection group, cold syndrome group and heat syndrome group. The rats in the four groups were administered with normal saline, cinobufacini injection, and compound of traditional Chinese drugs with heat or cold property. The weights, and the serum TSH and ADR levels of the rats were measured before and after the interventions.Results: The weights of the rats in heat syndrome group markedly decreased after 14-day administration when compared with the normal control group (P<0.05). There were no significant differences among the normal control group, heat syndrome group and the cinobufacini injection group. Although no statistical difference was noted, the serum TSH levels of the cold syndrome group and cinobufacini injection group were slightly lower than that in the normal control group after 14-day administration, and the heat syndrome group showed a slightly higher serum TSH level. After administration, the serum ADR levels of the cold syndrome group and cinobufacini injection group were significantly lower than that in the normal control group (P<0.05), and the serum ADR level in the heat syndrom group was higher than that in the normal control group (P<0.05).Conclusion: Cinobufacini injection seemed to be able to suppress the thyrotrophin-releasing hormone-TSH-thyroxine system and sympathetic nervous system, matching up with the characteristics of the Chinese herbs of cold property. And the study provided initial experiment evidence for the conclusion that the property of cinobufacini might be cold.
Simultaneous Determination of 10 Sulfonamide Antibiotics in Water by Solid-phase Extraction and High Performance Liquid Chromatography
固相萃取-高效液相色谱法同时测定水体中的10种磺胺类抗生素

HONG Lei-jie,SHI Lu,ZHANG YA-lei,ZHOU Xue-fei,ZHU Hong-guang,LIN Shuang-shuang,
洪蕾洁
,石璐,亚雷,周雪飞,朱洪光,林双双

环境科学 , 2012,
Abstract: 建立了一种采用固相萃取-高效液相色谱法同时测定水体中10种磺胺类抗生素的方法.样品经自制PEP固相萃取小柱富集净化、乙腈-二氯甲烷(2 ∶1,体积比)洗脱后,用高效液相色谱-紫外检测器测定.检测波长λ=268 nm,柱温33℃,流动相为乙腈-0.4%乙酸/水(体积比),采用梯度洗脱程序,实现了10 种待测组分的基线分离,线性范围为10~2000 μg·L-1.去离子水和实际水样的加标回收率范围分别为73.4%~95.6%和70.2%~92.5%(磺胺除外,分别为8.5%和8.0%).整个分析方法的检出限为1.42~7.25 ng·L-1.应用此方法对上海市黄浦江部分河段江水、崇明岛地表水及地下水的测定表明在这几种不同水体环境中,不同频率地检出了磺胺类药物,浓度范围为13.3~241.5 ng·L-1,从而证明该方法具有快速简便、灵敏高效等优点,可满足实际工作的需要.
上颌第二磨牙根管变异
Variation of Root Canals in Maxillary Second Molar: A Case Report

, 倪璨, 任双双, 李雯, 禹怡君, 苗雷英
ZHANG Mei
, NI Can, REN Shuang-shuang, LI Wen, YU Yi-jun, MIAO Lei-ying

- , 2017, DOI: 10.13701/j.cnki.kqyxyj.2017.11.023
Abstract: 摘要 根管系统复杂多样,具有不同的数目和形态,特别是上颌第二磨牙。本文报道1例关于成功治疗上颌第二磨牙5条根管的罕见案例
(E)-Isopentyl 3-(3,4-dihydroxyphenyl)acrylate
Shuang-Shuang Gu,Jun Wang,Fei Pan,Na Pang
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812003352
Abstract: The title compound, C14H18O4, a derivative of caffeic acid, has an E configuration about the C=C bond. The benzene ring is almost coplanar with the C=C—C(O)—O—C linker [maximum deviation = 0.050 (2) ], making a dihedral angle of only 4.53 (2)°. In the molecule, the adjacent hydroxy groups form an O—H...O interaction. In the crystal, molecules are linked by O—H...O hydrogen bonds, generating a chain propagating in the [110] direction.
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