1)rate of subjects主题词频
1.Last and most important,basing on the rate of subjects,this article found the core subjects of the master education of Information Science in Denmark.本文对丹麦情报学硕士教育的课程设置进行了考察,采用的调研方法是对这些硕士项目的课程设置进行统计分析,然后对课程名进行主题词标引以及主题词频统计,从而对丹麦情报学教育的重点领域进行实证分析和研究,探寻丹麦情报学教育的核心内容。
英文短句/例句
1.Research Focus Analysis Based on the Frequency of Topic Words and G-index基于主题词频和g指数的研究热点分析方法
2.Subject plays a very important role in the traditional document organization and manual retrieval.主题法包括关键词法、题词法、词法等。
3.Chinese Archives Subject Thesaurus《中国档案主题词表》
4.Word frequency analysis and quantitative study of SPRU s research themes;SPRU科研选题的词频分析与计量研究
5.An Applied Research of Theme Quotation in Schedule of China s Categorical Thematic Words;《中国分类主题词表》主题标引应用研究
6.An Analysis of Keyword and Theme Schema Based on the Theme Spoken English Corpus基于主题口语语料库的主题词及主题图式研究
7.On the Problem of How Verbs, Adjectives Can Be Used as Subjects and Objects;关于动词、形容词作主语、宾语问题
8.The paper mainly dwells on the frequency, usage, and semantics of prepositions.介词的频率,介词的用法,介词的语义是本文重点研究的三个问题。
9.Eco-poetry:Ecological Innovation of Chinese Poetry;生态诗词——中华诗词题材与主题的新拓展
10.Rethink about Modern Female Writing;唐宋词与当代流行歌词享乐主义主题分析
11.A Study On Establishment of Document Subject Dick in University;高校校本公文主题词表编制问题研究
12.The Effect of Topic Familiarity on Intermediate Korean Leaner s Incidental Vocabulary Acquisition;话题熟悉度和词频对中级韩国学习者伴随性词汇习得的影响
13.A set of subject terms that indicates the subject interests of an information system user.一组主题词,提出信息系统用户感兴趣的主题。
14.Theme & Theme-Inclination Relevance Fusion in Translating Classical Chinese Poetry古汉诗词英译的主题与主题倾向关联性融合
15.Effects of Topic-based Vocabulary Learning Strategy on Word Memory;话题为主的词汇学习策略对词汇记忆的影响
16.Study on the Difference of the Subjectivity of "Bing/Ke"+Negation;语气副词“并”/“可”+否定词的主观性问题研究
17.Song Ci of Sesthetic Expression of the Characteristics of the Subject to Life the Impact of论词体审美特点对宋词生命主题表达的影响
18.The Subject of Cuties and Love Stories of the Lament Composed by Male Ci Poets in the Song Dynasty宋代男性词人悼亡妾亡妓词的美色、情事主题
相关短句/例句
High-frequency subject headings高频主题词
3)subheadings副主题词
1.Use of subheadings in subject indexing of medical literature;医学文献主题标引中副主题词使用问题分析
4)subject word主题词
1.Its main idea is to divide a document into two parts:one is only composed of subject words(named as subject block),and the other contains no subject words(named as non-subject block).本文提出一种基于词语-主题词相关关系的语言模型TSA-LM(Term-Subject Association Based Language Model),它的基本思想是把一篇文档分成两个文档块,一部分是由领域主题词表中的主题词构成的主题词文档块,另一部分是由非主题词构成的非主题词文档块,分别计算两个文档块和查询的似然程度。
2.This paper introduces the basic concepts of the set theory, expounds the set analysis and operation of classification and subject words, and discusses the relations among the sets of the classification, non-controlled subject words and subject words.介绍了集合论的基本概念,阐述了分类法和主题词的集合分析与运算,论述了分类法、非控主题词和主题词的集间关系。
3.Aim:to explore how to select suitable searching words(subject word and random word)in medical document retrieval.目的:探讨医学文献检索中如何对检索词(主题词和自由词等)进行适当的选择。
5)subject words主题词
1.Through comparing the functions of subject words and Keywords,this paper analyzes the application of two modes in network literature information index search,and probes into the developing trend of index language in network environment.通过比较主题词法与关键词法的功能,分析两种方法在网络文献信息标引检索中的应用,探讨了网络环境下检索语言的发展趋势。
2.By using the special knowledge of Chinese Opera Science and the Library Classification Science,and connecting with the practical experience of the classification of the books,this paper probes into the set-up of the opera category and the set-up of the subjects in corresponding subject words indexes,and puts forward some suggestions.运用中国戏剧学和图书馆分类学的专业知识,结合图书分类工作的实践经验,对《中国图书馆分类法》戏剧类类目设置及相应的主题词对照索引中主题的设置进行了探讨并提出了几点建议。
6)Thesaurus[英][θ?'s?:r?s][美][θ?'s?r?s]主题词表
1.The opinions for revising the "Seismology Thesaurus of China;对《中国地震科学主题词表》的修订意见
2.By introducing and analyzing the characteristics of classification and thesaurus when applied in subject gateways,this paper summarizes the method of applying controlled language in subject gateways and its functionsand advantages.本文通过介绍、分析分类法、主题词表在学科信息门户中的应用特点,显示受控语言在学科信息门户中的应用方式、功能及优势。
3.This integration is based on the specification of inclusion relationships between thesaurus terms and ontology concepts and results in application-specific metadata schemas.为了减少语义异构性带来的信息发现、集成和存取的困难,论述了语义元数据构造,提出了通过集成现存的本体和主题词表构造元数据模式的一种新方法,即元数据模式构造的两步方法:在主题词T和本体O之间的连接关系规范;概念主题词表的自动构造。
延伸阅读
甚高频和超高频多普勒雷达 工作在30~3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1~100公里,所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度(见大气静力稳定度)等大气动力学参数的铅直分布。 原理 这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射;②稳定大气分层结构对入射电磁波的部分反射;③有时出现于中层大气的自由电子对电磁波的散射;④中层大气中的流星余迹散射。散射体积内空气的运动,使雷达回波具有多普勒频偏。 结构 MST 雷达的结构和气象多普勒雷达大致相同。其特点在于:它们一般配备了大型天线(天线阵),有些甚高频段雷达的天线阵,尺度达 30~200米,采用半波振子阵或八木天线振子阵,以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线,这类雷达的发射功率在几百千瓦至 2兆瓦之间,发射功率和天线面积的乘积值在106~1010瓦·米2之间。此外,为获得高灵敏度和高空间分辨率,在脉冲发射体制和回波数据处理方面,也采取一些技术措施。 用途 利用回波的多普勒频谱可以进行下述各项测量:①探测大气风场的铅直分布。同一仰角,空间分辨率约为 150~1000米,采用脉冲压缩技术后,分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后,可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前,甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化,而不能给出三维空间分布资料。 参考书目 K.S.Gage,B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59,No.9,pp.1074~1093,1978.