同济大学文献检索课件

第二章 计算机信息检索概论
第一节 计算机信息检索的发展

计算机信息检索是利用计算机查找出符合读者所需信 息的过程。 计算机信息检索的发展史 脱机信息检索阶段(20世纪50年代中期到60年代中 期) 联机信息检索阶段(20世纪60年代中期到70年代初 期) 跨国联机信息检索阶段(20世纪70年代中期至今) 光盘信息检索阶段(20世纪80年代中期至今) 网络信息检索阶段（20世纪90年代至今）
第二节 计算机信息检索的基础知识
一、计算机信息检索系统的构成

物理构成 ：计算机硬件、软件、数据库 数据库构成：文档(File) 、记录(Record) 、字段(Field)
数据库
文档1
文档2
文档3
…
记录1
记录2
记录3
…
字段1
字段2
字段3
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逻辑构成 ：信息采集与建立数据库子系统、标准化子系 统、用户子系统

（SO）European Journal of Human Genetics advance online publication, 27 September 2006; doi:10.1038/sj.ejhg.5201711. PMID: 17003842 [PubMed - as supplied by publisher]
（AB）Pulmonary arterial hypertension is a progressive disease, characterised by increased proliferation of
pulmonary artery smooth muscle cells, vasoconstriction and remodelling of the vascular wall leading to right heart failure and death. The idiopathic form is rare (idiopathic arterial primary hypertension (IPAH); formerly PPH, MIM#. untranslated region in exon 7 (g.8129T>C) was observed in five patients. It appeared in 46% of the control group. The frequency of this alteration in the coding region of the VIP gene could therefore not be correlated with the appearance of IPAH. Apart from the importance of VIP signalling, genetic and/or environmental modifiers might therefore contribute to the development and perpetuation of the disease.
CBMDISC数据库详细记录格式(中文)
字段组成


(机标) 流水号2006156553
标题 2005年重庆市城乡高血压流行病学调查及相关因素分析 英文标题Hypertensive epidemiological survey and correlation factors analysis in urban and rural areas of Chongqing City in 2005 著者胡蓉(1); 黄晓波(1); 罗开良(1); 胡淀(2); 乐庆荣(1); 侯永兰(1); 卢仙娥(3)



参文数6

基金重庆市卫生局资助项目(2003)

出处第三军医大学学报 2006; 28(10): 1121-1123 ISSN1000-5404国内代码51-1095内部 代码D07出版地重庆
PubMed:summary格式
ຫໍສະໝຸດ （AU）Haberl I, Frei K, Ramsebner R, Doberer D, Petkov V, Albinni S, Lang I, Lucas T, Mosgoeller, W （TI ）Vasoactive intestinal peptide gene alterations in patients with idiopathic pulmonary arterial hypertension. （SO）Eur J Hum Genet. 2006 Sep 27; [Epub ahead of print] （PMID） 17003842 [PubMed - as supplied by publisher]
构成的一条完整信息称为一条记录(Record)。
CBMDISC数据库检索结果题录格式

标题：急性胰腺炎中西医结合与单纯西医治疗对比分析 作者： 陈晓东(1); 孔棣(2); 马明(1) 作者单位： (1)天津医科大学研究生,天津300070; (2)天津 市南开医院,天津 300100 出处： 天津中医药 2010; (2) : 116-117 相关链接： 主题相关
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字段(FILED)： 计算机检索的最基本单位。计算机检索的重要字段包括篇名 (Title) 、作者 (Author) 、作者地 址 (Address) 、 刊名（ Source, 来
源）、关键词(Keyword)、主题词(MeSH)、文摘(Abstract)等。
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记录(RECORD)： 在一个二维表格中，每一栏称为一个字段 (Field) ，多个字段
著者单位(1)重庆医科大学附属第二医院心血管内科,重庆400010; (2)重庆医科大学医学统 计学教研室,重庆400016; (3)重庆医科大学流行病学教研室,重庆 400016 国省市名 重庆 文摘 目的:研究重庆市城乡人群高血压患病情况、危险因素、临床特点。方法: 15岁以上人群抽取5246
人进行调查,对城乡人群各年龄段的资料进行对比研究。结果:重庆市15岁以上自然人群高血压患病率为 18.49%(标化率16.65%),男性为18.79%,女性为18.23%, 结论:重庆市城乡人群高血压各有其特点,防治措 施必须针对改变膳食结构、加强锻炼、减重等为重点。著者文摘Author
Web of science详细格式


Vasoactive intestinal peptide gene alterations in patients with idiopathic pulmonary arterial hypertension 作者: Haberl, I (Haberl, Ines); Frei, K (Frei, Klemens); Ramsebner, R (Ramsebner, Reinhard); Doberer, D (Doberer, Daniel); Petkov, V (Petkov, Ventzislav); Albinni, S (Albinni, Sulaima); Lang, I (Lang, Irene); Lucas, T (Lucas, Trevor); Mosgoeller, W (Mosgoeller, Wilhelm) 来源出版物: EUROPEAN JOURNAL OF HUMAN GENETICS 卷: 15 期: 1 页: 18-22 DOI: 10.1038/sj.ejhg.5201711 出版年: JAN 2007 被引频次: 5 (来自 Web of Science) 引用的参考文献: 15 [ 查看 Related Records ] 摘要: Pulmonary arterial hypertension is a progressive disease, characterised by increased proliferation of
PubMed:abstracts格式

（SO）Eur J Hum Genet. 2006 Sep 27; [Epub ahead of print] （TI）Vasoactive intestinal peptide gene alterations in patients with idiopathic
pulmonary arterial hypertension. （AU）Haberl I, Frei K, Ramsebner R, Doberer D, Petkov V, Albinni S, Lang I, Lucas T, Mosgoeller W. （AD）1Medical University of Vienna, Department of Internal Medicine I, Division Institute of Cancer Research, Borschkegasse 8a, Vienna A-1090, Austria.
pulmonary artery smooth muscle cells, vasoconstriction and remodelling of the vascular wall leading to right heart failure and death. The idiopathic form is rare (idiopathic arterial primary hypertension (IPAH); formerly PPH, MIM# 178600). Our group correlated a deficiency in vasoactive intestinal peptide (VIP; MIM# 192320) levels in serum and lung tissue with the pathogenesis of IPAH. The aim of this study was to investigate the relevance of genetic alterations in VIP to the development of IPAH. We screened 10 patients (age 4-66 years) for alterations in the coding, the noncoding regions and the enhancer region of the VIP gene by direct sequencing. In eight of 10 patients, we found alterations compared to the wild-type sequence. We detected nine alterations. In the noncoding regions, eight alterations were in the introns 1, 2, 3 and 4 (g.448G > A g.501C > T g.764T > C g.2267A > T g.2390C > T g.3144T > C g.3912A > G g.4857A > G). In the coding regions, a single alteration in the 30 untranslated region in exon 7 (g.8129T > C) was observed in five patients. It appeared in 46% of the control group. The frequency of this alteration in the coding region of the VIP gene could therefore not be correlated with the appearance of IPAH. Apart from the importance of VIP signalling, genetic and/or environmental modifiers might therefore contribute to the development and perpetuation of the disease.