首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
Background: Systematic reviews can provide accurate and timely information on adverse effects. An essential part of the systematic review process is a thorough search of the literature. This often requires searching many different sources. However, it is unclear which sources are most effective at providing information on adverse effects. Objective: To identify and summarise studies that have evaluated sources of information on adverse effects. Methods: Studies were located by searching in 10 databases as well as by reference checking, hand searching, citation searching and contacting experts. Results: A total of 6218 citations were retrieved yielding 19 studies which met the inclusion criteria. The included studies tended to focus on the adverse effects of drug interventions and compare the relative value of different sources using the number of relevant references retrieved from searches of each source. However, few studies were conducted recently with a large sample of references. Conclusions: This review suggests that embase , Derwent Drug File, medline and industry submissions may potentially provide the greatest number of relevant references for information on adverse effects of drugs. However, a systematic evaluation of the current value of different sources of information for adverse effects is urgently required.  相似文献   

2.
Using the example of communication about risk in a primary care setting, this paper puts forward a method of developing and evaluating a detailed search strategy for locating the literature for a systematic review of a ‘diffuse’ subject. The aim of this paper is to show how to develop a search strategy that maximizes both recall and precision while keeping search outputs manageable. Six different databases were used, namely Medline, Embase, PsychLIT, CancerLIT, Cinahl and Social Science Citation Index (SSCI). The searches were augmented by hand-searching, contacting authors, citation searching and reference lists from included papers. Other databases were searched but yielded no extra references for this subject matter. Of the 99 papers included, 80 were indexed on Medline. The Medline search strategy identified 54 of them and the remaining 26 were located on other databases. The 19 further unique references were found using the other databases and methods of retrieval. A combination of several databases must be used to maximize recall and to increase the precision of searches on individual databases, thus improving the overall efficiency of the search.  相似文献   

3.
OBJECTIVES: The objectives of the study were: to provide an overview of approaches to methodological search filter development; to identify and critically review the stages of methodological search filter development; to devise a search filter appraisal checklist based on the review. METHODS: An iterative approach to searching was employed utilizing health and library databases, the world wide web and citation searching. Further systematic methods included hand searching of key journals in the field of search filter development, contacting known experts in the field and scanning reference lists of relevant papers to identify additional studies. Altogether, 51 potentially relevant papers were found, of which 20 met the inclusion criteria. RESULTS: Four stages of search filter development were identified from the literature (search term selection, identification of a gold standard, evaluation and validation). Variations in the methods used to approach these four stages were identified, most importantly in the extent to which search filters are tested and validated. CONCLUSION: Awareness of the process and limitations involved in search filter development is essential to make an informed decision on the applicability and validity of search filters. The findings of this review indicate a considerable agenda for future research, in particular, to improve the quality of reporting of search filters and to inform users on their use and application. Based on the review, guidance in the appraisal process of search filters is given in the form of a checklist.  相似文献   

4.
Background:Pharmacy students are primarily taught literature searching skills didactically during their Doctor of Pharmacy curriculum. To effect change in the area of advanced literature searching skills, a pharmacy librarian joined with two Advanced Pharmacy Practice Experience (APPE) preceptors to design and implement a crash course on applied systematic searching skills for a cohort of four students.Case Presentation:Through the cognitive apprenticeship model, a Systematic Searching Crash Course (SSCC) was implemented among a cohort of four academic APPE students. Students developed search strategies using controlled vocabulary and free text, translated their searches into multiple databases, and used citation management software to build libraries of evidence. Additionally, the cohort blindly peer reviewed each other''s search strategies, wrote literature reviews, and finally conducted a search together without input from the pharmacy librarian.Conclusions:Review of the pre-/post-course self-assessment taken by the cohort indicates the SSCC is a success in terms of improving student confidence in accessing and synthesizing primary literature. As the crash course is further refined and implemented, there may be more opportunity to embed the course into didactic curriculum and residency programs and to potentially reproduce it for other health science disciplines.  相似文献   

5.
To determine the mix of resources used in social gerontology research, a citation analysis was conducted. A representative sample of citations was selected from three prominent gerontology journals and information was added to determine subject scatter and database coverage for the cited materials. Results indicate that a significant portion of gerontology research, even from a social science perspective, relies roughly equally on medical resources as it does social science resources. Furthermore, there is a small but defined core of literature constituting scholarly “territory” unique to gerontology. Analysis of database indexing indicated that broad, interdisciplinary databases provide more comprehensive coverage of the cited materials than do subject-specific databases.  相似文献   

6.
This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, reports, etc. published in various library and information science forums on the subject of librarianship in the Maghreb. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, andEducation Abstracts within the DIALOG database as well as the respective print versions of these resources. While this work is by no means an exhaustive critique of the entire Maghrebi library and information science literature, it does strive to be comprehensive in terms of its country-by-country analysis of librarianship and information science within the region. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title.  相似文献   

7.
This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, reports, etc. published in various library and information science forums on the subject of librarianship in the Maghreb. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, andEducation Abstracts within the DIALOG database as well as the respective print versions of these resources. While this work is by no means an exhaustive critique of the entire Maghrebi library and information science literature, it does strive to be comprehensive in terms of its country-by-country analysis of librarianship and information science within the region. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title.  相似文献   

8.
OBJECTIVE: The article explores the characteristics of public health information needs and the resources available to address those needs that distinguish it as an area of searching requiring particular expertise. METHODS: Public health searching activities from reference questions and literature search requests at a large, urban health department library were reviewed to identify the challenges in finding relevant public health information. RESULTS: The terminology of the information request frequently differed from the vocabularies available in the databases. Searches required the use of multiple databases and/or Web resources with diverse interfaces. Issues of the scope and features of the databases relevant to the search questions were considered. CONCLUSION: Expert searching in public health differs from other types of expert searching in the subject breadth and technical demands of the databases to be searched, the fluidity and lack of standardization of the vocabulary, and the relative scarcity of high-quality investigations at the appropriate level of geographic specificity. Health sciences librarians require a broad exposure to databases, gray literature, and public health terminology to perform as expert searchers in public health.  相似文献   

9.
ABSTRACT

The authors of this article analyzed the differences in output when searching MEDLINE direct and MEDLINE via citation management software, EndNote X1®, EndNote Web®, and RefWorks©. Several searches were performed on Ovid MEDLINE and PubMed directly. These searches were compared against the same searches conducted in Ovid MEDLINE and PubMed using the search features in EndNote X1, EndNote Web, and RefWorks. Findings indicated that for in-depth research users, should search the databases directly rather than through the citation management software interface. The search results indicated it would be appropriate to search databases via citation management software for citation verification tasks and for cursory keyword searching.  相似文献   

10.
Scientific production is steadily growing, exhibiting 4% annual growth in publications and 1.8% annual growth in the number of references per publication, together producing a 12-year doubling period in the total supply of references, i.e. links in the science citation network. This growth has far-reaching implications for how academic knowledge is connected, accessed and evaluated. Against this background, we analyzed a citation network comprised of 837 million references produced by 32.6 million publications over the period 1965–2012, allowing for a detailed analysis of the ‘attention economy’ in science. Our results show how growth relates to ‘citation inflation’, increased connectivity in the citation network resulting from decreased levels of uncitedness, and a narrowing range of attention – as both very classic and very recent literature are being cited increasingly less. The decreasing attention to recent literature published within the last 6 years suggests that science has become stifled by a publication deluge destabilizing the balance between production and consumption. To better understand these patterns together, we developed a generative model of the citation network, featuring exponential growth, the redirection of scientific attention via publications’ reference lists, and the crowding out of old literature by the new. We validate our model against several empirical benchmarks, and then use perturbation analysis to measure the impact of shifts in citing behavior on the synthetic system's properties, thereby providing insights into the functionality of the science citation network as an infrastructure supporting the memory of science.  相似文献   

11.
Using EndNote version 7.0, the authors tested the search capabilities of the EndNote search engine for retrieving citations from MEDLINE for importation into EndNote, a citation management software package. Ovid MEDLINE and PubMed were selected for the comparison. Several searches were performed on Ovid MEDLINE and PubMed using EndNote as the search engine, and the same searches were run on both Ovid and PubMed directly. Findings indicate that it is preferable to search MEDLINE directly rather than using EndNote. The publishers of EndNote do warn its users about the limitations of their product as a search engine when searching external databases. In this article, the limitations of EndNote as a search engine for searching MEDLINE were explored as related to MeSH, non-MeSH, citation verification, and author searching.  相似文献   

12.
文章以上海师范大学化学学科用户近五年(2006-2010年)被SCI收录论文为对象,对收录的论文及其引文数据进行整理、统计,重点对引文数据从引用年代、引用频次和引用期刊所在库的情况三个方面加以分析,以获取化学学科电子期刊库对于化学学科科研的保障现状,为化学学科的数字资源优化和建设提供相应的参考和依据。  相似文献   

13.
高校社科查新体系构建探讨   总被引:2,自引:1,他引:1  
介绍高校社科查新体系构建的必要性,分析社科查新体系与现有的科技查新体系之间的区别,指出高校社科查新的现存问题,就高校社科查新体系的构建提出五点建议:一、发挥政府导向功能,推动社科查新体系建设;二、借鉴科技查新经验,健全社科查新行业规范;三、自建社科成果数据库,加强社科文献资源建设;四、配备高级查新人才,建立专业社科查新队伍;五、加大宣传和教育力度,提高社科研究者查新意识。  相似文献   

14.
Objective:We aimed to determine overlaps and optimal combination of multiple database retrieval and citation tracking for evidence synthesis, based on a previously conducted scoping review on facilitators and barriers to implementing nurse-led interventions in dementia care.Methods:In our 2019 scoping review, we performed a comprehensive literature search in eight databases (CENTRAL, CINAHL, Embase, Emcare, MEDLINE, Ovid Nursing Database, PsycINFO, and Web of Science Core Collection) and used citation tracking. We retrospectively analyzed the coverage and overlap of 10,527 retrieved studies published between 2015 and 2019. To analyze database overlap, we used cross tables and multiple correspondence analysis (MCA).Results:Of the retrieved studies, 6,944 were duplicates and 3,583 were unique references. Using our search strategies, considerable overlaps can be found in some databases, such as between MEDLINE and Web of Science Core Collection or between CINAHL, Emcare, and PsycINFO. Searching MEDLINE, CINAHL, and Web of Science Core Collection and using citation tracking were necessary to retrieve all included studies of our scoping review.Conclusions:Our results can contribute to enhancing future search practice related to database selection in dementia care research. However, due to limited generalizability, researchers and librarians should carefully choose databases based on the research question. More research on optimal database retrieval in dementia care research is required for the development of methodological standards.  相似文献   

15.
This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, and reports, etc. published in various library and information science forums on the subject of librarianship in Islamic East Africa. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, and Education Abstracts within the DIALOG database as well as the respective print copies of these resources. While this work is by no means an exhaustive analysis of the entire East African library literature, it does strive to be comprehensive in terms of its country-by-country breakdown of librarianship within the region. Islamic East Africa for the purposes of this work incorporates the nations of Comoros, Djibouti, Eritrea, Ethiopia, Somalia, Sudan, and Tanzania. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title.  相似文献   

16.
This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, and reports, etc. published in various library and information science forums on the subject of librarianship in Islamic East Africa. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, and Education Abstracts within the DIALOG database as well as the respective print copies of these resources. While this work is by no means an exhaustive analysis of the entire East African library literature, it does strive to be comprehensive in terms of its country-by-country breakdown of librarianship within the region. Islamic East Africa for the purposes of this work incorporates the nations of Comoros, Djibouti, Eritrea, Ethiopia, Somalia, Sudan, and Tanzania. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title.  相似文献   

17.
在开放存取蓬勃发展和高校图书馆馆藏电子化的大趋势下,高校图书馆的文献保障工作如何适应新的趋势,需要深入研究。本文以武汉大学2013年被SCIE、SSCI和A&HCI所收录文章的期刊类参考文献为研究样本,采用一种针对期刊类参考文献的以年为单位的引文检查方法,匹配世界主要开放存取期刊目录以及武汉大学图书馆馆藏电子和印本期刊目录,研究当前这三类期刊对样本参考文献及来源期刊的收藏和缺藏情况。以此探讨三类期刊在高校图书馆文献资源保障中的特征与趋势,以及开放存取期刊对馆藏资源建设的影响,为高校图书馆进一步优化期刊馆藏体系和提高文献保障率提供科学依据。  相似文献   

18.
The availability of web search engines offers opportunities in addition to those provided by bibliographic databases for identifying academic literature, but their usefulness for retrieving research is uncertain. A rigorous literature search was undertaken to investigate whether web search engines might replace bibliographic databases, using empirical research in health and social care as a case study. Eight databases and five web search engines were searched between 20 July and 6 August 2015. Sixteen unique studies which compared at least one database with at least one web search engine were examined, as well as drawing lessons from the authors’ own search process. Web search engines were limited in that the searcher cannot be certain that the principles of Boolean logic apply and they were more limited than bibliographic databases in their functions, such as exporting abstracts. Recommendations are made for improving the rigour and quality of reporting studies of academic literature searching.  相似文献   

19.
20.
SCIE和Scopus数据库的比较研究   总被引:4,自引:0,他引:4  
以SCIE和Scopus数据库为对象,从收录数据、检索功能、检索结果处理、个性化服务及检索效果等方面对两者进行比较分析,指出其异同。认为从总体上看,SCIE和Scopus均是功能强大的二次文献数据库,具有完善的检索功能、查找引文功能和链接整合功能,对检索结果的处理科学合理,检索结果令人满意。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号