Online Retrieval of Environmental and Occupational Health Literature:

A formal study was attempted to assess the utility of the various online database sources for obtaining material in the fields of occupational and environmental health. Five databases were studied comparatively: BIOSIS, ENVIROLINE, EXCERPTA MEDICA, MEDLINE, and TOXLINE. In addition to crossdatabase searching to draw comparisons, a study of the journal coverage of four of these databases was completed. The goal of this effort was to establish some "databases of choice" for searching the literature.     

Healthcare Workers’ Choices for Medical Literature

Healthcare is reliant on the knowledge of the people responsible for making decisions about our health. Internet searching on sites that are simple to use and navigate may entice them to use less precise resources for their research and has the possibility of being detrimental to a patient’s diagnosis and treatment. Librarians should recognize this, and create steps toward reversal. Methods and tools for finding the most trustworthy facts should be introduced to these healthcare workers. Orientations, training sessions, and marketing of services are all means to moving forward with more accurately informed healthcare providers.     

Searching MEDLINE for Aboriginal and Torres Strait Islander health literature: questionable sensitivity

Objective

The extent to which existing and future research can impact on reducing health disparities relates not only to the evidence available, but the ability to find that evidence. Our objective is to quantify experts' literature searching effectiveness with respect to Aboriginal and Torres Strait Islander people's health.

Methods

Nine journals were dual reviewed, and a ‘gold standard’ set of relevant articles was identified. Health librarians (n = 25) completed a standardised searching task using OVID MEDLINE, and results were compared with the gold standard. Sensitivity, specificity and precision rates were calculated.

Results

The gold standard comprised 136 of 1469 (9.3%) records from nine journals. Searches achieved a mean sensitivity of 53.2% (median = 64.7%, range 0.0–93.4%), specificity of 97.4% (median = 99.4%, range 52.6–100%) and precision of 83.3% (median = 91.0%, range 16.7–100%). Self‐estimates of search sensitivity (post hoc) were significantly higher than observed (M = 78.9%, t = 4.812, P < 0.001).

Conclusions

Even expert searchers struggle to find the relevant peer‐reviewed literature in MEDLINE.

Implications

A search filter may improve searching effectiveness for Aboriginal and Torres Strait Islander health literature. Assessment of health librarians' searching competencies warrants further professional debate and consideration.     

PubMed免费MEDLINE检索功能和使用方法

针对网上医学文献检索中的实际问题，介绍了美国国家医学图书馆生物技术中心开发的PubMed网站更新的免费MEDLINE检索功能和使用方法。     

关于从MEDLINE数据库中进行知识抽取和挖掘的研究进展

本文对近年来国内外利用医学文献检索系统MEDLINE进行知识抽取和文本数据挖掘的研究进行了回顾和综述,包括Swanson等开展的从文献中发现隐藏的联系的研究,Cimino等人开展的从文献中抽取规则的研究,国外的共词及国内的共篇分析研究.并据此提出,在当前信息技术高速发展的条件下,应当充分开展知识抽取和文本挖掘的研究,为图书情报部门的服务功能从文献管理向信息管理和知识管理转化进行理论上的探索.     

旋转锥形水射流喷头的结构设计与相关分析

为了进一步改善工作效果,提高工作效率,尽可能减少能量损失,理论上探索适合磨料与水两相介质的加旋方式,设计出喷头结构,对旋转锥形射流喷头结构和射流在加旋段中的受力进行分析和研究．利用螺旋二相流相关理论初步讨论旋转锥形射流的运动特性。     

Online Reference Services in Community Hospitals

Careful planning is necessary to establish online reference services in community hospitals. A demonstration of those services is the first step. Use of hospital-to-hospital comparisons and statistical data is recommended. The library committee can assist in developing a proposal to administration and in generating support. When approval for online services has been granted, a budget should be drawn up. Other hospital librarians' experiences should guide terminal selection and decisions on maintenance contracts. Demonstrations can help to publicize the new service. Flexibility on the librarian's pan is crucial to its success. Impersonal factors such as libray location should not be neglected. Streamlined procedures are essential. An external network for consultation and continuing education is equally important.     

规避与反规避之间的较量——执行反制进路探析

当前,执行反制所针对的规避行为呈现多样化趋势,主要有转移型、欺骗型、抗拒型、拖赖型、躲避型等。为了遏制上述规避行为愈演愈烈,维护司法权威,保障诚信风尚,稳定经济秩序和社会秩序,打击规避执行在当前显得十分必要和紧迫。进一步系统开展执行反制工作,应将预防为主,防治结合作为应对思路。     

MEDLINE数据库的发展及其三种版本的比较

MEDLINE是医学界最常用的外文文献书目数据库,其发展演变情况复杂、检索平台品种繁多.文章回顾了其发展演变过程,并从数据范围、记录构成、检索规则、主题词检索、结果输出、个性化服务等方面比较SilverPlatterMEDLINE、Ovid-Medline和PubMed三个版本的异同,试图让读者对MEDLINE有一个更为全面的了解.     

“互联网+”形势下大学数学课程改革的思考

大学数学课程是工科院校的重要基础课程,结合当前大学数学的教学现状,分析传统教学模式的优缺点,对"互联网+"形势下的教学改革提出建议。