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Results for “Information Retrieval Systems”

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At least 541 records · Page 30Linked to original sources
PubMed1999

The efficacy of using search engines in procuring information about orthopaedic foot and ankle problems from the World Wide Web.

This study has attempted to demonstrate the feasibility of obtaining information specific to foot and ankle orthopaedics from the World Wide Web (WWW). Six search engines (Lycos, AltaVista, Infoseek, Excite, Webcrawler, and HotBot) were used in scanning the Web for the following key words: "cavus foot," "diabetic foot," "hallux valgus,"and "pes equinovarus." Matches were classified by language, provider, type, and relevance to medical professionals or to patients. Sixty percent (407 sites) of the visited websites contained information intended for use by physicians and other medical professionals; 30% (206 sites) were related to patient information; 10% of the sites were not easily classifiable. Forty-one percent (169 sites) of the websites were commercially oriented homepages that included advertisements.

Ankle↗
PubMed2003

Information extraction from full text scientific articles: where are the keywords?

BACKGROUND: To date, many of the methods for information extraction of biological information from scientific articles are restricted to the abstract of the article. However, full text articles in electronic version, which offer larger sources of data, are currently available. Several questions arise as to whether the effort of scanning full text articles is worthy, or whether the information that can be extracted from the different sections of an article can be relevant. RESULTS: In this work we addressed those questions showing that the keyword content of the different sections of a standard scientific article (abstract, introduction, methods, results, and discussion) is very heterogeneous. CONCLUSIONS: Although the abstract contains the best ratio of keywords per total of words, other sections of the article may be a better source of biologically relevant data.

Anatomy↗
PubMed2005

PSI-BLAST-ISS: an intermediate sequence search tool for estimation of the position-specific alignment reliability.

BACKGROUND: Protein sequence alignments have become indispensable for virtually any evolutionary, structural or functional study involving proteins. Modern sequence search and comparison methods combined with rapidly increasing sequence data often can reliably match even distantly related proteins that share little sequence similarity. However, even highly significant matches generally may have incorrectly aligned regions. Therefore when exact residue correspondence is used to transfer biological information from one aligned sequence to another, it is critical to know which alignment regions are reliable and which may contain alignment errors. RESULTS: PSI-BLAST-ISS is a standalone Unix-based tool designed to delineate reliable regions of sequence alignments as well as to suggest potential variants in unreliable regions. The region-specific reliability is assessed by producing multiple sequence alignments in different sequence contexts followed by the analysis of the consistency of alignment variants. The PSI-BLAST-ISS output enables the user to simultaneously analyze alignment reliability between query and multiple homologous sequences. In addition, PSI-BLAST-ISS can be used to detect distantly related homologous proteins. The software is freely available at: http://www.ibt.lt/bioinformatics/iss. CONCLUSION: PSI-BLAST-ISS is an effective reliability assessment tool that can be useful in applications such as comparative modelling or analysis of individual sequence regions. It favorably compares with the existing similar software both in the performance and functional features.

Information Storage and Retrieval↗
PubMed2000

Finding health information on the Internet: health professionals.

This article discusses some of the key problems that clinicians encounter when searching the Internet for health information. Guidance is provided on how best to search the Internet to find high-quality information and resources. The Internet is a dynamic and valuable source of information for health professionals, but information accessed through the Internet should be critically evaluated before being applied to practice.

Databases, Bibliographic↗
PubMed2001

Drug prices and emergency department mentions for cocaine and heroin.

OBJECTIVES: In this report, the author illustrates the historic relation between retail drug prices and emergency department mentions for cocaine and heroin. METHODS: Price series based on the Drug Enforcement Administration's System to Retrieve Information From Drug Evidence database were correlated with data on emergency department mentions from the DrugAbuse Warning Network for cocaine (1978-1996) and heroin (1981-1996). RESULTS: A simple model in which emergency department mentions are driven by only prices explains more than 95% of the variation in emergency department mentions. CONCLUSIONS: Fluctuations in prices are an important determinant of adverse health outcomes associated with drugs.

Cocaine-Related Disorders↗
PubMed1997

Visual Genome Explorer: a comparative visual interface to genome data.

In response to the deluge of genome data, we are developing Visual Genome Explorer, an interactive graphical interface to genome data. Given is a description of the prototype program, which introduces the concept of visual comparative genomics for complete bacterial genomes.

Computer Communication Networks↗
PubMed1995

Researching the Oklahoma City bombing.

The authors present a literature retrieval strategy for investigators who plan to conduct research on the Oklahoma City bombing. To facilitate a comprehensive review of the scholarly research on disasters, mass emergencies, and terrorism, a multidatabase search strategy is strongly encouraged. Secondly, a wealth of current information and data on the bombing are available on "popular" and "news" files.

Adaptation, Psychological↗
PubMed1992

Oral contraceptives and cancer of the cervix uteri. A meta-analysis.

AIM AND OBJECTIVE: Because the findings of epidemiologic studies of the relationship between oral contraceptive use and cervical cancer have not been consistent, we reanalyzed the relationship. DESIGN: Meta-analysis of studies published to date. SETTING AND SUBJECTS: Papers were located by searching the MEDLINE data base, supplemented by a hand search of all the references in the articles recovered. MEASUREMENTS: Studies were graded as to quality. Two meta-analyses were performed: one including all the studies gathered and one including methodologically acceptable studies only. The method of Woolf was used to combine relative risks. Heterogeneity of the effect was assessed. MAIN RESULTS: Fifty-one published studies were collected: 21 case-control, 18 cross-sectional, and 12 cohort designs. Twenty-one of these were considered as methodologically acceptable, but only 18 could be pooled. The main results observed were: relative risks was 1.52 (1.3-1.8) for dysplasia, 1.52 (1.3-1.8) for carcinoma in situ, and 1.21 (1.1-1.4) for invasive cancer. A significant linear dose-response effect was observed in dysplasia, carcinoma in situ, and invasive cervical cancer. Heterogeneity of the effect was present in some of the former estimates. CONCLUSIONS: Oral contraceptive use may be a risk factor for all stages of the natural history of cervical cancer, which may imply an initiator effect. Limitations to this research are discussed.

Carcinoma in Situ↗
PubMedDate not supplied

Engineering aspects of rehabilitation for the handicapped.

An engineering approach to functional assessment has been utilized to assist the moderate-to-severely physically handicapped. These computer-aided assessments are directed at work, keyboard operation and driving. In order to improve the quality of life for this population, independent living systems, recreational and mobility aids, and automated retrieval systems for information on assistive devices have been developed. This paper discusses their implementation and applications.

Automobile Driving↗
PubMedDate not supplied

MARVIN, multi-agent softbot to retrieve multilingual medical information on the Web.

The World-Wide Web is an unstructured, multimedia and multilingual information network. While most efforts have addressed the structuring issue, very few attempts have been proposed to provide support for multilingual information retrieval. Yet, medical information is now available all over the world. The MARVIN (Multi-Agent Retrieval Vagabond on Information Network) softbot and its associated medical search engine MedHunt (Medical Hunter) are a solution for helping people, who only understand a few languages, to access multilingual information.

Information Storage and Retrieval↗
PubMed2003

Uzilla: a new tool for web usability testing.

Web usability testing and research presents challenges for accurate data collection. An instrumented browser solution, Uzilla, is compared with existing solutions, and its contributions to usability testing practice are noted. Uzilla implements a client-server architecture based on the open source Mozilla browser. Instrumentation of the browser facilitates the evaluation of Web sites and applications inside and outside of the laboratory. An integrated data collection and analysis server application decreases the effort required to understand test results and facilitates iterative testing.

Ergonomics↗