Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Multimedia”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,459 records · Page 81Linked to original sources
PubMed1995

The acceptance of computer assisted learning by medical students.

The use of computer assisted learning (CAL) in the medical undergraduate curriculum is increasing. Little is known regarding the acceptability of CAL among medical students. The present study was conducted to investigate the possible anxiety generated by and the acceptability of CAL among medical students. One hundred and twenty-six students completed a questionnaire after using a software package which has been as an adjunct in teaching urology. The present study demonstrates that there was little anxiety experienced by the students when using CAL and furthermore that there was a high level of acceptance for this type of instruction. This is encouraging for medical educators involved in producing multimedia packages for teaching medicine and surgery.

Anxiety↗
PubMed1996

Interactive urology: an evaluation.

BACKGROUND: Interactive Urology is a multimedia software program that has been written to provide computer-assisted interaction for medical students at the University of Sydney during their surgical term in urology. An evaluation sought to establish how the software will be used by medical students in the learning context and to explore the efficacy of the software in the transfer of content as well as problem-solving skills. METHODS: Interactional analysis during student computer sessions and pre- and post-testing included a total of 80 medical students to evaluate Interactive Urology. RESULTS: The software package appeared to promote higher-order thinking skills with brainstorming activities occupying about half the time available. utilizing pre- and post-testing, Interactive Urology was found to be efficacious in the transfer of content and problem-solving skills. It was also found to be as effective as text in transferring content and problem-solving skills. The sequence of text and computer assisted learning (CAL) did not alter learning efficacy. CONCLUSION: It was concluded from the present study that Interactive Urology is an effective and valuable learning resource for medical students.

Computer-Assisted Instruction↗
PubMed2006

Screenieboppers and extreme screenies: the place of screen time in the time budgets of 10-13 year-old Australian children.

OBJECTIVES: Excessive 'screen time' has been associated with a range of psychosocial disturbances and increasing pediatric obesity. This study describes the magnitude, distribution, composition and time-distribution of children's screen use; examines correlates of screen use; and characterises 'extreme' screen users (top quartile). METHODS: 1,039 South Australian children aged 10-13 years old completed a multimedia 24-hour activity recall diary on 2-4 occasions in 2002, including at least one school day and one non-school day. RESULTS: The median screen time was 229 minutes.d(-1). This was higher in boys (264 vs. 196 minutes; p<0.001) and on non-school days (260 vs. 190 minutes; p<0.001), increased with age (p=0.003), and decreased with socio-economic status (SES; p=0.003). Television consumed 73% of all screen time, video games 19%, non-game computer use 6%, and cinema 2%. The top quartile of screen users were more likely to be boys (OR=3.8), have low physical activity (OR=4.3), spend >25% of screen time playing video games (OR=1.8), sleep less, and be of lower SES. CONCLUSIONS AND IMPLICATIONS: Interventions to reduce screen time should target inactive, low-SES boys, encourage earlier bedtimes, and limit video game use.

Adolescent↗
PubMed2004

Women's antenatal knowledge and plans regarding intrapartum pain management at the Royal Hospital for Women.

AIMS: To examine women's knowledge and antenatal plans regarding intrapartum pain management options at Royal Hospital for Women (RHW), Sydney, Australia. METHODS: From October 2002 to January 2003 women aged over 16 who had been in labour were given a questionnaire to complete in the first week post-partum regarding intrapartum pain management. This included questions regarding their antenatal knowledge and predetermined plans. RESULTS: There were 496 participating women (69% response rate). Antenatal pain management information was accessed by 98% of women. Sources most accessed were antenatal classes (55%), multimedia (53%), and friends/relatives (46%). Sixty percent of women felt 'very well informed' antenatally. Women felt better informed antenatally if married/defacto, university educated, privately insured, or receiving birth centre care. Antenatally, 80% planned to use intrapartum pain management: 'natural' methods were most popular (62% planned to use), and pethidine least (49% planned against). The most common determinant against using medical methods was possible maternal side-effects. Intrapartum, 19% used 'unwanted' pain management, mostly (67%) due to increased labour pain. Increased information access was associated with significantly higher use of both 'natural' methods and epidural analgesia, as well as significantly higher satisfaction scores. CONCLUSIONS: Almost all women at RHW access information antenatally about intrapartum pain management, often from informal sources. Demographic factors affected type of information accessed and women's plans. Adequate access to information affected use of, and satisfaction with, pain management.

Australia↗
PubMed2004

A practical guide to developing effective web-based learning.

OBJECTIVE: Online learning has changed medical education, but many "educational" websites do not employ principles of effective learning. This article will assist readers in developing effective educational websites by integrating principles of active learning with the unique features of the Web. DESIGN: Narrative review. RESULTS: The key steps in developing an effective educational website are: Perform a needs analysis and specify goals and objectives; determine technical resources and needs; evaluate preexisting software and use it if it fully meets your needs; secure commitment from all participants and identify and address potential barriers to implementation; develop content in close coordination with website design (appropriately use multimedia, hyperlinks, and online communication) and follow a timeline; encourage active learning (self-assessment, reflection, self-directed learning, problem-based learning, learner interaction, and feedback); facilitate and plan to encourage use by the learner (make website accessible and user-friendly, provide time for learning, and motivate learners); evaluate learners and course; pilot the website before full implementation; and plan to monitor online communication and maintain the site by resolving technical problems, periodically verifying hyperlinks, and regularly updating content. CONCLUSION: Teaching on the Web involves more than putting together a colorful webpage. By consistently employing principles of effective learning, educators will unlock the full potential of Web-based medical education.

Computer-Assisted Instruction↗
PubMed1996

Uncertainties in the link between global climate change and predicted health risks from pollution: hexachlorobenzene (HCB) case study using a fugacity model.

Industrial societies have altered the earth's environment in ways that could have important, longterm ecological, economic, and health implications. In this paper, we examine the extent to which uncertainty about global climate change could impact the precision of predictions of secondary outcomes such as health impacts of pollution. Using a model that links global climate change with predictions of chemical exposure and human health risk in the Western region of the United States of America (U.S.), we define parameter variabilities and uncertainties and we characterize the resulting outcome variance. As a case study, we consider the public health consequences from releases of hexachlorobenzene (HCB), a ubiquitous multimedia pollutant. By constructing a matrix that links global environmental change both directly and indirectly to potential human-health effects attributable to HCB released into air, soil, and water, we define critical parameter variances in the health risk estimation process. We employ a combined uncertainty/sensitivity analysis to investigate how HCB releases are affected by increasing atmospheric temperature and the accompanying climate alterations that are anticipated. We examine how such uncertainty impacts both the expected magnitude and calculational precision of potential human exposures and health effects. This assessment reveals that uncertain temperature increases of up to 5 degrees C have little impact on either the magnitude or precision of the public-health consequences estimated under existing climate variations for HCB released into air and water in the Western region of the U.S.

Biometry↗
PubMed2005

Influence of distributional shape of substance parameters on exposure model output.

Uncertainty of environmental concentrations is calculated with the regional multimedia exposure model of EUSES 1.0 by considering probability input distributions for aqueous solubility, vapor pressure, and octanol-water partition coefficient, K(ow). Only reliable experimentally determined data are selected from available literature for eight reference chemicals representing a wide substance property spectrum. Monte Carlo simulations are performed with uniform, triangular, and log-normal input distributions to assess the influence of the choice of input distribution type on the predicted concentration distributions. The impact of input distribution shapes on output variance exceeds the effect on the output mean by one order of magnitude. Both are affected by influence and uncertainty (i.e., variance) of the input variable as well. Distributional shape has no influence when the sensitivity function of the respective parameter is perfectly linear. For nonlinear relationships, overlap of probability mass of input distribution with influential ranges of the parameter space is important. Differences in computed output distribution are greatest when input distributions differ in the most influential parameter range.

Environmental Exposure↗
PubMed1995

Physical diagnosis skills of physicians in training: a focused assessment.

OBJECTIVE: To assess the proficiency of emergency medicine (EM) trainees in the recognition of physical findings pertinent to the care of the critically ill patient. METHODS: Fourteen medical students, 63 internal medicine (IM) residents, and 47 EM residents from three university-affiliated programs in Philadelphia were tested. Proficiency in physical diagnosis was assessed by a multimedia questionnaire targeting findings useful in emergencies or related to diseases frequently encountered in the ED. Attitudes toward diagnosis not based on technology, teaching practices of physical examination during EM training, and self-motivated learning of physical diagnosis also were assessed for all the EM trainees. RESULTS: With the exception of ophthalmology, the EM trainees were never significantly better than the senior students or the IM residents. They were less proficient than the IM residents in cardiology, and not significantly different from the IM residents in all other areas. For no organ system tested, however, did they achieve less than a 42.9% error rate (range: 42.9-72.3%, median = 54.8%). There was no significant improvement in proficiency over the three years of customary EM training. The EM residents who had received supervised teaching in physical diagnosis during training achieved a significantly higher cumulative score. The EM residents attributed great clinical importance to physical diagnosis and wished for more time devoted to its teaching. CONCLUSIONS: These data confirm the recently reported deficiencies of physical diagnosis skills among physicians in training. The results are particularly disturbing because they relate to EM trainees and concern skills useful in the ED. Physical diagnosis should gain more attention in both medical schools and residency programs.

Clinical Competence↗
PubMed2003

Associations of mass media exposure with family planning attitudes and practices in Uganda.

This study examines the associations between multimedia behavior change communication (BCC) campaigns and women's and men's use of and intention to use modern contraceptive methods in target areas of Uganda. Data are drawn primarily from the 1997 and 1999 Delivery of Improved Services for Health (DISH) evaluation surveys, which collected information from representative samples of women and men of reproductive age in the districts served by the DISH project. Additional time-trend analyses rely on data from the 1995 Uganda Demographic and Health Survey. Logistic regressions are used to assess the associations between BCC exposure and family planning attitudes and practices, controlling for individuals' background characteristics. To minimize the biases of self-reported exposure, the analyses also explore cluster-level indexes of the penetration of BCC messages in the community. Results indicate that exposure to BCC messages was associated with increased contraceptive use and intention to use. Some evidence of self-reported bias is found, and the pathways to fertility-related behavioral change appear different for women and men.

Adolescent↗
PubMed2001

Challenges influencing the future of endodontics. New technologies for endodontic education.

The major challenge of contemporary dental education is teaching students to transfer their acquired knowledge from one setting to another. New technology-based educational tools such as IMPACT, Interactive Multimedia Patient Case Tutor, developed at the Virginia Commonwealth University School of Dentistry, can assist in this educational paradigm shift by teaching students basic science in the context of patient dental problems. The interactivity of technology as used in the IMPACT program links students' basic science knowledge base to the description, understanding and solution of patient problems.

Computer-Assisted Instruction↗
PubMed2002

Content-based ultrasound image retrieval using a coarse to fine approach.

One of the current issues for picture archiving and communication systems (PACS) is extending retrieval technologies to deal with multimedia information. This is particularly important for medical applications that assist in diagnostic processes and pathology studies. Accordingly, this paper presents a new approach to content-based image retrieval (CBIR) for a clinical ultrasound image database (DB). The proposed algorithm consists of two stages so as to maximize the retrieval efficiency. In the first stage, a coarse retrieval is performed using the statistical characteristics of the wavelet coefficients that narrow the search by eliminating up to 70% of the total DB images. In the second stage, a fine retrieval is carried out using the Legendre moment of the global histogram pdf on the reduced image set preretrieved by the coarse retrieval. When tested on an abdominal ultrasound image DB and compared with various other methods, the proposed algorithm gave promising results for applying CBIR to clinical ultrasound images.

Humans↗
PubMed1994

Veterinary education in the era of information technology.

A major innovation in the delivery of the veterinary curriculum is being implemented at The University of Melbourne using the subject of systematic bacteriology and mycology as a pilot project. Students receive course information as interactive, multimedia databases. These consist of text and an associated library of catalogued digital images, movies and sounds. The databases employ a hypermedia information system to achieve efficient integration within and between subjects. The new delivery method encourages greater autonomy and more active learning roles for students than occurs in traditionally taught courses. Students will use their databases as the principal resource of information for undergraduate studies. A unique feature of this system for delivering the curriculum is that students will modify and expand their databases during the course. The ultimate aim is for students at graduation to receive, on disc, a copy of their own databases, adapted by themselves to their particular future professional needs. As graduate veterinarians they will continue to use their databases as a major resource for information and learning, thus providing continuity from undergraduate to continuing postgraduate education.

Animals↗
PubMed1998

A morphometric analysis of the posed smile.

A fundamental goal of orthodontics is to improve the smile, but no objective criteria exist to assess the lip-teeth relationship, establish objectives of treatment or measure treatment outcome. Here we propose a method to digitally measure the smile characteristics of orthodontic patients. Specifically, the 'posed smile' is measured. By definition the posed smile is voluntary and not elicited by an emotion. It can be a learned greeting or a signal of appeasement and can be sustained. The posed smile is reliably repeatable. The multimedia computer program for smile measurement we developed was based on studies of the utility of the smile photograph and the assessment of the lip-teeth characteristics of the posed smile in treated and untreated patients. On the computer screen a grid, or smile mesh, employs horizontal and vertical lines to measure eleven attributes of a smile. Not all orthodontically 'well-treated' patients with exemplary plaster casts exhibit desirable anterior tooth display while smiling. We suggest that the photographic analysis of an unstrained posed smile might be a standard orthodontic record.

Child↗
PubMed1997

Information retrieval in digital libraries: bringing search to the net.

A digital library enables users to interact effectively with information distributed across a network. These network information systems support search and display of items from organized collections. In the historical evolution of digital libraries, the mechanisms for retrieval of scientific literature have been particularly important. Grand visions in 1960 led first to the development of text search, from bibliographic databases to full-text retrieval. Next, research prototypes catalyzed the rise of document search, from multimedia browsing across local-area networks to distributed search on the Internet. By 2010, the visions will be realized, with concept search enabling semantic retrieval across large collections.

Abstracting and Indexing↗
PubMed1997

Information retrieval for patient care.

Doctors need clinical information during most consultations with patients, and much of this need could be satisfied by material from online sources. Advances in data communication technologies mean that multimedia information can be transported rapidly to various clinical care locations. However, selecting the few items of information likely to be useful in a particular clinical situation from the mass of information available is a major problem. Current information retrieval systems are designed primarily for use in research rather than clinical care. The design, implementation, and critical evaluation of new information retrieval systems for clinical care should be guided by knowledgeable clinical users.

Computer Communication Networks↗
PubMed1996

Impact of a public campaign on pre-hospital delay in patients reporting chest pain.

OBJECTIVE: To decrease pre-hospital delay in patients with chest pain. DESIGN: Population based, prospective observational study. SETTING: A province of Switzerland with 380000 inhabitants. SUBJECTS: All 1337 patients who presented with chest pain to the emergency department of the Hôpital Cantonal Universitaire of Geneva during the 12 months of a multimedia public campaign, and the 1140 patients who came with similar symptoms during the 12 months before the campaign started. MAIN OUTCOME MEASURES: Pre-hospital time delay and number of patients admitted to the hospital for acute myocardial infarction (AMI) and unstable angina. RESULTS: Mean pre-hospital delay decreased from 7h 50 min before the campaign to 4 h 54 min during it, and median delay from 180 min to 155 min (P < 0.001). For patients with a final diagnosis of AMI, mean delay decreased from 9 h 10 min to 5 h 10 min and median delay from 195 min to 155 min (P < 0.002). Emergency department visits per week for AMI and unstable angina increased from 11.2 before the campaign to 13.2 during it (P < 0.02), with an increase to 27 (P < 0.01) during the first week of the campaign; visits per week for non-cardiac chest pain increased from 7.6 to 8.1 (P = NS) during the campaign, with an increase to 17 (P < 0.05) during its first week. CONCLUSIONS: Public campaigns may significantly reduce pre-hospital delay in patients with chest pain. Despite transient increases in emergency department visits for non-cardiac chest pain, such campaigns may significantly increase hospital visits for AMI and unstable angina and thus be cost effective.

Angina, Unstable↗
PubMedDate not supplied

Converting laserdisc video to digital video: a demonstration project using brain animations.

Interactive laserdiscs are of limited value in large group learning situations due to the expense of establishing multiple workstations. The authors implemented an alternative to laserdisc video by using indexed digital video combined with an expert system. High-quality video was captured from a laserdisc player and combined with waveform audio into an audio-video-interleave (AVI) file format in the Microsoft Video-for-Windows environment (Microsoft Corp., Seattle, WA). With the use of an expert system, a knowledge-based computer program provided random access to these indexed AVI files. The program can be played on any multimedia computer without the need for laserdiscs. This system offers a high level of interactive video without the overhead and cost of a laserdisc player.

Audiovisual Aids↗
PubMedDate not supplied

Willow: a uniform search interface.

The objective of the Willow Project is to develop a uniform search interface that allows a diverse community of users to retrieve information from heterogeneous network-based information resources. Willow separates the user interface from the database management or information retrieval system. It provides a graphic user interface to a variety of information resources residing on diverse hosts, and using different search engines and idiomatic query languages through networked-based client-server and Transmission Control Protocol/Internet Protocol (TCP/IP) protocols. It is based on a "database driver'' model, which allows new database hosts to be added without altering Willow itself. Willow employs a multimedia extension mechanism to launch external viewers to handle data in almost any form. Drivers are currently available for a local BRS/SEARCH system and the Z39.50 protocol. Students, faculty, clinicians, and researchers at the University of Washington are currently offered 30 local and remote databases via Willow. They conduct more than 250,000 sessions a month in libraries, medical centers and clinics, laboratories, and offices, and from home. The Massachusetts Institute of Technology is implementing Willow as its uniform search interface to Z39.50 hosts.

Computer Communication Networks↗