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Digital Video (digital + video)
Terms modified by Digital Video Selected AbstractsPERSONAL DIGITAL VIDEO: A METHOD TO MONITOR DRUG REGIMEN ADHERENCE DURING HUMAN CLINICAL INVESTIGATIONSCLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY, Issue 12 2006Chad C Carroll SUMMARY 1Maintaining patient adherence to a drug regimen has proven to be difficult. Missed doses can impact drug efficacy and disease control, leading to increased health-care costs. 2During clinical drug trials, poor adherence could lead to false conclusions regarding drug efficacy. Therefore, the purpose of the present study was to determine the feasibility of using personal digital video cameras to monitor adherence to a medication regimen during a clinical investigation. 3Older men and women (60,78 years) participated in a double-blind, placebo-controlled trial to determine the effect of ibuprofen or paracetamol on skeletal muscle adaptations to chronic resistance exercise training. Patients took three daily doses of either a placebo or the maximal daily over-the-counter dose of ibuprofen (1.2 g/day) or paracetamol (4.0 g/day) for 12 weeks. Prior to beginning the study, subjects were trained to use a personal digital video camera to record their drug consumption. 4Subjects correctly recorded 4956 of 5375 doses, resulting in an average camera compliance rate of 92% (71,100%). 5We describe a method of monitoring adherence to a prescribed drug regimen during a clinical investigation. Camera compliance rates, which directly confirm drug consumption, were higher than what is typically obtained with other methods of monitoring adherence. This camera compliance method provides the investigator with a simple and convenient means to generate direct evidence of drug consumption. [source] 16 A Novel Approach to "See One, Do One": Multimedia Presentations before Procedure Workshops and SimulationACADEMIC EMERGENCY MEDICINE, Issue 2008Amita Sudhir We propose that residents and medical students are likely to gain more from a simulation experience or procedure workshop if they are given educational materials conveying key concepts to review beforehand. Several multimedia formats are available to accomplish this task. Digital video and Powerpoint presentations can be converted to podcasts with or without audio tracks using programs like Profcast, GarageBand, Camtasia, and Keynote. There are also procedure videos available from sources like the New England Journal of Medicine. Participants are provided these instructional materials via a secure web server or email attachment several days prior to the educational session. These presentations are kept short in length (no greater than 10-15 minutes) to optimize compliance while delivering information efficiently. They can be reviewed at the learner's convenience on a personal computer or on an iPod with video capability. This method can significantly reduce the time required for didactic teaching in a procedure workshop; for example, when medical students review a video on basic suturing before attending a suturing workshop, they are prepared to begin practicing with minimal initial instruction. Furthermore, conveying the same information repeatedly through different instructional methods can help learners consolidate knowledge, as in the case of a presentation provided to residents before a simulation session containing the basic clinical teaching points of the case. Participant feedback regarding these resources has been favorable. [source] Detection efficiency of multiplexed Passive Integrated Transponder antennas is influenced by environmental conditions and fish swimming behaviourECOLOGY OF FRESHWATER FISH, Issue 4 2009J. C. Aymes Abstract,,, The efficiency of a Passive Integrated Transponder (PIT)-tag detection system was tested during a 23-day experiment using a permanent digital video to record the passage of fish through multiplexed antennas. Coupling video to the PIT system allowed the detection of error sources and the correction of erroneous data. The efficiency of the detection system and its variation were investigated according to fish swimming speed, direction of movement and individual fish behaviour. Influence of time and environmental conditions on detection results were also checked. The PIT tag system was 96.7% efficient in detecting fish. Upstream movements were better detected (99.8%) than downstream movements (93.7%). Moreover, results showed that efficiency rate was not stable over the experiment; it was reduced on stormy days. Several sources of errors were identified such as sub-optimal orientation of the PIT tag relative to the antenna plane, the influence of fish swimming speed, individual fish behaviour and influence of environmental conditions. [source] The effects of alcohol expectancies on drinking behaviour in peer groups: observations in a naturalistic settingADDICTION, Issue 9 2005Sander M. Bot ABSTRACT Aims To study the functionality of alcohol expectancies in predicting drinking behaviour in existing peer groups of young adults in a ,naturalistic' setting. Design and setting Young adults were invited to join an experiment with their peer group in a bar annex laboratory. During a ,break' of 50 minutes in this experiment, their activities, social behaviour and drinking behaviour were observed with digital video and audio equipment. Participants Twenty-eight peer groups were involved in this study. A peer group consisted of seven to nine people, with relationships ranging from intimate relations and close friendships to being acquaintances. A total of 238 participants were involved. Measurements Information of the drinking behaviour from observations and questionnaire data on alcohol expectancies provide the opportunity to look at how and which expectancies are related to actual drinking patterns. Multiple regression and multi-level analyses were applied. Findings Expectancies on the positive and arousing effects of alcohol consumption were related to alcohol consumption in a naturalistic, social drinking situation, in addition to group effects of drinking. Expectancies on the negative and sedative effects of drinking, however, were not related to drinking. Conclusions The findings indicate that among young adults observed in a peer group and naturalistic drinking setting, positive expectancies about the effects of alcohol and expectancies about the effects of alcohol on arousal are related positively to drinking level. [source] TO DIVE OR NOT TO DIVE: SCUBA VERSUS ROV SAMPLING OF MACROALGAE AT 30M DEPTHJOURNAL OF PHYCOLOGY, Issue 2001Article first published online: 24 SEP 200 Spalding, H. L. Moss Landing Marine Laboratories, 8272 Moss Landing, Rd., Moss Landing, CA 95039 USA Remotely Operated Vehicles (ROVs) and enriched air Nitrox SCUBA diving have recently become available to researchers for studying the deep-water environment. Each use a different technique for collecting macroalgal abundance data: ROVs use collections and high-resolution digital video which can be quantified using an integrative laser and computer imagery program (high tech), while divers often count the densities of individuals and use a point contact method for sampling percent (%) cover in situ (low tech). While the types of data collected by both techniques are the same, the effects of the different sampling methods on data resolution are unknown. As part of a larger study on deep-water macroalgae in central California, I compared the abundance of common macroalgae (% cover of macroalgal groups and individuals/m2) collected by divers and the ROV Ventana at a depth of 30m at 3 locations in central California. Generally, there were no significant differences between diver and ROV data in the % cover of coralline Rhodophyta, non-coralline Rhodophyta, and Pleurophycus gardneri/m2. The use of a laser-calibrated computer imagery program and an ROV with user-controlled lighting greatly decreased lab analysis time, and a method for sampling macroalgal layers with the ROV was developed. Thus, ROVs with high-resolution digital video and supplemental macroalgal collections can be used to quantify deep-water algae as accurately as in situ divers, but without the limited dive time, depth limits, and physical demands of the latter. [source] The role of narrative in understanding digital video: An exploratory analysisPROCEEDINGS OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE & TECHNOLOGY (ELECTRONIC), Issue 1 2003Todd Wilkens Narrative is perhaps the oldest and most widely used form for organizing information and human experience, thus, it is not surprising that there is a significant body of research concerning narrative and its importance to comprehension and understanding. One important outcome of this research is the concept of narrative intelligence, the human tendency to fit experience into narrative form. This research is extremely relevant to information seeking in general and sense-making, in particular. This paper outlines the basic principles and research supporting the concept of narrative intelligence and its applicability to the ways in which people make sense of digital video. We explore relevant theory and research in sense-making, surrogates, narrative, and narrative intelligence and then present the preliminary results of two research studies. The first clarifies and operationalizes the concept of narrative as it relates to video. The second demonstrates how narrativity can have significant effects on information seeking and sense-making in digital video. Results from these studies have implications for how syntactic form can be used as a means of indexing digital video. [source] Renewing ethnographic film: Is digital video changing the genre?ANTHROPOLOGY TODAY, Issue 3 2001David MacDougall First page of article [source] Multimedia Emergency Bedside Ultrasound Quality Assurance FeedbackACADEMIC EMERGENCY MEDICINE, Issue 2009Stephen Leech Clear feedback is important for teaching the technical and interpretive skills of emergency bedside ultrasound. Using screen capture software (Snapz Pro X, Ambrosia Software Inc.), we create multimedia feedback videos for our users still in the training phase. These self-contained videos with voice-over instruction are made using either the still images or digital video that users submit for quality assurance. The videos are simple to make and allow for clear, focused feedback and personalized instruction with each study. Users see their images and visual feedback, and hear real-time audio instruction. This allows us to easily reinforce positive technique and interpretation, provide constructive comments, and review areas for improvement. The feedback videos are posted on a server, and links are emailed to users when new studies are reviewed. Users can review studies at their convenience with a minimal time commitment. Since switching from written to multimedia feedback, we have seen a marked improvement in our users' ultrasound skills and enthusiasm toward ultrasound. The following are examples of reviewed studies: http://www.emedsonar.com/qa/video_review/ziggy_fast_091408.mov. http://www.emedsonar.com/qa/video_review/110308/ziggy_jd_gb_nm_092408.mov. http://www.emedsonar.com/qa/video_review/110308/wiepert_thundiyil_ao_cp_092508.mov. [source] Public IP network infrastructure evolutions to support emerging digital video servicesBELL LABS TECHNICAL JOURNAL, Issue 2 2009Marc Verhoeyen Of all the services offered over a worldwide public network, digital video-based services, even at this early stage of development, are growing at such an astonishing rate that they will soon constitute the largest portion of Internet traffic. We are witnessing this today with the Internet television (TV) phenomenon, with YouTube, Netflix's online offering, and BBC's iPlayer serving as prominent examples. To optimize video-dominated networks with respect to the required transport capacity (and also to reduce the response time the end user experiences), these services need to be supported by new networking capabilities. Caching in conjunction with specific unicast and multicast techniques for ingress and egress traffic can achieve this goal. In this paper we discuss how, explicitly by using cache cooperation techniques, we can deal with heterogeneous content preferences among end users. The paper shows simulation results and discusses relevant parameters with respect to the Internet TV use cases mentioned. Finally, it provides an outlook on the longer term and demonstrates that investment in these new capabilities is future-safe. © 2009 Alcatel-Lucent. [source] | ||||||||||||||||