The Reliability of Measurements of Foraging Behavior in Shorebirds: A Comparison of Real-Time and Slow-Motion Recordings

Waterbirds ◽  
2021 ◽  
Vol 44 (1) ◽  
Author(s):  
Ivana Novčić ◽  
Sara Krunić ◽  
Ana Golubović ◽  
Katarina Zorić ◽  
Mark E. Hauber
2010 ◽  
Vol 20 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Glenn Tellis ◽  
Lori Cimino ◽  
Jennifer Alberti

Abstract The purpose of this article is to provide clinical supervisors with information pertaining to state-of-the-art clinic observation technology. We use a novel video-capture technology, the Landro Play Analyzer, to supervise clinical sessions as well as to train students to improve their clinical skills. We can observe four clinical sessions simultaneously from a central observation center. In addition, speech samples can be analyzed in real-time; saved on a CD, DVD, or flash/jump drive; viewed in slow motion; paused; and analyzed with Microsoft Excel. Procedures for applying the technology for clinical training and supervision will be discussed.


1995 ◽  
Vol 80 (3) ◽  
pp. 548-551 ◽  
Author(s):  
Sorin J. Brull ◽  
David G. Silverman

Author(s):  
Lisa-Marie Schütz ◽  
Geoffrey Schweizer ◽  
Henning Plessner

The authors investigated the impact of video speed on judging the duration of sport performance. In three experiments, they investigated whether the speed of video presentation (slow motion vs. real time) has an influence on the accuracy of time estimation of sporting activities (n1 = 103; n2 = 100; n3 = 106). In all three studies, the time estimation was more accurate in real time than in slow motion, in which time was overestimated. In two studies, the authors initially investigated whether actions in slow motion are perceived to last longer because the distance they cycled or ran is perceived to be longer (n4 = 92; n5 = 106). The results support the hypothesis that the duration of sporting activities is estimated more accurately when they are presented in real time than in slow motion. Sporting officials’ judgments that require accurate time estimation may thus be biased when based on slow-motion displays.


2008 ◽  
Vol 22 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Jenny O ◽  
Krista J. Munroe-Chandler

The current study tested the timing element of the PETTLEP approach to motor imagery (Holmes & Collins, 2001) by examining the effects of 3 imagery conditions on the performance of a soccer dribbling task. The imagery conditions were also compared with physical-practice and control-group performance. Ninety-seven participants were randomly assigned to 1 of 5 conditions: real-time imagery, slow-motion imagery, slow motion concluded with real-time imagery, physical practice, or control. Results indicated that all 4 experimental groups significantly improved time and error performance to the same degree after the intervention. The control group significantly improved time but not error performance from pre- to post-intervention. The results of the current study provide inconclusive findings related to the timing element of the PETTLEP approach to motor imagery, however, and do suggest that slow motion might be a viable imagery characteristic. Limitations regarding the examination of slow-motion imagery, possible implications of its use, and suggestions for future image-speed research are discussed.


Screen Bodies ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 87-91
Author(s):  
Jiaying Sim

As part of the 2014 GENERATION project celebrating the past twenty-five years of contemporary art in Scotland, Douglas Gordon’s exhibition, “Pretty much every film and video work from about 1992 until now,” took centerstage at the Gallery of Modern Art in Glasgow. Gordon contributed to the dialogue with a unique installation showcasing his twenty-two years of artistic endeavors through 101 different-sized old television sets elevated on old plastic beer crates, simultaneously screening 82 video and film works. The screens flickered and lit the dark main gallery as the visual works played on loop—some with sound, some without, some in slow motion. The exhibition included such works as 24 Hour Psycho (1993), Between Darkness and Light (After William Blake) (1997), Play Dead; Real Time (2003), Henry Rebel (2011), Silence, Exile, Deceit: An Industrial Pantomime (2013) and emphasized how Gordon’s collection has grown since its first exhibition from 1999 in Poland and will continue to do so, as he updates the videos and films.


2020 ◽  
Vol 53 (7-8) ◽  
pp. 1059-1069
Author(s):  
Vibha Bhatia ◽  
Jagjit Singh Randhawa ◽  
Ashish Jain ◽  
Vishakha Grover

Postural inaccuracies in persistent dental tasks indicated an upsurge in the prevalence of musculoskeletal disorders in dentists. This makes it imperative to restrain awkward postural movements while working. Biased results in self-reporting surveys; discomfort, expense, and time consumption involved in using wearable sensors; and expert’s opinion are required in observational methods. Hence, it is important to use significantly reliable, cheap technology as a substitute to overcome the shortcomings of the mentioned techniques. In this study, the markerless Kinect V2–based system was developed and compared with the conventional imaging technique for real-time postural assessment of dental seating tasks. The study assessed the angle parameters related to the dentist’s bodily movement of upper arm, lower arm, wrist, neck, and trunk. Ten dentists from the local dental institution volunteered for the study. Dentists were monitored with both techniques while performing real-time dental procedures. The agreement between the techniques was assessed using Bland–Altman plot at 95% bias, Pearson’s (r1) and concordance (r2) correlation coefficients, mean difference, and percentage error. For conclusive agreement analysis, contingency coefficient, proportion agreement index, Cohen’s kappa, and Mann–Whitney U at 95% confidence interval (CI) were evaluated. Data acquired from both techniques possessed strong correlations (r1 and r2 >0.90). Good agreement in Rapid Upper Limb Assessment data using Cohen’s kappa (0.67) at standard Landis and Koch’s scale was also observed. Postural analysis of slow-motion tasks like dentistry using the Kinect V2 system proved to be unobtrusive and efficient. This may be used by dentists to have periodic postural check. In future, Kinect V2–based feedback system may be used to develop an assistive technology using predictive algorithms, which may help in reducing the probability of occurrence of work-related musculoskeletal disorders in dentists.


2018 ◽  
Vol 11 (2) ◽  
pp. 149-170 ◽  
Author(s):  
Marisa Cheng

Motion-capturing technology has been traditionally used in the field of sports for the analysis of athletes’ body movements. The application of this multimodal tool to the field of musical pedagogy, however, has yet to be widely explored. Historically, music teachers have been using abstract language such asthick lines, for example, to describe melodic phrases. Thesethick linescan function as mental signposts or cues to help a performer navigate through a particular piece especially during performances. Concepts such asrubato– the stretching of time – for instance, are more challenging to describe in terms of concrete lines or shapes, however. Because the push and pull ofrubatois so subtle, it can sometimes be challenging to pinpointrubatoand maximize its effectiveness. Thus, in addition to listening to the coach’s verbal explanations, it can be helpful to see the teacher’s gestures displayed simultaneously alongside their students’ gestures during music lessons. TheLeapmotionsoftware provides visual feedback in real time and can be played back in slow motion. This device functions much like a mirror, as the performers’ gestures reflect onto the screen in real time. At the same time, their teacher’s gestures can also be juxtaposed onto the screen as a reference. Details of the speed and the precision of therubatotiming can be seen on the screen as well. More importantly,Leapmotioncan be a useful source of feedback in the practice room where the teacher is not present; students can record precise gestures during their lessons and revisit what they had learned when they are alone. In this sense, students would not feel lost in the practice room during the week, and they could also hone their music analysis skills through the examination of their body movements. This study aims to catalyse the learning process and to revolutionize the traditional methods of daily music practice.


1995 ◽  
Vol 80 (3) ◽  
pp. 548-551 ◽  
Author(s):  
Sorin J. Brull ◽  
David G. Silverman

2014 ◽  
Vol 46 ◽  
pp. 696
Author(s):  
Danielle C. Stern ◽  
Ryan Z. Amick ◽  
Samantha D. Jansen ◽  
Michael J. Jorgensen ◽  
Jeremy A. Patterson

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