Video Playback Research Articles

Optimization of Communication Mode for Ethnic Sports and Cultural Development in the Age of Artificial Intelligence

Abstract With the development of artificial intelligence technology, the field of cultural communication is also gradually becoming widely used in artificial intelligence-related technologies. Aiming at the phenomenon of lagging development of national sports culture, this paper proposes a technical framework for optimizing the communication mode of national sports culture development with data collection and accurate information-pushing technology as the core. In order to collect data, the social network is transformed into a network graph model, and the Markov chain Monte Carlo method is used to ensure random and probabilistic sampling. The accuracy of prediction results is improved by establishing user profiles, using support vector machines, and combining the real-time computing framework to develop an accurate information delivery model. In the analysis of the development level of China’s wushu culture communication, it can be learned that the total reading volume of wushu culture-related topics on the microblogging platform totaled about 4.81 billion, the total discussion volume was 431,000, and the video playback volume of the related issues on the Jieyin platform reached 534 million times. The average value of the overall evaluation of the soft power of wushu culture is 3.83, which is close to the “good” evaluation level. Combined with intelligent technologies such as data collection and precise information pushing, the communication of Wushu culture has achieved better results.

Innovation of Media Learning Islamic Religious Education Based On Audiovisual

Students have different levels of material understanding, including in understanding monotonous Islamic Education materials using lecture methods. Sometimes students find it difficult to capture what teachers describe, especially in complex materials such as fiqh and long materials such as islamic cultural history. The purpose of this research is to conduct a learning innovation to address students' problems related to material understanding. The innovation that will be discussed in this article is the development of audiovisual media for Islamic Religious Education (PAI). The research method useslibrary research collectedfrom books and journals. With the development of audiovisual media innovation, it is hoped that students can better understand islamic education materials and provide a new atmosphere in learning. As a result of this study with technological developments, accessing audivisual media in learning is easier. The most popular site that provides audiovisual media access is Youtobe. The role of educators in the playback of learning videos as mentors. So that with this medium can shape the effectiveness of student learning.

Development of Web-Based Learning Media on The Subject of Islamic Cultural History Class X

This research was conducted using the R & D (Research and Development) approach or commonly known as development research to produce a product. This research aims to develop a website that is intended as a learning media. This website is named "Haistudent.com" which has supporting features such as video playback to assignment collection in 1 website. The resulting development product consists of two types, namely 1) Book: Haistudent.com website usage guide, 2) Software: a learning website called "Haistudent.com". This website was developed according to the current needs of teachers and students, as well as paying attention to aspects of feasibility, practicality and effectiveness of the product.
 The development of web-based learning media on the subject of Islamic cultural history class X was developed using the ADDIE development model. The ADDIE research model is considered appropriate, because the results of the product developed are learning media not software engineering. To determine the feasibility of the product, a validation test was conducted by media experts, material experts and linguists. The questionnaire research instrument was used to determine the results of the product practicality test. Meanwhile, to find out the effectiveness test, through the pre-test and post-test instruments then processed using SPSS by conducting normality tests and parametric tests.
 The results obtained from the validation results of media experts (90%), material (94.6%) and language (100%) in the feasibility test obtained an overall result of 94.87% with a very feasible category. While the results in the practicality test obtained a result of 92.36% with a very practical category. While in the effectiveness test using the T test with a significance of 0.001 ≤ 0.05. This means that these results show that there is a difference in the results of the pre-test and post-test data. This proves that the use of the website "Haistudent.com" is very effective for improving student learning outcomes

Propelling negotiation skills modules in construction engineering programs: Reflections and supporting tools for educators towards an enhanced effective training

This paper aims to provide a detailed account of our experience in implementing a negotiation module in an optional course of Management Skills in the Master's Degree in Structural & Construction Engineering program at the Universitat Politècnica de Catalunya and critically evaluate its effectiveness and impact on students' personal and professional development by triangulating experiences, surveys, and interviews. Based on an analysis of university curricula, the research explores effective teaching strategies, including Role-Play Simulation and Multi-Disciplinary Case Studies, which were highly valued by students. Video Recording and Playback, Peer Feedback, and Facilitator-led Discussions emerged as the most effective evaluation methods.

Course Design Approaches and Behavioral Patterns in Massive Open Online Courses for Professional Learning

Despite their growing importance, differential, process-oriented research on Massive Open Online Courses (MOOCs) for professional learning is scarce. This paper explores learner behavior in Enterprise MOOCs using lag sequential analysis. Data from 13 MOOCs on business and technology-related topics with a total of N = 72,668 active learners were examined. Starting from consistent high-level behavioral patterns, a deeper analysis reveals variations in interaction sequences according to the underlying course design approach. Lecture-oriented, system interaction-oriented, and discussion-oriented courses share a set of common patterns but also differ in various interaction sequences. Results point towards an isolated role of video playbacks across all course clusters, consumerist patterns in lecture-oriented courses, and a positive influence of metacognitively oriented interactions on learning outcomes. Accordingly, initial design recommendations include integrating interactive instructional elements in videos, promoting learner engagement in lecture-oriented courses, and fostering metacognition. Connecting interaction and achievement data may uncover promising behavior patterns that can be further supported by course design. Based on the initial findings, implications for future research and development are discussed.

Self-Supervised Motion Perception for Spatiotemporal Representation Learning.

In this study, we propose a novel pretext task and a self-supervised motion perception (SMP) method for spatiotemporal representation learning. The pretext task is defined as video playback rate perception, which utilizes temporal dilated sampling to augment video clips to multiple duplicates of different temporal resolutions. The SMP method is built upon discriminative and generative motion perception models, which capture representations related to motion dynamics and appearance from video clips of multiple temporal resolutions in a collaborative fashion. To enhance the collaboration, we further propose difference and convolution motion attention (MA), which drives the generative model focusing on motion-related appearance, and leverage multiple granularity perception (MG) to extract accurate motion dynamics. Extensive experiments demonstrate SMP's effectiveness for video motion perception and state-of-the-art performance of self-supervised representation models upon target tasks, including action recognition and video retrieval. Code for SMP is available at github.com/yuanyao366/SMP.

Experimental study on the effect of visual information of source image to evaluate the annoyance of aircraft noise

Laboratory tests in anechoic chambers are effective for evaluating environmental noise. In the actual environment, it is said that human reactions are greatly influenced not only by a sense of hearing but also by various senses, especially visual sensation. In this study, we experimentally evaluated the annoyance of environmental noise using an audio-visual simulation system that combines a three-dimensional sound field system in an anechoic room and a video playback system equipped with a dome-shaped screen. Previous studies have shown that the annoyance of traffic noise changes depending on the image presented, but aircraft noise is less affected by visual effects than other traffic noises. Therefore, in this study, we focused on aircraft noise and made experimental investigations. We considered two reasons why the annoyance evaluation of aircraft noise seems to be less affected by vision: the small size of the visible image, and the high sound power level relative to the image. Accordingly, we experimentally evaluated the difference in perception of annoyance due to changes in the image size by presenting images of artificially changed sizes of aircraft images as stimuli.

Comparison of Effectiveness of Visual and Sign Motivation on the Oral Hygiene of Students.

The aim of the study is to compare the effectiveness of visual and sign motivation on the oral hygiene of students with hearing and speech impairment studying in special schools of Meerut, Uttar Pradesh, India. A cross-sectional study was carried out on 200 students. The sample was divided into two groups. Ethical clearance was obtained from the Institutional Ethical Committee. Data were collected at three points of time-at baseline, 1st and 3rd month. In the age-group, 8-13 years, on intergroup comparison of mean oral hygiene index (OHI) score, no significant difference was observed on the first visit (p-value of 0.351) and second visit, respectively (p-value of 0.687), but on comparing the mean simplified oral hygiene index (OHI-S) score on third visit significant difference was observed (p-value of 0.03) and in the age 14-18 years, on intergroup comparison of mean OHI-S score no significant difference was observed on first visit (p-value of 0.593) and second visit, respectively (p-value of 0.404), but on comparing the mean OHI-S score on third visit, significant difference was observed (p-value of 0.018) Both the groups have shown that there was the positive impact of reinforcement on the oral hygiene of students in this age-group as well. There was a significant improvement in oral hygiene status and a significant improvement in participant satisfaction toward oral health in both groups. Sign language video playback is not as effective and efficient in improving the maintenance of oral health in hearing and speech-impaired children as compared to sign language. This study has helped in the better understanding of different methods of maintaining good oral hygiene of hearing and speech-impaired children. Singh R, Saraf BG, Sheoran N, et al. Comparison of Effectiveness of Visual and Sign Motivation on the Oral Hygiene of Students. Int J Clin Pediatr Dent 2023;16(5):671-677.

Altitudinal differences in foraging decisions under predation risk in great tits

Abstract Foraging decisions under risk of predation are crucial for survival as predation risk can contribute to a reduction of food intake over time leading to a trade-off between starvation and predation. Environmental variation can provoke changes in food accessibility or predation risk that will in turn affect foraging decisions. Specifically, less predictable or harsher environments, such as those found at high elevation, should lead to more risk-prone foraging in order to prevent risk of starvation, but empirical confirmation of this hypothesis is lacking. In the current study, we used video playbacks combined with an automatic feeder to measure continuous foraging choices between control and predator videos by wild great tits originating from high and low elevations and tested under controlled conditions. Great tits discriminated between two conditions representing differences in predation risk and visited the feeder less frequently when a predator was shown. Moreover, we found that birds from low elevation populations were more risk-averse and visited the feeder significantly less when a predator video playback was broadcasted compared with high elevation individuals. This elevation-related contrast was also dependent on the season, body mass, and fat reserves of individuals, and was more marked in females. Furthermore, adults visited the feeder less in the presence of a predator compared with yearlings. These results are consistent with predictions from life-history theory and starvation–predation trade-off hypotheses and could have implications for individual movements and population dynamics in changing environments.

Optimizing video feedback for snatch technical error correction in young weightlifters: Comparing the effectiveness of different video playback speeds

Researchers are actively recommending optimal modes of usage for techno-pedagogical tools to ensure that athletes reap the benefits of technology in their training. In this study, we investigated the most effective video feedback viewing speed among normal-speed (NS), half-speed (HS), and quarter-speed (QS), for technical error correction in young weightlifters during the snatch movement. A total of 37 weightlifters (25 boys and 12 girls), aged 11–12 years, were randomly divided into three groups, namely the normal-speed (control group), the half-speed, and the quarter-speed group. Participants completed a pretest (T0), a seven-week snatch learning unit, and a posttest (T1), as well as a retention test one week later (T2). Video-mediated technical analysis of the snatch movement was conducted using the Kinovea motion analysis software. The main results showed that weightlifters who viewed their feedback videos at a quarter of the normal speed (QS) achieved significantly greater improvements in the displacement of the bar in the first pull Dx2 (T1 vs. T0: 27.41 ± 26.10%, Hedges’ g = 0.87, p < 0.05; T2 vs. T0: 24.34 ± 27.11%, Hedges’ g = 1.07, p < 0.05) and the vertical displacement VTR (T1 vs. T0: 22.89 ± 14.16%, Hedges’ g = 1.16, p < 0.05) compared to those who viewed the videos at NS or HS. These findings suggest that slowing down video feedback playback to a quarter of the normal speed can be an effective strategy for enhancing technical error correction in young weightlifters.

PENCEGAHAN HOSPITALISASI BERULANG PENDERITA GAGAL JANTUNG KRONIK MELALUI PROGRAM EDUKASI DALAM RANGKA WORLD HEART FAILURE DAY DI RUANG TUNGGU POLIKLINIK JANTUNG RSUD TABANAN

Chronic heart failure is a progressive syndrome that can reduce a person's quality of life and affect the economy and health. Risk factors for chronic heart failure are hypertension, obesity, smoking, and diabetes. The biggest cause of death at the age of 60 years is non-communicable diseases such as coronary heart disease, heart failure, hypertension, and stroke. Knowledge about daily care and adherence to treatment plays an important role in reducing morbidity and mortality in heart failure sufferers. Register data in the heart polyclinic and ICCU (Intensive Cardiac Care Unit) room at Tabanan District Hospital during 2020-2021 showed an increase in the number of re-hospitalizations for heart failure sufferers and a decrease in routine visits by heart failure sufferers to the polyclinic during the pandemic. Data from short interviews with heart failure sufferers and accompanying families or patient caretakers revealed a lack of knowledge about heart failure care and the importance of routine control. Partners caring for heart patients at Tabanan Hospital have never received training regarding heart disease and preventing the progression of heart disease and have experienced Difficulty in keeping family business bookkeeping to support the family economy. The PKM method is through training on heart disease, conselling, training on periodic body weight (BB) measurements, distribution of automatic weight measuring tools, and video playback which begins with a pre-test and ends with a post-test to measure the success/output of PKM which is carried out at the same time as World Heart Failure Awareness Day or World Heart Failure Day is May 3, 2022.

Reliability and Measurement Error of the Qualitative Analysis of Single Leg Loading (QASLS) Tool For Unilateral Tasks.

Movement quality assessment is popular within clinical and sporting practice, due to the contribution diminished or suboptimal movement quality is believed to have on musculoskeletal (MSK) injury risk. Various movement quality assessments exist, many are limited to bilateral or jumping movements evaluation. Qualitative analysis of single leg loading (QASLS) is a new clinical assessment tool for unilateral tasks that utilizes a dichotomous scoring system of ten questions relating to the segmental body regions of the trunk, lower and upper limb. To determine the intra and inter-rater, within- and between-session reliability of the QASLS tool during two unilateral movement tasks, and provide insight to measurement error and smallest detectable difference (SDD). Reliability Study. Fifteen healthy females (mean age 19 years SD2; height 167 cm, +/- 6; weight 56 kg, +/- 6) completed two unilateral tasks, single leg squat (SLS) and single leg landing (SLL), within session data collection occurred on the same day, with between session data collection occurring seven days later. Tasks were scored with the QASLS tool via video playback. Intra-Class correlation coefficients (ICCk,3) were used to measure within and between session reliability, and Kappa coefficients and percentage of exact agreement (PEA%) were used to determine intra and inter-rater reliability. Standard error of measurement (SEM) and the SDD for the compound score of each limb was calculated. Within session reliability of QASLS scores was good (ICC = 0.82-0.86) for SLS and moderate (ICC = 0.67-0.87) for SLL. Between session reliability was moderate (ICC = 0.69-0.87) for SLS and excellent (ICC = 0.92-0.93) for SLL. SEM was less than 1 point, and SDD for compound score ranging from 1.0-2.5 points. Intra-rater agreement of compound QASLS score was near perfect (k = 0.85-100; PEA% 90-100%) and agreement of individual components was substantial- near perfect (k = 0.13-0.74; PEA% 78-100%). Inter-rater agreement for compound QASLS scores ranged from non-substantial (k = 0.13-0.74; PEA% 43.3-90%) for SLS and non-slight (k =0.03-0.17; PEA% 43.3-60%) for SLL. The QASLS movement analysis tool can be used to analyze movement quality during two unilateral loading tasks with moderate to excellent within and between session reliability. PEA% was acceptable for inter-rater agreement, however rater education training is recommended to develop more acceptable levels of reliability. 3.

Continuous Gaze Tracking With Implicit Saliency-Aware Calibration on Mobile Devices

Gaze tracking is a useful human-to-computer interface, which plays an increasingly important role in a range of mobile applications. Gaze calibration is an indispensable component of gaze tracking, which transforms the eye coordinates to the screen coordinates. The existing approaches of gaze tracking either have limited accuracy or require the user's cooperation in calibration and in turn hurt the quality of experience. We in this paper propose vGaze, continuous gaze tracking with implicit saliency-aware calibration on mobile devices. The design of vGaze stems from our insight on the temporal and spatial dependent relation between the visual saliency and the user's gaze. vGaze is implemented as a light-weight software that identifies video frames with "useful" saliency information, sensing the user's head movement, performs opportunistic calibration using only those "useful" frames, and leverages historical information for accelerating saliency detection. We implement vGaze on a commercial mobile device and evaluate its performance in various scenarios. The results show that vGaze can work at real time with video playback applications. The average error of gaze tracking is 1.51 cm (2.884 degree) which decreases to 0.99 cm (1.891 degree) with historical information and 0.57 cm (1.089 degree) with an indicator.

Corticospinal excitability during observation of basketball free-throw movement: Effects of video playback speed and stimulus timing.

Transcranial magnetic stimulation studies have indicated that action observation (AO) modulates corticospinal excitability. Although a few previous studies have shown that the AO of simple motor movements at a slow playback speed facilitates corticospinal excitability more than that at normal playback speed, it is unclear if this effect occurs during the AO of sport-related complex movements. Therefore, we investigated the changes in the motor evoked potential (MEP) amplitudes of the flexor carpi radialis (FCR) and abductor digiti minimi (ADM) muscles during the AO of a basketball free-throw movement at three different playback speeds (100%, 75%, and 50% speeds). Additionally, we evaluated the effects of stimulus timing (holding the ball vs. releasing the ball for shooting) and motor expertise (expert basketball players vs. novices) on the MEP amplitude during the AO. Our results demonstrated that regardless of motor expertise, the MEP amplitude of the FCR muscle was significantly smaller in the 50% speed condition than in the 100% condition. In the ADM muscle, the MEP amplitude was significantly larger when the ball was held after dribbling than when the ball was released. Therefore, it is suggested that corticospinal excitability in specific muscles during the observation of complex whole-body movements is influenced by video playback speed and stimulus timing.

Three-Phase Video-Assisted Multidisciplinary Team Debriefing in High-Fidelity Blast Simulation through the Advocacy and Inquiry Method.

Video-assisted debriefing (VAD) combined with the advocacy and inquiry (A&I) technique is a tool that allows video playback of selected segments of a simulation, thereby helping the debriefers structure the session. However, no consensus exists on how to optimally perform a team debriefing. The authors demonstrate and describe the methodology of A&I debriefing in an instructional simulated blast scenario and assess the impact of VAD on residents' technical and nontechnical skills. After institutional review board approval, the authors performed a study with 50 residents who were randomly assigned to 2 groups. Group 1 (control, or no VAD; n = 25) consisted of residents who received oral debriefing by 1 independent faculty member without the recorded video of the simulation. Group 2 (intervention, or VAD; n = 25) consisted of residents who received VAD from the second independent faculty member. These residents repeated the same simulation scenario 1 week after their debrief. Every resident was assessed on the primary and secondary survey, as well as the nontechnical skills, based on the integrated skills score. The VAD group presented significantly higher values for the integrated skills score ( P < 0.001) compared with the no-VAD group. This demonstration of 3-phase VAD emphasizes important aspects of coherent simulation-based training: psychologic safety, A&I, reflection, cognitive frames, prebrief, main debrief, summary, and translation of new discoveries to real-life patient care. The unique audiovisual aspect of the VAD enhanced residents' performance in simulation.

Model and characterization for dynamic non-uniform pixel capacitance in electrowetting displays

Electrowetting display (EWD) is a new reflective display device that has the advantages of fast response speed, low power consumption, and video playback. The pixel capacitance of EWDs changes with the flow of internal liquid during the pixel-on process, which affects the pixel response speed. To characterize the change in pixel capacitance and analyze the relationship between pixel capacitance and pixel response speed, we established a dynamic capacitance model during the pixel-on process, derived the integral equation of pixel capacitance, and demonstrated the validity of the model. Meanwhile, we also investigated the effects of the initial angle formed between the oil and the pixel wall, and the relative permittivity of the oil and the hydrophobic insulating layer on the pixel capacitance, respectively. Results showed that the pixel capacitance increased as the initial angle and the relative permittivity of the oil and hydrophobic insulation layers increased. In addition, when the initial angle is 0. 4π and the aperture ratio exceeded 30%, the time required for the pixel to reach the corresponding aperture ratio was the shortest. Moreover, the smaller the relative permittivity of hydrophobic insulating layer, the shorter time required for the pixel to reach the corresponding aperture ratio.

Chronotate: An open-source tool for manual timestamping and quantification of animal behavior

A core necessity to behavioral neuroscience research is the ability to accurately measure performance on behavioral assays, such as the novel object location and novel object recognition tasks. These tasks are widely used in neuroscience research and measure a rodent’s instinct for investigating novel features as a proxy to test their memory of a previous experience. Automated tools for scoring behavioral videos can be cost prohibitive and often have difficulty distinguishing between active investigation of an object and simply being in close proximity to an object. As such, many experimenters continue to rely on hand scoring interactions using stopwatches, which makes it difficult to review scoring after-the-fact and results in the loss of temporal information. Here, we introduce Chronotate, a free, open-source tool to aid in manually scoring novel object behavior videos. The software consists of an interactive video player with keyboard integration for marking timestamps of behavioral events during video playback, making it simple to quickly score and review bouts of rodent-object interaction. In addition, Chronotate outputs detailed interaction bout data, allowing for nuanced behavioral performance analyses. Using this detailed temporal information, we demonstrate that novel object location performance peaks within the first 3 s of interaction time and preference for the novel location becomes reduced across the test session. Thus, Chronotate can be used to determine the temporal structure of interactions on this task and can provide new insight into the memory processes that drive this behavior. Chronotate is available for download at: https://github.com/ShumanLab/Chronotate.

Research on the Copyright Value Evaluation Model of Online Movies Based on the Fuzzy Evaluation Method and Analytic Hierarchy Process

With the rapid development of video websites, copyright management and the protection of online movies are facing severe challenges. With the strengthening of intellectual property protection, copyright value management has become necessary for the transformation of copyright value, which is of great significance for the healthy development of the industry. Based on the current development status of China’s online movie offerings, online movies were collected from China’s three major video platforms between 2016 and 2018 as research objects, and a set of scientific and effective online movie copyright value assessment methods and systems are proposed through the fuzzy comprehensive evaluation method, analytic hierarchy process, Delphi method, and empirical research. In this study, using data collected through a questionnaire survey, a fuzzy evaluation method is applied to establish the evaluation index of the copyright value of online movies. Moreover, according to the Delphi method, expert suggestions are collected, the indexes are scientifically corrected in the market, and the weights of the copyright value evaluation index of online movies both before and after broadcasting are calculated using the analytic hierarchy process. On this basis, by applying big data analysis, the communication effect index, prebroadcast value score evaluation index, and postbroadcast value evaluation index are deeply analyzed, and the copyright value evaluation model of online movies both before and after broadcasting is established. Finally, based on market feedback data, the evaluation models are revised and empirically tested to verify the scientificity and rationality of the copyright evaluation method proposed in this study. The results show that the proposed methods and systems for evaluating the copyright value of online movies are scientific and effective. This study provides new insights for all types of movie and television production organizations and video playback platforms on how to design effective copyright value evaluation models and practice methods for online movies.

Context-guided coarse-to-fine detection model for bird nest detection on high-speed railway catenary

As a critical component of ensuring the safe and stable operation of trains, the detection of bird’s nests on the rail catenary has always been essential. Low-resolution images and the lack of labelled data, however, make it difficult to detect smaller bird’s nests (those occupying small pixels in the input image). Previous solution relies on manual online patrol or offline video playback, which severely limits the detection efficiency. Previously, this challenge was addressed by manual online patrol or offline video playback, which severely limits detection efficiency. We propose in this work a context-guided coarse-to-fine detection model (CG-CFDM) for solving the bird’s nest detection problem. This solution consists of a context reasoning module and a coarse-to-fine detection network. By detecting domains and matching templates, the context reasoning module generates new labelled context bounding boxes, thereby reducing the burden of annotation. As a result of its delicately designed architecture and powerful representation learning ability, this trained coarse-to-fine detection network further facilitates the detection of bird’s nests in an efficient and accurate manner. Extensive experiments demonstrate that the proposed approach is superior to existing methods in terms of performance and has a great deal of potential for detecting bird’s nests.

Sentiment Analysis on Online Videos by Time-Sync Comments.

Video highlights are welcomed by audiences, and are composed of interesting or meaningful shots, such as funny shots. However, video shots of highlights are currently edited manually by video editors, which is inconvenient and consumes an enormous amount of time. A way to help video editors locate video highlights more efficiently is essential. Since interesting or meaningful highlights in videos usually imply strong sentiments, a sentiment analysis model is proposed to automatically recognize sentiments of video highlights by time-sync comments. As the comments are synchronized with video playback time, the model detects sentiment information in time series of user comments. Moreover, in the model, a sentimental intensity calculation method is designed to compute sentiments of shots quantitatively. The experiments show that our approach improves the F1 score by 12.8% and overlapped number by 8.0% compared with the best existing method in extracting sentiments of highlights and obtaining sentimental intensities, which provides assistance for video editors in editing video highlights efficiently.