Video Recordings Research Articles

Teacher’s Use of English and Spanish Interactive Strategies during Wordless Shared Book Reading: Relations to Emergent Bilingual Children’s Responses

Little attention has been paid to describing the ways early childhood education (ECE) teachers implement interactive strategies and the use of Spanish and English, in real time, to support Spanish–English emergent bilingual children’s contributions to shared book reading interactions. Video recordings from 19 ECE classrooms during shared book reading were used to conduct sequential analysis to examine the different types of interactive strategies (e.g., questions, extensions) implemented by bilingual ECE teachers and emergent bilinguals’ responses to these strategies. This study found that teachers’ interactive strategies may reflect a degree of reciprocity, with teachers and children sensitively attuned to one another’s contributions in real time. Teachers’ questions in English and Spanish were related to emergent bilinguals’ responses across a wide range of language complexity. Similarly, teachers and emergent bilinguals tended to respond to one another in the language of the prior utterance, suggesting teachers and emergent bilinguals are attuned to the contributions of one another. By examining teacher–child dynamics, this study produced results that can address issues that may have direct, translatable implications for ECE practice and intervention efforts.

Study protocol of a breathing and relaxation intervention included in antenatal education: A randomised controlled trial (BreLax study).

Antenatal education is part of antenatal care in many countries. Physical and mental preparation for childbirth and information on pain management are considered key elements of antenatal education classes. Evidence suggests that women who participate in antenatal education classes appear to benefit in terms of self-efficacy and childbirth experience. In particular, women with increased fear of childbirth benefit from trained breathing and relaxation techniques in antenatal education. However, little is known about the effect of breathing and relaxation techniques on the outcomes of healthy pregnant women without fear of childbirth or who do not have medical or obstetric risks, or on neonatal outcomes. The aim of this study is to test whether including a breathing and relaxation technique in an antenatal education class will improve self-efficacy towards birth compared to a standard antenatal education class. The study will be a two-armed randomised controlled trial (RCT). Healthy pregnant women between the 12th and 30th week of gestation with singleton low-risk pregnancies and who are receiving routine antenatal care will be recruited in a hospital in Switzerland. All women included will attend an 8-hour antenatal education class. The intervention group will additionally practise a breathing and relaxation technique, receive a handbook to guide their exercise practice at home, and be provided with access to an online brochure with video and audio recordings for guidance. Data on maternal and neonatal outcomes will be collected after recruitment, in the 37th week of pregnancy, and two to four weeks postpartum. The effectiveness of including a breathing and relaxation technique in antenatal education classes on women's self-efficacy is discussed as a means to improving women's pregnancy and childbirth outcomes. NCT06003946, SNCTP000005672.

Using teach ECE to observe the quality of online teaching during the pandemic: an exploratory study in a pre-school in Chile

ABSTRACT During COVID-19, many schools worldwide were closed. In this unprecedented context, some students accessed distance or remote education. Assessing the quality of in-person early childhood education has a long-dated challenge and doing the same within a preschool online setting is unprecedented. This study aimed to utilize the Teach ECE observation instrument developed by the World Bank in 2021 to explore the quality of synchronous online lessons across 8 preschool classrooms in a private school in Chile. The tool is designed to observe 28 quality teaching behaviors organized into four areas. The dataset encompassed 640 min of video recordings capturing synchronous online classes over a 5-month period. Findings revealed that 7 out of the 8 preschool teachers exhibited low or medium-low quality practices across all three areas examined in this study. Average scores per area indicate that Classroom Culture obtained the highest score, followed by guided learning, and finally by socio-emotional Skills.

Unravelling the impact of the covid-19 pandemic on judo: a comparative analysis of the 2018-ec and 2020-ec championships

An athlete’s performance, though relying on the ability of the competitor, is also significantly influenced by the training time. If a sportsperson is deprived of exercising, severe consequences may arise regarding his practice as the result of such behavior. This is what occurred in the awakening of the COVID-19 pandemic where several athletes were deprived of training according to the required conditions for a high-level sport. Thus, this essay aimed to examine the various aspects of this impact. For this purpose, the effect changes in training routines on the athlete's performance/abandonment and on the combat dynamics were analyzed. Based on a quantitative analysis methodology, with descriptive and inferential analytical processes, it was considered the data obtained through the direct observation of video recordings of the combats held at the 2018 and 2020 European Championships. The results did not reveal a significant resignation of athletes from high competition but there are indications of a decrease in the number of attacks and more combat, increasing the duration of pauses and approaching the grips time (using P<0.05 as significance level). Keywords: judo; COVID-19; performance analysis; combat sport; Temporal Structure of Judo Combat.

Research on the multitarget 3D trajectory tracking method of Thalassodes immissaria in the thermal infrared region based on YOLOX-GMM and SORT-Pest.

Studying the behavioral responses and movement trajectories of insects under different stimuli is crucial for developing more effective biological control measures. Therefore, accurately obtaining the movement trajectories and behavioral parameters of insects in three-dimensional space is essential. This study used the litchi pest Thalassodes immissaria as the research object. A special binocular vision observation system was designed for nighttime movement. A thermal infrared camera was used for video recording of T. immissaria in a lightless environment. Moreover, a multi-object tracking method based on the YOLOX-GMM and SORT-Pest algorithms was proposed for tracking T. immissaria in thermal infrared images. By obtaining the central coordinates of the two T. immissaria in the video, target matching and 3D trajectory reconstruction in the parallel binocular system were achieved. Error analysis of the T. immissaria detection and tracking model, as well as the 3D reconstruction model, showed that the average accuracy of T. immissaria detection reached 89.6%, tracking accuracy was 96.9%, and the average error of the reconstructed 3D spatial coordinates was 15 mm. These results indicate that the method can accurately obtain the 3D trajectory and motion parameters of T. immissaria. Such data can greatly contribute to researchers' comprehensive understanding of insect behavioral patterns and habits, providing important support for more targeted control strategies.

Development and validation of machine-learning models for monitoring individual behaviors in group-housed broiler chickens

Animals' individual behavior is commonly monitored by live or video observation by a person. This can be labor intensive and inconsistent. An alternative is the use of machine learning-based computer vision systems. The objectives of this study were to 1) develop and optimize machine learning model frameworks for detecting, tracking and classifying individual behaviors of group-housed broiler chickens in continuous video recordings; and 2) use an independent dataset to evaluate the performance of the developed machine leaning model framework for individual poultry behaviors differentiation. Forty-two video recordings from 4 different pens (total video duration = 1,620 min) were used to develop and train multiple models for detecting and tracking individual birds and classifying 4 behaviors: feeding, drinking, active, and inactive. The optimal model framework was used to continuously analyze an external set of 11 videos (duration = 326 min), and the second-by-second behavior of each individual broiler was extracted for the comparison of human observation. After comparison of model performance, the YOLOv5l, out of 5 detection models, was selected for detecting individual broilers in a pen; the osnet_x0_25_msmt17, out of 4 tracking algorithms, was selected to track each detected bird in continuous frames; and the Gradient Boosting Classifier, out of 12 machine learning classifiers, was selected to classify the 4 behaviors. Most of the models were able to keep previously assigned individual identifications of the chickens in limited amounts of time, but lost the identities throughout an examination period (≥4 min). The final framework was able to accurately predict feeding (accuracy = 0.895) and drinking time (accuracy = 0.9) but subpar for active (accuracy = 0.545) and inactive time (accuracy = 0.505). The algorithms employed by the machine learning models were able to accurately detect feeding and drinking behavior but still need to be improved for maintaining individual identities of the chickens and identifying active and inactive behaviors.

Enhancing Students' Confidence in Oral Presentations with a Video Recording Assignment

Enhancing Students' Confidence in Oral Presentations with a Video Recording Assignment

SimCapture app video performance assessment versus real-time instructor-based performance evaluation of undergraduates in neonatal resuscitation-an agreement study.

Undergraduates are trained in the basic neonatal resuscitation programme (NRP) and evaluated for skill acquisition by NRP performance evaluation test (PET). Video use improves the validity of assessment when video-information adequacy, intrusiveness to students, and educational purpose are adequately balanced. We evaluated whether there was a difference between instructor's real-time assessment and video-based assessment done by another independent assessor using videos recorded via the SimCapture application. Undergraduates were trained in basic neonatal resuscitation and were evaluated at the end for skill acquisition by PET as a part of a randomized control trial (RCT). Video recording of the PET assessment was done with the SimCapture app. Independent assessors evaluated recorded videos to evaluate and validate real-time instructor performance evaluation time assessments. We conducted an agreement study to evaluate the difference between a real-time instructor and video assessments. We trained 143 students; 139 videos were evaluated. The Bland-Altman plot showed good agreement. For the post-test result, 66 (47.5%) passed, and 73 (52.5%) failed according to the real-time assessment, while 61 (43.8%) passed and 78 (56.1%) failed according to the video assessment. The agreement between the two assessments was 94.9%, with a kappa value of 0.898. Indicating the need for positive pressure ventilation (PPV), 138 (99.3%) did correctly in real-time assessment, while 133 (95.6%) did correctly in video assessment with agreement of 96.4% but low kappa of 0.27. We conclude that the instructors' assessment was excellent and didn't differ from assessments obtained from recorded videos and vice-versa.

Концепция использования современных технических средств при проведении обследования помещений, ограничивающего конституционное право человека и гражданина на неприкосновенность жилища

The article provides a systematic analysis of current legislation, generally accepted judicial practice and various doctrinal approaches to the legal regulation of public inspection of premises, which restricts the constitutional right of a person and citizen to inviolability of the home, and suggests ways to improve current legislation aimed at eliminating gaps in the legal regulation of the procedure for conducting this operational search event. As a result of the study, special powers of employees of operational units were noted when drawing up a protocol for the inspection of a home and using video and audio recordings, film and photography, as well as other technical and other means during this operational search event. The paper describes the legal regime and classification of unmanned aerial vehicles depending on the maximum take-off weight and type of ownership. Taking into account modern scientific and technical achievements, it is proposed to use a quadcopter using the following innovative methods when conducting a housing survey: video shooting, panoramic, nodal and detailed photography, “online broadcast”, three-dimensional modeling, modeling using artificial intelligence, digital protocol compilation and methods: photo and (or) video shooting using infrared and ultraviolet detectors, video shooting using gas analysis detectors, X-ray photography. The use of modern technical means in conducting a home survey will ensure objectivity, increase efficiency and guarantee high efficiency of this operational investigative measures.

Exploring perception and immersive experience of visually impaired people in 360° video and 3D ambisonic audio

For a long time, immersive experiences have been designed with primarily sighted users in mind. However, recent advancements open exciting possibilities for expanding this realm to include individuals with visual impairments such as Cataracts, Glaucoma, and Severe low visual. One promising avenue lies in utilizing 360-degree videos with 3D Ambisonic audio recordings to create immersive experiences specifically tailored to their unique perceptual abilities. In this context, this preliminary study investigates audio-visual perception and presence of visually impaired people (VIP) in immersive reality (IR) environments, by applying 360-degree video and 3D Ambisonic audio recordings in three different environments of a public park "Parking area, Green space, and Playground". The methodological approach of this study is based on a comparative study between sighted (SIG) and visually impaired people (VIP), by conducting questionnaires such as the presence questionnaire and the emotional salience questionnaire. The findings show that both categories can experience the same presence within the IR environment with a difference in the evaluation of the acoustic environment, where the visually impaired show a greater influence on mechanical sounds. By designing inclusive experiences for all, IR has the potential to be equally engaging and immersive for everyone, regardless of sight.

Dance displays in gibbons: biological and linguistic perspectives on structured, intentional, and rhythmic body movement.

Female crested gibbons (genus Nomascus)perform conspicuous sequences of twitching movements involving the rump and extremities. However, these dances have attracted little scientific attention and their structure and meaning remain largely obscure. Here we analyse close-range video recordings of captive crested gibbons, extracting descriptions of dance in four species (N. annamensis, N. gabriellae, N. leucogenys and N. siki). In addition, we report results from a survey amongst relevant professionals clarifying behavioural contexts of dance in captive and wild crested gibbons. Our results demonstrate that dances in Nomascus represent a common and intentional form of visual communication restricted to sexually mature females. Whilst primarily used as a proceptive signal to solicit copulation, dances occur in a wide range of contexts related to arousal and/or frustration in captivity. A linguistically informed view of this sequential behaviour demonstrates that movement withindances is organizedin groups andfollows an isochronous rhythm-patterns not described for visual displays in other non-human primates. We argue that applying the concept of dance to gibbons allows us to expand our understanding of communication in non-human primates and todevelop hypotheses on the rules and regularities characterising it. We propose that crestedgibbon dances likely evolved from less elaborate rhythmic proceptive signals, similar to those found in siamangs. Although dance displays in humans and crested gibbons share a number of key characteristics, they cannot be assumed to be homologous. Nevertheless, gibbon dances represent a strikingmodel behaviour to investigate the use of complex gestural signals in hominoid primates.

Construction site environmental pollution management - initiatives, innovation and research

The management of pollution, and in particular of the impact of noise and vibrations, is very important for construction activities, even more so when it comes to urban construction sites. Indeed, some operations have very significant emissive potential and it is appropriate, for the proper conduct of the activities, to adopt a certain strategy in order to control the impacts and thus ensure good acceptance of the construction by the neighborhood. Environmental monitoring is the key to achieving this dual objective: prevent pollution and communicate. This paper presents our innovative approach to localize, identify and report noise pollution on construction sites for efficient noise mitigation. More precisely, usage of acoustic high resolution beamforming is discussed to both identify predominant sources and estimate reliably their contribution to overall noise pollution captured at a given reference point by à Class I metrological device. By combining the easy-to-deploy ATD directional acoustic sensor with its 10cm aperture microphone array, with video recording for event confirmation and labelling on the highly responsive Cadence interface, we show how we can solve complex use cases for a wide range of users, from site managers to acoustic experts.

Improving knowledge of the acoustic factors involved in railway noise annoyance: first results of a pilot field survey of sixty-two local residents

Railway transportation contributes to the objectives of decarbonization but also generates negative externalities, including noise. Energy noise indicators used to characterize population exposure do not adequately reflect the repetitive nature of railway noise peaks. The GENIFER pilot study aims to test a protocol designed to characterize railway noise events according to the instantaneous perceived annoyance when the train is passing, in order to improve understanding of the influence of acoustic factors on annoyance. The first phase of the survey was carried out in 2023 among 62 residents of a pilot site. An electronic device was used to collect around 5,000 ratings, ranging from 1 to 10, assessing the instantaneous annoyance induced by train noise at passing trains. The site instrumentation included sixteen sound level meters and two video recording systems, enabling annoyance ratings to be associated with the acoustic characteristics of railway noise events. A questionnaire aimed at identifying co-determinants of long-term annoyance was also administered to participants. Feedback on the field implementation of this survey and initial results concerning acoustic measurements, instantaneous annoyance ratings and questionnaire responses will be presented.

Fine-grained Fidgety Movement Classification using Active Learning.

Typically developing infants, between the corrected age of 9-20 weeks, produce fidgety movements. These movements can be identified with the General Movement Assessment, but their identification requires trained professionals to conduct the assessment from video recordings. Since trained professionals are expensive and their demand may be higher than their availability, computer vision-based solutions have been developed to assist practitioners. However, most solutions to date treat the problem as a direct mapping from video to infant status, without modeling fidgety movements throughout the video. To address that, we propose to directly model infants' short movements and classify them as fidgety or non-fidgety. In this way, we model the explanatory factor behind the infant's status and improve model interpretability. The issue with our proposal is that labels for an infant's short movements are not available, which precludes us to train such a model. We overcome this issue with active learning. Active learning is a framework that minimizes the amount of labeled data required to train a model, by only labeling examples that are considered "informative" to the model. The assumption is that a model trained on informative examples reaches a higher performance level than a model trained with randomly selected examples. We validate our framework by modeling the movements of infants' hips on two representative cohorts: typically developing and at-risk infants. Our results show that active learning is suitable to our problem and that it works adequately even when the models are trained with labels provided by a novice annotator.

REVEALS: an open-source multi-camera GUI for rodent behavior acquisition.

Deciphering the rich repertoire of mouse behavior is crucial for understanding the functions of both the healthy and diseased brain. However, the current landscape lacks effective, affordable, and accessible methods for acquiring such data, especially when employing multiple cameras simultaneously. We have developed REVEALS (Rodent Behavior Multi-Camera Laboratory Acquisition), a graphical user interface for acquiring rodent behavioral data via commonly used USB3 cameras. REVEALS allows for user-friendly control of recording from one or multiple cameras simultaneously while streamlining the data acquisition process, enabling researchers to collect and analyze large datasets efficiently. We release this software package as a stand-alone, open-source framework for researchers to use and modify according to their needs. We describe the details of the graphical user interface implementation, including the camera control software and the video recording functionality. We validate results demonstrating the graphical user interface's stability, reliability, and accuracy for capturing rodent behavior using DeepLabCut in various behavioral tasks. REVEALS can be incorporated into existing DeepLabCut, MoSeq, or other custom pipelines to analyze complex behavior. In summary, REVEALS offers an interface for collecting behavioral data from single or multiple perspectives, which, when combined with deep learning algorithms, enables the scientific community to identify and characterize complex behavioral phenotypes.

Implementing a new multidisciplinary, remote, dementia staff training program for Veterans affairs nursing homes

BackgroundPreventing Loss of Independence through Exercise (PLIÉ) is a group program for people living with dementia that combines movements to support daily function with present moment body awareness and social engagement that has been found to have physical, emotional, social, and cognitive benefits. The goal of this study was to develop and refine a PLIÉ remote training program for interdisciplinary Veterans Affairs (VA) nursing home staff members also known as community living center (CLC) staff.MethodsThis pre-implementation study used iterative Plan-Do-Study-Act (PDSA) cycles. The 10-week PDSA cycles occurred from June to September 2021 at 2 VA nursing home sites. Remote training was delivered via Microsoft Teams and included 1-hour live-streamed weekly didactic sessions (nursing staff with PLIÉ instructor) focused on PLIÉ principles and 1-hour weekly live-streamed experiential sessions for staff to apply PLIÉ principles with residents. We administered weekly feedback surveys to iteratively refine the training process.Results14 staff members participated (5 recreation therapists, 3 social workers, 2 registered nurses, 2 chaplains, 1 psychologist, and 1 speech pathologist). The experiential sessions were rated as most helpful overall. Key PDSA refinements included: (1) creating 10-minute video recording summaries to support learning, particularly for those unable to attend live training sessions due to clinical schedules; and (2) incorporating self-reflection and goal setting to support staff incorporation of PLIÉ principles into routine care and personal life. These refinements resulted in increased use of PLIÉ principles with the residents from 67 to 89% of the staff participants. 100% of regular attendees (11/11) rated their overall satisfaction with remote training as “very good” or “excellent.”ConclusionsIt was feasible to train interdisciplinary CLC staff participants to deliver an integrative group movement program for residents with dementia remotely. PDSA cycles supported refinement of the training process and improved uptake. A larger study of PLIÉ remote CLC staff training is needed to assess outcomes on residents and quality of care.

Comparison of remote and in-person respiratory function grading of brachycephalic dogs.

To compare the reliability of respiratory function grading (RFG) scores assigned in-person and remotely via video and electronic stethoscope recordings, evaluated by novice and expert graders. Prospective study. Fifty-seven brachycephalic dogs. Dogs were evaluated in person by expert graders and RFG scores were assigned. Audio and video recordings were made during the in-person evaluations. Four expert and four novice graders evaluated the recordings and assigned an RFG score to each dog. Agreement between in-person and remote RFG scores was assessed using Cohen's kappa statistic. Interobserver reliability was assessed using Fleiss' kappa statistic. The median RFG score from the in-person assessment was 1 (range, 0-3). Distribution of RFG scores included 12 grade 0 scores, 19 grade 1 scores, 25 grade 2 scores, and 1 grade 3 score. The raw percentage agreements between remote and in-person scores were 68.4%, 59.6%, 64.9%, and 61.4% for the four experts, and 52.6%, 64.9%, 50.9%, and 42.1% for the four novices. Reliability between remote and in-person RFG scores was poor to moderate both for the experts (Cohen's kappa: .48, .37, .46, .41) and novices (Cohen's kappa: .28, .47, .28, .21). Interobserver reliability was moderate among the experts (Fleiss' kappa: .59) and poor among the novices (Fleiss' kappa: .39). Remote RFG scores had poor to moderate interassessment and interobserver reliability. Novice evaluators performed worse than experts for remote or in-person RFG evaluations. Remote RFG, as measured in this study, is not reliable for assigning RFG scores. Modifications could be made to remote evaluation to improve reliability. Based upon the performance of novice evaluators, training of evaluators is justified.

Lateral flow assay sensitivity and signal enhancement via laser µ-machined constrains in nitrocellulose membrane

Lateral flow assay (LFA) is a handful diagnostic technology that can identify severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and other common respiratory viruses in one strip, which can be tested at the point-of-care without the need for equipment or skilled personnel outside the laboratory. Although its simplicity and practicality make it an appealing solution, it remains a grand challenge to substantially enhance the colorimetric LFA sensitivity. In this work, we present a straightforward approach to enhance the sensitivity of LFA by imposing the flow constraints in nitrocellulose (NC) membranes via a number of vertical femtosecond laser micromachined microchannels which is important for prolonged specific binding interactions. Porous NC membrane surfaces were structured with different widths and densities µ-channels employing a second harmonic of the Yb:KGW femtosecond laser and sample XYZ translation over a microscope objective-focused laser beam. The influence of the microchannel parameters on the vertical wicking speed was evaluated from the video recordings. The obtained results indicated that µ-channel length, width, and density in NC membranes controllably increased the immunological reaction time between the analyte and the labeled antibody by 950%. Image analysis of the colorimetric indicators confirmed that the flow rate delaying strategy enhanced the signal sensitives by 40% compared with pristine NC LFA.

The Impact of Digital Storytelling on the Promotion of National Identity among Preschool Children

With the advent of digital storytelling, educators now have powerful resources to inspire national identity in the next generation and open new avenues for creative learning in preschool. This paper reports on a case study that explores the impact of digital storytelling (DST) on the promotion of national identity. This study used a qualitative approach to investigate the observed phenomenon. The context of this case study involves the utilization of DST within a modern, technologically equipped kindergarten that has adopted the new Saudi curriculum. Six preschoolers were included in this case study, and a range of qualitative data were collected through observations (notes, photographs, video recordings), nonparticipant and interaction observations, and children’s artifacts. Thematic analysis revealed that DST is a valuable tool for promoting national identity among preschool children. By incorporating DST into early childhood education, educators can effectively engage young learners in exploring their cultural heritage, thus promoting a sense of pride, belonging, and connection to their national identity.

A visual ethnography of parent-child interactions during ‘story-time’ in Chinese family settings

ABSTRACT Story-time serves as an interactive linguistic tool through which parents encourage their children to share narratives. Grounded in sociocultural and narrative theories, this study employed a visual ethnographic approach to explore how parents perceive and engage in story-time interactions within 33 Chinese families. Data were collected through video recordings of story-time sessions and semi-structured interviews. The findings suggest that story-time may function as a play-based educational tool, fostering positive parent–child relationships and supporting child development through activities such as child-centered reading and role-playing. Parent–child interactions were categorized into two primary types: those involving print-based materials and those centered around oral storytelling. Parents emphasized the importance of respecting their children’s preferences by allowing them to choose stories and by developing effective storytelling techniques to maximize the benefits of family story-time. Through these sessions, parents and children engaged in meaningful interactions that strengthened family bonds and contributed to the children’s holistic development.