scholarly journals STUDY ON BODY MOVEMENTS DURING COOKING : Basic research of body movement using video analysis

2000 ◽  
Vol 65 (527) ◽  
pp. 107-112 ◽  
Author(s):  
Yasushi TANAKA ◽  
Takeshi YATOGO ◽  
Kan NOMURA
Keyword(s):  
Video Analysis ◽  
Body Movement ◽  
Basic Research ◽  
Body Movements

PVAT - a Posture Video Analysis Tool

1993 ◽  
Vol 37 (15) ◽  
pp. 1045-1045
Author(s):  
Darlene Merced-Moore ◽  
Susan C. Adam
Keyword(s):  
Video Analysis ◽  
Human Performance ◽  
Body Movement ◽  
Body Part ◽  
Space Environment ◽  
Microgravity Environment ◽  
Analysis Tool ◽  
Video Footage ◽  
Input Parameters ◽  
Data Collection Technique

The Posture Video Analysis Tool (PVAT) has been developed to meet the special needs of ergonomist and human factors analyst at NASA Johnson Space Center. Often times these specialist must attempt to evaluate microgravity working posture from video footage not specifically recorded for the purposes of quantitative analysis. The purpose for developing PVAT was to provide a structured methodology in which these specialists could optimize the data collection technique. The PVAT is designed such that microgravity postures can be documented while systematically observing footage of astronauts working in a space environment. PVAT is an interactive Macintosh menu and button driven SupercardTM prototype. Users are provided with a set of input parameters related to the microgravity environment and human performance issues. The primary inputs are: subject code, body orientation, targeted body part, camera view (given subject location), body movement, and rating level. A secondary set of inputs is available for users wishing to document extraneous behaviors or activities such as bending, reaching, interruptions, etc. These secondary behaviors may be documented as part of the primary inputs or independently. Each entry is time stamped and stored automatically. Provisions are made that allow users to pause, tag incorrect selections, enter an “unsure” response and user comments. Data output is saved as a “text file” using tab delimiters for easy importation into programs such as Micrsoft EXCELTM. Future PVAT modifications will include adding more input parameters, data reduction capabilities, control of the video deck from the application, and an animated postural glossary.

PVAT - a Video Analysis Tool for Microgravity Posture Evaluation

1993 ◽  
Vol 37 (10) ◽  
pp. 749-753
Author(s):  
Mihriban Whitmore ◽  
Darlene Merced-Moore ◽  
Susan C. Adam
Keyword(s):  
Video Analysis ◽  
Body Movement ◽  
Body Part ◽  
Space Environment ◽  
Analysis Tool ◽  
Interactive Software ◽  
Space Applications ◽  
Video Footage ◽  
Input Parameters ◽  
Data Collection Technique

PVAT (Posture Video Analysis Tool) has been developed to meet the special needs of ergonomist and human factors analyst attempting to evaluate microgravity working posture from video footage. These specialists often have very little or no control over the video coverage. Moreover, the majority of Shuttle mission videos are not recorded for quantitative analysis. The purpose for developing PVAT is to provide a structured methodology in which these specialists could optimize the data collection technique. PVAT is specifically designed to document microgravity postures using videos of astronauts working in a space environment. The primary focus of PVAT is identifying the microgravity working postures and relating them to design issues in the workplace. This tool is currently an interactive software prototype written in SupercardTM. Users are provided with a set of input parameters such as: subject code, body orientation, targeted body part, camera view (given subject location), body movement, and rating level. A secondary set of inputs are also available which provides the ability to document extraneous behaviors or activities such as bending, reaching and interruptions. The tool allows for the input parameters to be customized as needed. Once the setup is defined, the user begins documenting the target posture and/or behaviors. The paper will discuss PVAT, its space applications and plans for its use.

Time Series Analysis of Ultrasonic Observations of Gross Fetal Body Movements during the Last 10 Weeks of Pregnancy

1981 ◽  
Vol 3 (4) ◽  
pp. 330-341 ◽  
Author(s):  
Karen Campbell ◽  
Ian MacNeill ◽  
John Patrick
Keyword(s):  
Time Series ◽  
Spectral Analysis ◽  
Time Series Analysis ◽  
Regression Model ◽  
Body Movement ◽  
Frequency Range ◽  
Body Movements ◽  
Significant Power ◽  
First Order ◽  
Auto Regression

Thirty fetuses were observed for 24 hours and one fetus was observed for 20 hours during the last 10 weeks of gestation. Observations were made of the amount of gross fetal body movement in each successive 5 minute observation epoch, thus resulting in 30 time series of 288 observations and one time series of 240 observations. Spectral analysis of these time series demonstrated the presence of significant power in the frequency range of 0.002 to 0.0175 cpm. Application of Box-Jenkins techniques to the time series resulted in the choice of a first-order auto-regression model to fit the data. It was concluded that the incidence of episodes of gross fetal body movements were non-random and were, in fact, pseudoperiodic.

Automatic Generation of Expressive Body Movement Based on Cohen-kestenberg Lifelike Motion Stereotypes

2003 ◽  
Vol 7 (2) ◽  
pp. 124-129 ◽  
Author(s):  
Toru Nakata ◽  
Keyword(s):  
Body Movement ◽  
Automatic Generation ◽  
Emotional States ◽  
Psychological Experiment ◽  
Body Movements ◽  
Developmental States ◽  
Expressive Body Movement

Method of automatic choreography to generate lifelike body movements is proposed. This method is based on somatic theories that are conventionally used to evaluate human’s psychological and developmental states by analyzing body movement. This paper proposes the use of these theories in the inverse way to facilitate the generation of artificial body movements that are plausible in relation to the regarding evolutionary, developmental and emotional states of robots or other automata. This paper reviews somatic theories and describes a strategy for implementating automatic body movement generation. An additional psychological experiment is also conducted to evaluate expression ability of body movement rhythms.

scholarly journals Effect of body movements in the venous blood flow and lymphatic circulation

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Eduardo Pinto-Ferreira
Keyword(s):  
Venous Thromboembolism ◽  
Body Movement ◽  
Venous Blood ◽  
The Body ◽  
Body Motion ◽  
Venous Stasis ◽  
Venous Blood Flow ◽  
Body Movements ◽  
Predisposing Factor ◽  
Lymphatic Circulation

The studies of ballistocardiography about the effect of cardiovascular activity in body motion raised the author interest in the research of the influence of body movements in the circulatory flow in venous and lymphatic vessels. These effects follow Sir Isaac Newton laws. With the body movement, the one-way valve structure of these vessels will cause a mobilization of venous blood and lymph to the proximal side. A model was built to demonstrate the effect of oscillatory movement in a liquid flow in a system of one-way valve. There was a rise of the liquid with difference in level that ranged from 9 cm up to 34 cm, depending on the amplitude and frequency. The model tried to mimic a segment of vein with its valve, and evaluate the effectiveness of oscillatory movements in the progression of the liquid, In a preliminary study, to assess the effect of oscillatory movements on leg swelling, this movements was applied in a clinical cases. There was regression of the oedema and circumference on the leg, by oscillatory movements, that was correlated with increase in lymphatic and venous drainage. Venous stasis is a predisposing factor of venous thromboembolism. How we extrapolate from the experimental model, the oscillatory movements of the legs improving venous circulation may contribute to the prophylaxis of venous thromboembolism. In conclusion, it is of interest to study its application in some situations of venous thromboembolism risk.

scholarly journals Weapons, Body Postures, and the Quest for Dominance in Robberies

2018 ◽  
Vol 55 (1) ◽  
pp. 3-26 ◽  
Author(s):  
Floris Mosselman ◽  
Don Weenink ◽  
Marie Rosenkrantz Lindegaard
Keyword(s):  
Violent Crime ◽  
Video Analysis ◽  
The Body ◽  
Small Scale ◽  
Body Movements ◽  
Body Postures ◽  
Fine Grained ◽  
Video Footage ◽  
New Perspective ◽  
Qualitative Analyses

Objective: A small-scale exploration of the use of video analysis to study robberies. We analyze the use of weapons as part of the body posturing of robbers as they attempt to attain dominance. Methods: Qualitative analyses of video footage of 23 shop robberies. We used Observer XT software (version 12) for fine-grained multimodal coding, capturing diverse bodily behavior by various actors simultaneously. We also constructed story lines to understand the robberies as hermeneutic whole cases. Results: Robbers attain dominance by using weapons that afford aggrandizing posturing and forward movements. Guns rather than knives seemed to fit more easily with such posturing. Also, victims were more likely to show minimizing postures when confronted with guns. Thus, guns, as part of aggrandizing posturing, offer more support to robbers’ claims to dominance in addition to their more lethal power. In the cases where resistance occurred, robbers either expressed insecure body movements or minimizing postures and related weapon usage or they failed to impose a robbery frame as the victims did not seem to comprehend the situation initially. Conclusions: Video analysis opens up a new perspective of how violent crime unfolds as sequences of bodily movements. We provide methodological recommendations and suggest a larger scale comparative project.

Effects of Mirror and Metronome Use on Spontaneous Dance Movements

Motor Control ◽  
2021 ◽  
Vol 25 (1) ◽  
pp. 75-88
Author(s):  
Derrick D. Brown ◽  
Jurjen Bosga ◽  
Ruud G.J. Meulenbroek
Keyword(s):  
Time Series ◽  
Body Movement ◽  
Motor Task ◽  
Movement Patterns ◽  
Sample Entropy ◽  
Upper Body ◽  
Body Movements ◽  
Frequency Distributions ◽  
Acceleration Time ◽  
Dance Movements

This study investigated effects of mirror and metronome use on spontaneous upper body movements by 10 preprofessional dancers in a motor task in which maximally diverse upper body movement patterns were targeted. Hand and trunk accelerations were digitally recorded utilizing accelerometers and analyzed using polar frequency distributions of the realized acceleration directions and sample entropy of the acceleration time. Acceleration directions were more variably used by the arms than by the torso, particularly so when participants monitored their performance via a mirror. Metronome use hardly affected the predictability of the acceleration time series. The findings underscore the intrinsic limitations that people experience when being asked to move randomly and reveal moderate effects of visual and acoustic constraints on doing so in dance.

scholarly journals Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 555 ◽  
Author(s):  
Sang Hyun Ji ◽  
Yong-Soo Cho ◽  
Ji Sun Yun
Keyword(s):  
Polyvinylidene Fluoride ◽  
Output Voltage ◽  
Energy Harvester ◽  
Body Movement ◽  
Effective Area ◽  
Core Shell ◽  
Body Movements ◽  
Bending Tests ◽  
The Core ◽  
Piezoelectric Energy

In an effort to fabricate a wearable piezoelectric energy harvester based on core-shell piezoelectric yarns with external electrodes, flexible piezoelectric nanofibers of BNT-ST (0.78Bi0.5Na0.5TiO3-0.22SrTiO3) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) were initially electrospun. Subsequently, core-shell piezoelectric nanofiber yarns were prepared by twining the yarns around a conductive thread. To create the outer electrode layers, the core-shell piezoelectric nanofiber yarns were braided with conductive thread. Core-shell piezoelectric nanofiber yarns with external electrodes were then directly stitched onto the fabric. In bending tests, the output voltages were investigated according to the total length, effective area, and stitching interval of the piezoelectric yarns. Stitching patterns of the piezoelectric yarns on the fabric were optimized based on these results. The output voltages of the stitched piezoelectric yarns on the fabric were improved with an increase in the pressure, and the output voltage characteristics were investigated according to various body movements of bending and pressing conditions.

Heart Rate and Physical Activity of Children During Dental Treatment

1976 ◽  
Vol 55 (4) ◽  
pp. 648-651 ◽  
Author(s):  
Howard M. Rosenberg ◽  
Aaron Honori Katcher
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Dental Treatment ◽  
Body Movement ◽  
Body Movements

Body movements and heart rate were measured during dental treatment in 58 children 3 to 12 years of age. The heart rate increased in 85% of the 34 children who moved during intraoral injection. The heart rate decreased in 71% of the children with no overt body movement during intraoral injection.

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