scholarly journals 3D Motion-based Ergonomic and Body Posture Analysis in Construction

2016 ◽  
Author(s):  
Xinming Li ◽  
SangHyeok Han ◽  
Mustafa Gul ◽  
Mohamed Al-Hussein
Keyword(s):  
Risk Assessment ◽  
Human Body ◽  
Manufacturing Industry ◽  
Body Movement ◽  
Risk Identification ◽  
Body Posture ◽  
Body Motion ◽  
Body Movements ◽  
Posture Analysis ◽  
Ergonomic Risk

The construction manufacturing industry in North America has a disproportionately high number of lost-time injuries due to the higher physical demand of labour-intensive tasks. It is thus essential to investigate the physical demands of body movement in the workplace in order to identify worker exposure to ergonomic risk. This paper presents a methodology for converting video-captured body movements in an actual manufacturing plant into 3D virtual animations for ergonomic risk analysis. Through 3D virtual animation, dynamic human body data can be obtained (such as joint angles) for body posture risk assessment analysis using existing risk assessment algorithms. The presented framework enables body motion risk identification by detecting awkward body postures, evaluating handled force/load and frequency that cause ergonomic risk during body movements of workers. The capability of the 3D modelling can be extended to support the re-design of the workplace and optimization of human body movement accordingly in order to mitigate ergonomic risk. The methodology is implemented in a case study in order to analyze operational tasks in manufacturing plants. Modified work recommendations are expected as a result of this systematic 3D ergonomic analysis which will further reduce potential injuries and workersäó» compensation insurance costs in the long term.

Electric Wheelchair Controlled by Human Body Motion -Classification of Body Motion and Improvement of Control Method-

2010 ◽  
Vol 22 (4) ◽  
pp. 439-446 ◽  
Author(s):  
Sho Yokota ◽  
◽  
Hiroshi Hashimoto ◽  
Yasuhiro Ohyama ◽  
Jinhua She ◽  
...  
Keyword(s):  
Pressure Distribution ◽  
Human Body ◽  
Control Method ◽  
Body Movement ◽  
Single Point ◽  
Movement Pattern ◽  
Body Motion ◽  
Self Organizing Map ◽  
Electric Wheelchair ◽  
Wheelchair Control

This paper classifies human body movements when an electric wheelchair was controlled using a Human Body Motion Interface (HBMI) by a Self-Organizing Map (SOM) and proposes control based on classification results. The Human Body Motion Interface (HBMI) uses body movement following voluntary motion. This study focuses on electric wheelchair control as an application of the HBMI. The viability of the HBMI was confirmed using Center Of Weight (C.O.W.) from pressure distribution information on backrest in the wheelchair to control it. If body movement concentrated on a single point at C.O.W. in pressure distribution, a problem occurred because the system would recognize even different body-movement patterns as the same movement. We call body movement taking the same C.O.W. even if it has a different body-movement pattern movement confusion. We solve the movement confusion problem and enhance wheelchair control, classifying body movement using the SOM and reflecting this classification result to improve wheelchair control. Experimental results showed that movement confusion is solved and wheelchair control improved.

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 Supply chain risk management processes for resilience: A study of South African grocery manufacturers

2017 ◽  
Vol 11 ◽  
Author(s):  
Simon Simba ◽  
Wesley Niemann ◽  
Theuns Kotzé ◽  
Assilah Agigi
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Supply Chain ◽  
South African ◽  
Manufacturing Industry ◽  
Risk Identification ◽  
Supply Chain Risk Management ◽  
Supply Chain Risk ◽  
Supply Chain Resilience ◽  
Increased Risk

Background: The supply chain risk management (SCRM) process is aimed at the implementation of strategies that assist in managing both daily and exceptional risks facing the supply chain through continuous risk assessment to reduce vulnerability and ensure continuity.Purpose: The purpose of the study was to determine whether the SCRM process enables supply chain resilience among grocery manufacturers in South Africa. The fast-moving consumer goods (FMCG)-manufacturing industry faces increased risk because of the nature of their products being perishable with a limited shelf life.Method: This study was conducted using a descriptive qualitative research design. Data were collected by means of 12 semi-structured interviews with senior supply chain practitioners within the South African grocery manufacturing industry.Findings: The study found that most firms informally implement SCRM processes of risk identification, assessment, mitigation and monitoring to mitigate disruptions. Furthermore, the findings indicate that the SCRM processes facilitate resilience among grocery manufacturers in South Africa.Conclusion: The managerial implications show that supply chain managers of grocery manufacturers should formalise the SCRM process and develop risk assessment scales to better prioritise risks in order to run a resilient supply chain. The research contributes to the supply chain management field by adding to the scarce literature relating to SCRM as an enabler of supply chain resilience in a South African context.

The Application of Computer Numerical Simulation in the Sports Science Study

2014 ◽  
Vol 989-994 ◽  
pp. 4367-4370
Author(s):  
Shang Guan Yi Qin
Keyword(s):  
Numerical Simulation ◽  
Human Body ◽  
Digital Simulation ◽  
Skill Training ◽  
Body Movement ◽  
Body Motion ◽  
Science Study ◽  
Sports Science ◽  
Computer Numerical Simulation ◽  
Plan Modification

In this paper, the author uses the literature review methods to talk about the application of the computer numerical simulation technology, combining the research methods and features of the sports science. In the sports science study, the author expounds the application methods, procedure, steps and functions of computer numerical simulation in terms of the establishment of the digital simulation model of the human body motion, the procedures, data input, data pre-treatment and calculation of computer numerical simulation, the technical plan modification of the human body movement, the new movement design as well as the application value of computer numerical simulation in the skill training.

scholarly journals The role of computational and subjective features in emotional body expressions

2020 ◽  
Author(s):  
Marta Poyo Solanas ◽  
Maarten Vaessen ◽  
Beatrice de Gelder
Keyword(s):  
Body Movement ◽  
Body Posture ◽  
Whole Body ◽  
Body Movements ◽  
Movement Perception ◽  
Related Information ◽  
Feature Descriptors ◽  
Underlying Mechanisms ◽  
Whole Body Movement

Humans are experts at recognizing intent and emotion from other people’s body movements; however, the underlying mechanisms are poorly understood. Here, we computed quantitative features of body posture and kinematics and acquired behavioural ratings of these feature descriptors to investigate their role in affective whole-body movement perception. Representational similarity analyses and classification regression trees were used to investigate the relation of emotional categories to both the computed features and behavioural ratings. Overall, postural rather than kinematic features discriminated better between emotional movements for the computed as well as for the behavioural features. In particular, limb angles and symmetry appeared to be the most relevant ones. This was observed independently of whether or not the time-related information was preserved in the computed features. Interestingly, the behavioural ratings showed a clearer distinction between affective movements than the computed counterparts. Finally, the perceived directionality of the movement (i.e. towards or away from the observer) was found to be critical for the recognition of fear and anger.

scholarly journals 8B46 4D human body posture estimation based on whole-body motion capture data

2012 ◽  
Vol 2012.24 (0) ◽  
pp. 8B46
Author(s):  
Naoya YOSHIKAWA ◽  
Yasuyuki SUZUKI ◽  
Wataru OZAKI ◽  
Tomohisa YAMAMOTO ◽  
Taishin NOMURA
Keyword(s):  
Motion Capture ◽  
Human Body ◽  
Body Posture ◽  
Body Motion ◽  
Whole Body ◽  
Motion Capture Data ◽  
Posture Estimation

scholarly journals Some Video Abstraction Techniques for Displaying Body Movement in Analysis and Performance

Leonardo ◽  
2013 ◽  
Vol 46 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Alexander Refsum Jensenius
Keyword(s):  
Medical Research ◽  
Human Body ◽  
Body Movement ◽  
Body Movements ◽  
Video Recordings ◽  
Music Research ◽  
And Performance ◽  
Visualization Techniques ◽  
Motion History Images ◽  
Video Visualization

This paper presents an overview of techniques for creating visual displays of human body movement based on video recordings. First a review of early movement and video visualization techniques is given. Then follows an overview of techniques that the author has developed and used in the study of music-related body movements: motion history images, motion average images, motion history keyframe images and motiongrams. Finally, examples are given of how such visualization techniques have been used in empirical music research, in medical research and for creative applications.

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