Observational Methods for Analyzing Working Postures in Agriculture

1997 ◽  
Vol 3 (3) ◽  
Author(s):  
S. Pinzke
Keyword(s):  
Observational Methods ◽  
Working Postures

scholarly journals Investigation of observational methods assessing workload of static working postures based on surface electromyography

Work ◽  
2019 ◽  
Vol 62 (2) ◽  
pp. 185-195 ◽  
Author(s):  
Tobias Hellig ◽  
Vera Rick ◽  
Alexander Mertens ◽  
Verena Nitsch ◽  
Christopher Brandl
Keyword(s):  
Surface Electromyography ◽  
Observational Methods ◽  
Working Postures

scholarly journals A deep learning-based RULA method for working posture assessment

2019 ◽  
Vol 63 (1) ◽  
pp. 1090-1094
Author(s):  
Li Li ◽  
Xu Xu
Keyword(s):  
Deep Learning ◽  
Deep Neural Network ◽  
Causal Relation ◽  
Percentage Error ◽  
Average Error ◽  
Observational Methods ◽  
Industrial Practice ◽  
Working Posture ◽  
Working Postures ◽  
Posture Assessment

Musculoskeletal disorders (MSDs) represent one of the leading cause of injuries from modern industries. Previous research has identified a causal relation between MSDs and awkward working postures. Therefore, a robust tool for estimating and monitoring workers’ working posture is crucial to MSDs prevention. The Rapid Upper Limb Assessment (RULA) is one of the most adopted observational methods for assessing working posture and the associated MSDs risks in industrial practice. The manual application of RULA, however, can be time consuming. This research proposed a deep learning-based method for real-time estimating RULA from 2-D articulated pose using deep neural network. The method was trained and evaluated by 3-D pose data from Human 3.6, an open 3-D pose dataset, and achieved overall Marginal Average Error (MAE) of 0.15 in terms of RULA grand score (or 3.33% in terms of percentage error). All the data and code can be found at the first author’s GitHub ( https://github.com/LLDavid/RULA_machine ).

Monitoring provider fidelity of a parenting intervention using observational methods.

2019 ◽  
Vol 50 (4) ◽  
pp. 264-271 ◽  
Author(s):  
Amanda H. Costello ◽  
Caroline K. P. Roben ◽  
Stevie S. Schein ◽  
Fabianne Blake ◽  
Mary Dozier
Keyword(s):  
Parenting Intervention ◽  
Observational Methods

scholarly journals Influence of design of dentist’s chairs on body posture for dentists with different working experience

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
F. Huppert ◽  
W. Betz ◽  
C. Maurer-Grubinger ◽  
F. Holzgreve ◽  
L. Fraeulin ◽  
...  
Keyword(s):  
Work Experience ◽  
Dental Treatment ◽  
Subjective Assessment ◽  
Body Posture ◽  
Control Group ◽  
Sitting Position ◽  
Ergonomic Design ◽  
Sitting Posture ◽  
Working Posture ◽  
Working Postures

Abstract Background Musculoskeletal disorders (MSD) are a common health problem among dentists. Dental treatment is mainly performed in a sitting position. The aim of the study was to quantify the effect of different ergonomic chairs on the sitting position. In addition, it was tested if the sitting position of experienced workers is different from a non-dental group. Methods A total of 59 (28 m/31f) subjects, divided into two dentist groups according to their work experience (students and dentists (9 m/11f) < 10 years, dentists (9 m/10f) ≥ 10 years) and a control group (10 m/10f) were measured. A three-dimensional back scanner captured the bare back of all subjects sitting on six dentist’s chairs of different design. Initially, inter-group comparisons per chair, firstly in the habitual and secondly in the working postures, were carried out. Furthermore, inter-chair comparison was conducted for the habitual as well as for the working postures of all subjects and for each group. Finally, a comparison between the habitual sitting posture and the working posture for each respective chair (intra-chair comparison) was conducted (for all subjects and for each group). In addition, a subjective assessment of each chair was made. For the statistical analysis, non-parametric tests were conducted and the level of significance was set at 5%. Results When comparing the three subject groups, all chairs caused a more pronounced spinal kyphosis in experienced dentists. In both conditions (habitual and working postures), a symmetrical sitting position was assumed on each chair. The inter-chair comparisons showed no differences regarding the ergonomic design of the chairs. The significances found in the inter-chair comparisons were all within the measurementerror and could, therefore, be classified as clinically irrelevant. The intra-chair comparison (habitual sitting position vs. working sitting position) illustrated position-related changes in the sagittal, but not in the transverse, plane. These changes were only position-related (forward leaned working posture) and were not influenced by the ergonomic sitting design of the respective chair. There are no differences between the groups in the subjective assessment of each chair. Conclusions Regardless of the group or the dental experience, the ergonomic design of the dentist’s chair had only a marginal influence on the upper body posture in both the habitual and working sitting postures. Consequently, the focus of the dentist’s chair, in order to minimize MSD, should concentrate on adopting a symmetrical sitting posture rather than on its ergonomic design.

Risk Factors and their Interactions in VDT Workstation Systems

1996 ◽  
Vol 40 (13) ◽  
pp. 637-641 ◽  
Author(s):  
Hongzheng Lu ◽  
Fereydoun Aghazadeh
Keyword(s):  
Risk Factors ◽  
Physical Symptoms ◽  
Computer Users ◽  
Research Model ◽  
Factors Associated ◽  
Work Posture ◽  
Design Variables ◽  
Working Posture ◽  
Workstation Design ◽  
Working Postures

This study examined important risk factors and their interactions associated with physical symptoms reported by VDT users. A research model was developed. A survey was designed and conducted among 88 computer users. The results show that risk factors associated with various physical symptoms are different. Screen glare, awkward working posture, and fatigue are important factors related to physical symptoms. Psychosocial factors significantly interact with other variables, such as demographics variables, and contribute to awkward work posture and psychological stress. Workstation design variables significantly affect working postures.

scholarly journals Are “realistic” model atmospheres realistic enough?

2009 ◽  
Vol 5 (S265) ◽  
pp. 187-196 ◽  
Author(s):  
Bengt Gustafsson
Keyword(s):  
Realistic Model ◽  
Considerable Progress ◽  
Observational Methods ◽  
Construction Technology ◽  
Mixing Length ◽  
Late Type ◽  
Chemical Abundances ◽  
Stellar Spectra ◽  
Analysis Methods ◽  
Major Break

AbstractDuring the latest decades the number of papers on stellar chemical abundances has increased dramatically. This is basically reflecting the very great achievements in telescope- and spectrometer-construction technology. The analysis of the resulting stellar spectra, however, is still not up to the standard that is offered by the observational methods. Recent significant advances in the analysis methods (i.e., in constructing model atmospheres and model spectra to compare with the observed ones) is reviewed with the emphasis on the application to abundance analysis of late-type stars. It is found that the very considerable progress that have been made beyond mixing-length convection and LTE is a major break-through for physically consistent modeling. Still, however, further steps must be taken, in particular for the cooler stars, before the situation is fully satisifactory.

scholarly journals Concordance between VDU-users’ ratings of comfort and perceived exertion with experts’ observations of workplace layout and working postures

2005 ◽  
Vol 36 (3) ◽  
pp. 319-325 ◽  
Author(s):  
A. Lindegård ◽  
C. Karlberg ◽  
E. Wigaeus Tornqvist ◽  
A. Toomingas ◽  
M. Hagberg
Keyword(s):  
Perceived Exertion ◽  
Working Postures
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