An EEG workload classifier for multiple subjects
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EEG data has been used to discriminate levels of mental workload when classifiers are created for each subject, but the reliability of classifiers trained on multiple subjects has yet to be investigated. Artificial neural network and naive Bayesian classifiers were trained with data from single and multiple subjects and their ability to discriminate among three difficulty conditions was tested. When trained on data from multiple subjects, both types of classifiers poorly discriminated between the three levels. However, a novel model, the naive Bayesian classifier with a hidden node, performed nearly as well as the models trained and tested on individuals. In addition, a hierarchical Bayes model with a higher level constraint on the hidden node can further improve its performance.Control of pilot workload may prevent performance failure of VRF pilots in adverse weather. Measurement of workload and the prediction of performance failure are the first steps. Twelve low-time non-instrument rated pilots were progressively tasked with flight maneuvers under simulated instrument meteorological conditions to the point of performance failure. For each of 3 simulated flights, 14 maneuvers, presented in groups, were performed. Perceived workload was reported by the Subjective Workload Assessment Technique. We obtained 500 workload scores. Workload scores varied significantly between the groups of maneuvers. Instrument landing system approaches had the highest workloads, with descents the second highest. Workload scores were significantly higher when associated with performance failure. The Subjective Workload Assessment Technique proved to be a sensitive workload measure. It showed some promise as a predictor of performance breakdown.
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Abstract : In a previous study on the activity of the nervous system during the let-down, approach and landing of a transport aircraft the workload was assessed by the pilot. Correlations were established between overall workload of the let-down and individual factors which influence the workload pattern and between the subjective assessments of workload and physiological change in the pilot. In the present paper assessments of workload over a four-year period have been examined to determine the technique used by the pilot to evaluate workload from the various factors of the let-down and to assess the consistency of his technique. (Author)
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Studies utilizing a systems perspective show that individual work system elements impact surgeon workload. However, limited work has shown how multiple elements together can affect perceived workload in the healthcare domain. Using NASA-Task Load Index (NASA-TLX), this study aimed to compare operating room workload across two work system factors (surgical specialty and case number of the day) using a large set of self-reported surgeon workload data. Thirty-two surgeons completed 545 workload surveys across a three month period. Surgeons reported significant differences in composite workload scores across the surgical specialties (F(7,544)=3.622, p=0.001). Significant interactions were identified between surgical specialty and case number for composite workload, F(20,534)=1.72, p=0.027. While such findings are promising, future work is needed across multiple institutions to establish baseline workload values across specialties with different patient characteristics and work systems.
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Baseline (sea)
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The aim of this study was to compare the workload between tasks undertaken manually and those with the assistance of mechanical devices. The results indicate that the workload during the tasks assisted by mechanisation was usually very low or relatively low. Statistical analysis showed the impact of the way of the work performance on the workload. However, the results also indicate that the workload is not evenly distributed: the effort relating to the working tasks is larger in relation to the work of women than men. The need for mechanisation of the tasks performed by women is higher than that for the mechanisation of tasks performed by men. The type of work performance (manual, or technically assisted) did not clearly show significant differences in the workload. This surprising result indicates that the technical devices used on many farms are still far from perfect. It is concluded that assisting work with mechanical devices reduces the workload of farmers, but the way of work performance (manual or mechanical) was not statistically significant.
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The calculation of university teachers' teaching workload has a direct impact on the teachers’ work initiative and incentive mechanism.This article takes two factors—the quality and quantity in university teachers’ teaching work—as the basis for comprehensive assessment in establishing a calculation model for teaching workload so that the calculation of teaching workload can achieve more of objectiveness,comprehensiveness,fairness and feasibility.
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Driver mental workload is an often studied concept, however less attention is given to the question of transitions in driver workload. Fourteen adult drivers completed a simulated driving task following a navigation system which would fail at certain intervals. Subjective measures of driver workload were taken and demonstrate that the recovery from a driving stressor is asymmetrical and time-delayed. Drivers' subjective ratings of workload remained high after the stressors were removed. Findings and implications are discussed.
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Driving simulator
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Abstract In a real work situation the operative strategy choosen by subjects depends on three variables, the characteristics of the operator (training, motivation, age, health, etc.); the characteristics of the task, i.e. the level of task requirements; and the level of workload, which itself results from the operative strategy. Ergonomista try often to measure the workload, but do not pay enough attention to the regulating effects exerted by the workload, through feed-back, on the strategy used by operators. This paper summarizes an experimental study carried out in a ATCC, showing how air traffic controllers modify their operative methods when workload increases.
Operator (biology)
Variation (astronomy)
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This paper reviews selected literature on workload, noting critical issues and efforts directed at a more equitable estimation, assignment and evaluation of faculty workload. It underlines the need to consider all factors and aspects of faculty work in assigning and evaluating workload. A flexible approach to evaluation is advocated since faculty have different strengths and interests and departments have different demands and requirements. It is also suggested that flexible formulas may be applied in evaluating faculty at the College of The Bahamas and that they need not be measured in an identical or uniform manner.
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Teacher Workload Measure is an important indicator of teaching and research work of teachers.Teacher workload is art important part of the management.In this paper,in view of the needs of teaching workload management in colleges,and in combination with the workload management process of Jixi University,the paper introduces the design and implementation of teacher workload management system using VB language design and program.
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