scholarly journals An Investigation of the Effects of Changes in the Indoor Ambient Temperature on Arousal Level, Thermal Comfort, and Physiological Indices

2019 ◽  
Vol 9 (5) ◽  
pp. 899 ◽  
Author(s):  
Jongseong Gwak ◽  
Motoki Shino ◽  
Kazutaka Ueda ◽  
Minoru Kamata

Thermal factors not only affect the thermal comfort sensation of occupants, but also affect their arousal level, productivity, and health. Therefore, it is necessary to control thermal factors appropriately. In this study, we aim to design a thermal environment that improves both the arousal level and thermal comfort of the occupants. To this end, we investigated the relationships between the physiological indices, subjective evaluation values, and task performance under several conditions of changes in the indoor ambient temperature. In particular, we asked subjects to perform a mathematical task and subjective evaluation related to their thermal comfort sensation and drowsiness levels. Simultaneously, we measured their physiological parameters, such as skin temperature, respiration rate, electroencephalography, and electrocardiography, continuously. We investigated the relationship between the comfort sensation and drowsiness level of occupants, and the physiological indices. From the results, it was confirmed that changes in the indoor ambient temperature can improve both the thermal comfort and the arousal levels of occupants. Moreover, we proposed the evaluation indices of the thermal comfort and the drowsiness level of occupants using physiological indices.

2020 ◽  
Vol 48 (3) ◽  
pp. 1-10 ◽  
Author(s):  
He Ding ◽  
Enhai Yu ◽  
Yanbin Li

We investigated the mediating effects of positive affect and strengths use in the relationship between perceived organizational support for strengths use (POSSU) and employees' task performance. Data were gathered at 2 time points, separated by a 2-week interval, from 157 employees working in various Chinese enterprises. We applied structural equation modeling and PROCESS macro analysis to the data. The results indicate that POSSU was positively related to task performance and that this relationship was mediated by strengths use. In addition, positive affect and strengths use played a sequential mediating role in the relationship between POSSU and task performance. However, positive affect was not a significant mediator in the POSSU–task performance relationship. Theoretical and managerial implications are discussed in the context of the literature on POSSU and task performance.


2017 ◽  
Vol 38 (5) ◽  
pp. 630-645 ◽  
Author(s):  
Won Ho Kim ◽  
Young-An Ra ◽  
Jong Gyu Park ◽  
Bora Kwon

Purpose The purpose of this paper is to examine the mediating role of burnout (i.e. exhaustion, cynicism, professional inefficacy) in the relationship between job level and job satisfaction as well as between job level and task performance. Design/methodology/approach The final sample included 342 Korean workers from selected companies. The authors employed the Hayes (2013) PROCESS tool for analyzing the data. Findings The results showed that all three subscales of burnout (i.e. exhaustion, cynicism, professional inefficacy) mediate the relationship between job level and job satisfaction. However, only two mediators (i.e. cynicism, professional inefficacy) indicated the mediating effects on the association between job level and task performance. Originality/value This research presented the role of burnout on the relationships between job level, job satisfaction, and task performance especially in South Korean organizational context. In addition to role of burnout, findings should prove helpful in improving job satisfaction and task performance. The authors provide implications and limitations of the findings.


Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4997
Author(s):  
Victor C. Le ◽  
Monica L. H. Jones ◽  
Kathleen H. Sienko

Postural sway has been demonstrated to increase following exposure to different types of motion. However, limited prior studies have investigated the relationship between exposure to normative on-road driving conditions and standing balance following the exposure. The purpose of this on-road study was to quantify the effect of vehicle motion and task performance on passengers’ post-drive standing balance performance. In this study, trunk-based kinematic data were captured while participants performed a series of balance exercises before and after an on-road driving session in real-time traffic. Postural sway for all balance exercises increased following the driving session. Performing a series of ecologically relevant visual-based tasks led to increases in most post-drive balance metrics such as sway position and velocity. However, the post-drive changes following the driving session with a task were not significantly different compared to changes observed following the driving session without a task. The post-drive standing balance performance changes observed in this study may increase vulnerable users’ risk of falling. Wearable sensors offer an opportunity to monitor postural sway following in-vehicle exposures.


2017 ◽  
Vol 8 (7) ◽  
pp. 16
Author(s):  
Jih-Hua Yang ◽  
Shih-Chieh Fang ◽  
Ching-Ying Huang

This study aimed to determine the mediating role of competency (professional competency, technical competency, and core competency) between training and task performance in pharmacists. Questionnaire was the tool of collecting data from a sample of (210) pharmacists. The results of the study indicated that there is a positive effect of training on task performance. Also, there is full effect of the two mediator variables (professional competency; technical competency) and partial effect of the one mediator variable (core competency) on the relationship between independent and dependent variables.


Author(s):  
Christie M. Fuller ◽  
Douglas P. Twitchell ◽  
Kent Marett ◽  
A. J. Burns

The relationship between trust and task performance in virtual teams is well established. Currently, studies examine key antecedent to trust in groups, the perceived ability of other group members. While it has been shown that perceived ability of teammates contributes to trust, little is known about how the perceptions of ability are formed in virtual teams. In this study, teams performed a decision-making task in a synchronous computer-mediated communication environment. As teams were limited to verbal communication, the authors examined the relationship between participant ability and verbal communication amount, as well as team member perceptions of their partners’ ability based on the amount of participation. The results show that participants who perceive themselves to have higher ability communicate more, whereas those who speak more are rated by their teammates to have lower ability. Based on the results, post hoc analysis explored the relationship between reduced participation and perceived ability.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fiona Edgar ◽  
Jing A. Zhang ◽  
Nancy M. Blaker

PurposeDrawing on the dynamic model of ability, motivation, opportunity (AMO) for human resource research, this study aims to examine how organizational system-level (i.e. the high-performance work system (HPWS)) and individual-level AMO affect employees' performance. Specifically, this paper proposes that employee task performance is resultant from the integration of system- and individual-level AMO factors with employee contextual performance.Design/methodology/approachA survey design is employed with data collected from 250 employees working in New Zealand's service sector.FindingsThis study finds both organizational system (HPWS) and individual AMO dimensions have positive associations with employees' performance. At the system level, the supportive role played by contextual performance is highlighted with pro-social behaviors fully mediating the relationship between the HPWS and task performance. At the individual level, contextual performance is found to partially mediate the relationship between ability and task performance and fully mediate the relationship between motivation and task performance. Opportunity, on the other hand, is significantly associated with task but not contextual performance.Originality/valueIn acknowledging there are a plurality of factors that impact performance, this study enriches our understanding of AMO's influence in the context of people management.


Interpreting ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 196-219 ◽  
Author(s):  
Zhiwei Wu

Abstract This paper reports on an exploratory study examining the relationship between text characteristics, perceived difficulty and task performance in sight translation (ST). Twenty-nine undergraduate interpreters were asked to sight-translate six texts with different properties. Correlation analysis shows that Sophisticated Word Type and Mean Length of a T-unit are, respectively, the lexical and the syntactic variables having the highest correlations with all the three dependent variables (i.e. perceived difficulty, accuracy and fluency in ST performance). Surprisingly, the discoursal variables are weakly or modestly correlated with the dependent variables. Thematic analysis of the students’ reflective essays points to two hypothesized causal links among the three Ps in ST: task properties may cause decoding difficulties and cognitive overload in the cognitive process, which in turn lead to inaccuracy and dysfluency in ST performance. The research findings lend empirical support to the “shallow-scan hypothesis” in previous research. Finally, this study proposes a three-tier conceptual framework to inform and guide future research to operationalize variables in ST empirical studies. The pedagogical implications of ST are also discussed.


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