Estimation of work efficiency is one of the important tasks in company management and analysis of workers’ activities. The environment for determining the efficiency of workers is the use of one or ...more IS of any kind, within the framework of which the worker’s duties are accomplished. This process can be performed both from home (isolated from the work environment and co-workers) and in the office on-site. Another aspect is related to the fact that a worker can work both with only one IS, or with multiple specialised systems in parallel, which requires the simultaneous integration of several data sources and the parallel reading and analysis of information relevant to worker activities. The task of work efficiency estimation is especially complicated if the company’s activity domain is narrowly specific. In this case, solving such a task of working hour accounting and efficiency estimation is not a trivial accumulation of statistical data, but requires a dedicated method. The work of an engineering system designer is one of the examples of such specific activities. Therefore, exactly this domain was chosen as an application case of the method and metrics proposed in the paper.
To evaluate the real-time work efficiency and energy release of the active material Al/PTFE reaction process, a self-designed closed container experimental device was used to load two different ...ingrdients Al/PTFE (the mass percentages of Al/PTFE were 26.5%/73.5% and 50%/50%) through electric ignition Al/PTFE mixture sample, combining with overpressure sensor, transient optical fiber pyrometer, infrared thermal imager, transient response thermocouple and high-speed camera, the response test system composed of Al/PTFE deflagration the reaction process is monitored and recorded in real-time, and a theoretical model of work and energy release is established. The result shows that the deflagration reaction duration of 6.5 g active material Al/PTFE (ωAl = 26.5%) is about 0.185 s in a closed container; the work and energy release characteristics of Al/PTFE mixtures of different ingredients are different, and Al/PTFE (ωAl = 26.5%) is superior to Al/PTFE (ωAl = 50%) in work and energy release characteristics; Al/PTFE (ωAl = 26.5%) has a maximum working capacity of 4.86 kJ/g and a maximum energy release capacity of 12.64 kJ/g, the maximum work efficiency is 38.5%; however the maximum energy release capacity of Al/PTFE (ωAl = 50%) is 2.24 kJ/g, the maximum energy release capacity is 6.65 kJ/g, and the maximum work efficiency is 33.7%.
PURPOSE This study aims to develop a coach presenteeism scale with scientifically proven reliability and validity. METHODS In order to achieve the research purpose, preliminary questions were drafted ...using previous studies (Lee & Kim, 2022) and existing presentation questionnaires (SPS-34, SPS-6, SPS-13). The preliminary set of questions was composed of 23 questions, which were deliberated through a meeting with subject experts. After which, a survey involving 183 coaches was conducted. In this study, statistical verification procedures were conducted through construct validation, exploratory factor analysis, confirmatory factor analysis, internal consistency analysis, convergent validation and discriminant validation. RESULTS Finally, a 2-factor (DRA 5 items, DTP 5 items), 10-item coach presenteeism scale was developed. CONCLUSIONS In this study, a scale with verified reliability and validity was developed to support and investigate the presenteeism phenomenon experienced by coaches. These may be used by coaches themselves to check their presenteeism status and may guide future research to effectively train athletes.
This study examines the mediating effect of knowledge sharing on work efficiency, which influenced by social networking, reputation, and social interactions. A survey questionnaire conducted among ...320 respondents. The result of hypothesis testing was conducted by Smart PLS 3.0. The result shows that social networking and reputation were directly and significantly related to work efficiency. Meanwhile, social interactions were not directly significant related to work efficiency. The knowledge sharing was found to be directly and significantly related to work efficiency. Knowledge sharing mediates the relationship between social networking, reputation, social interactions, and work efficiency. The results of this study could foster organizations to be able to support the knowledge sharing process among employees in a conducive manner to improve work efficiency. Organizations can also encourage the effectiveness of knowledge sharing by giving awards to employees who have participated as contributors. This is intended to reduce the tendency to be reluctant to share knowledge among employees. Further research can be explored more deeply factor that influence work efficiency such as communication, time management, and work culture.
Abstract
With the development of science and technology, computer technology is becoming more and more advanced. Nowadays, computers have been widely used in people’s lives, gradually changing ...people’s way of life. The application of computer technology has brought great convenience to people’s life. The combination of computer and library information management makes library management more convenient and fast. At the same time, the use of computer software also saves a lot of manpower and material resources, and the book management work becomes very simple.
PurposeWhile prior research provides interesting insights into the effect of social media use in enterprises, there is limited research on how use of different social media platforms affects employee ...job satisfaction and work efficiency. This study developed a research model to investigate how public and private social media platforms used for different motivations affect employee job satisfaction and work efficiency.Design/methodology/approachOnline surveys were conducted in China, generating 453 valid responses for analysis. Structural equation modeling is performed to test the research model and hypotheses.FindingsThe results suggest that (1) public social media used for both work- and social-related motivations positively affects employee job satisfaction, while private social media only used for social-related motivations can contribute to employee job satisfaction. (2) Public and private social media used for work-related motivations can contribute to employee work efficiency, while social-related motivations for use of public and private social media and employee work efficiency are not significant. (3) In the process of social media usage influencing employee job satisfaction and work efficiency, employees of different genders show significant differences.Originality/valueFirst, this paper contributes to information systems social media research by examining the joint effects of different motivations for public and private social media usage on employee job satisfaction and work efficiency in organizations. Second, it contributes to uses and gratification theory by clarifying the relationship between different motivations for enterprise social media use and its needs.
The presence of right ventricular dysfunction indicates a higher risk status in patients with pulmonary embolism (PE). The RV strain evaluated by speckle-tracking echocardiography seems to be more ...reliable method in the evaluation of RV dysfunction as compared to standard echocardiographic measures. In this study, we aimed to determine the value of myocardial-work indices in evaluating serial changes of RV function in acute PE.
Our study comprised 83 consecutive acute PE patients who admitted to our tertiary cardiovascular hospital. Echocardiography was performed within the first 24-hours of hospitalization, and RV and LV myocardial-work parameters were obtained along with standard echocardiographic parameters. The change in the RV/LVr detected on tomography was selected as the primary outcome measure, and its' predictors were analyzed with classical linear regression and a generalized additive model (GAM).
Among the LV-RV strain and myocardial work parameters, the RV global longitudinal strain (GLS) has borderline statistical significance in predicting the RV/LVr change whereas the RV global work efficiency (RV-GWE) strongly predicted RV/LVr change (p: 0.049 and <0.001, respectively).
In this study, classical linear regression and GAM analyses showed that RV-GWE seems to offer a better prediction of RV/LVr change in patients with acute PE.
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