| 1. |
- Fan, Xuelong, et al.
(författare)
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Effects of sensor types and angular velocity computational methods in field measurements of occupational upper arm and trunk postures and movements
- 2021
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Ingår i: Sensors. - : MDPI AG. - 1424-8220. ; 21:16
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Tidskriftsartikel (refereegranskat)abstract
- Accelerometer-based inclinometers have dominated kinematic measurements in previous field studies, while the use of inertial measurement units that additionally include gyroscopes is rapidly increasing. Recent laboratory studies suggest that these two sensor types and the two commonly used angular velocity computational methods may produce substantially different results. The aim of this study was, therefore, to evaluate the effects of sensor types and angular velocity computational methods on the measures of work postures and movements in a real occupational setting. Half-workday recordings of arm and trunk postures, and movements from 38 warehouse workers were compared using two sensor types: accelerometers versus accelerometers with gyroscopes—and using two angular velocity computational methods, i.e., inclination velocity versus generalized velocity. The results showed an overall small difference (<2° and value independent) for posture percentiles between the two sensor types, but substantial differences in movement percentiles both between the sensor types and between the angular computational methods. For example, the group mean of the 50th percentiles were for accelerometers: 71°/s (generalized velocity) and 33°/s (inclination velocity)—and for accelerometers with gyroscopes: 31°/s (generalized velocity) and 16°/s (inclination velocity). The significant effects of sensor types and angular computational methods on angular velocity measures in field work are important in inter-study comparisons and in comparisons to recommended threshold limit values.
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| 2. |
- Forcellati, Corrado Lillelund, et al.
(författare)
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Support for Financial Decision-Making
- 2021
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Ingår i: Maritime Informatics. Lind, M., Michaelides, M., Ward, R., T. Watson, R. (Eds.). - Cham : Springer. - 9783030508913 ; , s. 255-273, s. 255-273
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Bokkapitel (refereegranskat)abstract
- This chapter explores some of the financial processes where maritime informatics could make a difference and improve existing practices. The chapter takes the principle logic of how maritime transport serves the cargo owner, the passenger, or the transport buyer. The chapter acknowledges different types of costs and risks associated with maritime transport, such as capital, operational, voyage costs and environmental, social, and governance (ESG)-related costs to meet business needs and comply with regulatory requirements. Building upon the role of maritime informatics to achieve transparency, control, mitigate risks, and reduce the costs within each of these categories, different opportunities are acknowledged and associated with different shipping segments. Consideration is also given to economic advantage, resilience, compliance, and sustainability emerging from transparency in financial processes that comes with digital data sharing. The chapter provides a practical framework to identifying the role of maritime informatics in supporting financial management and decision-making by classifying cost/risk categories and digital data streams of relevance by looking at three dimensions: resiliency, compliance, and sustainability.
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