Enabling Design of Middleware for Massive Scale IOT-based Systems

Recently, the Internet of Things (IoT) technology has rapidly advanced to the stage where it is feasible to discover, locate and identify various smart sensors and devices based on the context, situation, characteristics, and relevancy to query for their data or control actions. Taking things a step further when developing Large Scale Applications requires that two serious issues be overcome. The first issue is to find a solution for data sensing and collection from a massive number of various ubiquitous devices when converging these into the next generation networks. The second important issue is to deal with the “Big Data” that arrive from a very large number of sources. This research emphasizes the need for finding a solution for a large scale data aggregation and delivery. The paper introduces biomimetic design methods for data aggregation in the context of large scale IoT-based systems

People Lifting Patterns—A Reference Dataset for Practitioners

Many health professionals do not use correct person transfer techniques in their daily practice. This results in damage to the paraspinal musculature over time, resulting in lower back pain and injuries. In this work, we propose an approach for the accurate multimodal measurement of people lifting and related motion patterns for ergonomic education regarding the application of correct patient transfer techniques. Several examples of person lifting were recorded and processed through accurate instrumentation and the well-defined measurements of kinematics, kinetics, surface electromyography of muscles as well as multicamera video. This resulted in a complete measurement protocol and unique reference datasets of correct and incorrect lifting schemes for caregivers and patients. This understanding of multimodal motion patterns provides insights for further independent investigations

Virtual reality poststroke rehabilitation with localization algorithm enhancement

© 5th International Conference of the Virtual and Augmented Reality in Education, VARE 2019. All rights reserved. The work presents an analysis of the application of virtual reality technology in rehabilitation after the occurrence of stroke. The needs in poststroke therapy, as well as the requirements and technological possibilities were investigated, with the result being the creation of the application for post-stroke rehabilitation. Tests on the application, as well as analyzed studies have shown that this way of rehabilitation as an isolated therapy is not enough to improve the condition of patients. The combination of rehabilitation in a virtual and conventional manner provides a positive effect on the improvement of medical patient motor functions based on the surveyed patients

Motion Capture Analysis Supporting Lifting Technique Optimization for Occupational Safety Diagnosis

© 2020, Springer Nature Switzerland AG. Musculoskeletal function disorders are the most common health problem in the European Union. Improper strain on the musculoskeletal system, during the daily activities of work, constitutes an important source of concern because of the health effects of the employee, as well as the financial consequences for the employer. Additionally, time off work and social costs are also a notable concern. In some countries, musculoskeletal disorders represent 40% of employee compensation costs and up to 1.6% of the state’s Gross Domestic Product [3]

Photometry and model of near-Earth asteroid 2021 DW1 from one apparition

Aims. Very small asteroids (VSAs, objects with diameters smaller than about 150 m) can be spun up by the YORP effect to rotation periods as short as tens of seconds. This effect has been observed for many of them. It is also hypothesised, that in the same process their spin axes are asymptotically drawn to the position perpendicular to the orbital plane. So far this effect has been observed only for one VSA and needs further verification. For that, spin axes of several other VSAs should be determined by observing their brightness variations at many different positions on the sky. Methods. On 4 March 2021 at 9 UTC a 30-m in diameter near-Earth asteroid 2021 DW1 passed the Earth at a distance of 570 000 km, reaching the maximum brightness of V = 14.6 mag. We observed it photometrically from 2 March, when it was visible at V = 16.5 mag, until 7 March (V = 18.2 mag). During that time 2021 DW1 swept a 170° long arc in the northern sky, spanning solar phase angles in the range from 36° to 86°. This made it an excellent target for physical characterisation, including spin axis and shape derivation. Results. Convex inversion of the asteroid lightcurves gives a sidereal period of rotation Psid = 0.013760 ± 0.000001 h, and two solutions for the spin axis ecliptic coordinates: (A) λ1 = 57° ± 10°, β1 = 29° ± 10° and (B) λ2 = 67° ± 10°, β2 = −40° ± 10°. The magnitude-phase curve can be fitted with a standard H, G function with H = 24.8 ± 0.5 mag and an assumed G = 0.24. The asteroid colour indices are g − i = 0.79 ± 0.01 mag, and i − z = 0.01 ± 0.02 mag which indicates an S taxonomic class, with an average geometric albedo pV = 0.23 ± 0.02. The asteroid effective diameter, derived from H and pV, is Deff = 30 ± 10 m. Conclusions. It was found that the inclination of the spin axis of 2021 DW1 is not perpendicular to the orbital plane (obliquity ϵ = 54° ± 10° or ϵ = 123° ± 10°). More spin axes of VSAs should be determined to check, if 2021 DW1 is an exception or a typical case.T.K., A.K., and D.O. were supported by a grant No.2017/25/B/ST9/00740 from the National Science Centre, Poland. T. Kim was supported by the Korea Astronomy and Space Science Institute under the R&D program (Project No. 2020-1-600-05) supervised by the Ministry of Science and ICT (MSIT), and the National Research Foundation of Korea (NRF) Grant No. 2020R1A2C3011091, funded by MSIT. The work by T.S.-R. was carried out through a grant APOSTD/2019/046 by Generalitat Valenciana (Spain). He was also supported by the MINECO (Spanish Ministry of Economy) through a grant RTI2018-095076-B-C21 (MINECO/FEDER, UE)

2019 HL4

Available from the Minor Planet Center

2019 HJ4

Available from the Minor Planet Center