Position localization is essential for visually impaired individuals to live independently. Comparing with outdoor environment in which the global positioning system (GPS) can be utilized, indoor positioning is more difficult due to the absence of the GPS signal and complex or unfamiliar building structure. In this paper, a novel landmark-based assistive system is presented for indoor positioning. Our preliminary tests in several buildings indicate that this system can provide accurate indoor location information.
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http://dx.doi.org/10.1109/ICOSP.2014.7015087 | DOI Listing |
Background: In this study, we implemented an indoor positioning system to track the activities of healthcare professionals during their shifts in an emergency department, aiming to gain a better understanding of the emergency care production process.
Methods: An ultrawideband-based tracking system was used in an experiment at the emergency department of Le Corbusier Hospital in Firminy, France. Over a 46-day period, healthcare professionals, including assistant nurses, nurses, doctors, and managers, wore a sensor to record their location within the emergency department.
IEEE Trans Image Process
March 2025
Existing localization methods commonly employ vision to perceive scene and achieve localization in GNSS-denied areas, yet they often struggle in environments with complex lighting conditions, dynamic objects or privacy-preserving areas. Humans possess the ability to describe various scenes using natural language to help others infer the location by recognizing or recalling the rich semantic information in these descriptions. Harnessing language presents a potential solution for robust localization.
View Article and Find Full Text PDFNatl Sci Rev
April 2025
Institute of Electromagnetic Space, and State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China.
The evolution of programmable metasurfaces has yielded many exciting electromagnetic (EM) phenomena and applications in both communities of physical and information sciences. Programmable metasurfaces, also known as reconfigurable intelligent surfaces or intelligent reflecting surfaces in wireless communications, have played important roles in enhancing signal coverage and transmission quality, and in building an artificially controlled communication environment. However, most of the realistic implementations are designed in the sub-6G band with a small array scale and 1-bit phase control ability, making the performance improvement not marvelous compared with the traditional solutions.
View Article and Find Full Text PDFWater Res
March 2025
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300072, China. Electronic address:
Quorum sensing (QS) is widespread in the microbial world and mediates microbial relationships in communities. However, the existing knowledge is far from a full description of the complex communication-based microbial interactions in engineered ecosystems, i.e.
View Article and Find Full Text PDFOrthop J Sports Med
March 2025
Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy.
Background: Despite published guidelines describing on-field rehabilitation (OFR) frameworks for soccer, available evidence for practitioners who work with players with anterior cruciate ligament reconstruction (ACLR) is limited.
Purpose: To document the activity and workloads completed by a large cohort of amateur and professional soccer players during OFR following ACLR after completing their indoor rehabilitation and to establish their return to competition (RTC) outcomes.
Study Design: Case series; Level of evidence, 4.
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