20 papers · ranked by Valyu relevance
Zihan Song, Hye-Jin Park, Ngeemasara Thapa, Ja-Gyeong Yang + 9 more
Current step-count estimation techniques use either an accelerometer or gyroscope sensors to calculate the number of steps. However, because of smartphones unfixed placement and direction, their accuracy is insufficient. It is necessary to consider the impact of the carrying position on the accuracy of the pedometer…
Jing Wang, Ulrich Bork, Sharareh Rostam Niakan Kalhori, George Boateng + 5 more
'George Boateng' 'Curtis L Petersen' 'David Kotz' 'Karen L Fortuna' 'Rebecca Masutani' 'John A Batsis'] Background Older adults who engage in physical activity can reduce their risk of mobility impairment and disability. Short amounts of walking can improve quality of life, physical function, and cardiovascular health.…
Valeria Filippou, Michael R. Backhouse, Anthony C. Redmond, David C. Wong + 5 more
'David C. Wong' 'Ioannis Yiannis Kompatsiaris' 'Stefanos Vrochidis' 'Georgios Meditskos' 'Periklis Chatzimisios' 'Athina Tsanousa'] This study aimed to develop and evaluate a new step-count algorithm, StepMatchDTWBA, for the accurate measurement of physical activity using wearable devices in both healthy and…
C. Ladha, Z. Belshaw, J. O’Sullivan, L. Asher
Background Accelerometer-based technologies could be useful in providing objective measures of canine ambulation, but most are either not tailored to the idiosyncrasies of canine gait, or, use un-validated or closed source approaches. The aim of this paper was to validate algorithms which could be applied to…
Guoliang Chen, Xiaolin Meng, Yunjia Wang, Yanzhe Zhang + 3 more
'Huachao Yang' 'Kourosh Khoshelham'] Because of the high calculation cost and poor performance of a traditional planar map when dealing with complicated indoor geographic information, a WiFi fingerprint indoor positioning system cannot be widely employed on a smartphone platform. By making full use of the hardware…
Buke Ao, Yongcai Wang, Hongnan Liu, Deying Li + 2 more
Walk detection (WD) and step counting (SC) have become popular applications in the recent emergence of wearable devices. These devices monitor user states and process data from MEMS-based accelerometers and optional gyroscope sensors. Various algorithms have been proposed for WD and SC, which are generally sensitive to…
Yong Jun Kwon, Thawda Aung, Sarah M Synovec, Anthony D Oberle + 6 more
The ubiquitous spread of smartphone technology throughout global societies offers an unprecedented opportunity to ethically obtain long-term, highly accurate measurements of individual physical activity. For example, the smartphone intrinsic 3-D accelerometer can be queried during normal phone operation to save time…
Lily Koffman, Ciprian Crainiceanu, John Muschelli
Accelerometry Data in NHANES 2011-2014 Authors: ['Lily Koffman' 'Ciprian Crainiceanu' 'John Muschelli'] Five step counting algorithms (four open source and one proprietary) were applied to the publicly available, free-living, high-resolution wrist accelerometry data collected by the National Health and Nutrition…
Saida Salima Nawrin, Hitoshi Inada, Haruki Momma, Ryoichi Nagatomi
Physical activity is a crucial aspect of health benefits in the public society. Although studies on the temporal physical activity patterns might lead to the protocol for efficient intervention/program, a standardized procedure to determine and analyze the temporal physical activity patterns remains to be developed.…
Biswanath Sethi, Souvik Roy, Sukanta Das
This paper designs an efficient two-class pattern classifier utilizing asynchronous cellular automata (ACAs). The two-state three-neighborhood one-dimensional ACAs that converge to fixed points from arbitrary seeds are used here for pattern classification. To design the classifier, we first identify a set of ACAs that…
Cameron Musco, Hsin-Hao Su, Nancy Lynch
Many ant species employ distributed population density estimation in applications ranging from quorum sensing [Pra05], to task allocation [Gor99], to appraisal of enemy colony strength [Ada90]. It has been shown that ants estimate density by tracking encounter rates – the higher the population density, the more often…
Authors not listed
Atomistic simulations provide essential mechanistic insights into chemical processes, yet many important phenomena in chemistry and materials science occur on timescales that are inaccessible to molecular dynamics. Existing computational approaches force a choice between atomic resolution on relatively short timescales…
Authors not listed
Stochastic Simulation Algorithms (SSA) are a cornerstone in simulating Free Radical Polymerization (FRP) due to their accuracy and reliability. However, computational inefficiency remains a challenge for large-scale and complex polymerization systems. This work introduces a novel stochastic simulation algorithm…
Rhys Munden, Luca Börger, Rory P. Wilson, James Redcliffe + 3 more
Step selection analysis (SSA) is a fundamental technique for uncovering the drivers of animal movement decisions. Its typical use has been to view an animal as “selecting” each measured location, given its current (and possibly previous) locations. Although an animal is unlikely to make decisions precisely at the times…
Vladimir Kaplun, Michael Segal
— Connected Vehicles network is designed to provide a secure and private method for drivers to use the most efficiently the roads in certain area. When dealing with the scenario of car to access points connectivity (Wi-Fi, 3G, LTE), the vehicles are connected by central authority like cloud. Thus, they can be monitored…
Oswaldo Cadenas, Graham M. Megson
A new method for binning a set of n data values into a set of m bins for the case where the bins are of different sizes is proposed. The method skips binning using a binary search across the bins all the time. It is proven the method exhibits a linear average-case computation time. The experiments' results show a…
David M. Desmet, Joseph P. Cusumano, Jonathan B. Dingwell
To successfully traverse their environment, humans must often perform maneuvers to achieve desired task goals while simultaneously maintaining balance. Humans accomplish these tasks primarily by modulating their foot placements. As humans are more unstable laterally, we must better understand how humans modulate…
Oskar Weser, Kai Guther, Khaldoon Ghanem, Giovanni Li Manni
An algorithm to perform stochastic generalized active space calculations, Stochastic-GAS, is presented, that uses the Slater determinant based FCIQMC algorithm as configuration interaction eigensolver. Stochastic-GAS allows the construction and stochastic optimization of preselected truncated configuration interaction…
Keisuke Ozawa
Statistically weighted principal component analysis (wPCA) is widely used to reduce the noise of scanning transmission electron microscopy-energy-dispersive X-ray (STEM-EDX) spectroscopy data. It is beneficial to retain the spatial resolution of observation in each step of the analysis, but the direct application of…
Authors not listed
Building on prior mathematical formulations of the periodic law, this paper demonstrates that the algebraic formula S(k) = 2 * (floor(k/2) + 1)^2 accurately predicts the period lengths (2, 8, 8, 18, 18, 32, ...) of the periodic table. This pattern is not a numerical coincidence but a direct consequence of the…