24 research outputs found
Seeking Optimum System Settings for Physical Activity Recognition on Smartwatches
Physical activity recognition (PAR) using wearable devices can provide valued
information regarding an individual's degree of functional ability and
lifestyle. In this regards, smartphone-based physical activity recognition is a
well-studied area. Research on smartwatch-based PAR, on the other hand, is
still in its infancy. Through a large-scale exploratory study, this work aims
to investigate the smartwatch-based PAR domain. A detailed analysis of various
feature banks and classification methods are carried out to find the optimum
system settings for the best performance of any smartwatch-based PAR system for
both personal and impersonal models. To further validate our hypothesis for
both personal (The classifier is built using the data only from one specific
user) and impersonal (The classifier is built using the data from every user
except the one under study) models, we tested single subject validation process
for smartwatch-based activity recognition.Comment: 15 pages, 2 figures, Accepted in CVC'1
Phytoplankton across Tropical and Subtropical Regions of the Atlantic, Indian and Pacific Oceans
Postprint4,411
Algae as a Potential Source of Biokerosene and Diesel – Opportunities and Challenges
In times of dwindling petroleum reserves, microalgae may pose an alternate energy resource. Their growth is vast under favorable conditions. However, producing microalgae for energy in an economically as well as ecologically feasible way is a difficult task and the prospects are challenging. The chapter gives an insight into perspectives of growing microalgae as a crop, highlighting some of their exceptional energy storage properties in regard to commercial exploitation. Large scale algae production techniques and concepts up to downstream processes are presented. Today, conversion to fuels is constrained by energy usage and costs – but future combination of fuel production with added value products may improve balances and lower the industrial CO2 footprint. These challenges drive research and industry worldwide to constant improvement, supported by numerous funding opportunities. Microalgae in their tremendous diversity are a young and still very much unexplored crop. It is a challenge worth addressing