Browsing by Subject "Wearable technology"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Activity recognition invariant to sensor orientation with wearable motion sensors
    (MDPI AG, 2017) Yurtman, A.; Barshan, B.
    Most activity recognition studies that employ wearable sensors assume that the sensors are attached at pre-determined positions and orientations that do not change over time. Since this is not the case in practice, it is of interest to develop wearable systems that operate invariantly to sensor position and orientation. We focus on invariance to sensor orientation and develop two alternative transformations to remove the effect of absolute sensor orientation from the raw sensor data. We test the proposed methodology in activity recognition with four state-of-the-art classifiers using five publicly available datasets containing various types of human activities acquired by different sensor configurations. While the ordinary activity recognition system cannot handle incorrectly oriented sensors, the proposed transformations allow the sensors to be worn at any orientation at a given position on the body, and achieve nearly the same activity recognition performance as the ordinary system for which the sensor units are not rotatable. The proposed techniques can be applied to existing wearable systems without much effort, by simply transforming the time-domain sensor data at the pre-processing stage. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
  • Thumbnail Image
    ItemOpen Access
    Crowdfunding for financing wearable technologies
    (IEEE, 2016) Tanrısever, Fehmi; Wismans-Voorbraak, K. -A.
    We explore electronic crowdfunding platforms as a means of receiving money and other resources by an entrepreneur from many parties for financing wearable technology project. The electronic platform determines the cost of funding for the entrepreneur and the return investors will receive per period. This research aims to develop a framework to understand and evaluate the quantitative and qualitative implications of various crowdfunding platforms for the entrepreneur and his investment decisions in wearable technologies. We consider a debt financing based platform and examine its operational implications on the entrepreneur's decisions. In addition, we identify the incentive problems that occur in these models. © 2016 IEEE.