Driven by the rise of market demand and development of technology, high-precision motion systems must meet the increasing accuracy requirement. Currently, High-precision positioning stage is widely used in many different application areas, such as hard disk drives, wafer steppers and electron and atomic force microscopes for nano-scale imaging. Classical PID control which occupied 95% of precis...

In the past few years, we have witnessed a rise in the popularity of ride-hailing services (RHSs), an online marketplace that enables accredited drivers to use their own cars to drive ride-hailing users. Unlike other transportation services, RHSs raise significant privacy concerns, as providers are able to track the precise mobility patterns of millions of riders worldwide. We present the first...

A common trade-off in product design is form versus function. While function is typically analyzed and understood quite well, user preferences for the visual shape of a form are not. Product shape has become an increasingly important market differentiator, and so the need for better shape preference analysis has also increased. Conjoint analysis and PREFMAP are preference assessment techniques ...

Abstract: A global observer is designed for strongly detectable systems with unbounded unknown inputs. The design of the observer is based on three steps. First, the system is extended taking the unknown inputs (and possibly some of their derivatives) as a new state; then, using a global high-order sliding mode differentiator, a new output of the system is generated in order to fulfill the Haut...

The problem of constructing functional observers for linear systems with unknown inputs is considered. Necessary and sufficient conditions for the existence of a proper observer (without differentiations) are revisited. A simple and explicit form of a functional observer is presented. It is shown that when such observer is not proper, it is still possible to use the High-Order Sliding Mode diff...

This study empirically explores root progression theories as a differentiator between tonal and pre-tonal music with a statistical corpus analysis of Palestrina Madrigals and Bach Chorales. Results found some quantitative evidence in the corpora for Rameau’s rule-based root progression theory and Meeus’ symmetry between “dominant” and “subdominant” root progressions. Further investigation revea...

Animals need to discriminate differences in spatiotemporally distributed sensory signals in terms of quality as well as quantity for generating adaptive behavior. Olfactory signals characterized by odor identity and concentration are intermittently distributed in the environment. From these intervals of stimulation, animals process odorant concentration to localize partners or food sources. Alt...

This paper proposes an adaptive neural-network-based nonsingular fast terminal sliding mode (NN-NFTSMC) approach to address the trajectory tracking control problem of a quadrotor in presence model uncertainties and external disturbances. First, dynamic with uncertainty is derived. Then, scheme using (NFTSMC) proposed guarantee finite-time convergence its desired trajectory. NFTSMC firstly formu...

The connectivity of the nervous system of the nematode Caenorhabditis elegans has been described completely, but the analysis of the neuronal basis of behavior in this system is just beginning. Here, we used an optimization algorithm to search for patterns of connectivity sufficient to compute the sensorimotor transformation underlying C. elegans chemotaxis, a simple form of spatial orientation...