Due to the increasing demand for Internet of Things (IoT) applications with sensitive data, use encryption on constrained devices is crucial protecting and ensuring privacy security. The used in such have limited computational power, memory, energy resources, making them vulnerable attacks that exploit these limitations. Lightweight cryptography has been growing fast recent years aiming circumv...

In this work, we quantify common tonal and phonetic errors made by second language learners of Mandarin Chinese. Pronunciation patterns of 300 native speakers of European languages are analyzed. Tonal errors (30.56%) are found to be more prevalent than phonetic ones (8.71%). Common errors include overemphasis of Tone 3 and inadequate aspiration of affricate consonants. Decision tree clustering ...

Graphene oxide (GO), which is an oxidized form of graphene, has a mixed structure consisting of graphitic crystallites of sp(2) hybridized carbon and amorphous regions. In this work, we present a straightforward route for preparing graphene-based quantum dots (GQDs) by extraction of the crystallites from the amorphous matrix of the GO sheets. GQDs with controlled functionality are readily prepa...

This paper reports a novel, low-cost, moderately sensitive, meso-scale accelerometer fabricated with spring steel foil and equipped with either a Hall Effect-based proximity sensor or a capacitive sensor. Since the sensitivity of a Hall Effect sensor is low, we attach a displacement-amplifying compliant mechanism (DaCM) to the proof-mass of the accelerometer to increase the overall sensitivity ...

Artificial reefs have proven to be an optimal and effective solution in stabilizing coastlines around the world. They are submerged structures that imitate protection service provided by natural accomplishing functions of dissipating wave energy protecting beach morphology, but also being ecological solution. In this paper, 2D small-scale experiments were performed analyze hydrodynamic, morphol...