This paper presents the development of a novel contactless omnidirectional capacitive proximity sensor. The presented device has been designed to be energy-efficient (≈5 mW power consumption) by means duty-cycling supply. A comprehensive methodological experiment carried out extensively evaluate performance within sensing range (5–10 cm). simple boot-up self-adjustment mechanism implemented usi...

A private proximity retrieval ( xmlns:xlink="http://www.w3.org/1999/xlink">PPR ) scheme is a protocol which allows user to retrieve the identities of all records in database that are within some distance ...

Proximity scaling methods such as multidimensional represent objects in a low-dimensional configuration so that fitted object distances optimally approximate proximities. Besides finding the optimal configuration, an additional goal may be to make statements about cluster arrangement of objects. This fails if lacks appreciable clusteredness. We present optimized proximity (COPS), which attempts...