Autonomous liquid-volume monitoring is crucial in ubiquitous healthcare. However, conventional approach is based on either human visual observation or expensive detectors, which are costly for future pervasive monitoring. Here we introduce a novel approach based on passive harmonic transponder antenna sensor and frequency hopping spread spectrum (FHSS) pattern analysis, to provide a very low co...

This paper investigates the coincidence between six interest point detection methods (SIFT, MSER, Harris-Laplace, SURF, FAST & Kadir-Brady Saliency) with two robust “bottom-up” models of visual saliency (Itti and Harel) as well as “task” salient surfaces derived from observer eye-tracking data. Comprehensive statistics for all detectors vs. saliency models are presented in the presence and abse...

Some new passive and active methods for reducing the effects of seismic disturbances on suspended masses are described, with special reference to gravitational radiation detectors in which differential horizontal motions of two or more suspended test masses are monitored. In these methods it is important to be able to determine horizontal seismic accelerations independent of tilts of the ground...

Available online 12 November 2009

High sensitivity and efficient X-ray detectors are needed to promote boost their application as tools in medical diagnostics radiotherapy. Lead halide perovskites have emerged recently a novel class of material for detection. Although 3D possess very interesting optoelectronic properties they suffer from low environmental operational stability. Here strategy based on using starch polymeric temp...

A new instrument was developed to measure radon exposure with the use of passive monitors like nuclear track etch detectors. It is based on a device to be switched on and off to permit accurate measurements of timed exposures. The detector arrangement consists of a small cylindrical chamber, a mobile piston inside, a filter holder, a detector holder. The internal sampling volume is variable. Th...

Short term sampling methods for Rn analyses have been considered by many to be unreliable for use in real estate transactions. This opinion has been based upon the recognized tact that Rn may vary with fairly short time periods and that some of these variations may be quite large. However, many of the published data regarding variation of concentration were not taken within the complete confine...

Alborz observatory is an EAS array in the heights of Alborez mountain chain near Tehran. For the development of the array, more number of detectors is inevitable. The managing the financial resources and achieving the highest efficiency of the array is important for the project. Therefore, Water Cherenkov Detectors has been used for 9 months in the same way as the previous experiment with Scint...

Recent advances in CMOS imaging sensor technology, e.g. pixel sensors, have proven that the process is radiation tolerant enough to cope with certain levels required for tracking layers hadron collider experiments. With ever-increasing area covered by silicon detectors cost effective alternatives current sensors and more integrated designs are desirable. This article describes results obtained ...