This report describes the first stage in solving the structure from motion problem, which is to detect feature points and track them from frame to frame. A number of detectors from the literature, as well as some specially developed detectors, are assessed using a fly-over sequence of Parafield control tower. It is found by this measure that the Harris detector is the best of the conventional d...

A network of three radon stations has been established in the Langadas Basin, northern Greece for radon monitoring by various techniques in earthquake prediction studies. Specially made devices with plastic tubes including Alpha Track-etch Detectors (ATD) were installed for registering alpha particles from radon and radon decay products exhaled from the ground, every 2 weeks, by using LR-115, t...

Introduction: Protein-protein interaction is one of the most important subjects in molecular biology [1]. Bioassays have been developed to detect and quantify the biomolecular interactions with high sensitivity. There are two general categories of techniques: labelling with compounds and direct molecule identification. Label-free biosensor technologies are among the latter, which are desirable ...

Solid State Nuclear Track Detectors (SSNTD) have been used as passive dosimeters for many decades. Fast neutron detection is performed by detecting recoil protons generated in a hydrogenous material (neutron converter). The dose estimated multiplying the track-spots density present on detector surface calibration coefficient obtained from reference irradiations. Therefore, one needs to automati...

Extensive export quality reserves of granite, dolerite and marbles which are used for interior decorations as wall facing, paving floors, kitchen counter tops, etc., are available in Azad Kashmir. Since these stones contain radium in trace amounts, therefore, its use as a building material may be a potential source of indoor radon. In order to assess health hazards due to the use of these stone...

The FT (peak bolometric photon flux) vs. Ep (peak energy) plane is a powerful tool to compare the burst populations detected by different detectors. Detector sensitivity curves in this plane demonstrate which burst populations the detectors will detect. For example, future CZT-based detectors will show the largest increase in sensitivity for soft bursts, and will be particularly wellsuited to s...

A minimally perturbing plastic scintillation detector has been developed for the dosimetry of high-energy beams in radiotherapy. The detector system consists of two identical parallel sets of radiation-resistant optical fibre bundles, each connected to independent photomultiplier tubes (PMTs). One fibre bundle is connected to a miniature water equivalent plastic scintillator and so scintillatio...

We present an algorithm to fit 3D straight tracks in a set-up of pixel/strip detectors in zero or negligible magnetic field. The fitting method is iterative and it allows for the arbitrary orientation of detectors. The fit algorithm is used for detector position calibration and track reconstruction in the Helsinki Silicon Beam Telescope.