MARS: a mouse atlas registration system based on a planar x-ray projector and an optical camera

The X-ray screening systems operators’ professional training is based on the CBT (computer-based training) principle, which has algorithms of adaptive training. These algorithms in existing computer simulators include feedback mechanisms on the basis of trainability exponents – such as the frequency of detecting dangerous objects, the frequency of false alarms and detection time. Further enhancement of the operators’ simulator training effectiveness is associated with the integration of psychophysiological mechanisms providing monitoring of their functional state. Based on the analysis of the particularities of x-ray screening systems operators’ professional training associated with the formation of competences in dangerous objects visual search, the most perspective method is the Eye tracking technology. Domestic and foreign studies of the eye movements characteristics while solving professional tasks in training process are actively developed in various areas. There are no studies of visual search peculiarities in domestic practice in contrast to exterior studies. This research is aimed at considering the usage of Eye tracking technology in the training of x-ray screening systems operators. As the result of the experimental research with the use of mobile eye-tracker Sensomotoric Instruments Eye Tracking Glasses 2.0 the statistical data of eye movement parameters of two groups of subjects with different levels of training have been received. The application of cluster and discriminant analyses methods allowed to identify General classes of these parameters, as well as to obtain the discriminants functions for each group under examination. The theoretical significance of the peculiarities of the operators’ eye movement studies is to identify the patterns of prohibited items visual search. The practical importance of implementation of Eye tracking technology and statistical analysis methods is to increase the reliability of assessment the level of formed competence of x-ray screening systems’ operators in visual search, as well as to develop the potential system of operators’ state monitoring and assessing their visual fatigue.

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Gene Expression Data to Mouse Atlas Registration Using a Nonlinear Elasticity Smoother and Landmark Points Constraints

Journal of Scientific Computing ◽

10.1007/s10915-011-9563-6 ◽

2011 ◽

Vol 50 (3) ◽

pp. 586-609 ◽

Cited By ~ 13

Author(s):

Tungyou Lin ◽

Carole Le Guyader ◽

Ivo Dinov ◽

Paul Thompson ◽

Arthur Toga ◽

...

Keyword(s):

Gene Expression ◽

Nonlinear Elasticity ◽

Gene Expression Data ◽

Expression Data ◽

Atlas Registration ◽

Mouse Atlas

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Gene to mouse atlas registration using a landmark-based nonlinear elasticity smoother

10.1117/12.812491 ◽

2009 ◽

Cited By ~ 2

Author(s):

Tungyou Lin ◽

Carole Le Guyader ◽

Erh-Fang Lee ◽

Ivo D. Dinov ◽

Paul M. Thompson ◽

...

Keyword(s):

Nonlinear Elasticity ◽

Atlas Registration ◽

Mouse Atlas

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Detection of Nonthermal Optical Flashes with 10−3-10−1 s Duration from Some LMXBs

International Astronomical Union Colloquium ◽

10.1017/s0252921100035302 ◽

1995 ◽

Vol 151 ◽

pp. 330-333

Author(s):

G.M. Beskin ◽

S.I. Neizvestny ◽

S.N. Mitronova ◽

V.L. Plokhotnichenko ◽

M. Yu. Popova ◽

...

Keyword(s):

Binary Systems ◽

High Energy ◽

Compact Objects ◽

Registration System ◽

X Ray ◽

Multichannel Analysis ◽

Astrophysical Objects ◽

Very High Energy ◽

Nonthermal Radio Emission ◽

Optical Flashes

In order to study very rapid optical variability of astrophysical objects on time scales between 10−7 s and 102 s (Shvartsman 1977), at SAO the MANIA (Multichannel Analysis of Nanosecond Intensity Alterations) experiment is being used. A special photometric registration system and software has been developed (Beskin et al. 1982’ Plokhotnichenko 1983, Zhuravkov et al. 1994).One of the applications of these tools is the detection of radiation from accreted or ejected plasma near compact objects. A choice between two models of accretion onto compact objects in binary systems - hydrodynamic flow or magnetc flaring (Shakura & Sunyaev 1973, Pustil’nik & Shvartsman 1974) has not yet been made. Recent optical and X-ray observations of X-ray binaries provide information on their (fast) variability, their nonthermal radio emission, generation of very high energy particles, and nonthermal processes in rapid optical flares (Bartolini et al. 1994, Beskin et al. 1994). However, the data are not fully described by classical hydrodynamical models.

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A method of 2D/3D registration of a statistical mouse atlas with a planar X-ray projection and an optical photo

Medical Image Analysis ◽

10.1016/j.media.2013.02.009 ◽

2013 ◽

Vol 17 (4) ◽

pp. 401-416 ◽

Cited By ~ 9

Author(s):

Hongkai Wang ◽

David B. Stout ◽

Arion F. Chatziioannou

Keyword(s):

3D Registration ◽

X Ray ◽

Mouse Atlas ◽

Ray Projection

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Space and Time Distribution of Hard X-Ray Emission in a Loop at the Beginning of a Flare

International Astronomical Union Colloquium ◽

10.1017/s0252921100025446 ◽

1994 ◽

Vol 144 ◽

pp. 275-277

Author(s):

M. Karlický ◽

J. C. Hénoux

Keyword(s):

Time Distribution ◽

Electron Bombardment ◽

Spatial Evolution ◽

Superthermal Electrons ◽

Flare Loop ◽

X Ray ◽

Superthermal Electron ◽

Flare Loops ◽

Chromospheric Evaporation ◽

Temporal And Spatial

AbstractUsing a new ID hybrid model of the electron bombardment in flare loops, we study not only the evolution of densities, plasma velocities and temperatures in the loop, but also the temporal and spatial evolution of hard X-ray emission. In the present paper a continuous bombardment by electrons isotropically accelerated at the top of flare loop with a power-law injection distribution function is considered. The computations include the effects of the return-current that reduces significantly the depth of the chromospheric layer which is evaporated. The present modelling is made with superthermal electron parameters corresponding to the classical resistivity regime for an input energy flux of superthermal electrons of 109erg cm−2s−1. It was found that due to the electron bombardment the two chromospheric evaporation waves are generated at both feet of the loop and they propagate up to the top, where they collide and cause temporary density and hard X-ray enhancements.

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Some Problems in Understanding the Solar Corona

International Astronomical Union Colloquium ◽

10.1017/s025292110002491x ◽

1994 ◽

Vol 144 ◽

pp. 1-9

Author(s):

A. H. Gabriel

Keyword(s):

Solar Corona ◽

Solar Atmosphere ◽

Theoretical Modelling ◽

Total System ◽

Major Advance ◽

X Ray ◽

Proper Perspective ◽

Space Observations

The development of the physics of the solar atmosphere during the last 50 years has been greatly influenced by the increasing capability of observations made from space. Access to images and spectra of the hotter plasma in the UV, XUV and X-ray regions provided a major advance over the few coronal forbidden lines seen in the visible and enabled the cooler chromospheric and photospheric plasma to be seen in its proper perspective, as part of a total system. In this way space observations have stimulated new and important advances, not only in space but also in ground-based observations and theoretical modelling, so that today we find a well-balanced harmony between the three techniques.

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