Review of camouflage assessment techniques

In military operations signature reduction techniques such as camouflage nets, low-emissive paints, and camouflage patterns are typically deployed to optimize the survivability of high value assets by minimizing their detectability. Various methods have been developed to assess the effectiveness of these camouflage measures. There are three main...

Review of camouflage assessment techniques: paper

In military operations signature reduction techniques such as camouflage nets, low-emissive paints, and camouflage patterns are typically deployed to optimize the survivability of high value assets by minimizing their detectability. Various methods have been developed to assess the effectiveness of these camouflage measures. There are three main...

Review of camouflage assessment techniques: presentation

Focal-plane wavefront sensing with high-order adaptive optics systems

We investigate methods to calibrate the non-common path aberrations at an adaptive optics system having a wavefront-correcting device working with an extremely high resolution (larger than 150x150 correcting elements). We use focal-plane images collected successively, the corresponding phase-diversity information and numerically efficient...

GPR monitoring of oil displacement - A laboratory study

In this paper we present laboratory experiments where we address the Ground Penetrating Radar (GPR) capability of monitoring oil displacement processes in porous media. This has significant applications in near-subsurface environments where remediation of contaminant such as oil-derived liquids is considered one of the major technical,...

Computer modeling and laboratory experiments of a specific borehole to surface electrical monitoring technique (BSEMT)

Geophysical monitoring of the dynamical behavior of subsurface reservoirs (oil, gas, CO2) remains an important issue in geophysical research. A new idea for reservoir monitoring based on electrical resistivity tomography was developed at TNO. The essential element of the so-called BSEMT (Borehole to Surface Electrical Monitoring Technique)...

On the relevance of nonacoustic factors influencing the annoyance caused by environmental sounds - A literature study

The annoyance caused by environmental sounds is only in part related to the noise dose. Nonacoustic factors have systematic effects on annoyance also. In the present literature study we explored what nonacoustic factors may be considered as potential tools to reduce the annoyance. Studies designed to test the effect of the nonacoustic factors in...

Numerical modelling of the mechanical and fluid flow properties of fault zones - Implications for fault seal analysis

Existing fault seal algorithms are based on fault zone composition and fault slip (e.g., shale gouge ratio), or on fault orientations within the contemporary stress field (e.g., slip tendency). In this study, we aim to develop improved fault seal algorithms that account for differences in fault zone composition as well as deformation conditions...

Strain development in unconfined coals exposed to CO2, CH4 and Ar: Effect of moisture

Field experiments and laboratory studies have shown that swelling of coal takes place upon contact with carbon dioxide at underground pressure and temperature conditions. Understanding this swelling behavior is crucial for predicting the performance of future carbon dioxide sequestration operations in unminable coal seams conducted in...

Internal wave focusing revisited; a reanalysis and new theoretical links

An experiment which discussed the appearance of an internal wave attractor in a uniformly stratified, free-surface fluid [Maas, L.R.M., Benielli, D., Sommeria, J., Lam, F.-P.A., 1997. Observation of an internal wave attractor in a confined, stably stratified fluid. Nature 388(6642), 557–561] is revisited. This is done in order to give a more...

SuperAssist: A User-Assistant Collaborative Environment for the supervision of medical instrument use at home

With the rise of Transmural care, patients increasingly use medical instruments at home. Maintenance and troubleshooting greatly determines the safety and accuracy of these instruments. For the supervision of these complex tasks, we developed a User-Assistant Collaborative Environment (U-ACE). We designed three types of personal virtual...

Laboratory experience with the IR-TRACC chest deflection transducer

In 1998, Rouhana et al. described development of a new device, called the IR-TRACC (InfraRed - Telescoping Rod for Asessment of Chest Compression). Tests have been performed with IR-TRACC units at various labs around the world since 1998. A first-generation was retrofit into a Q3 dummy at TNO. Similarly, a mid sized male Hybrid III dummy thorax...