In support for the ISO Mission it has been necessary to establish a set of asteroids as photometric standards for the photometric calibration of the instruments (M uller & Lagerros 1998). The new standards are described as rotating ellipsoids. Illumination geometry, heat transfer due to non-zero thermal inertia and surface structure/porosity are taken into account. The characteristic properties...

A time resolved measurement of the thermaly induced surface deformation has been carried out using visible light-based photothermal deflection technique. Thermal conductivity coefficients were determined for several semiconductor materials. Problems of the experimental data interpretation with respect to the effect of 2D/3D heat source excitation and the potential advantages of the time resolve...

Usually when determining parameters with an inverse method, it is assumed that parameters or properties, other than those being sought, are known exactly. When such known parameters are uncertain, the inverse solution can be very sensitive to the degree of uncertainty. The stochastic regularization method can be modi ed to reduce this sensitivity. This paper presents such a modi cation. In addi...

We present in this paper a real world application for the elicitation of decision parameters used in the evaluation of thermal comfort in high speed trains. The model representing the thermal comfort is a hierarchical one and we propose to use different aggregation methods for different levels of the model. The methods used are rule-based aggregation, Electre Tri and 2-additive Choquet. We show...

The factors contributing to the thermal stability of proteins from thermophilic origins are matters of intense debate and investigation. Thermophilic proteins are thought to possess better packed interiors than their mesophilic counterparts, leading to lesser overall flexibility and a corresponding reduction in surface-to-volume ratio. These observations prompted an analysis of B values reporte...

Nowadays, efforts are being made to estimate the thermal comfort in vehicles by measuring each environmental parameter air temperature, air humidity, mean radiant temperature, air velocity, human activity and clothing insulation. An optimum level of comfort in the vehicle is obtained only by using an automatic air conditioning and climate control system. The paper focuses on the analysis of the...

This paper reports on the behavior of electron field emission from diamond thin films at elevated temperatures. The study is motivated by the possibility of using these structures in high temperature electronics or direct energy conversion processes. Three diamond samples were tested: nanocrystalline diamond, crowned diamond tips, and peaked diamond tips. All samples displayed moderately effici...

Nanocrystalline ZnO particles were prepared by a novel sonochemical route from zinc acetate and sodium hydroxide without any requirement of calcination steps at high temperature and without surfactants. Variations in several parameters and their effects on the structural (crystal size and morphology) properties of nanoparticles were investigated. Characterizations were carried out by X-Ray ...

As excitation factors of heating time and power directly affect the behaviour of eddy current and thermal propagation for eddy current pulsed thermography (ECPT), it is necessary to investigate the optimal parameters to maximize contrast between the defective and non-defective area as well as quantitative evaluation. The defect evaluation on complex geometry in the structural especially edges r...