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Calibrating consists in predicting Y, a quantitative variable of interest, using P explaining variables. PLSR-projection to latent structures regression (Wold et al., 1984) is the most popular method, very powerfull when a calibration dataset is available. Other methods don't need a calibration dataset, they are called direct calibrations. Two of them have been proposed previously: DC-direct calibration...
This study focuses on the calibration of a statistical model of discrimination between different stages of a fungal disease attack on oil palm, based on field hyperspectral measurements at the canopy scale. Combinations of preprocessing, partial least square regression and factorial discriminant analysis are tested on a hundred of samples to prove the efficiency of canopy reflectance to provide information...
In optically powered networks, glass fibres are used for transmitting optical communication signals as well as optical energy for electrically powered devices. Advantages over existing power delivery technologies are: immunity to electromagnetic interference, spark-free power for safety-critical applications, slim cables, simple installation and reduced maintenance cost. Applications relate to security...
Structural testing is widely used in industrial verification processes of critical software. This report presents PathCrawler, a structural test generation tool that may be used to automate this activity, and several evaluation criteria of automatic test generation tools for C programs. These criteria correspond to the issues identified during our ongoing experience in the development of PathCrawler...
Under certain conditions, the worst-case execution time (WCET) of a function can be found by measuring the effective execution time for each feasible execution path. Automatic generation of test inputs can help make this approach more feasible. To reduce the number of tests, we define two partial orders on the execution paths of the program under test. Under further conditions, these partial orders...
An optically powered camera sensor link is demonstrated. Power and data are transmitted over a 62.5-??m multimode glass fiber. Uncompressed video with 640 ?? 480 pixels resolution is streamed continuously at 100 Mb/s as soon as the fiber is illuminated with sufficient optical power. No energy has to be stored at the sensor location in batteries with limited capacities and lifetimes. Inexpensive fiber...
This paper deals with the design and realisation of a Near Infra-Red (NIR) micro-spectrometer (1.5 to 2 mum) for non invasive detection. The device is based on an InGaAs strained QWs photodiode integrated in a MOEMS structure for wavelength tunability. We address two main challenges which are the realisation of a long wavelength photodetector combined with the fabrication of a micro-machined tunable...
The paper considers the design of experiments for linear models with misspecification, of the form t(x) = Sigmai = 1p thetasiPhii(x) + r(x), where r(x) is an unknown deviation from the regression model. Considering a modeling of this misspecification, the goal is to obtain robust designs which minimize the integral quadratic risk. A kernel-based representation (Gaussian process) is chosen to model...
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