The use of Pseudoinvariant Areas (PIA) makes it possible to carry out a reasonably robust and automatic radiometric correction for long time series of remote sensing imagery, as shown in previous studies for large data sets of Landsat MSS, TM, and ETM+ imagery. In addition, they can be employed to obtain more coherence among remote sensing data from different sensors. The present work validates...

This research study showed the potential of block bundle adjustment with nadir viewing sensor images, such as Landsat 7 ETM . The method is based on the 3D analytical geometric model developed for multisensor images at the Canada Centre for Remote Sensing, Natural Resources Canada. Different block sizes and configurations were tested and compared using an image bundle adjustment. The different ...

The Earth Observation for Sustainable Development of Canada’s forests (EOSD) project monitors Canada's forests from space. Canada contains ten-percent of the world’s forests. Initial EOSD products are land cover, forest change, forest biomass, and automated methods. There are more than 500 LANDSAT TM or ETM+ scenes required for a single coverage of Canada’s forests. Multi-temporal analysis usin...

Two simple methods are described for the determination of ethionamide (ETM) in bulk drug and tablets using cerium (IV) sulphate as the oxidimetric agent. In both methods, the sample solution is treated with a measured excess of cerium (IV) solution in H2SO4 medium, and after a fixed standing time, the residual oxidant is determined either by back titration with standard iron (II) solution to a ...

The structure-activity relationships (SAR) are investigated by means of the Electronic-Topological Method (ETM) followed by the Neural Networks application (ETM-NN) for a class of anti-cholinesterase inhibitors (AChE, 53 molecules) being pyridazine derivatives. AChE activities of the series were measured in IC(50) units, and relative to the activity levels, the series was partitioned into class...

El presente reporte de investigación, presenta un recorte la tesis maestría del primer autor;tiene como objetivo analizar el trabajo matemático estudiantes carreras humanidades cuando resuelven una tarea sobre función exponencial. Para ello, nos fundamentamos en teoría Espacio Trabajo Matemático (ETM) y tomamos método ETM para análisis. La investigación se realizó con ciclo (16 18 años) univers...

Considering the external disturbances, in this paper, quasi-consensus of multiagent systems is studied via event-triggered impulsive control. By designing a novel mechanism (ETM), sufficient conditions to realize leader-following are derived with Additionally, Zeno behavior also excluded. It shown that frequency closely related parameters selected designed ETM, and less conservative results can...

Remote sensing is a key technology that enables us to scale up our empirical, in situ measurements of carbon uptake made at the site level. In low leaf area index ecosystems typical of semi-arid regions however, many assumptions of these remote sensing approaches fall short, given the complexities of the heterogeneous landscape and frequent disturbance. Here, we investigated the utility of remo...

The reflectance of the Earth's surface is significantly influenced by atmospheric conditions such as water vapor content and aerosols. Particularly, the absorption and scattering effects become stronger when the target features are non-bright objects, such as in aqueous or vegetated areas. For any remote-sensing approach, atmospheric correction is thus required to minimize those effects and to ...