Long-term observations of vegetation phenology can be used to monitor the response of terrestrial ecosystems to climate change. Satellite remote sensing provides the most efficient means to observe phenological events through time series analysis of vegetation indices such as the Normalized Difference Vegetation Index (NDVI). This study investigates the potential of a Photochemical Reflectance ...

This paper describes a new representation for the solutions of the resource-constrained project scheduling problem (RCPSP) denoted Activity Set List. The most efficient heuristics for the problem use the activity list representation and the serial SGS method to construct the corresponding solution (schedule). The activity list may induce a search space of representations much larger then the sp...

Introduction It is a difficult task for walking robots in unknown environments to maintain a safe system behaviour, in particular for walking robots with less than 6 legs on ground with different soil properties. To encounter the drawbacks [ID,KO] of mechanical approaches maintaining the problem of postural control, we propose a new biomechanical approach. The approach addresses difficult probl...

There are too many theories of causation to get into the focus of a small paper. But there are two in which I have a natural interest since they look almost the same: namely the theory of Clark Glymour, Peter Spirtes, and Richard Scheines, so vigorously developed since 19831 and most richly stated in Spirtes et al. (1993) (whence I shall refer to it as the SGS theory), and my own theory, publis...

We present spectral graph skeletons (SGS), a novel graphbased method for action recognition from depth cameras. The contribution of this paper is to leverage a spectral graph wavelet transform (SGWT) for creating an overcomplete representation of an action signal lying on a 3D skeleton graph. The resulting SGS descriptor is efficiently computable in time linear in the action sequence length. We...

The SGS risk management process is implemented in full compliance with international standards e. g. ISO 31000, as a minimum requirement. The SGS team is committed to improving the delivery of risk management in terms of statistical processes, facilitated workshops for identification and assessment, development of better graphical communications of risk, more calibrated assessments, off-setting...

We consider the job-shop problem with sequence-dependent setup times. We focus on the formal definition of schedule generation schemes (SGSs) based on the semi-active, active, and non-delay schedule categories. We study dominance properties of the sets of schedules obtainable with each SGS. We show how the proposed SGSs can be used within single-pass and multi-pass priority rule based heuristic...

We present new algorithms for permutation group manipulation. Our methods result in an improvement of nearly an order of magnitude in the worst-case analysis for the fundamental problems of finding strong generating sets and testing membership. The normal structure of the group is brought into play even for such elementary issues. An essential element is the recognition of large alternating com...