Coral walls protect vegetation gardens from strong winds that sweep across Xiji Island, Taiwan Strait for half the year. Topographic parameters based on light detection and ranging (LiDAR)-based high-resolution digital elevation model (DEM) provide obvious correspondence with the expected form of landscape features. The information on slope, curvature, and openness can help identify the locatio...

Topographic attributes (TAs) play an important role in quantitatively describing the characteristics of landform and its structure. At present, TAs are classified from different views by many scientists being from various fields. However, there are still some urgent problems that need to be clarified about TAs. The relationships and differences of various TAs are not revealed and a mature, wide...

THEMES : formes différentielles, champs de vecteurs, coordonnées complexes z et z, lemme de Poincaré, formule de Green-Riemann. Sources : Amar-Matheron [Analyse complexe] (Cassini), Berenstein-Gay [Complex variables] (GTM 125, Springer), Hénaut-Yger [Éléments de Géométrie] (Ellipses), Yger [Analyse complexe et distributions](Ellipses), Marco & al [Mathématiques L2] (Pearson Education). NOTA. Le...

By means of local neighborhood regression and time windows, the generative topographic mapping (GTM) allows to predict and visually inspect time series data. GTM itself, however, is fully unsupervised. In this contribution, we propose an extension of relevance learning to time series regression with GTM. This way, the metric automatically adapts according to the relevant time lags resulting in ...

Dimensionality reduction is required to produce visualizations of high dimensional data. In this framework, one of the most straightforward approaches to visualising high dimensional data is based on reducing complexity and applying linear projections while tumbling the projection axes in a defined sequence which generates a Grand Tour of the data. We propose using smooth nonlinear topographic ...

After the 2008 economic slowdown, and with increasing assault from enterprises from emerging economies, many innovative strategic leaders of multinational enterprises are forced to radically transform their enterprises. They often choose to change from low-cost strategy to innovation-driven product differentiation strategy. In this study, we use a multi-level Grounded Theory Methodology (GTM) a...

Harmonic Analysis [59] N. Bourbaki. Théories spectrales, Chapitres 1 et 2. Éléments de Mathématique,Réimpression inchangée de l’édition originale de 1967, Springer-Verlag, 2007[60] G. B. Folland. A Course in Abstract Harmonic Analysis. CRC Press, 1995[61] L. H. Loomis. An Introduction to Abstract Harmonic Analysis. van Nostrand,1953[62] M. A. Năımark. Normed Algebras. Third ...

The information systems (IS) research community is characterized by a large diversity of research approaches and topics. Although empirical quantitative research approaches dominate (Orlikowski et al. 1991), new research strategies are on the rise. Two research strategies that have received increasing scholarly attention recently are design science research (DSR) and the grounded theory method ...

We compare a number of different object layout algorithms. Figure 1, 2, and 4 depict the results obtained by laying out 320 image objects into a 2D grid with Kernelized Sorting (our method), Self Organizing Map http://www.cis.hut.fi/projects/somtoolbox/, and Generative Topographic Mapping (GTM) http://www.ncrg.aston.ac.uk/GTM/. Figure 3 and 5 show the corresponding cluster members of SOM and GTM.

The purpose of this article is to classify and compare – in essence to model – a number of different types of modelling methods employed within Operations Research and the Management Sciences (OR/MS). The classification of these methods is based on a selected number of generally recognised modelling properties. On the basis of this meta-model, requirements for the successful application of diff...