In Suriname, the Maroons have practiced shifting cultivation for generations, but now the increasing influence of modern society is causing a trend of decreasing fallow periods with potentially adverse effects for the vulnerable tropical soils. Adoption of appropriate soil fertility management (SFM) practices is currently slow. Combining methods from cultural ecology and environmental psycholog...

We analyze the mechanisms of contrast formation in noncontact SFM imaging of ionic surfaces and calculate constant frequency shift scanlines of the perfect surfaces of NaCl, MgO, and LiF. The noncontact scanning force microscopy ~SFM! operation is modeled by a perturbed oscillator using atomistic static and moleculardynamics techniques for the force-field calculations. The electrostatic potenti...

We perform scanning tunnelling microscopy (STM) in a regime where primary electrons are field-emitted from the tip and excite secondary electrons out of the target-the scanning field-emission microscopy regime (SFM). In the SFM mode, a secondary-electron contrast as high as 30% is observed when imaging a monoatomic step between a clean W(110)- and an Fe-covered W(110)-terrace. This is a figure ...

We propose an instant reconstruction of 3D surface meshes for a set of images and their camera poses and sparse 3D points computed by structure from motion (SfM). We aim at the proposed method to be compatible with an incremental structure from motion system as it can immediately generate the 3D surface model seen from the latest view point recovered by SfM. The proposed method consists of four...

Abstract. Several factorization techniques have been proposed for tackling the Structure from Motion problem. Most of them provide a good solution, while the amount of missing and noisy data is within an acceptable ratio. Focussing on this problem, we propose to use an incremenal multiresolution scheme, with classical factorization techniques. Information recovered following a coarse-to-fine st...

I review current approaches to structure from motion (SFM) and suggest a framework for designing new algorithms. The discussion focuses on reconstruction rather than on correspondence and on algorithms reconstructing from many images. I argue that it is important to base experiments and algorithm design on theoretical analyses of algorithm behavior and on an understanding of the intrinsic, algo...

TheSocialForce Model (SFM) successfully reproduces many collective phenomena in evacuations or dense crowds. However, pedestrians behaviour is context dependent and the SFM has some limitations when simulating crowds an open environment under normal conditions. Specifically, urban public square tend to expand their personal space try avoid areas reduce risk of collision. Based on SFM, proposed ...

Since its inception in 1985, the atomic force microscope’ [also known as the scanning force microscope (SFM)] has held great promise for imaging nonconducting samples with subnanometer resolution. Early attempts to image relatively inelastic samples such as graphite, crystals of ionic salts, and semiconductors yielded atomic resolution data. These data provided reason to believe that SFM might ...

Salicylic acid-Formaldehyde-m-Cresol (SFM) terpolymer had been synthesized in DMF media by conventional method. The resulting resin had been characterized by FTIR spectra, elemental and thermogravimetric analyses. The morphology of SFM resin had been studied by SEM and Optical photograph. Various parameters like rate of equilibration, effect of pH on ion exchange capacity and effect of conc...