Nitrogen fixed by legumes is the main nitrogen source in organic farming systems. The design of crop rotation is strongly depending on the knowledge of how much nitrogen is fixed by legumes. Also for farm scale budgeting of Nitrogen it is essential to know the amount of Nitrogen fixed by the single leguminous crop. According to the literature, the determination of Nitrogen fixation is expensive...

Rhododendron aureum Georgi is a perennial evergreen dwarf shrub that grows at all elevations within the alpine tundra of northern China. Previous research has investigated the plant communities of R. aureum; however, little information is available regarding interspecific competition and underground soil microbial community composition. The objective of our study was to determine whether the pr...

This study uses a door-to-door fund-raising field experiment to explore the returns to physical appearance on fund-raising success. Interestingly, blonde females earn more on average than brunette counterparts. However, the returns to physical appearance depend critically on the race of a potential donor. © 2008 Elsevier B.V. All rights reserved.

A complement (C)-dependent antiglobulin assay was utilized to determine the reactivity of non-C-fixing monoclonal antibodies (MoAb) with human granulocyte-macrophage progenitor cells (CFU-GM). The variables of the assay were analyzed with non-C-fixing MoAb against Ia antigens, including CR11-462, which recognizes the same (or spatially close) determinant identified by the C-fixing anti-Ia MoAb ...

L. Fejes Tóth [1] introduced the notion of fixing system for a compact, convex body M ⊂ Rn. Such a system F ⊂ bd M stabilizes M with respect to translations. In particular, every minimal fixing system F is primitive, i.e., no proper subset of F is a fixing system. In [2] lower and upper bounds for cardinalities of mimimal fixing systems are indicated. Here we give an improved lower bound and sh...

This article addresses the issue of expressive face modelling using an active appearance model for facial expression recognition and synthesis. We consider the six universal emotional categories namely joy, anger, fear, disgust, sadness and surprise. After a description of the active appearance model (computed with 3 or only one PCA), we address the active appearance model contribution to autom...