Even though Ziegler catalysts have been known for almost half a century, rare earth metals (Ln), particularly neodymium (Nd)-based Ziegler catalyst systems, only came into the focus of industrial and academic research well afterthelargescaleapplicationoftitanium, cobaltandnickelcatalystsystems. Asadirectconsequenceofthelaterecognitionofthetechnologicalpotentialof rareearthmetalZieglercatalysts, thesesystemshaveattractedmuchattention. Considerable progress has been made in this ?eld as a result of intensive workperformed during the last fewyears. Worthmentioning is thestructural identi?cation...

With contributions by numerous experts

Data fusion, the ability to combine data derived from several sources to provide a coherent, informative, and useful characterization of a situation, is a challenging task. There is no unified and proven solution which is applicable in all circumstances, but there are many plausible and useful approaches which can be and are used to solve particular applications. This volume presents the proceedings of the workshop Data Fusion Applications hosted in Brussels by the 1992 ESPRIT Conference and Exhibition. It contains 22 papers from 69 experts, who present advanced research results on data...

1. Facts: A leisure term with an unbounded value function, when added to utility in the Lucas (1988) 'mechanics of economic development', expands enormously the range of data covered by the theory. To explain this we have to ask two questions. First: why leisure would be so much desired? Perhaps because leisure is one's own time and such a leisure term means an unbounded value of individual freedom. But why leisure is economically productive, as implied by the results obtained in this study? Perhaps because cognitive innovations often occur during the time which in economics is registered as...

Covers such topics as: Microgels by Precipitation Polymerization: Synthesis, Characterization, and Functionalization; Hydrogels in Miniemulsions; Nano- and Microgels Through Addition Reactions of Functional Oligomers and Polymers; Synthesis of Microgels by Radiation Methods; and, Microgels as Nanoreactors: Applications in Catalysis.

'High Solid Dispersions' covers various topics in the field, including engineering the dynamic properties of hairy particles, nonlinear rheological properties of dense colloidal dispersions close to a glass transition under steady shear and the micromechanics of soft particle glasses.