acetylneuraminic acid hydrolase the kidney cortex homogenate was subjected to differential centrifugation (see Table 1). Each subcellular fraction obtained was washed twice by repeated centrifugation and the pooled supernatants were then subjected to the next centrifugation step. In this way the homogenate was separated into five particulate fractions and one soluble fraction. The subcellular f...

Frans van Winden presents a quick introduction to the dynamic ‘dual process’ model of social ties, which was developed by van Winden and colleagues in various publications during the last 20 years. Drawing on evidence from economics and psychology, van Winden argues that preferences are determined by different mixtures of emotional/subcortical and cognitive/neocortical brain activity, with the ...

SimSum (Slmulatxon of Summarizing) simulates 20 real-world worlang steps of expert summarizers It presents an empmcally founded cogmUve model of summarizing that operaUonahzes the discourse processing model developed by van Dijk and Kmtsch (1983) The observed strate.gles of expert summarizers have g~ven nse to cooperating object-onented agents commumcatlng through dedicated blackboards Each age...

A theory of understanding (parsing) texts as a process of collecting simple textual propositions into thematically and causally related units is described, based on the concept of macrostructures as proposed by Kintsch and van Dijk. These macrostructures are organized into tree hierarchies, and their interrelationships are described in rule-based story grammars related to the Kowalski logic bas...

We describe two improvements to Gentry's fully homomorphic scheme based on ideal lattices and its analysis: we provide a more aggressive analysis of one of the hardness assumptions (the one related to the Sparse Subset Sum Problem) and we introduce a probabilistic decryption algorithm that can be implemented with an algebraic circuit of low multiplicative degree. Combined together, these improv...

The relationship between ammonia emissions from a poultry farm and soil NO and N2O fluxes from a downwind source U. Skiba, J. Dick, R. Storeton-West, S. Fernades-Lopez, C. Wood, S. Tang, and N. van Dijk Centre for Ecology and Hydrology (CEH) Edinburgh, Bush Estate, Penicuik, Midlothian EH26 0QB, UK Dpto. Quı́mica y Análisis Agŕıcola-E.T.S.I. Agrónomos de Madrid, Ciudad Universitaria s/n, 28040 M...

Peter D. Dijkstra, Sander van Dijk, Ton G.G. Groothuis, Michele E.R. Pierotti, and Ole Seehausen Division of Ecology and Evolutionary Biology, Graham Kerr Building, Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK, Behavioural Biology Research Group, University of Groningen, P.O. Box 14, 9750 AA Haren, The Netherlands, Institute of Ecology and Evolution, Divis...

X. F. Miao, L. Caron, Z. Gercsi, A. Daoud-Aladine, N. H. van Dijk, and E. Br€ uck Fundamental Aspects of Materials and Energy, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands Max Planck Institute for Chemical Physics of Solids, N€ othnitzer Strabe 40, D-01187 Dresden, Germany Blackett Laboratory, Department of Physics, Imperial College Lo...

Kintsch and van Dijk proposed a model of human comprehension and summarisation which is based on the idea of processing propositions on a sentence-bysentence basis, detecting argument overlap, and creating a summary on the basis of the best connected propositions. We present an implementation of that model, which gets around the problem of identifying concepts in text by applying coreference re...