Dense-shell glycodendrimers: UV/Vis and electron paramagnetic resonance study of metal ion complexation BY DIETMAR APPELHANS1,∗, ULRICH OERTEL1, ROBERTO MAZZEO2, HARTMUT KOMBER1, JAN HOFFMANN3, STEFFEN WEIDNER4, BERNHARD BRUTSCHY3, BRIGITTE VOIT1 AND MARIA FRANCESCA OTTAVIANI2,∗ 1Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany 2Department of Geological Science...

We present a series of simple improvements that make use of temporal and spatial coherence in the scope of hierarchical visibility algorithms. The hierarchy updating avoids visibility tests of certain interior nodes of the hierarchy. The visibility propagation algorithm reuses information about visibility of neighbouring spatial regions. Finally, the conservative hierarchy updating avoids visib...

We describe a mechanism for theory interpretations in PVS. The mechanization makes it possible to show that one collection of theories is correctly interpreted by another collection of theories under a user-specified interpretation for the uninterpreted types and constants. A theory instance is generated and imported, while the axiom instances are generated as proof obligations to ensure that t...

This paper discusses the integration of cultural and natural heritage aspects of landscapes. It presents arguments for the further integration of interests but also points to the potential for conflicts between cultural and natural heritage interests. These are predominantly at the site-management level. The important role of the historical layer is stressed as an integral part of the environme...

Cholesteatoma has been known to be associated with multiple complications either extracranially or intracranially. Among the extracranial complications, mastoiditis and mastoid abscess are the most common. Bezold’s abscess formation with cholesteatoma is a rare occurrence but when present can lead to sinister sequalae if not properly managed. The treatment of cholesteatoma is mainly by surgical...

The 3D visibility skeleton is a data structure used to encode global visibility information about a set of objects. Previous theoretical results have shown that for k convex polytopes with n edges in total, the worst case size complexity of this data structure is Θ(n2k2) [Brönnimann et al. 07]; whereas for k uniformly distributed unit spheres, the expected size is Θ(k) [Devillers et al. 03]. In...

This paper suggests that synchronous designs written in either Verilog or VHDL can be interpreted in terms of a common Hierarchical Finite State Machine model, and shows the principles for extracting the semantics of designs described in either language. Sublanguages with identical semantics are identified, and an algorithm for inferring a minimal number of state variables from VHDL processes i...

Reaction of Cu(NO3)2·3H2O or Cu(CH3COO)2·H2O with the bis(2-hydroxyphenylimine) ligands H2L-H2L gave four Cu(II) complexes of composition [Cu2(L)(NO3)2(H2O)]·MeOH, [Cu2(L)2], [Cu2(L)2] and [Cu2(L)2]·2MeOH. Depending on the spacer unit, the structures are characterized by a dinuclear arrangement of Cu(II) within one ligand (H2L), by a double-stranded [2 + 2] helical binding mode (H2L and H2L) an...

We describe an interface between version 6 of the Maple computer algebra system with the PVS automated theorem prover. The interface is designed to allow Maple users access to the robust and checkable proof environment of PVS. We also extend this environment by the provision of a library of proof strategies for use in real analysis. We demonstrate examples using the interface and the real analy...

PVS is a highly automated framework for speciication and veriication. We show how the language and deduction features of PVS can be used to formalize, mechanize , and apply some useful program transformation techniques. We examine two such examples in detail. The rst is a fusion theorem due to Bird where the composition of a catamorphism (a recursive operation on the structure of a datatype) an...