Titlebook: Computational Geometry and its Applications; CG ‘88 International Hartmut Noltemeier Conference proceedings 1988 Springer-Verlag Berlin Hei

Saline

Random Fibre and Surface Systems,rged within .(.) steps giving .(.). This result implies that for a large class of metrics . in the plane the .-Voronoi diagram of . points can be computed within optimal .(. log .) time. Among these metrics are, for example, the symmetric convex distance functions as well as the metric defined by the city layout of Moscow or Karlsruhe.

半导体

Celiac-Plexus

Abstract voronoi diagrams and their applications,rged within .(.) steps giving .(.). This result implies that for a large class of metrics . in the plane the .-Voronoi diagram of . points can be computed within optimal .(. log .) time. Among these metrics are, for example, the symmetric convex distance functions as well as the metric defined by the city layout of Moscow or Karlsruhe.

Geyser

Random Tessellations and Cox Processes,iderable savings in storage space, without losing efficiency in any other relevant aspect. This is shown to hold for typical operations in a variety of practical situations. To better grasp the inherent power of twin grid files, variations of crucial parameter settings are studied in detail.

要控制

,Using graphical information from a grid file’s directory to visualize patterns in Cartesian productsing as they apparently lack a common ground. By example of a region directory, a particular directory for the grid file, we show how an elementary measure, namely data density, can usefully serve data management and data visualization by providing the basis for a common structure. The region direct

inhumane

Twin grid files: A performance evaluation,tilization, even for independently and uniformly distributed points. We evaluate the performance of two types of space optimizing access schemes, the optimal static and the suboptimal dynamic twin grid files. It turns out that in comparison with the (standard) grid file, twin grid files achieve cons

玛瑙

四目在模仿

Point location in arrangements,e .(..) for arbitrary κ>0, where . is the number of hyperplanes. The main result is the .. factor in the asymptotic expression for the running time, whereas all previously known algorithms depend exponentially on ..

Nausea

,Internal and external algorithms for the points-in-regions problem — the INSIDE join of geo-relatioeprocessing is allowed. This problem arises in geometric database systems. More specifically it is equivalent to computing the . join of geo-relational algebra, a conceptual model for geo-data management. We describe efficient algorithms for solving this problem based on plane-sweep and divide-and-c

Chagrin

Geo-relational algebra: A model and query language for geometric database systems,emantics, expressive: allow to express with ease all desired query and data manipulation task, efficiently implementable..To achieve these goals we propose to extend relational database management systems by integrating geometry at all levels: At the conceptual level, relational algebra is extended