We propose guiding vectors to augment graph-based tree synthesis, in which trees are collections of least-cost paths in a graph. Each node has an associated guiding vector; edges parallel to the guiding vector are cheap, but edges are more expensive when their orientation differs from the guiding vector. We further propose an incremental method for assigning guiding vectors over the graph, in w...

Due to its excellent thermal, mechanical, and optical properties, sapphire is one of the most suitable material for integrated optical devices. Although this hard crystalline material is particularly difficult to process, fabrication of Ti-doped sapphire surface channel waveguides by surface structuring [1,2] of planar waveguides or ion in-diffusion [3] has been demonstrated. Generally, device ...

In order to promote local economic recovery under the COVID-19 pandemic, this paper first constructs a big data information processing model, then measure growth of GDP and fiscal revenue driven by consumption, investment export in Guangdong province. The measurement results show that stimulus same intensity, Guangzhou, Shenzhen Foshan perform better index, while Shenzhen, Shaoguan Qingyuan ind...

This report studies chaotic systems with particular emphasis on the recently developed method of E. Ott, C. Grebogi and J. A. Yorke [Ott 1990] (the OGY method) for controlling such systems. Concepts useful in understanding chaos in general are introduced. We can conceptualise chaotic systems as arising from classes of differential equations having particularly intractable solutions sets. Howeve...

OBJECTIVES To overcome the absence of socio-economic information in administrative databases and to monitor social inequalities in health, a material and social deprivation index was developed for Québec and Canada. METHODS The index is based on the smallest area unit used in Canadian censuses, with 400 to 700 persons on average. It includes six socio-economic indicators grouped along two dim...