Efficient Spherical Harmonic Transforms aimed at pseudo-spectral numerical simulations

In this paper, we report on very efficient algorithms for the spherical harmonic transform (SHT). Explicitly vectorized variations of the algorithm based on the Gauss-Legendre quadrature are discussed and implemented in the SHTns library which includes scalar and vector transforms. The main breakthrough is to achieve very efficient on-the-fly computations of the Legendre associated functions, even for very high resolutions, by taking advantage of the specific properties of the SHT and the advanced capabilities of current and future computers. This allows us to simultaneously and significantly reduce memory usage and computation time of the SHT. We measure the performance and accuracy of our algorithms. Even though the complexity of the algorithms implemented in SHTns are in $O(N^3)$ (where N is the maximum harmonic degree of the transform), they perform much better than any third party implementation, including lower complexity algorithms, even for truncations as high as N=1023. SHTns is available at https://bitbucket.org/nschaeff/shtns as open source software.Comment: 8 page

Evolution of Porcelain Tea Ware in Europe From Hizen Porcelain Tea to European Porcelain Tea Service

(Translated: Jenine Heaton) Session statement 4: Tea viewed from the comparative culture and cultural interactio

Laparoscopic Endoscopic Cooperative Surgery: Current Status and Perspective

Laparoscopic endoscopic cooperative surgery (LECS) is now performed worldwide as a result of the invention of new operative techniques. It is seromuscular resection by laparoscopy for gastric submucosal tumors such as gastrointestinal stromal tumors (GISTs). Endoscopic dissection of the mucosal to the submucosal layer determines the appropriate incision line, resects the tumor, and closes the visceral wall defect. Various minimally invasive LECS techniques are now well established. LECS-associated techniques, adaptation of them, and challenges for the future are reviewed in this chapter

WHO PAYS FOR ROAD VIOLENCE? RETHINKING ROADS, CYCLING, AND TORT LAW

Road violence is now commonplace in North American cities. However, it has not always been like this. During the advent of the automobile, every road death was a source of outrage. It was concerted action from the motor industry, organized into the self-named “motordom,” that managed to shift the blame of the deaths. With the new perception that cars had the right to the roads, victims of road violence would start sharing that blame with drivers in the popular opinion. This shift affected law, including tort law. Before the advent of the motor vehicle, cycling law was an area of legal studies, called the “law of wheelmen.” It was put aside after the automobile, with the creation of road traffic laws clearly centred on motorized vehicles. Common law courts, facing tort claims arising from road violence, remained loyal to the negligence principle. This thesis explores alternatives to the classical car-centred understanding of tort law in Ontario. With an advocacy-oriented approach, it focuses on collisions involving bicycles and motor vehicles, with the intent of providing solutions that result in better distribution of the burden caused by automobiles on road safety. A comparative lens was used in order to find and analyze better options in other jurisdictions

Umbilical cord blood coagulability, acidosis and intracranial hemorrhage

Peer Reviewe

相関から眺める生体分子運動の解析

要旨あり生体高分子の揺らぎとダイナミクス－シミュレーションと実験の統計解析－研究詳