Tahun Terbit

2009

Since the development of the radiating electron theory by P. A.M. Dirac in 1938 [P. A.M. Dirac, Proc. R. Soc. Lond. A 167, 148 (1938)], many authors have tried to reformulate this model, called the “radiation reaction”. Recently, this equation has become important for ultra-intense laser–electron (plasma) interactions. In our recent research, we found a stabilized model of the radiation r…

Anomalous transitions involving photons derived by many-body interaction of the form ∂μGμ in the standard model are studied for the first time. This does not affect the equation of motion in the bulk, but modifies the wavefunctions, and causes an unusual transition characterized by a timeindependent probability. In the transition probability at a time interval T expressed genera…

We analyzed the genetic structure of the radiolarian morphospecies Larcopyle buetschlii from the surface to deep waters (up to 2000 m) in the Japan Sea using the internal transcribed spacer (ITS) regions of ribosomal RNA genes. Each individual had several ITS variants, but these polymorphisms show no vertical phylogeographic structure, suggesting a single biological species. Its rapid clonal re…

Tahun Terbit

2004

Edisi

ed. 1

ISBN/ISSN

979-685-307-8

Deskripsi Fisik

xxi, 898 p. : ill. ; 21 cm

No. Panggil

R 373.003 SIT k

Let k be an algebraically closed field of prime characteristic p, and let P be a p-subgroup of a finite group G. We give sufficient conditions for the kG-Scott module Sc(G, P) with vertex P to remain indecomposable under the Brauer construction with respect to any subgroup of P. This generalizes similar results for the case where P is abelian. The background motivation for this note is the fact…

An animal’s movement speed affects all behaviors and underlies the intensity of an activity, the time it takes to complete it, and the probability of successfully completing it, but which factors determine how fast or slow an animal chooses to move? Despite the critical importance of an animal’s choice of speed (hereafter designated as ‘‘speed-choice’’), we still lack a framework fo…

We use the Rayleigh integral (RI) as an approximation to the Helmholtz–Kirchoff integral to model infrasound generation and propagation from underground chemical explosions at distances of 250 mout to 5km as part of the Source Physics Experiment (SPE). Using a sparse network of surface accelerometers installed above ground zero, we are able to accurately create synthetic acoustic waveforms an…

Because the Earth’s crust is quite heterogeneous and consists of various types of rocks, many faults are located near material interfaces. Recent observational studies have revealed that some faults cross the interfaces, but theoretical treatment of their dynamic behaviour is still undeveloped. In this paper, we develop a boundary integral equation method (BIEM) to analyse the dynamic behavio…

We present high-resolution tomographic images in source areas of 26 large crustal earthquakes (M 6.0–7.2) which occurred in Northeast Japan (Tohoku) during the past 120 yr from 1894 to 2014. Prominent low-velocity (low-V) and high Poisson’s ratio (high-σ) anomalies are revealed in the crust and mantle wedge under the source areas. Beneath the volcanic front and backarc areas, the low-V…