PPT-Linear analysis of the standing accretion shock instability

Kazuya Takahashi with Yu Yamamoto Shoichi Yamada Waseda Univ Outline Introduction My research Results Standing Accretion Shock Instability SASI New points How Nonspherical structures in progenitors. PCA Limitations of LDA Variants of LDA Other dimensionality reduction methods brPage 2br CSCE 666 Pattern Analysis Ricardo Gutierrez Osuna CSETAMU Linear discriminant analysis two classes Objective LDA seeks to reduce dimensionality while preserv Phil Armitage. Colorado. Processes in Protoplanetary Disks. Disk structure. Disk evolution. Turbulence. Episodic accretion. Single particle evolution. Ice lines and persistent radial structure. Transient structures in disks. Yu-Fen Huang. Hendricks E. A., B. d. . Mcnoldy. , and Wayne H. Schubert. Introduction. TC intensity change is caused by environmental, oceanic, and internal dynamical factors. (Wang and Wu 2004). . An important internal process is the dynamic instability. . “This seems such an economical and elegant method to make cloudy media, one feels that nature would be inexcusably remiss not to have taken advantage of it at some point”. - Steven A. . Balbus. (1995). Christopher C. Lindner, . Milos. . Milosavljevic. , Sean Couch, . Pawan. Kumar. . The University of Texas at Austin. Results. We have conducted hydrodynamic simulations of the viscous post-core-collapse accretion of a rapidly rotating 14 solar mass Wolf-. . We . performed nine simulations to test the sensitivity of our results to resolution, viscous stress-to-pressure ratio (α), the initial rotation parameter (. ξ. l. ), convective energy transport efficiency (. Linear Function. Y = a + bX. Fixed and Random Variables. A FIXED variable is one for which you have every possible value of interest in your sample.. Example: Subject sex, female or male.. A RANDOM variable is one where the sample values are randomly obtained from the population of values.. Linear Discriminant Analysis. Objective. -Project a . feature space (a dataset n-dimensional samples) onto a smaller . -Maintain . the . class separation. Reason. -Reduce computational costs. -Minimize . and Outburst Mechanisms. Zhaohuan. Zhu. Hubble Fellow, Princeton University. Collaborators: Lee Hartmann (. Umich. ), Charles . Gammie. (UIUC), . . Nuria. . Calvet. (. Umich. Pawel. . Artymowicz. U of Toronto. MRI turbulence. Some non-MRI turbulence. Roles and the dangers of turbulence. UCSC Santa Cruz 2010. I borrowed some . figures & slides from. X. Wu (2004). R. Nelson (2008). - Steven A. . Balbus. (1995). The Second Law. T . dS. = . dQ. = -. L. . dt. Where . L. . = cooling loss function (ergs/. s·g. ). The instability criterion. If . δ. S and . δ. (. L. /T) have the same sign, then the parcel of gas tends to return to the background entropy. If they have different signs, then the parcel continues to evolve away from the background condition.. Aggregate Analysis In A CubeSat Centrifuge: A Study Of Primary Accretion Sarah Smallwood Faculty Mentor: Erik Asphaug , School of Earth and Space Exploration Graduate Student Mentor: Elizabeth Dyer Zhaohuan. Zhu. Hubble Fellow, Princeton University. Collaborators: Lee Hartmann (. Umich. ), Charles . Gammie. (UIUC), . . Nuria. . Calvet. (. Umich. ), Jonathan McKinney (UMD),. S. tages of Inertial Confinement Fusion . I. mplosions. V.N. Goncharov. University of Rochester. Laboratory for Laser Energetics. . 60. th. Annual Meeting of the . American Physical Society. Division of Plasma Physics .