Infrared Behaviour of Massless Integrable Flows entering the Minimal Models from phi_31

It is known that any minimal model M_p receives along its phi_31 irrelevant direction *two* massless integrable flows: one from M_{p+1} perturbed by phi_{13}, the other from Z_{p-1} parafermionic model perturbed by its generating parafermion field. By comparing Thermodynamic Bethe Ansatz data and ``predictions'' of infrared Conformal Perturbation Theory we show that these two flows are received by M_p with opposite coupling constants of the phi_31 irrelevant perturbation. Some comments on the massless S matrices of these two flows are added.Comment: 12 pages, Latex - One misprinted (uninfluent) coefficient corrected in Tab.

Going by the moon and the stars: Stories of two Russian Mennonite women

The stories of women\u27s religious lives are essential to understanding religion. This thesis records and interprets two Russian Mennonite women\u27s religious lives, using methods of feminist ethnography. The first chapter is a video which presents Agatha Janzen and Katja Enns talking about their childhoods in the Soviet Union in the 1920s and 305, their flight to Germany during World War ll, and their subsequent emigration and life in Canada. Chapter 2 tells and interprets Agatha\u27s and Katja\u27s experiences of marriage during the war, and the effect of their status as widow (Agatha) and single mother (Katja) upon their entry into the Canadian Mennonite church. Chapter 3 discusses the structure and content of the women\u27s stories about the war, and the ways they have integrated their war stories into their religious life. Chapter 4 considers the ways Agatha and Katja are Mennonite today, looking especially at the role of prayer, preaching, and personal relationships in their lives. The last chapter discusses the process of deciding what is religious about a life, the merits and tensions of feminist ethnography, and the implications of video for life history. Reflections on the effects of this work on Kalja, Agatha, and me conclude the study

The first-order spectral flow of the odd signature operator on a manifold with boundary

AbstractIn this paper we study spectral flow for paths of signature operators associated to analytic paths of flat connections on an odd-dimensional manifold with boundary. We provide a topological method for computing the “first order” spectral flow using cup products

A general hybrid radiation transport scheme for star formation simulations on an adaptive grid

Radiation feedback plays a crucial role in the process of star formation. In order to simulate the thermodynamic evolution of disks, filaments, and the molecular gas surrounding clusters of young stars, we require an efficient and accurate method for solving the radiation transfer problem. We describe the implementation of a hybrid radiation transport scheme in the adaptive grid-based FLASH general magnetohydrodynamics code. The hybrid scheme splits the radiative transport problem into a raytracing step and a diffusion step. The raytracer captures the first absorption event, as stars irradiate their environments, while the evolution of the diffuse component of the radiation field is handled by a flux-limited diffusion (FLD) solver. We demonstrate the accuracy of our method through a variety of benchmark tests including the irradiation of a static disk, subcritical and supercritical radiative shocks, and thermal energy equilibration. We also demonstrate the capability of our method for casting shadows and calculating gas and dust temperatures in the presence of multiple stellar sources. Our method enables radiation-hydrodynamic studies of young stellar objects, protostellar disks, and clustered star formation in magnetized, filamentary environments.Comment: 16 pages, 15 figures, accepted to Ap

Teachers’ Cognitive Processing of Complex School-Based Scenarios: Differences Across Experience Levels

Teachers are confronted with and must process challenging situations every day. Yet the development trajectory of their processing ability is unknown. Our two-part mixed method studies use a think-aloud methodology to understand how teachers cognitive process difficult school-based and non-school-based scenarios. Studies 1 and 2 examine the differences between expert, beginning, and pre-service teachers without and with pre-existing response options, respectively. Results from qualitative (but not quantitative) analyses indicate group differences in strategy, scope, content, and reasoning. Furthermore, we find that teaching is a domain-specific expertise. We discuss how this information can inform teacher education and professional development programs