Observationally-Motivated Analysis of Simulated Galaxies

The spatial and temporal relationships between stellar age, kinematics, and chemistry are a fundamental tool for uncovering the physics driving galaxy formation and evolution. Observationally, these trends are derived using carefully selected samples isolated via the application of appropriate magnitude, colour, and gravity selection functions of individual stars; conversely, the analysis of chemodynamical simulations of galaxies has traditionally been restricted to the age, metallicity, and kinematics of `composite' stellar particles comprised of open cluster-mass simple stellar populations. As we enter the Gaia era, it is crucial that this approach changes, with simulations confronting data in a manner which better mimics the methodology employed by observers. Here, we use the \textsc{SynCMD} synthetic stellar populations tool to analyse the metallicity distribution function of a Milky Way-like simulated galaxy, employing an apparent magnitude plus gravity selection function similar to that employed by the RAdial Velocity Experiment (RAVE); we compare such an observationally-motivated approach with that traditionally adopted - i.e., spatial cuts alone - in order to illustrate the point that how one analyses a simulation can be, in some cases, just as important as the underlying sub-grid physics employed.Comment: Accepted for publication in PoS (Proceedings of Science): Nuclei in the Cosmos XIII (Debrecen, Jul 2014); 6 pages; 3 figure

Biometric Data and Bone Identification of Topmouth Gudgeon Pseudorasbora Parva and Sunbleak Leucaspius Delineatus

Identification and analysis of the size and composition of prey taken by piscivorous predators assists in the further understanding of ecology of piscivorous fauna (Mann & Beaumont 1980, Hansel et al. 1988, Copp & Roche 2003). Comprehensive evaluation of the digested prey is central to the assessment of predation impacts and is equally important for sustainable fisheries management. Two non-native fish species in England that may be potential prey for native species are sunbleak Leucaspius delineatus (Heckel) and topmouth gudgeon Pseudorasbora parva (Temminck et Schlegel). These species were introduced to English waters in the mid 1980’s (Farr - Cox 1996, Gozlan et al. 2002) where they have since developed extensive populations (Gozlan et al. 2003, Hickley & Chare 2004). Recent studies associate sunbleak and topmouth gudgeon with novel non-native parasites (Beyer et al. 2005, Gozlan et al. 2005). Results such as these have emphasized the need to be able to identify these two species as part of the native predators’ diet. The aim of the study was to provide a tool for species identification and to elaborate the biometric relationships between bone dimensions and body size of sunbleak and topmouth gudgeon. Head bones of fish are particularly useful for identifying the size and composition of prey species from the food remains of predators, as they withstand digestion and are taxonomically valuable (Copp & Kováč 2003)

Strongly Inhomogeneous Phases and Non-Fermi Liquid Behavior in Randomly Depleted Kondo Lattices

We investigate the low-temperature behavior of Kondo lattices upon random depletion of the local $f$-moments, by using strong-coupling arguments and solving SU($N$) saddle-point equations on large lattices. For a large range of intermediate doping levels, between the coherent Fermi liquid of the dense lattice and the single-impurity Fermi liquid of the dilute limit, we find strongly inhomogeneous states that exhibit distinct non-Fermi liquid characteristics. In particular, the interplay of dopant disorder and strong interactions leads to rare weakly screened moments which dominate the bulk susceptibility. Our results are relevant to compounds like Ce_{x}La_{1-x}CoIn_5 and Ce_{x}La_{1-x}Pb_3Comment: 4 pages, 5 figure

Mott transition in the Hubbard model away from particle-hole symmetry

We solve the Dynamical Mean Field Theory equations for the Hubbard model away from the particle-hole symmetric case using the Density Matrix Renormalization Group method. We focus our study on the region of strong interactions and finite doping where two solutions coexist. We obtain precise predictions for the boundaries of the coexistence region. In addition, we demonstrate the capabilities of this precise method by obtaining the frequency dependent optical conductivity spectra.Comment: 4 pages, 4 figures; updated versio

La Vie En Robot

School of Art and Design: Integrative Project ThesisArt and Design, School ofUniversity of MichiganUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/60494/1/IPThesis_Stolz.pd

SCHOOL LEADERSHIP IN THE 21ST CENTURY: SHARED EXPERIENCES OF THE CLARETIAN PRINCIPALS IN NORTHEAST INDIA

Education in the 21st century is rapidly progressing into new frontiers. Leadership of the education sector requires 21st century skills and mind-sets. Building and preparing principals to embrace and implement these new leadership skills is a critical challenge confronting the education sector today. The experiences of challenges, success and constraints faced by the principals in exercising their 21st century leadership skills need to be unearthed and made sense in order to navigate it with real expertise that twenty first century looks for. The purpose of this qualitative study was to explore the experience of principals’ readiness and preparedness for 21st century leadership skills and to describe and interpret them. The study used purposive sampling, semi-structured in-depth interviews for collecting the data, and Interpretative Phenomenological Analysis (Smith et al., 2009) for analyzing the data. The seven principals of Claretian-run secondary schools in northeast India were the participants of the study.The study brought out nine superordinate themes of experience in four domains of 21st century principal leadership and interpretive findings. A further analysis on four domains and their interpretive findings brought out four key leadership roles demonstrated by the principals, namely; 1) Supervising & managing the teaching and learning of the school 2) Stakeholder engagement 3) Personnel resource management and climate building 4) Innovative practice building & Technology resource management. Two dimensions namely, reflective and Claretian, emerged as factors influencing and guiding the leadership practices. The Four domain leadership findings and the framework of key leadership roles and competency models that emerged are in alignment with the six school leadership theories in the extant literature.Principals showed their readiness in four domains of 21st century leadership skills by demonstrating four key leadership roles and corresponding competency areas and skills. The key leadership roles are dynamically interrelated and permeated across the domains of 21st century principal leadership, while their importance in each domain has been significantly experienced by the principals