Review of \u3ci\u3e I Thought Pocahontas Was a Movie : Perspectives on Race/Culture Binaries in Education and Service Professions.\u3c/i\u3e Edited by Carol Schick and James McNinch.

This edited volume argues that a race/culture binary lies at the heart of Canada\u27s ongoing relationship with the descendants of the country\u27s First Peoples. In looking at the service professions, editors Carol Schick and James McNinch trouble taken-for-granted assumptions based upon racial, cultural, and ethnic difference, arguing that representations of Indigenous peoples as culturally inferior, a trope that has replaced the idea of biological inferiority, is highly instrumental in the social positioning and unequal power relations that exists today in Canadian society. In turn, the editors tie this discussion back to Canada\u27s colonial history and the social, material, and ideological conditions produced in previous eras

Funding Allocations Strategies for Improving Nonprofit Organizations\u27 Effectiveness and Sustainability

Nonprofit organizational leaders (NOLs) face laws that require increased transparency and more oversight on funding allocations. Grounded by a conceptual framework of Hersey and Blanchard\u27s situational leadership theory, Burns\u27s transformational leadership theory, and Greenleaf\u27s servant leadership theory, this multiple case study was developed to explore the leadership strategies of NOLs who implemented requirements of New York\u27s Non-Profit Revitalization Act to increase funding allocations to support fulfillment of the organizational mission and achieve sustainability. The study population comprised NOLs from the Northeastern United States, who implemented requirements of the Non-Profit Revitalization Act requirements. Face-to-face semistructured interviews with 5 NOLs, a review of organizational documents, and member-checking were used to collect data for the study. Data were analyzed using a framework method to determine themes, visualization to code the data, and methodological triangulation to validate themes. Three main themes emerged from the data analysis: strategies for building and maintaining relationships increased funding allocations and sustainability, trust and accountability strategies improved organizational mission achievement and funding allocations, and strategies for higher standards and expectations improved sustainability. The findings from this study may contribute to positive social change by providing insight to NOLs about the need to create leadership strategies to build relationships and trust with stakeholders while operating a more responsible nonprofit organization, thereby creating a better connection between organizational systems and increasing service effectiveness

Enhancement of superconductive critical temperatures in almost empty or full bands in two dimensions: possible relevance to beta-HfNCl, C60 and MgB2

We examine possibility of enhancement of superconductive critical temperature in two-dimensions. The weak coupling BCS theory is applied, especially when the Fermi level is near the edges of the electronic bands. The attractive interaction depends on ${\bf k}$ due to screening. The density of states(DOS) does not have a peak near the bottom of the band, but $k$-dependent contribution to DOS (electron density on the Fermi surface) has a diverging peak at the bottom or top. These features lead to significant enhancement of the critical temperatures. The results are qualitatively consistent with the superconductive behaviors of HfNCl (\Tc \le 25K) and ZrNCl(\Tc \le 15K), C$_{60}$ with a field-effect transistor configuration (\Tc = 52K), and MgB$_2$ (\Tc \approx 40K) which have the unexpectedly high superconductive critical transition temperatures.Comment: 5 pages,4 figure

Nearsightedness of Electronic Matter in One Dimension

The concept of nearsightedeness of electronic matter (NEM) was introduced by W. Kohn in 1996 as the physical principal underlining Yang's electronic structure alghoritm of divide and conquer. It describes the fact that, for fixed chemical potential, local electronic properties at a point $r$, like the density $n(r)$, depend significantly on the external potential $v$ only at nearby points. Changes $\Delta v$ of that potential, {\it no matter how large}, beyond a distance $\textsf{R}$, have {\it limited} effects on local electronic properties, which tend to zero as function of $\textsf{R}$. This remains true even if the changes in the external potential completely surrounds the point $r$. NEM can be quantitatively characterized by the nearsightedness range, $\textsf{\textsf{R}}(r,\Delta n)$, defined as the smallest distance from $r$, beyond which {\it any} change of the external potential produces a density change, at $r$, smaller than a given $\Delta n$. The present paper gives a detailed analysis of NEM for periodic metals and insulators in 1D and includes sharp, explicit estimates of the nearsightedness range. Since NEM involves arbitrary changes of the external potential, strong, even qualitative changes can occur in the system, such as the discretization of energy bands or the complete filling of the insulating gap of an insulator with continuum spectrum. In spite of such drastic changes, we show that $\Delta v$ has only a limited effect on the density, which can be quantified in terms of simple parameters of the unperturbed system.Comment: 10 pages, 9 figure

The Coulomb impurity problem in graphene

We address the problem of an unscreened Coulomb charge in graphene, and calculate the local density of states and displaced charge as a function of energy and distance from the impurity. This is done non-perturbatively in two different ways: (1) solving the problem exactly by studying numerically the tight-binding model on the lattice; (2) using the continuum description in terms of the 2D Dirac equation. We show that the Dirac equation, when properly regularized, provides a qualitative and quantitative low energy description of the problem. The lattice solution shows extra features that cannot be described by the Dirac equation, namely bound state formation and strong renormalization of the van Hove singularities.Comment: 3 Figures; minor typo corrections and minor update in Fig. 3

Dynamic coexistence of various configurations: clusters vs.nuclei

The presence of energy shells in metallic clusters and atomic nuclei leads to a peculiar relation between the number of particles N and the structure, and this leads to a strong correlation between the energy spectrum and N. An analysis of experimental data leads to the conclusion that, in addition to the static Jahn-Teller effect, the dynamic effect leading to the quantum coexistence of different configurations (quantum oscillations) plays an important role. Such suggested coexistence is an essential feature of clusters as well as nuclei, both finite Fermi systems.Comment: 6 pages, 2 figure

Fermi Edge Singularities in the Mesoscopic Regime: II. Photo-absorption Spectra

We study Fermi edge singularities in photo-absorption spectra of generic mesoscopic systems such as quantum dots or nanoparticles. We predict deviations from macroscopic-metallic behavior and propose experimental setups for the observation of these effects. The theory is based on the model of a localized, or rank one, perturbation caused by the (core) hole left behind after the photo-excitation of an electron into the conduction band. The photo-absorption spectra result from the competition between two many-body responses, Anderson's orthogonality catastrophe and the Mahan-Nozieres-DeDominicis contribution. Both mechanisms depend on the system size through the number of particles and, more importantly, fluctuations produced by the coherence characteristic of mesoscopic samples. The latter lead to a modification of the dipole matrix element and trigger one of our key results: a rounded K-edge typically found in metals will turn into a (slightly) peaked edge on average in the mesoscopic regime. We consider in detail the effect of the "bound state" produced by the core hole.Comment: 16 page