508 research outputs found
Evaluation of Mutual Fund Performance and Risk Levels Under Different Market Conditions, 1972-81
Adi S. Karna is Professor of Finance in the Department of Management and Finance at Southeastern Louisiana University
Electronic conduction in a three-terminal molecular transistor
The electronic conduction of a novel, three-terminal molecular architecture,
analogous to a heterojunction bipolar transistor is studied. In this
architecture, two diode arms consisting of donor-acceptor molecular wires fuse
through a ring, while a gate modulating wire is a \pi-conjugated wire. The
calculated results show the enhancement or depletion mode of a transistor by
applying a gate field along the positive or negative direction. A small gate
field is required to switch on the current in the proposed architecture. The
changes in the electronic conduction can be attributed to the intrinsic dipolar
molecular architecture in terms of the evolution of molecular wavefunctions,
specifically the one associated with the terphenyl group of the modulating wire
in the presence of the gate field.Comment: 13 pages, 5 figure
Be Credible: Information Literacy for Journalism, Public Relations, Advertising and Marketing Students
This project was funded by KU Libraries’ Parent’s Campaign with support from the David Shulenburger Office of Scholarly Communication & Copyright and the Open Educational Resources Working Group in the University of Kansas Libraries.This free and open textbook teaches college-level journalism students to become information experts.
Using the themes of credibility and information literacy, the book helps today’s students, who start out all their research with Google and Wikipedia, to specialize in accessing, evaluating, and managing information that often is not accessible through Google searches.
The book includes chapters on public records, freedom of information requests, nonprofit organizations, for-profit companies, scholarly research, public data, interviews and more.
Through current examples, instructional videos, suggested classroom activities, and practitioner insights, the authors challenge students to examine the credibility of the sources they use as current and future professional communicators
Density Matrix Perturbation Theory
An expansion method for perturbation of the zero temperature grand canonical
density matrix is introduced. The method achieves quadratically convergent
recursions that yield the response of the zero temperature density matrix upon
variation of the Hamiltonian. The technique allows treatment of embedded
quantum subsystems with a computational cost scaling linearly with the size of
the perturbed region, O(N_pert.), and as O(1) with the total system size. It
also allows direct computation of the density matrix response functions to any
order with linear scaling effort. Energy expressions to 4th order based on only
first and second order density matrix response are given.Comment: 4 pages, 2 figure
Theoretical Study of Physisorption of Nucleobases on Boron Nitride Nanotubes: A New Class of Hybrid Nano-Bio Materials
We investigate the adsorption of the nucleic acid bases, adenine (A), guanine
(G), cytosine (C), thymine (T) and uracil (U) on the outer wall of a high
curvature semiconducting single-walled boron nitride nanotube (BNNT) by first
principles density functional theory calculations. The calculated binding
energy shows the order: G>A\approxC\approxT\approxU implying that the
interaction strength of the (high-curvature) BNNT with the nucleobases, G being
an exception, is nearly the same. A higher binding energy for the G-BNNT
conjugate appears to result from a stronger hybridization of the molecular
orbitals of G and BNNT, since the charge transfer involved in the physisorption
process is insignificant. A smaller energy gap predicted for the G-BNNT
conjugate relative to that of the pristine BNNT may be useful in application of
this class of biofunctional materials to the design of the next generation
sensing devices.Comment: 17 pages 6 figure
- …