Introduction to The Chinese and the Iron Road

Excerpt from The Chinese and the Iron Road: Building the Transcontinental Railroad, edited by Gordon H. Chang and Shelley Fisher Fishkin, with Hilton Obenzinger and Roland Hs

Drell-Yan Non-Singlet Spin Cross Sections and Spin Asymmetry to O(αs2)O(\alpha_s^2) (II)

We present predictions for the non-singlet Drell-Yan longitudinal spin cross sections and spin asymmetry, $A_{LL}$, in proton-proton collisions at large $p_T$ at the RHIC energy of 200\gev at next-to-leading order QCD. The higher order corrections to the non-singlet polarized cross section, $\sigma_{NS}^{LL}$, are sizeable and similar to those found for the unpolarized cross section. The non-singlet asymmetry parameter, $A^{NS}_{LL}$, is very stable against higher order corrections and is a direct measurement of the non-singlet (i.e. valence) polarized quark distributions within the proton.Comment: 24 pages, 13 figure

The 47 Percent: U.S. Trends in Income Maintenance and Medicaid Spending, 1990-2011

We analyze trends and variations in state-level expenditure growth for Medicaid, SSI, SNAP, and TANF. We explore three areas of interest: (1) How program structure impacts growth; (2) How programs responded to the 2008/2009 recession; and (3) How state preference for limited government, measured by Right- To-Work (RTW) status and political affiliation, impacts program expenditure growth. Findings show that program structure impacts expenditure growth: the state-matched programs like TANF and Medicaid grew slower from 1990-2011 than did open-ended federal programs like SNAP. OLS models found states with RTW policies and large Hispanic populations positively associated with higher income maintenance and Medicaid expenditure growth

Corporate E-banking: A Study based on DeLone and McLean’s IS Success Model

Although there are ample of studies dealing with retail internet banking, very few studies have investigated corporate internet banking. The objective of the current research is to study the determinants of the intention to continue use online banking of the existing corporate customers. This study collected data from 154 customers of an international bank to test a model developed from the DeLone and McLean’s IS success model. The results show that system quality contributes most to the perception of overall quality of the corporate e-banking service as well as the impact on the future use intention. Other factors that are found to be important are human service quality, information quality, and accuracy and security of the system

Kondo effect and spin filtering in triangular artificial atoms

We study strongly correlated states in triangular artificial atoms. Symmetry-driven orbital degeneracy of the single particle states can give rise to an SU(4) Kondo state with entangled orbital and spin degrees of freedom, and a characteristic phase shift $\delta = \pi/4$. Upon application of a Zeeman field, a purely orbital Kondo state is formed with somewhat smaller Kondo temperature and a fully polarized current through the device. The Kondo temperatures are in the measurable range. The triangular atom also provides a tool to systematically study the singlet-triplet transitions observed in recent experiments.Comment: 5 pages, 2 figure