Stereo TV enhancement study Final technical report

Human depth perception of television displays in stereo, and nonstereo presentation

When Church Teachings and Policy Commitments Collide: Perspectives on Catholics in the U.S. House of Representatives

This article investigates the influence of religious values on domestic social policy-making, with a particular focus on Catholics. We analyze roll call votes in the 109th Congress and find that Catholic identification is associated with support for Catholic Social Teaching, but both younger Catholics and Republican Catholics are found less supportive. In followup interviews with a small sample of Catholic Republicans, we find that they justify voting contrary to Church teaching by seeing its application to domestic social issues as less authoritative than Church moral teachings on issues like abortion

THE IMPLICATIONS OF AN EXPORT TAX ON SECTORAL GROWTH: A CASE IN PAKISTAN

Impacts of an export tax on growth in the cotton and yarn markets were examined. Results of a simulation show that the export tax on raw fiber decreased the rate of growth in the fiber sector by 80%, and also decreased growth in yarn production by 0.7%.Crop Production/Industries, International Relations/Trade,

The Entrepreneurial State Goes to Europe

This article investigates state-level export programs in response to the emerging new economic and political regime of Europe 1992. Little related export promotion activity is found, even in states reputed to have the most active entrepreneurial policies. The authors conclude that states have few resources to invest in export promotion and are inappropriate jurisdictions around which to organize such policy, despite the much touted entrepreneurial state

Digital Diversity: Broadband and Indigenous Populations in Alaska

Presented at the Experts Workshop. Sponsored by the Ford Foundation.Alaska Natives comprise several cultural and linguistic groups including Inupiat, Yupik, Athabascan, Aleut, Tlingit and Haida, organized into some 226 tribes. Approximately two-thirds of the indigenous population live in more than 200 rural villages, most of which are remote settlements with fewer than 200 people and no road access. Since the late 1970’s, all communities with at least 25 permanent residents have had telephone service, but broadband connectivity remains limited. The major mechanism for extending Internet access to rural Alaska has been federal universal service funds, specifically the E-rate program that subsidizes Internet access for schools and libraries, and the Rural Health program that subsidizes connectivity for rural health clinics and hospitals. Under the federal Stimulus program, Alaska has also recently received funding for infrastructure to extend broadband in southwest Alaska, for improved connectivity for rural libraries, and for training and support for rural public computer centers. These initiatives primarily support improvements in Internet and broadband availability for rural Alaska. However, this paper proposes a more rigorous framework including not only availability, but more broadly access, and also adoption, and examines how these concepts apply to Alaska natives. The paper also examines other elements of digital diversity, including innovation in applications and content, ICT entrepreneurship, and participation in telecommunications policy-making

Beyond Infrastructure: Broadband for Development in Remote and Indigenous Regions

Recent telecommunications stimulus projects in the U.S. and Canada were intended to increase availability of broadband through funding infrastructure investments, largely in rural and remote regions. However, true access involves more than availability; it also includes affordability and adoption. This paper presents a framework for analyzing broadband adoption that takes into consideration geographical, economic and cultural environments in indigenous communities. It includes an overview of potential social and economic impacts of broadband in remote areas, using examples from the Alaska study and the Canadian North. It then reports on results of an evaluation of Internet use and potential adoption of broadband in remote indigenous communities of southwest Alaska. Finally, the paper provides a comparative analysis of U.S. and Canadian policies intended to achieve affordable access to broadband for rural users and sustainable business models for rural broadband providers.Ye

Dark Matter Halos in Galaxies and Globular Cluster Populations

We combine a new, comprehensive database for globular cluster populations in all types of galaxies with a new calibration of galaxy halo masses based entirely on weak lensing. Correlating these two sets of data, we find that the mass ratio $\eta \equiv M_{GCS}/M_{h}$ (total mass in globular clusters, divided by halo mass) is essentially constant at $\langle \eta \rangle \sim 4 \times 10^{-5}$, strongly confirming earlier suggestions in the literature. Globular clusters are the only known stellar population that formed in essentially direct proportion to host galaxy halo mass. The intrinsic scatter in $\eta$ appears to be at most 0.2 dex; we argue that some of this scatter is due to differing degrees of tidal stripping of the globular cluster systems between central and satellite galaxies. We suggest that this correlation can be understood if most globular clusters form at very early stages in galaxy evolution, largely avoiding the feedback processes that inhibited the bulk of field-star formation in their host galaxies. The actual mean value of $\eta$ also suggests that about $1/4$ of the \emph{initial} gas mass present in protogalaxies collected into GMCs large enough to form massive, dense star clusters. Finally, our calibration of $\langle \eta \rangle$ indicates that the halo masses of the Milky Way and M31 are $(1.2\pm0.5)\times 10^{12} M_{\odot}$ and $(3.9\pm1.8)\times 10^{12} M_{\odot}$ respectively.Comment: 6 pages, ApJL in pres

Microwave conductivity of d-wave superconductors with extended impurities

We investigate the influence of extended scatterers on the finite temperature and finite frequency microwave conductivity of d-wave superconductors. For this purpose we generalize a previous treatment by Durst and Lee, which is based on a nodal approximation of the quasiparticle excitations and scattering processes, and apply it to the analysis of experimental spectra of YBCO-123 and BSCCO-2212. For YBCO, we find that accounting for a slight spatial extension of the strong scattering in-plane defects improves the fit of the low temperature microwave conductivity to experiment. With respect to BSCCO we conclude that it is necessary to include a large concentration of weak-to-intermediate strength extended scatterers, which we attribute to the out-of plane disorder introduced by doping. These findings for BSCCO are consistent with similar analyses of the normal state ARPES spectra and of STM spectra in the superconducting state, where an enhanced forward scattering has been inferred as well.Comment: 10 pages, 11 figure