Comparison of Nuclear Suppression Effects on Meson Production at High p_T and p_L

The medium effect on the pion distribution at high $p_T$ in $AA$ collisions is compared to that of the pion distribution at high $p_L$ in $pA$ collisions. Both the suppression of the spectra and the energy losses of the measured pions are studied. Although the medium effect on $p_T$ is larger than on $p_L$, the difference is found surprisingly to be not as big as one would naively expect.Comment: 8 RevTex pages with 5 figure

European new entry into UK grocery retailing

Until recently, the UK grocery retail market was extremely national in nature, dominated by home-grown incumbents which had developed from regional strongholds (Sainsbury in southern England, Asda in northern England, for example). The lack of any significant presence in the UK market from Europe or the wider world was a remarkable characteristic, particularly when Europe had a number of cross-border grocery retailers. In the final years of the last decade, this changed, when two European grocery retailers, Germany's Aldi and the Danish Netto, entered the UK market. The entry of these retailers, and the possible entry of others like them, raises a number of significant matters relating to the structure, present and future, of the UK grocery retail market. The objective of this article is to explain how these new entrants were able to penetrate the market's barriers to entry, to analyse the events which created the market opportunity targeted, and to describe the response of UK incumbents and the long-run effects on the market which are likely to result

Nucleon participants or quark participants?

We show that centrality dependence of charged particle pseudorapidity density at midrapidity in Au+Au collisions at RHIC is well described as proportional to We show that centrality dependence of charged particle pseudorapidity density at midrapidity in Au+Au collisions at RHIC is well described as proportional to the number of participating constituent quarks. In this approach there is no need for an additional contribution from hard processes usually considered in the models based on the number of the nucleon participants.Comment: 3 pages, 4 figures, latex, version accepted for publication in Phys.Rev.

Parton Distributions in the Valon Model

The parton distribution functions determined by CTEQ at low $Q^2$ are used as inputs to test the validity of the valon model. The valon distributions in a nucleon are first found to be nearly $Q$ independent. The parton distribution in a valon are shown to be consistent with being universal, independent of the valon type. The momentum fractions of the partons in the valon add up separately to one. These properties affirm the validity of the valon model. The various distributions are parameterized for convenient application of the model.Comment: 9 pages + 9 figures in ep

Dreaming Big: Library-led Digital Scholarship for Undergraduates at a Small Institution

In the summer of 2016, Gettysburg College’s Musselman Library piloted a student-focused, library-led initiative designed to promote creative undergraduate research: the Digital Scholarship Summer Fellowship. The fellowship is a ten-week, paid summer program for rising sophomores and juniors that introduces the student fellows to digital scholarship, exposes them to a range of digital tools, and provides space for them to converse with appropriate partners about research practices and possibilities. Unlike other research fellowship opportunities, the Digital Scholarship Summer Fellowship is programmatic, based on a curriculum designed to provide students a broad introduction to digital scholarship. Digital tools, project management, documentation, and the philosophy behind digital scholarship are equally considered. While a student-created, public-facing project is an expected outcome of the fellowship, the process of getting to that point is the primary pedagogical emphasis. Students are encouraged to use materials from Gettysburg College’s Special Collections & College Archives when conceiving their projects. Using our historic collections as the foundation of a digital project strengthens existing connections between the library and the academic curriculum and provides additional exposure to the library’s collections. The fellowship was inspired by digital scholarship initiatives at peer institutions and grew from the library’s position as a campus leader in supporting creative undergraduate research. By combining the best aspects from a variety of sources, we were able to create a new learning experience that allowed our students to start small and dream big

The market for insulation in Alaska and feasibility of the regional manufacture of insulating materials

This investigation was undertaken jointly by the Mineral Industry Research Laboratory and the Institute of Business, Economic and Government Research at the University of Alaska. It is one of a continuing series of studies concerning the market and utilization rate for selected structural materials within Alaska. The overall objective of these studies is to identify opportunities for the regional manufacture of selected building products. In this manner, this limited study of insulation markets complements more extensive previous studies concerning Alaskan cement and clay products, markets and manufacturing feasibility

Generalized splines in ℝn and optimal control

We give a new time-dependent definition of spline curves in ℝn, which extends a recent definition of vector-valued splines introduced by Rodrigues and Silva Leite for the time-independent case. Previous results are based on a variational approach, with lengthy arguments, which do not cover the non-autonomous situation. We show that the previous results are a consequence of the Pontryagin maximum principle, and are easily generalized using the methods of optimal control. Main result asserts that vector-valued splines are related to the Pontryagin extremals of a non-autonomous linear-quadratic optimal control problem

Natural resource base of the Fairbanks North Star Borough

This report on the natural resource base of the Fairbanks North Star Borough is one of several continuing research projects related to community planning in Alaska. It represents an interdisciplinary effort of the Mineral Industry Research Laboratory and the Institute of Social, Economic and Government Research at the University of Alaska. The result is a synthesis of the economic development potential of natural resources in the greater Fairbanks region