Diffractive vector meson production at large-tt in coherent hadronic interactions at CERN LHC

The diffractive vector meson photoproduction with hadron dissociation in coherent hadron-hadron interactions at LHC energies is studied assuming that the color singlet $t$-channel exchange carries large momentum transfer. We estimate the rapidity distribution and total cross section for the processes $pp \rightarrow p V X$ and $PbPb \rightarrow Pb V X$ ($V = \rho$ or $\Upsilon$) considering the non-forward solution of the BFKL equation at high energy and large momentum transfer. Our results indicate that the experimental identification of these processes can be feasible at the LHC.Comment: 11 pages, 3 figures, 1 table. Version to be published in European Physical Journal

Understanding Student Allies on Campus

This paper explores the current gap of research on student allies. Specifically it looks at the definitions associated with being an ally and the difficulties in identifying such students on college campuses. It examines both ally action and developmental models. These models not only illustrate general progressions of development, but are also a springboard for examining the issues facing allies. The paper highlights the roles of student allies on campus and how student affairs professionals and faculty can support and challenge such students

Complex-shaped beam element and graph-based optimization of compliant mechanisms

Compliant mechanisms are designed to be intentionally flexible, providing hingeless mechanisms. This work contributes a complex-shaped beam element formulation in conjunction with the ground structure approach. We identify compliant mechanism design solutions by using evolutionary topology optimization and increase flexibility by using a parametrization concept based on graph theory. The new operators for evolutionary optimization are also explained and sample problems are used to address the question of how our contribution increases design solutions spac