Building self-evaluation skills through criterion-referenced assessment in public relations

Although technical skills in public relations are essential to practice, skills in self-evaluation, critical thinking, and problem solving are required when new practitioners move to management roles (Van Leuven, 1999). Public relations courses integrate specialist subject knowledge with graduate skill sets and capabilities in non-technical areas (Butcher & Stefani, 1995). Given that autonomy in learning is a skill valued by employers (Clifford, 1999) and advocated by accrediting professional bodies (Anderson, 1999), this study explores how public relations students build skills in and perceive the practice of self-evaluation. Currently, the public relations education literature presents a limited treatment of self-evaluation. Therefore, this study is guided mostly by the education literature and uses criterion-referenced assessment to determine how more than 150 students understand assessment requirements, assess their strengths and weaknesses, and interpret the differences between their self and their tutor's judgement of performance. The results indicate strong support for student understanding of assessment requirements and self-evaluation techniques but lower than expected support for understanding the differences between their self and tutor judgements. These findings are significant to educators, practitioners and professional bodies as they have implications for lifelong learning for public relations professionals

Topological confinement in graphene bilayer quantum rings

We demonstrate the existence of localized electron and hole states in a ring-shaped potential kink in biased bilayer graphene. Within the continuum description, we show that for sharp potential steps the Dirac equation describing carrier states close to the K (or K') point of the first Brillouin zone can be solved analytically for a circular kink/anti-kink dot. The solutions exhibit interfacial states which exhibit Aharonov-Bohm oscillations as functions of the height of the potential step and/or the radius of the ring

A numerical finite size scaling approach to many-body localization

We develop a numerical technique to study Anderson localization in interacting electronic systems. The ground state of the disordered system is calculated with quantum Monte-Carlo simulations while the localization properties are extracted from the ``Thouless conductance'' $g$, i.e. the curvature of the energy with respect to an Aharonov-Bohm flux. We apply our method to polarized electrons in a two dimensional system of size $L$. We recover the well known universal $\beta(g)=\rm{d}\log g/\rm{d}\log L$ one parameter scaling function without interaction. Upon switching on the interaction, we find that $\beta(g)$ is unchanged while the system flows toward the insulating limit. We conclude that polarized electrons in two dimensions stay in an insulating state in the presence of weak to moderate electron-electron correlations.Comment: 5 pages, 4 figure