13,706 research outputs found
Baryonic Operators for Lattice Simulations
The construction of baryonic operators for determining the N* excitation
spectrum is discussed. The operators are designed with one eye towards
maximizing overlaps with the low-lying states of interest, and the other eye
towards minimizing the number of sources needed in computing the required quark
propagators. Issues related to spin identification are outlined. Although we
focus on tri-quark baryon operators, the construction method is applicable to
both mesons and penta-quark operators.Comment: 3 pages, poster presented at Lattice2003(spectrum), Tsukuba, Japan,
July 15-19, 200
Group-theoretical construction of extended baryon operators
The design and implementation of large sets of spatially extended baryon
operators for use in lattice simulations are described. The operators are
constructed to maximize overlaps with the low-lying states of interest, while
minimizing the number of sources needed in computing the required quark
propagators.Comment: 3 pages, 3 tables, talk presented at Lattice2004(spectrum), Fermilab,
June 21-26, 200
The impact of Clinical Nurse Specialists on the decision making process in cancer multidisciplinary team meetings: A qualitative study
PURPOSE: There are well-documented barriers to nurse participation in cancer multidisciplinary team (MDT) meetings. This paper aims to identify the approaches used by Clinical Nurse Specialists (CNSs) in this setting to contribute during discussion, and to consider the impact of these approaches on the decision making process. In doing so it aims to highlight ways that CNSs can increase their influence, and enhance multidisciplinary engagement. METHODS: This study is based on analysis of observation data from 122 MDT meetings in gynaecology, haematology and skin cancer MDTs. Field notes were reviewed, identifying 58 cases where CNSs contributed to MDT discussion. Audio recordings of the relevant sections were then transcribed and analysed thematically. RESULTS: Five approaches were used by CNSs to contribute in MDT meetings: sharing information, asking questions, providing practical suggestions, framing and using humour. These approaches influenced three key intermediary processes identified during the analysis ('successful contributions'): prompting discussion, influencing a treatment plan and facilitating teamwork. CNSs contributed successfully in cases where medical factors (such as relapsed disease or complex comorbidities) or non-medical factors (such as strong patient preference), had the potential to impact on the ability of teams to deliver treatment. CONCLUSIONS: CNSs have an important role in cancer MDT meetings. By focusing on a subset of cases where CNSs contributed during MDT discussion, this study has provided an insight into approaches that can be adopted by CNSs to increase their influence on the decision making process, enabling teams to capitalise on their knowledge and expertise in MDT meetings
Baryonic sources using irreducible representations of the double-covered octahedral group
Irreducible representations (IRs) of the double-covered octahedral group are
used to construct lattice source and sink operators for three-quark baryons.
The goal is to achieve a good coupling to higher spin states as well as ground
states. Complete sets of local and nonlocal straight-link operators are
explicitly shown for isospin 1/2 and 3/2 baryons. The orthogonality relations
of the IR operators are confirmed in a quenched lattice simulation.Comment: Talk presented at Lattice2004(heavy), Fermilab, June 21-26, 2004, 3
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