82 research outputs found
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State fish and wildlife agency culture: Access points to leverage major change
Amid a time of unprecedented social-ecological change, professionals within and outside of the US wildlife conservation community have called for transformation of existing processes and structures to ensure that the benefits of wildlife conservation can be realized well into the future. Current momentum behind an initiative to help increase conservation relevancy among population segments that have historically been underserved by the conservation community is underway. Sustainable institutional change will not be realized, however, without attending to internal cultural change within the conservation community itself. Although elements of an ideal institution have been suggested, specific interventions related to institutional culture need deeper exploration. State fish and wildlife agencies—a primary organizational actor within the conservation community—play a central role in institutional transformation. Using a systems framework, this essay describes key leverage points for cultural change for which interventions could result in sustainable culture shifts. Five possible interventions are introduced to stimulate conversation among conservation practitioners seeking to initiate transformational change within their specific cultural contexts.
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Beam instrumentation for the RFQ injector at CRYRING
DOI:
10.1017/S000497271600041
Beam Instrumentation for CRYRINGESR
BACKGROUND: The disulfide-bonded region (DSR) of HIV-1 gp41 mediates association with gp120 and plays a role in transmission of receptor-induced conformational changes in gp120 to gp41 that activate membrane fusion function. In this study, forced viral evolution of a DSR mutant that sheds gp120 was employed to identify domains within gp120-gp41 that are functionally linked to the glycoprotein association site. RESULTS: The HIV-1AD8 mutant, W596L/K601D, was serially passaged in U87.CD4.CCR5 cells until replication was restored. Whereas the W596L mutation persisted throughout the cultures, a D601H pseudoreversion in the DSR partially restored cell-free virus infectivity and virion gp120-gp41 association, with further improvements to cell-free virus infectivity following a 2nd-site D674E mutation in the membrane-proximal external region (MPER) of gp41. In an independent culture, D601H appeared with a deletion in V4 (Thr-394-Trp-395) and a D674N substitution in the MPER, however this MPER mutation was inhibitory to W596L/K601H cell-free virus infectivity. While cell-free virus infectivity was not fully restored for the revertant genotypes, their cell-to-cell transmission approached the levels observed for WT. Interestingly, the functional boost associated with the addition of D674E to W596L/K601H was not observed for cell-cell fusion where the cell-surface expressed glycoproteins function independently of virion assembly. The W596L/K601H and W596L/K601H/D674E viruses exhibited greater sensitivity to neutralization by the broadly reactive MPER directed monoclonal antibodies, 2F5 and 4E10, indicating that the reverting mutations increase the availability of conserved neutralization epitopes in the MPER. CONCLUSIONS: The data indicate for the first time that functional crosstalk between the DSR and MPER operates in the context of assembled virions, with the Leu-596-His-601-Glu-674 combination optimizing viral spread via the cell-to-cell route. Our data also indicate that changes in the gp120-gp41 association site may increase the exposure of conserved MPER neutralization epitopes in virus
GO-GN conceptual frameworks guide
This collaboratively written book brings together insights from a range of researchers into their use of conceptual frameworks in studying open education. Also included is an overview of different approaches to understanding the role(s) of theories and conceptual frameworks in doctoral research. In addition to discussing the different ways that conceptual frameworks are used we provide a (selective) overview of a range of conceptual frameworks and examples of their use. The GO-GN Conceptual Frameworks Guide is intended for those working in doctoral research but accessible enough to be used by anyone interested in carrying out a research project.Librar
Measuring changes in self-concept: a qualitative evaluation of outcome questionnaires in people having acupuncture for their chronic health problems
BACKGROUND: Changes in self-concept are an important potential outcome for many interventions for people with long-term conditions. This study sought to identify and evaluate outcome questionnaires suitable for quantifying changes in self-concept in people with long-term conditions, in the context of treatment with acupuncture and Chinese medicine. METHODS: A literature search was followed by an evaluation of three questionnaires: The Wellbeing Questionnaire W-BQ12, the Patient Enablement Instrument (PEI), and the Arizona Integrative Outcome Scale (AIOS). A convenience sample of 23 people completed the questionnaires on two occasions and were interviewed about their experience and their questionnaire responses. All acupuncturists were interviewed. RESULTS: Changes in self-concept were common and emerged over time. The three questionnaires had different strengths and weaknesses in relation to measuring changes in self-concept. The generic AIOS had face validity and was sensitive to changes in self-concept over time, but it lacked specificity. The PEI was sensitive and specific in measuring these changes but had lower acceptability. The sensitivity of the W-BQ12 was affected by initial high scores (ceiling effect) and a shorter timescale but was acceptable and is suitable for repeated administration. The PEI and W-BQ12 questionnaires worked well in combination. CONCLUSION: Changes in self-concept are important outcomes of complex interventions for people with long-term illness and their measurement requires carefully evaluated tools and long-term follow-up. The literature review and the analysis of the strengths and weaknesses of the questionnaires is a resource for other researchers. The W-BQ12 and the PEI both proved useful for this population and a larger quantitative study is planned
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