101 research outputs found

    Advancing Qualitative Entrepreneurship Research: Leveraging Methodological Plurality for Achieving Scholarly Impact

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    This editorial aims to advance the use of qualitative research methods when studying entrepreneurship. First, it outlines four characteristics of the domain of entrepreneurship that qualitative research is uniquely placed to address. In studying these characteristics, we urge researchers to leverage the plurality of different qualitative approaches, including less conventional methods. Second, to help researchers develop high-level theoretical contributions, we point to multiple possible contributions, and highlight how such contributions can be developed through qualitative methods. Thus, we aim to broaden the types of contributions and forms that qualitative entrepreneurship research takes, in ways that move beyond prototypical inductive theory-building

    Advancing Qualitative Entrepreneurship Research: Leveraging Methodological Plurality for Achieving Scholarly Impact

    Get PDF
    This editorial aims to advance the use of qualitative research methods when studying entrepreneurship. First, it outlines four characteristics of the domain of entrepreneurship that qualitative research is uniquely placed to address. In studying these characteristics, we urge researchers to leverage the plurality of different qualitative approaches, including less conventional methods. Second, to help researchers develop high-level theoretical contributions, we point to multiple possible contributions, and highlight how such contributions can be developed through qualitative methods. Thus, we aim to broaden the types of contributions and forms that qualitative entrepreneurship research takes, in ways that move beyond prototypical inductive theory-building

    Advancing Qualitative Entrepreneurship Research: Leveraging Methodological Plurality for Achieving Scholarly Impact

    Get PDF
    This editorial aims to advance the use of qualitative research methods when studying entrepreneurship. First, it outlines four characteristics of the domain of entrepreneurship that qualitative research is uniquely placed to address. In studying these characteristics, we urge researchers to leverage the plurality of different qualitative approaches, including less conventional methods. Second, to help researchers develop high-level theoretical contributions, we point to multiple possible contributions, and highlight how such contributions can be developed through qualitative methods. Thus, we aim to broaden the types of contributions and forms that qualitative entrepreneurship research takes, in ways that move beyond prototypical inductive theory-building

    Advancing Qualitative Entrepreneurship Research:Leveraging Methodological Plurality for Achieving Scholarly Impact

    Get PDF
    This editorial aims to advance the use of qualitative research methods when studying entrepreneurship. First, it outlines four characteristics of the domain of entrepreneurship that qualitative research is uniquely placed to address. In studying these characteristics, we urge researchers to leverage the plurality of different qualitative approaches, including less conventional methods. Second, to help researchers develop high-level theoretical contributions, we point to multiple possible contributions, and highlight how such contributions can be developed through qualitative methods. Thus, we aim to broaden the types of contributions and forms that qualitative entrepreneurship research takes, in ways that move beyond prototypical inductive theory-building

    Specific targeting of IL-1β activity to CD8+ T cells allows for safe use as a vaccine adjuvant

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    Annual administration and reformulation of influenza vaccines is required for protection against seasonal infections. However, the induction of strong and long-lasting T cells is critical to reach broad and potentially lifelong antiviral immunity. The NLRP3 inflammasome and its product interleukin-1 beta (IL-1 beta) are pivotal mediators of cellular immune responses to influenza, yet, overactivation of these systems leads to side effects, which hamper clinical applications. Here, we present a bypass around these toxicities by targeting the activity of IL-1 beta to CD8(+)T cells. Using this approach, we demonstrate safe inclusion of IL-1 beta as an adjuvant in vaccination strategies, leading to full protection of mice against a high influenza virus challenge dose by raising potent T cell responses. In conclusion, this paper proposes a class of IL-1 beta-based vaccine adjuvants and also provides further insight in the mechanics of cellular immune responses driven by IL-1 beta

    Adaptive Management of Bull Trout Populations in the Lemhi Basin

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    The bull trout Salvelinus confluentus, a stream-living salmonid distributed in drainages of the northwestern United States, is listed as threatened under the Endangered Species Act because of rangewide declines. One proposed recovery action is the reconnection of tributaries in the Lemhi Basin. Past water use policies in this core area disconnected headwater spawning sites from downstream habitat and have led to the loss of migratory life history forms. We developed an adaptive management framework to analyze which types of streams should be prioritized for reconnection under a proposed Habitat Conservation Plan. We developed a Stochastic Dynamic Program that identified optimal policies over time under four different assumptions about the nature of the migratory behavior and the effects of brook trout Salvelinus fontinalis on subpopulations of bull trout. In general, given the current state of the system and the uncertainties about the dynamics, the optimal policy would be to connect streams that are currently occupied by bull trout. We also estimated the value of information as the difference between absolute certainty about which of our four assumptions were correct, and a model averaged optimization assuming no knowledge. Overall there is little to be gained by learning about the dynamics of the system in its current state, although in other parts of the state space reducing uncertainties about the system would be very valuable. We also conducted a sensitivity analysis; the optimal decision at the current state does not change even when parameter values are changed up to 75% of the baseline values. Overall, the exercise demonstrates that it is possible to apply adaptive management principles to threatened and endangered species, but logistical and data availability constraints make detailed analyses difficult

    Sustained platelet-sparing effect of weekly low dose paclitaxel allows effective, tolerable delivery of extended dose dense weekly carboplatin in platinum resistant/refractory epithelial ovarian cancer

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    Background: Platinum agents have shown demonstrable activity in the treatment of patients with platinum resistant, recurrent ovarian cancer when delivered in a "dose-dense" fashion. However, the development of thrombocytopenia limits the weekly administration of carboplatin to no greater than AUC 2. Paclitaxel has a well-described platelet sparing effect however its use to explicitly provide thromboprotection in the context of dose dense carboplatin has not been explored. Methods: We treated seven patients with platinum resistant ovarian cancer who had previously received paclitaxel or who had developed significant peripheral neuropathy precluding the use of further full dose weekly paclitaxel. Results: We were able to deliver carboplatin AUC 3 and paclitaxel 20 mg/m(2) with no thrombocytopenia or worsening of neuropathic side-effects, and with good activity. Conclusions: We conclude that this regimen may be feasible and active, and could be formally developed as a "platinum-focussed dose-dense scaffold" into which targeted therapies that reverse platinum resistance can be incorporated, and merits further evaluation

    Online writing about positive life experiences reduces depression and perceived stress reactivity in socially inhibited individuals

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    Therapeutic writing can enhance psychological and physical health. Recent studies have suggested that these kinds of interventions can be effective when delivered online. The present study investigated whether positive emotional writing online can influence psychological and physical health in individuals reporting high levels of negative affectivity, who are most likely to benefit from psychological intervention (N = 72, Mage = 28.5, SDage = 8.7), and further, to investigate the potential moderating role of social inhibition. Participants completed self-report measures of physical symptoms, perceived stress, perceived stress reactivity, depression and generalised anxiety, before completing either i) positive emotional writing, or ii) a non-emotive control writing task on an online portal, for 20 minutes per day over three consecutive days. State anxiety was measured immediately after each writing session, and self-report questionnaires were again administered four weeks post-writing. Socially inhibited individuals exhibited significant reductions in depression and perceived stress reactivity four weeks following positive emotional writing, relative to writing about a neutral topic. The present study supports the efficacy of online therapeutic writing in individuals who, due to their socially inhibited nature, are most likely to benefit from online interventions which avoid interaction with a therapist or other clients

    Long Distance Movements and Disjunct Spatial Use of Harbor Seals (Phoca vitulina) in the Inland Waters of the Pacific Northwest

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    BACKGROUND: Worldwide, adult harbor seals (Phoca vitulina) typically limit their movements and activity to <50 km from their primary haul-out site. As a result, the ecological impact of harbor seals is viewed as limited to relatively small spatial scales. Harbor seals in the Pacific Northwest are believed to remain <30 km from their primary haul-out site, one of several contributing factors to the current stock designation. However, movement patterns within the region are not well understood because previous studies have used radio-telemetry, which has range limitations. Our objective was to use satellite-telemetry to determine the regional spatial scale of movements. METHODOLOGY/PRINCIPAL FINDINGS: Satellite tags were deployed on 20 adult seals (n=16 males and 4 females) from two rocky reefs and a mudflat-bay during April-May 2007. Standard filtering algorithms were used to remove outliers, resulting in an average (± SD) of 693 (± 377) locations per seal over 110 (± 32) days. A particle filter was implemented to interpolate locations temporally and decrease erroneous locations on land. Minimum over-water distances were calculated between filtered locations and each seal's capture site to show movement of seals over time relative to their capture site, and we estimated utilization distributions from kernel density analysis to reflect spatial use. Eight males moved >100 km from their capture site at least once, two of which traveled round trip to and from the Pacific coast, a total distance >400 km. Disjunct spatial use patterns observed provide new insight into general harbor seal behavior. CONCLUSIONS/SIGNIFICANCE: Long-distance movements and disjunct spatial use of adult harbor seals have not been reported for the study region and are rare worldwide in such a large proportion of tagged individuals. Thus, the ecological influence of individual seals may reach farther than previously assumed
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