3,737 research outputs found

    Introducing a spectrum of moral evaluation: integrating organizational stigmatization and moral legitimacy

    Get PDF
    Audiences frequently change how they evaluate organizations, and these judgments often have a moral basis. For example, audiences may shift their evaluation from stigmatization to legitimacy or vice versa. These radical shifts in audience evaluation can have a major impact on organizations, yet organization theory struggles to account for them. We offer a solution to this problem by proposing a spectrum of moral evaluation that situates key moral judgments relative to each other. Our core argument is that integrating stigmatization and moral legitimacy into a broader spectrum of moral evaluation provides organization theorists with a much-needed toolkit to explore the consequential normative transformations often experienced by contemporary organizations. Specifically, it allows for a graded conception of moral evaluation, connects concepts – stigma and legitimacy – that are often considered in isolation, and offers opportunities for theoretical cross-fertilization

    The art of the pivot: how new ventures manage identification relationships with stakeholders as they change direction

    Get PDF
    Many new ventures have to pivot – radically transform what they are about – because their original approach has failed. However, pivoting risks disrupting relationships with key stakeholders, such as user communities, who identify with ventures. Stakeholders may respond by withdrawing support and starving ventures of the resources needed to thrive. This can pose an existential threat to ventures, yet it is unclear how they can manage this problem. To explore this important phenomenon, we conduct a qualitative process study of The Impossible Project, a photography venture which encountered significant resistance from its user community as it pivoted from an analog focus to an analog-digital positioning. We develop a process model of stakeholder identification management that reveals how ventures can use identification reset work to defuse tensions with stakeholders whose identification with the venture is threatened. A core finding is that ventures can remove the affective hostility of stakeholders and rebuild connections with many of them by exposing their struggles, thus creating a bond focused around these shared experiences. We offer contributions to scholarship on identification management, user community identification, and pivoting.ESRC 116293

    Age-dependent differences in human brain activity using a face- and location-matching task: An fMRI study

    Get PDF
    Purpose: To evaluate the differences of cortical activation patterns in young and elderly healthy subjects for object and spatial visual processing using a face- and location-matching task. Materials and Methods: We performed a face- and a location-matching task in 15 young (mean age: 28 +/- 9 years) and 19 elderly (mean age: 71 +/- 6 years) subjects. Each experiment consisted of 7 blocks alternating between activation and control condition. For face matching, the subjects had to indicate whether two displayed faces were identical or different. For location matching, the subjects had to press a button whenever two objects had an identical position. For control condition, we used a perception task with abstract images. Functional imaging was performed on a 1.5-tesla scanner using an EPI sequence. Results: In the face-matching task, the young subjects showed bilateral (right 1 left) activation in the occipito-temporal pathway (occipital gyrus, inferior and middle temporal gyrus). Predominantly right hemispheric activations were found in the fusiform gyrus, the right dorsolateral prefrontal cortex (inferior and middle frontal gyrus) and the superior parietal gyrus. In the elderly subjects, the activated areas in the right fronto-lateral cortex increased. An additional activated area could be found in the medial frontal gyrus (right > left). In the location-matching task, young subjects presented increased bilateral (right > left) activation in the superior parietal lobe and precuneus compared with face matching. The activations in the occipito-temporal pathway, in the right fronto-lateral cortex and the fusiform gyrus were similar to the activations found in the face-matching task. In the elderly subjects, we detected similar activation patterns compared to the young subjects with additional activations in the medial frontal gyrus. Conclusion: Activation patterns for object-based and spatial visual processing were established in the young and elderly healthy subjects. Differences between the elderly and young subjects could be evaluated, especially by using a face-matching task. Copyright (c) 2007 S. Karger AG, Basel

    Proteome-based plasma biomarkers for Alzheimer's disease

    Get PDF
    Alzheimer's disease is a common and devastating disease for which there is no readily available biomarker to aid diagnosis or to monitor disease progression. Biomarkers have been sought in CSF but no previous study has used two-dimensional gel electrophoresis coupled with mass spectrometry to seek biomarkers in peripheral tissue. We performed a case-control study of plasma using this proteomics approach to identify proteins that differ in the disease state relative to aged controls. For discovery-phase proteomics analysis, 50 people with Alzheimer's dementia were recruited through secondary services and 50 normal elderly controls through primary care. For validation purposes a total of 511 subjects with Alzheimer's disease and other neurodegenerative diseases and normal elderly controls were examined. Image analysis of the protein distribution of the gels alone identifies disease cases with 56% sensitivity and 80% specificity. Mass spectrometric analysis of the changes observed in two-dimensional electrophoresis identified a number of proteins previously implicated in the disease pathology, including complement factor H (CFH) precursor and α-2-macroglobulin (α- 2M). Using semi-quantitative immunoblotting, the elevation of CFH and α- 2M was shown to be specific for Alzheimer's disease and to correlate with disease severity although alternative assays would be necessary to improve sensitivity and specificity. These findings suggest that blood may be a rich source for biomarkers of Alzheimer's disease and that CFH, together with other proteins such as α- 2M may be a specific markers of this illness. © 2006 The Author(s).link_to_subscribed_fulltex

    Training teachers for the multimedia age: developing teacher expertise to enhance online learner interaction and collaboration

    Get PDF
    This article considers the skills that enable teachers to foster interaction and collaboration in online language learning. Drawing on Hampel and Stickler’s (2005) skills pyramid for online language learning and teaching, it presents the pre-service and in-service training programme that associate lecturers in the Department of Languages at the Open University undergo in the context of teaching languages with the help of online communication tools. Two projects are presented that shed more light on the expertise required to teach languages in virtual learning environments. The first project highlights the skills that are needed to teach in a complex online environment; the second one, a teacher training study, aimed to examine distance teachers’ experience of facilitating online group work, identify development needs, try out the potential of specific asynchronous and synchronous tools to support collaborative learning and trial possible development activities. The paper concludes by describing the kind of training programme that tutors require in order to acquire the skills identified

    Neutrino Masses and Mixing one Decade from Now

    Get PDF
    We review the status of neutrino masses and mixings in the light of the solar and atmospheric neutrino data. The result from the LSND experiment is also considered. We discuss the present knowledge and the expected sensitivity to the neutrino mixing parameters in the simplest schemes proposed to reconcile these data some of which include a light sterile neutrino in addition to the three standard ones.Comment: 16 pages Latex file using elsart.sty. Seven postscript figures included. Talk given at the ICFA/ECFA Workshop "Neutrino Factories based on Muon Storage Rings, nu-FACT99", Lyon, July 1999. Typo in Eq. 8 correcte

    Ground state properties of heavy alkali halides

    Full text link
    We extend previous work on alkali halides by calculations for the heavy-atom species RbF, RbCl, LiBr, NaBr, KBr, RbBr, LiI, NaI, KI, and RbI. Relativistic effects are included by means of energy-consistent pseudopotentials, correlations are treated at the coupled-cluster level. A striking deficiency of the Hartree-Fock approach are lattice constants deviating by up to 7.5 % from experimental values which is reduced to a maximum error of 2.4 % by taking into account electron correlation. Besides, we provide ab-initio data for in-crystal polarizabilities and van der Waals coefficients.Comment: accepted by Phys. Rev.

    Complete results for five years of GNO solar neutrino observations

    Get PDF
    We report the complete GNO solar neutrino results for the measuring periods GNO III, GNO II, and GNO I. The result for GNO III (last 15 solar runs) is [54.3 + 9.9 - 9.3 (stat.)+- 2.3 (syst.)] SNU (1 sigma) or [54.3 + 10.2 - 9.6 (incl. syst.)] SNU (1 sigma) with errors combined. The GNO experiment is now terminated after altogether 58 solar exposure runs that were performed between May 20, 1998 and April 9, 2003. The combined result for GNO (I+II+III) is [62.9 + 5.5 - 5.3 (stat.) +- 2.5 (syst.)] SNU (1 sigma) or [62.9 + 6.0 - 5.9] SNU (1 sigma) with errors combined in quadrature. Overall, gallium based solar observations at LNGS (first in GALLEX, later in GNO) lasted from May 14, 1991 through April 9, 2003. The joint result from 123 runs in GNO and GALLEX is [69.3 +- 5.5 (incl. syst.)] SNU (1 sigma). The distribution of the individual run results is consistent with the hypothesis of a neutrino flux that is constant in time. Implications from the data in particle- and astrophysics are reiterated.Comment: 22 pages incl. 9 Figures and 8 Tables. to appear in: Physics Letters B (accepted April 13, 2005) PACS: 26.65.+t ; 14.60.P
    • …
    corecore