120 research outputs found

    Justifying health IT investments: a process model of framing practices and reputational value

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    Despite important research contributions on the financial and operational dimensions of information technology (IT) value, justifying health IT (HIT) investments remains a difficult and enduring issue for IT managers. Recent work has expanded our understanding of HIT value, by focusing on the initial resource allocation stage, and through conceptualizations of value across multiple dimensions. Building on these developments, we adopt a performative perspective to examine the research question of how practitioners justify early stage HIT investments, with a focus on reputational value. We explored this question through a comparative field study of two hospital organizations in the English National Health Service (NHS). We found that practitioners' temporally orientated framing practices matter in justifying HIT investments, enacting different possibilities for reputational value. We develop a process model to explain these dynamics and highlight the mutability of reputational value, which can lead to different possibilities for restoring, enhancing, or maintaining reputation. We conclude by discussing the implications for justifying HIT investments.Stavros was supported by a scholarship from the Economic and Social Research Council (Grant Number: 1491536). Eivor Oborn was supported by the National Institute for Health Research (NIHR) Collaborations for Leadership in Applied Health Research and Care West Midlands

    Ab initio study of the phase diagram of epitaxial BaTiO3

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    Using a combination of first-principles and effective-Hamiltonian approaches, we map out the structure of BaTiO3 under epitaxial constraints applicable to growth on perovskite substrates. We obtain a phase diagram in temperature and misfit strain that is qualitatively different from that reported by Pertsev et al. [Phys. Rev. Lett. 80, 1988 (1998)], who based their results on an empirical thermodynamic potential with parameters fitted at temperatures in the vicinity of the bulk phase transitions. In particular, we find a region of `r phase' at low temperature where Pertsev et al. have reported an `ac phase'. We expect our results to be relevant to thin epitaxial films of BaTiO3 at low temperatures and experimentally-achievable strains.Comment: 4 pages, with 4 postscript figures embedded. Uses REVTEX and epsf macros. Also available at http://www.physics.rutgers.edu/~dhv/preprints/od_epi/index.htm

    Containing the Not-Invented-Here Syndrome in external knowledge absorption and open innovation: The role of indirect countermeasures

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    This paper builds new theory and provides supporting evidence to contain the Not-Invented-Here Syndrome (NIHS) – a persistent decision-making error arising from an attitude-based bias against external knowledge. Conceptually, we draw on the 4i framework of organizational learning to develop a novel process perspective on NIHS. This allows us not only to unpack how and where NIHS impedes organizational learning, but also to identify the key requirements for effective NIHS countermeasures. Importantly, countermeasures fall into two categories: those that seek to change the negative attitude directly (direct NIHS countermeasures) and those that seek to attenuate the behavioral impact of negative attitudes without addressing the attitudes as such (indirect NIHS countermeasures). While the evidence base on direct NIHS countermeasures has grown over the last decade, indirect NIHS countermeasures have received little research attention. To address this gap, we adopt a mixed methods research design composed of two complementary empirical studies – the first qualitative and the second quantitative. Study 1 explores the prevalence of distinct NIHS countermeasures in collaborative R&D practice. Based on 32 interviews and three focus group meetings with R&D employees, we find that a broad array of primarily direct NIHS countermeasures is employed in R&D practice. Study 2 addresses the scarcity of scholarly and managerial insights on indirect NIHS countermeasures by testing the effectiveness of perspective taking as a debiasing technique to contain negative attitudes at the level of the individual. Based on quantitative survey data from 565 global R&D projects, it provides empirical evidence not only for the prevalence and negative effects of NIHS on project success as mediated by external knowledge absorption, but also for the effectiveness of perspective taking as an exemplary indirect NIHS countermeasure

    Towards a first principles description of phonons in Ni50_{50}Pt50_{50} disordered alloys: the role of relaxation

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    Using a combination of density-functional perturbation theory and the itinerant coherent potential approximation, we study the effects of atomic relaxation on the inelastic incoherent neutron scattering cross sections of disordered Ni50_{50}Pt50_{50} alloys. We build on previous work, where empirical force constants were adjusted {\it ad hoc} to agree with experiment. After first relaxing all structural parameters within the local-density approximation for ordered NiPt compounds, density-functional perturbation theory is then used to compute phonon spectra, densities of states, and the force constants. The resulting nearest-neighbor force constants are first compared to those of other ordered structures of different stoichiometry, and then used to generate the inelastic scattering cross sections within the itinerant coherent potential approximation. We find that structural relaxation substantially affects the computed force constants and resulting inelastic cross sections, and that the effect is much more pronounced in random alloys than in ordered alloys.Comment: 8 pages, 3 eps figures, uses revtex

    Efficient decellularization of equine tendon with preserved biomechanical properties and cytocompatibility for human tendon surgery indications.

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    Chronic and acute tendon injuries are frequent afflictions, for which treatment is often long and unsatisfactory. When facing extended injuries, matrices and scaffolds with sufficient biomechanical properties are required for surgical repair and could additionally serve as supports for cellular therapies to improve healing. In this study, protocols of either commonly used detergents only (SDS 1%, Triton 1%, TBP 1%, and Tween-20 1%) or a combination of freeze/thaw (F/T) cycles with decellularization agents (NaCl 1M, ddH <sub>2</sub> O) were evaluated for the decellularization of horse equine superficial digital flexor tendon (SDFT) for hand flexor or extensor tendon reconstruction. Decellularization efficiency was assessed microscopically by histological staining (HE, DAPI) and DNA quantification. Macroscopical structure and biomechanical integrity of the tendon matrices were further assessed by gross observation, histological staining (SR), and mechanical testing (ultimate strain and stress, Young's modulus, energy to failure) for select protocols. Decellularization with hypertonic NaCl 1M in association with F/T cycles produced the most robust tendon matrices, which were nontoxic after 10 days for subsequent recellularization with human fetal progenitor tendon cells (hFPTs). This standardized protocol uses a less aggressive decellularization agent than current practice, which allows subsequent reseeding with allogenic cells, therefore making them very suitable and bioengineered tendon matrices for human tendon reconstruction in the clinic

    Psychophysiology-based QoE assessment : a survey

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    We present a survey of psychophysiology-based assessment for quality of experience (QoE) in advanced multimedia technologies. We provide a classification of methods relevant to QoE and describe related psychological processes, experimental design considerations, and signal analysis techniques. We summarize multimodal techniques and discuss several important aspects of psychophysiology-based QoE assessment, including the synergies with psychophysical assessment and the need for standardized experimental design. This survey is not considered to be exhaustive but serves as a guideline for those interested to further explore this emerging field of research

    How IT investments help hospitals gain and sustain reputation in the media: the role of signaling and framing

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    This is the author accepted manuscript. The final version is available from INFORMS via the DOI in this recordHow can information technology (IT) help hospitals gain and sustain reputation in the media? Combining signaling theory and technology frames, we examine if, how, and to what extent IT investments over time shape three facets of reputation: generalized favorability, being known, and being known for something. In accessing healthcare services, most patients are unable to assess a hospital’s quality of care directly. Faced with such information asymmetries, patients tend to consider a hospital’s reputation in the media when making care decisions. Indeed, journalists are well positioned to detect even the weaker quality signals – among which are state-of-the-art IT – that a hospital emits. As information intermediaries, journalists aggregate and interpret IT-related signals against the backdrop of their technology frames, that reflect their expectations of how a modern hospital IT should look. Perceived congruence between their IT-related expectations and observations on the ground is likely to translate into less critical writing about a hospital. We test our theorizing based on a comprehensive panel dataset of 152 English hospital organizations spanning five consecutive years of IT investments and subsequent changes in media reputation as reflected in 175,973 articles in English newspapers. We find that investments in IT staff increase the “being known” facet of reputation as evidenced in the volume of media coverage. Investments in IT equipment, in contrast, positively affect a hospital’s general favorability as mirrored in the tenor of its media coverage. Our econometric analysis as well as our complementary content analysis of newspaper articles and follow up interviews with journalists allow us to attribute this effect primarily to more visible IT equipment investments that prompt journalists to write less negatively about a hospital. These findings suggest that investments in IT equipment can buffer hospitals from negative press, thereby helping them to gain and maintain a strong reputation in the media

    How IT investments help hospitals gain and sustain reputation in the media: the role of signaling and framing

    Get PDF
    This is the author accepted manuscript. The final version is available from INFORMS via the DOI in this recordHow can information technology (IT) help hospitals gain and sustain reputation in the media? Combining signaling theory and technology frames, we examine if, how, and to what extent IT investments over time shape three facets of reputation: generalized favorability, being known, and being known for something. In accessing healthcare services, most patients are unable to assess a hospital’s quality of care directly. Faced with such information asymmetries, patients tend to consider a hospital’s reputation in the media when making care decisions. Indeed, journalists are well positioned to detect even the weaker quality signals – among which are state-of-the-art IT – that a hospital emits. As information intermediaries, journalists aggregate and interpret IT-related signals against the backdrop of their technology frames, that reflect their expectations of how a modern hospital IT should look. Perceived congruence between their IT-related expectations and observations on the ground is likely to translate into less critical writing about a hospital. We test our theorizing based on a comprehensive panel dataset of 152 English hospital organizations spanning five consecutive years of IT investments and subsequent changes in media reputation as reflected in 175,973 articles in English newspapers. We find that investments in IT staff increase the “being known” facet of reputation as evidenced in the volume of media coverage. Investments in IT equipment, in contrast, positively affect a hospital’s general favorability as mirrored in the tenor of its media coverage. Our econometric analysis as well as our complementary content analysis of newspaper articles and follow up interviews with journalists allow us to attribute this effect primarily to more visible IT equipment investments that prompt journalists to write less negatively about a hospital. These findings suggest that investments in IT equipment can buffer hospitals from negative press, thereby helping them to gain and maintain a strong reputation in the media
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