3,075 research outputs found

    Social enterprises as hybrid organizations: a review and research agenda

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    The impacts of the global economic crisis of 2008, the intractable problems of persistent poverty and environmental change have focused attention on organizations that combine enterprise with an embedded social purpose. Scholarly interest in social enterprise (SE) has progressed beyond the early focus on definitions and context to investigate their management and performance. From a review of the SE literature, the authors identify hybridity, the pursuit of the dual mission of financial sustainability and social purpose, as the defining characteristic of SEs.They assess the impact of hybridity on the management of the SE mission, financial resource acquisition and human resource mobilization, and present a framework for understanding the tensions and trade-offs resulting from hybridity. By examining the influence of dual mission and conflicting institutional logics on SE management the authors suggest future research directions for theory development for SE and hybrid organizations more generally

    Social entrepreneurship: Entrepreneurship and social value creation

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    Social entrepreneurship has attracted attention from scholars, policy makers and practitioners in developed and developing countries around the world. Much of the early research was devoted to addressing definitional debates and contextual differences and only recently have scholars turned their attention to investigating the relationship between social value creation and opportunity identification and exploitation. The aim of the chapter is three fold. First, we review the rise to prominence of social entrepreneurship and the principal definitional and contextual debates. Second, we summarize the main research findings concerning social value creation and opportunity identification and exploitation. Finally, we identify ten critical topics for advancing social entrepreneurship knowledge and theory development

    The advantage of lefties in one-on-one sports

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    Left-handers comprise approximately 15% of professional tennis players, but only 11% of the general population. In boxing, baseball, fencing, table-tennis and specialist batting positions in cricket the contrast is even starker, with 30% or more of top players often being left-handed. In this paper we propose a model for identifying the advantage of being left-handed in one-on-one interactive sports (as well as the inherent skill of each player). We construct a Bayesian latent ability model in the spirit of the classic Glicko model but with the additional complication of having a latent factor, i.e. the advantage of left-handedness, that we need to estimate. Inference is further complicated by the truncated nature of data-sets that arise from only having data of the top players. We show how to infer the advantage of left-handedness when only the proportion of top left-handed players is available. We use this result to develop a simple dynamic model for inferring how the advantage of left-handedness varies through time. We also extend the model to cases where we have ranking or match-play data. We test these models on 2014 match-play data from top male professional tennis players, and the dynamic model on data from 1985 to 2016

    Multi-scale mechanical characterization of highly swollen photo-activated collagen hydrogels

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    Biological hydrogels have been increasingly sought after as wound dressings or scaffolds for regenerative medicine, owing to their inherent biofunctionality in biological environments. Especially in moist wound healing, the ideal material should absorb large amounts of wound exudate while remaining mechanically competent in situ. Despite their large hydration, however, current biological hydrogels still leave much to be desired in terms of mechanical properties in physiological conditions. To address this challenge, a multi-scale approach is presented for the synthetic design of cyto-compatible collagen hydrogels with tunable mechanical properties (from the nano- up to the macro-scale), uniquely high swelling ratios and retained (more than 70%) triple helical features. Type I collagen was covalently functionalized with three different monomers, i.e. 4-vinylbenzyl chloride, glycidyl methacrylate and methacrylic anhydride, respectively. Backbone rigidity, hydrogen-bonding capability and degree of functionalization (F: 16 ± 12–91 ± 7 mol%) of introduced moieties governed the structure–property relationships in resulting collagen networks, so that the swelling ratio (SR: 707 ± 51–1996 ± 182 wt%), bulk compressive modulus (Ec: 30 ± 7–168 ± 40 kPa) and atomic force microscopy elastic modulus (EAFM: 16 ± 2–387 ± 66 kPa) were readily adjusted. Because of their remarkably high swelling and mechanical properties, these tunable collagen hydrogels may be further exploited for the design of advanced dressings for chronic wound care

    The nascent ecology of social enterprise

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    Funder: Edmond de Rothschild FoundationsFunder: Isaac Newton Trust; doi: http://dx.doi.org/10.13039/501100004815Employing population ecology theory, we examine social enterprise population emergence in the United Kingdom after 2005 when a new organizational form for social enterprise was established. Our density dependence analysis of nearly seven thousand Community Interest Companies finds that survival is positively influenced by age and population densities of both other social enterprises and commercial organizations. Two specific patterns in population emergence are identified: social enterprise survival is more likely influenced by industry than age, a finding that we label the liability of specificity, and their survival benefits from the population density of commercial organizations but not nonprofit organizations, a finding that we label the hybrid-commercial benefit. Our research identifies the liability of specificity as a new concept in population ecology theory and the hybrid-commercial benefit as a contextual influence on social enterprise survival

    Second Order Perturbations in the Randall-Sundrum Infinite Brane-World Model

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    We discuss the non-linear gravitational interactions in the Randall-Sundrum single brane model. If we naively write down the 4-dimensional effective action integrating over the fifth dimension with the aid of the decomposition with respect to eigen modes of 4-dimensional d'Alembertian, the Kaluza-Klein mode coupling seems to be ill-defined. We carefully analyze second order perturbations of the gravitational field induced on the 3-brane under the assumption of the static and axial-symmetric 5-dimensional metric. It is shown that there remains no pathological feature in the Kaluza-Klein mode coupling after the summation over all different mass modes. Furthermore, the leading Kaluza-Klein corrections are shown to be sufficiently suppressed in comparison with the leading order term which is obtained by the zero mode truncation. We confirm that the 4-dimensional Einstein gravity is approximately recovered on the 3-brane up to second order perturbations.Comment: 15 pages, 2 figures, comment and reference added, typos correcte
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