329 research outputs found

    Communication, Community, and Democracy: Toward a Theory of the Communicatively-Integrated Community

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    For democracy to work, community is necessary. This argument is not obvious. If democracy simply consists in a sufficient number of individuals turning out to vote to generate legitimacy for governments, then the proposition doesn't necessarily hold. But historian Robert Wiebe (1995) argues that the essence of democracy, in America at least, is self-rule. I think this is true, but the definition of self-rule implicitly asks: what is the self that rules and how is it formed? The democratic self is composed of two separate but related bodies. The first are publics of citizens. The second are the communities in which they live. The public concerns the problem of what sort of rule should we have as democratic citizens; the community what kind of selves are needed as the agents of democracy. This essay is centrally concerned with the second half of the equation: how individuals and groups form democratic selves, or identities, and under what conditions of life. The answer is that they do so in communities, and, as I will argue, democratic groups are more likely to form in communities that are integrated through communication. But at least a few words about the publics of democracy are necessary before we begin this larger argument

    Observational bounds on the cosmic radiation density

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    We consider the inference of the cosmic radiation density, traditionally parameterised as the effective number of neutrino species N_eff, from precision cosmological data. Paying particular attention to systematic effects, notably scale-dependent biasing in the galaxy power spectrum, we find no evidence for a significant deviation of N_eff from the standard value of N_eff^0=3.046 in any combination of cosmological data sets, in contrast to some recent conclusions of other authors. The combination of all available data in the linear regime prefers, in the context of a ``vanilla+N_eff'' cosmological model, 1.1<N_eff<4.8 (95% C.L.) with a best-fit value of 2.6. Adding data at smaller scales, notably the Lyman-alpha forest, we find 2.2<N_eff<5.8 (95% C.L.) with 3.8 as the best fit. Inclusion of the Lyman-alpha data shifts the preferred N_eff upwards because the sigma_8 value derived from the SDSS Lyman-alpha data is inconsistent with that inferred from CMB. In an extended cosmological model that includes a nonzero mass for N_eff neutrino flavours, a running scalar spectral index and a w parameter for the dark energy, we find 0.8<N_eff<6.1 (95% C.L.) with 3.0 as the best fit.Comment: 23 pages, 3 figures, uses iopart.cls; v2: 1 new figure, references added, matches published versio

    The seasonality of tuberculosis, sunlight, vitamin D, and household crowding.

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    BACKGROUND: Unlike other respiratory infections, tuberculosis diagnoses increase in summer. We performed an ecological analysis of this paradoxical seasonality in a Peruvian shantytown over 4 years. METHODS: Tuberculosis symptom-onset and diagnosis dates were recorded for 852 patients. Their tuberculosis-exposed cohabitants were tested for tuberculosis infection with the tuberculin skin test (n = 1389) and QuantiFERON assay (n = 576) and vitamin D concentrations (n = 195) quantified from randomly selected cohabitants. Crowding was calculated for all tuberculosis-affected households and daily sunlight records obtained. RESULTS: Fifty-seven percent of vitamin D measurements revealed deficiency (<50 nmol/L). Risk of deficiency was increased 2.0-fold by female sex (P < .001) and 1.4-fold by winter (P < .05). During the weeks following peak crowding and trough sunlight, there was a midwinter peak in vitamin D deficiency (P < .02). Peak vitamin D deficiency was followed 6 weeks later by a late-winter peak in tuberculin skin test positivity and 12 weeks after that by an early-summer peak in QuantiFERON positivity (both P < .04). Twelve weeks after peak QuantiFERON positivity, there was a midsummer peak in tuberculosis symptom onset (P < .05) followed after 3 weeks by a late-summer peak in tuberculosis diagnoses (P < .001). CONCLUSIONS: The intervals from midwinter peak crowding and trough sunlight to sequential peaks in vitamin D deficiency, tuberculosis infection, symptom onset, and diagnosis may explain the enigmatic late-summer peak in tuberculosis

    News media use, talk networks, and anti-elitism across geographic location: evidence from Wisconsin

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    A certain social-political geography recurs across European and North American societies: As post-industrialization and mechanization of agriculture have disrupted economies, rural and nonmetropolitan areas are aging and declining in population, leading to widening political and cultural gaps between metropolitan and rural communities. Yet political communication research tends to focus on national or cross-national levels, often emphasizing networked digital media and an implicitly global information order. We contend that geographic place still provides a powerful grounding for individuals’ lifeworld experiences, identities, and orientations to political communications and politics. Focusing on the U.S. state of Wisconsin, and presenting data gathered in 2018, this study demonstrates significant, though often small, differences between geographic locations in terms of their patterns of media consumption, political talk, and anti-elite attitudes. Importantly, television news continues to play a major role in citizens’ repertoires across locations, suggesting we must continue to pay attention to this broadcast medium. Residents of more metropolitan communities consume significantly more national and international news from prestige sources such as the New York Times, and their talk networks are more cleanly sorted by partisanship. Running against common stereotypes of news media use, residents of small towns and rural areas consume no more conservative media than other citizens, even without controlling for partisanship. Our theoretical model and empirical results call for further attention to the intersections of place and politics in understanding news consumption behaviors and the meanings citizens draw from media content

    Engaging new migrants in infectious disease screening: a qualitative semi-structured interview study of UK migrant community health-care leads.

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    Migration to Europe - and in particular the UK - has risen dramatically in the past decades, with implications for public health services. Migrants have increased vulnerability to infectious diseases (70% of TB cases and 60% HIV cases are in migrants) and face multiple barriers to healthcare. There is currently considerable debate as to the optimum approach to infectious disease screening in this often hard-to-reach group, and an urgent need for innovative approaches. Little research has focused on the specific experience of new migrants, nor sought their views on ways forward. We undertook a qualitative semi-structured interview study of migrant community health-care leads representing dominant new migrant groups in London, UK, to explore their views around barriers to screening, acceptability of screening, and innovative approaches to screening for four key diseases (HIV, TB, hepatitis B, and hepatitis C). Participants unanimously agreed that current screening models are not perceived to be widely accessible to new migrant communities. Dominant barriers that discourage uptake of screening include disease-related stigma present in their own communities and services being perceived as non-migrant friendly. New migrants are likely to be disproportionately affected by these barriers, with implications for health status. Screening is certainly acceptable to new migrants, however, services need to be developed to become more community-based, proactive, and to work more closely with community organisations; findings that mirror the views of migrants and health-care providers in Europe and internationally. Awareness raising about the benefits of screening within new migrant communities is critical. One innovative approach proposed by participants is a community-based package of health screening combining all key diseases into one general health check-up, to lessen the associated stigma. Further research is needed to develop evidence-based community-focused screening models - drawing on models of best practice from other countries receiving high numbers of migrants

    Probing oscillations into sterile neutrinos with cosmology, astrophysics and experiments

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    We perform a thorough analysis of oscillation signals generated by one extra sterile neutrino, extending previous analyses done in simple limiting cases and including the effects of established oscillations among active neutrinos. We consider the following probes: solar, atmospheric, reactor and beam neutrinos, Big-Bang Nucleosynthesis (helium-4, deuterium), Cosmic Microwave Background, Large Scale Structure, supernovae, neutrinos from other astrophysical sources. We find no evidence for a sterile neutrino in present data, identify the still allowed regions, and study which future experiments can best probe them: sub-MeV solar experiments, more precise studies of CMB or BBN, future supernova explosions, etc. We discuss how the LSND hint is strongly disfavoured by the constraints of (standard) cosmology.Comment: 50 pages, many (14) figures. The text is divided into "results" and "technical details" sections. Final updated versio

    Selling issues with solutions: Igniting social intrapreneurship in for-profit organizations

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    We offer an explanation of the issue selling process when issues deviate from the dominant logic of organizations. Our main objective is to articulate the multiple ways in which socially oriented innovations can be legitimated in for-profit organizations through the work of bottom-up change agents, also known as social intrapreneurs. To unpack this multiplicity, we draw on both institutional theory and the framing perspective in social movements. Specifically, we propose how sellers may advance social issues with solutions by drawing on the logic composite of both organizations and selling targets. By providing an account of the social issue selling process in for-profit organizations, we consider how the nature of an issue shapes selling efforts when it diverges from the dominant logic, and we shed light on how the content choices of sellers relate to the meaning systems of organizations and targets

    Altered branching patterns of Purkinje cells in mouse model for cortical development disorder

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    Disrupted cortical cytoarchitecture in cerebellum is a typical pathology in reeler. Particularly interesting are structural problems at the cellular level: dendritic morphology has important functional implication in signal processing. Here we describe a combinatorial imaging method of synchrotron X-ray microtomography with Golgi staining, which can deliver 3-dimensional(3-D) micro-architectures of Purkinje cell(PC) dendrites, and give access to quantitative information in 3-D geometry. In reeler, we visualized in 3-D geometry the shape alterations of planar PC dendrites (i.e., abnormal 3-D arborization). Despite these alterations, the 3-D quantitative analysis of the branching patterns showed no significant changes of the 77 ± 8° branch angle, whereas the branch segment length strongly increased with large fluctuations, comparing to control. The 3-D fractal dimension of the PCs decreased from 1.723 to 1.254, indicating a significant reduction of dendritic complexity. This study provides insights into etiologies and further potential treatment options for lissencephaly and various neurodevelopmental disorders

    Swimming in a Sea of Shame: Incorporating Emotions into Explanations of Institutional Reproduction and Change

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    We theorize the role in institutional processes of what we call the shame nexus, a set of shame-related constructs: felt shame, systemic shame, sense of shame, and episodic shaming. As a discrete emotion, felt shame signals to a person that a social bond is at risk and catalyzes a fundamental motivation to preserve valued bonds. We conceptualize systemic shame as a form of disciplinary power, animated by persons’ sense of shame, a mechanism of ongoing intersubjective surveillance and self-regulation. We theorize how the duo of the sense of shame and systemic shame drives the self-regulation that underpins persons’ conformity to institutional prescriptions and institutional reproduction. We conceptualize episodic shaming as a form of juridical power used by institutional guardians to elicit renewed conformity and reassert institutional prescriptions. We also explain how episodic shaming may have unintended effects, including institutional disruption and recreation, when it triggers sensemaking among targets and observers that can lead to the reassessment of the appropriateness of institutional prescriptions or the value of social bonds. We link the shame nexus to three broad categories of institutional work
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