183 research outputs found

    Development Communication: Interpretations in Organizational Contexts

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    This study explores how organizational contexts guide and constrain development practitioners\u27 interpretations of development communication. The research focuses on questions surrounding the production of development communication, including: how practitioners understand and interpret development communication; and, how organizational contexts contribute,,to and constrain the production of development communication. An interpretive approach to organizational communication is used to build upon political-economic and systems approaches to the study of media industries and organizational behavior. Thirty-six members of international development organizations, including the United States Office of Population, Population Communication Services, United Nations Fund for Population Activities, International Planned Parenthood Federation Western Hemisphere Region, and Oxfam America, were interviewed in-depth about their perceptions of development communication (including their activity, their audience, and the role of communication in addressing that audience), and their organizational contexts (including inter-organizational dynamics with their donors, recipients and reference groups, as well as intra-organizational conditions, decision making procedures). such as history, structure and Respondents perceived development communication as a tool to inform, educate or persuade (role of communication) groups of individuals or society (audience) who suffer as a result of individual deficiencies or macro-structural inadequacies (problem organizational activity is addressing). Patterns of interpretations were connected with dynamics within the studied organizational contexts, which embodied particular systemic relations with other organizations in environments. The process by which meanings underlying development communication are produced shapes and is shaped by practitioners\u27 interpretations of development communication. These interpretations, in turn, are bounded by the dynamics created and perpetuated by individuals as they interact within organizational contexts

    Wearing shades in the bright future of digital media: Limitations of narratives of media power in Egyptian resistance

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    Political engagement means more than reliance on a single medium, but requires collective human action. In making this argument, I consider how the media landscape, along with social and political contexts, have contributed to this process of shifting political power in Egypt. This background contextualizes the limitations of a dominant Hollywood narrative in U.S. media, not only telling a reductive tale of hero, victim and villain, but also privileging the role of social media as an anthropomorphic heroic sidekick. Mediated communication can be valuable as a vehicle for mobilization and as a site for political contestation, but it is the access to the production and reception of knowledge that matters. In essence, the critical issue in political resistance is power, not technology

    An Evidence Review of Gender-Integrated Interventions in Reproductive and Maternal-Child Health

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    Evidence-based behavior change interventions addressing gender dynamics must be identified and disseminated to improve child health outcomes. Interventions were identified from systematic searches of the published literature and a web-based search (Google and implementer's websites). Studies were eligible if an intervention addressed gender dynamics (i.e., norms, unequal access to resources), measured relevant behavioral outcomes (e.g., family planning, antenatal care, nutrition), used at least a moderate evaluation design, and were implemented in low- or middle-income countries. Of the 23 interventions identified, 22 addressed reproductive and maternal-child health behaviors (e.g., birth spacing, antenatal care, breastfeeding) that improve child health. Eight interventions were accommodating (i.e., acknowledged, but did not seek to change gender dynamics), and 15 were transformative (i.e., sought to change gender dynamics). The majority of evaluations (n=12), including interventions that engaged men and women to modify gender norms, had mixed effects. Evidence was most compelling for empowerment approaches (i.e., participatory action for maternal-child health; increase educational and economic resources, and modify norms to reduce child marriage). Two empowerment approaches had sufficient evidence to warrant scaling-up. Research is needed to assess promising approaches, particularly those that engage men and women to modify gender norms around communication and decision making between spouses

    Habituation based synaptic plasticity and organismic learning in a quantum perovskite

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    A central characteristic of living beings is the ability to learn from and respond to their environment leading to habit formation and decision making. This behavior, known as habituation, is universal among all forms of life with a central nervous system, and is also observed in single-cell organisms that do not possess a brain. Here, we report the discovery of habituation-based plasticity utilizing a perovskite quantum system by dynamical modulation of electron localization. Microscopic mechanisms and pathways that enable this organismic collective charge-lattice interaction are elucidated by first-principles theory, synchrotron investigations, ab initio molecular dynamics simulations, and in situ environmental breathing studies. We implement a learning algorithm inspired by the conductance relaxation behavior of perovskites that naturally incorporates habituation, and demonstrate learning to forget: A key feature of animal and human brains. Incorporating this elementary skill in learning boosts the capability of neural computing in a sequential, dynamic environment.United States. Army Research Office (Grant W911NF-16-1-0289)United States. Air Force Office of Scientific Research (Grant FA9550-16-1-0159)United States. Army Research Office (Grant W911NF-16-1-0042

    BCL-3 expression promotes colorectal tumorigenesis through activation of AKT signalling

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    Objective Colorectal cancer remains the fourth most common cause of cancer-related mortality worldwide. Here we investigate the role of nuclear factor-?B (NF-?B) co-factor B-cell CLL/lymphoma 3 (BCL-3) in promoting colorectal tumour cell survival. Design Immunohistochemistry was carried out on 47 tumour samples and normal tissue from resection margins. The role of BCL-3/NF-?B complexes on cell growth was studied in vivo and in vitro using an siRNA approach and exogenous BCL-3 expression in colorectal adenoma and carcinoma cells. The question whether BCL-3 activated the AKT/protein kinase B (PKB) pathway in colorectal tumour cells was addressed by western blotting and confocal microscopy, and the ability of 5- aminosalicylic acid (5-ASA) to suppress BCL-3 expression was also investigated. Results We report increased BCL-3 expression in human colorectal cancers and demonstrate that BCL-3 expression promotes tumour cell survival in vitro and tumour growth in mouse xenografts in vivo, dependent on interaction with NF-?B p50 or p52 homodimers. We show that BCL-3 promotes cell survival under conditions relevant to the tumour microenvironment, protecting both colorectal adenoma and carcinoma cells from apoptosis via activation of the AKT survival pathway: AKT activation is mediated via both PI3K and mammalian target of rapamycin (mTOR) pathways, leading to phosphorylation of downstream targets GSK- 3 and FoxO1/3a. Treatment with 5-ASA suppressed BCL-3 expression in colorectal cancer cells. Conclusions Our study helps to unravel the mechanism by which BCL-3 is linked to poor prognosis in colorectal cancer; we suggest that targeting BCL-3 activity represents an exciting therapeutic opportunity potentially increasing the sensitivity of tumour cells to conventional therapy

    A participatory action research approach to strengthening health managers’ capacity at district level in Eastern Uganda

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    BACKGROUND: Many approaches to improving health managers’ capacity in poor countries, particularly those pursued by external agencies, employ non-participatory approaches and often seek to circumvent (rather than strengthen) weak public management structures. This limits opportunities for strengthening local health managers’ capacity, improving resource utilisation and enhancing service delivery. This study explored the contribution of a participatory action research approach to strengthening health managers’ capacity in Eastern Uganda. METHODS: This was a qualitative study that used open-ended key informant interviews, combined with review of meeting minutes and observations to collect data. Both inductive and deductive thematic analysis was undertaken. The Competing Values Framework of organisational management functions guided the deductive process of analysis and the interpretation of the findings. The framework builds on four earlier models of management and regards them as complementary rather than conflicting, and identifies four managers’ capacities (collaborate, create, compete and control) by categorising them along two axes, one contrasting flexibility versus control and the other internal versus external organisational focus. RESULTS: The findings indicate that the participatory action research approach enhanced health managers’ capacity to collaborate with others, be creative, attain goals and review progress. The enablers included expanded interaction spaces, encouragement of flexibility, empowerment of local managers, and the promotion of reflection and accountability. Tension and conflict across different management functions was apparent; for example, while there was a need to collaborate, maintaining control over processes was also needed. These tensions meant that managers needed to learn to simultaneously draw upon and use different capacities as reflected by the Competing Values Framework in order to maximise their effectiveness. CONCLUSIONS: Improved health manager capacity is essential if sustained improvements in health outcomes in lowincome countries are to be attained. The expansion of interaction spaces, encouragement of flexibility, empowerment of local managers, and the promotion of reflection and accountability were the key means by which participatory action research strengthened health managers’ capacity. The participatory approach to implementation therefore created opportunities to strengthen health managers’ capacity

    The Pathogenic Potential of Campylobacter concisus Strains Associated with Chronic Intestinal Diseases

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    Campylobacter concisus has garnered increasing attention due to its association with intestinal disease, thus, the pathogenic potential of strains isolated from different intestinal diseases was investigated. A method to isolate C. concisus was developed and the ability of eight strains from chronic and acute intestinal diseases to adhere to and invade intestinal epithelial cells was determined. Features associated with bacterial invasion were investigated using comparative genomic analyses and the effect of C. concisus on host protein expression was examined using proteomics. Our isolation method from intestinal biopsies resulted in the isolation of three C. concisus strains from children with Crohn's disease or chronic gastroenteritis. Four C. concisus strains from patients with chronic intestinal diseases can attach to and invade host cells using mechanisms such as chemoattraction to mucin, aggregation, flagellum-mediated attachment, “membrane ruffling”, cell penetration and damage. C. concisus strains isolated from patients with chronic intestinal diseases have significantly higher invasive potential than those from acute intestinal diseases. Investigation of the cause of this increased pathogenic potential revealed a plasmid to be responsible. 78 and 47 proteins were upregulated and downregulated in cells infected with C. concisus, respectively. Functional analysis of these proteins showed that C. concisus infection regulated processes related to interleukin-12 production, proteasome activation and NF-κB activation. Infection with all eight C. concisus strains resulted in host cells producing high levels of interleukin-12, however, only strains capable of invading host cells resulted in interferon-γ production as confirmed by ELISA. These findings considerably support the emergence of C. concisus as an intestinal pathogen, but more significantly, provide novel insights into the host immune response and an explanation for the heterogeneity observed in the outcome of C. concisus infection. Moreover, response to infection with invasive strains has substantial similarities to that observed in the inflamed mucosa of Crohn's disease patients

    The Early Royal Society and Visual Culture

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    Recent studies have fruitfully examined the intersection between early modern science and visual culture by elucidating the functions of images in shaping and disseminating scientific knowledge. Given its rich archival sources, it is possible to extend this line of research in the case of the Royal Society to an examination of attitudes towards images as artefacts –manufactured objects worth commissioning, collecting and studying. Drawing on existing scholarship and material from the Royal Society Archives, I discuss Fellows’ interests in prints, drawings, varnishes, colorants, images made out of unusual materials, and methods of identifying the painter from a painting. Knowledge of production processes of images was important to members of the Royal Society, not only as connoisseurs and collectors, but also as those interested in a Baconian mastery of material processes, including a “history of trades”. Their antiquarian interests led to discussion of painters’ styles, and they gradually developed a visual memorial to an institution through portraits and other visual records.AH/M001938/1 (AHRC
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