361 research outputs found

    Formal water rights in rural Tanzania: Deepening the dichotomy?

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    Water rights / Water law / Water scarcity / Water use / Water users’ associations / Irrigation water / Cost recovery

    Towards an approach for analysing external representations created during sensemaking using generative grammar

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    During sensemaking, users often create external representations to help them make sense of what they know, and what they need to know. In doing so, they necessarily adopt or construct some form of representational language using the tools at hand. By describing such languages implicit in representations we believe that we are better able to describe and differentiate what users do and better able to describe and differentiate interfaces that might support them. Drawing on approaches to the analysis of language, and in particular, Mann and Thompson’s Rhetorical Structure Theory, we analyse the representations that users create to expose their underlying ‘visual grammar’. We do this in the context of a user study involving evidential reasoning. Participants were asked to address an adapted version of IEEE VAST 2011 mini challenge 3 (interpret a potential terrorist plot implicit in a set of news reports). We show how our approach enables the unpacking of the heterogeneous and embedded nature of user-generated representations and allows us to show how visual grammars evolve and become more complex over time in response to evolving sensemaking needs

    Factors that impact on access to water and sanitation for older adults and people with disability in rural South Africa: An occupational justice perspective

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    Limited access to water and sanitation is a risk to health, dignity, and ability to engage in occupations. This article aims to: 1) discuss the current and historical factors affecting access to water and sanitation in rural South Africa, and 2) explore the occupational implications of water access, particularly for older adults and people with disability in rural South Africa. A literature review was carried out through searching JSTOR, Scopus, and MEDLINE databases and using framework analysis to interpret the retrieved documents. This paper also reports a thematic analysis of semi-structured interviews, conducted in 2012 in a rural area of South Africa. Environmental, political, social-economic and attitudinal factors were identified as impacting water access and occupation, in both the documentary analysis and the semi-structured interviews. Due to South Africa’s history, injustice has occurred in the forms of occupational apartheid and occupational deprivation. We argue that supply systems must enable people to easily access more water than is essential for survival, so that people can participate in meaningful and productive occupations. Therefore, access to water should be considered part of an occupational right. Recognising this right will be an integral step in ensuring that water supplies are improved to support better livelihoods, and to achieve economic and social empowerment, and quality of life for all, in line with many of the United Nations’ new Sustainable Development Goals

    Pluralitas Agama dalam Keluarga Jawa

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    Dalam masyarakat Jawa terdapat pemahaman dan pemaknaan sendiri terhadap agama yaitu â€agami ageming ajiâ€. Artinya apa pun agama yang dipeluk sama saja karena semua agama mengajarkan keselamatan. Oleh sebab itu menjadi sebuah fenomena menarik di kalangan masyarakat Jawa karena mereka cenderung lebih toleran dalam menyikapi perbedaaan dan keragaman beragama. Salah satu contoh masyarakat yang menghargai pluralitas agama adalah masyarakat Desa Getas Kaloran Temanggung. Tujuan penelitian ini adalah untuk menjelaskan tentang sejumlah keluarga yang dapat menerima pluralitas agama dan toleransi terhadap pluralitas agama dalam keluarga Jawa. Tulisan ini merupakan hasil penelitian yang menggunakan pendekatan deskriptif kualitatif. Subyek penelitian adalah masyarakat Desa Getas yang memiliki keragaman agama dalam keluarganya. Berdasarkan hasil penelitian dapat disimpulkan bahwa masyarakat Desa Getas dapat menerima pluralitas agama karena menurut mereka agama adalah urusan pribadi seseorang jadi tidak ada pihak yang dapat memaksakan suatu keyakinan kepada individu lain. Pluralitas agama tersebut tidak menimbulkan masalah berarti karena masyarakat memiliki derajat toleransi yang tinggi antar anggota keluarga, yang ditunjukkan melalui saling menghargai dan mengormati dan tidak mencampuri urusan keagamaan orang lain, serta saling membantu antar anggota keluarga untuk memperlancar kegiatan ibadah masing – masing. In Javanese community there is a specific principle on the meaning of religion, namely â€agami ageming ajiâ€. This pilosophy means whatever religion people believe, it doesn’t matter because they all teach salvation. This is an interesting phenomenon among the Javanese community because they tend to be tolerant in dealing with differences and diversity of religion that happen in one household. The objective of this article is to discuss the practices of religious tolerance found in a rural community of Getas, Kaloran, Temanggung Central Java. Techniques of data collection is done by interviews and observation. The study subjects were villagers of Getas, which has a diversity of religion in families. Based on the research results, it can be concluded that the villagers embrace a tradition of religious pluralism because they think religion is one’s personal affairs so that no party can impose a conviction for another individual. The plurality of religion does not cause significant problems because the public has a high degree of tolerance among family members, which is demonstrated through mutual respect and attitude not to interfere in religious affairs of others, and mutual help among family members to facilitate the worship activities of their relatives

    Spectroscopic survey of Kepler stars. I. HERMES/Mercator observations of A- and F-type stars

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    The Kepler space mission provided near-continuous and high-precision photometry of about 207 000 stars, which can be used for asteroseismology. However, for successful seismic modeling it is equally important to have accurate stellar physical parameters. Therefore, supplementary ground-based data are needed. We report the results of the analysis of high-resolution spectroscopic data of A- and F-type stars from the Kepler field, which were obtained with the HERMES spectrograph on the Mercator telescope. We determined spectral types, atmospheric parameters and chemical abundances for a sample of 117 stars. Hydrogen Balmer, Fe i, and Fe ii lines were used to derive effective temperatures, surface gravities, and microturbulent velocities. We determined chemical abundances and projected rotational velocities using a spectrum synthesis technique. The atmospheric parameters obtained were compared with those from the Kepler Input Catalogue (KIC), confirming that the KIC effective temperatures are underestimated for A stars. Effective temperatures calculated by spectral energy distribution fitting are in good agreement with those determined from the spectral line analysis. The analysed sample comprises stars with approximately solar chemical abundances, as well as chemically peculiar stars of the Am, Ap, and λ Boo types. The distribution of the projected rotational velocity, vsin i, is typical for A and F stars and ranges from 8 to about 280 km s−1, with a mean of 134 km s−1

    A Novel RNAi Lethality Rescue Screen to Identify Regulators of Adipogenesis

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    Adipogenesis, the differentiation of fibroblast-like mesenchymal stem cells into mature adipocytes, is tightly regulated by a complex cascade of transcription factors, including the nuclear receptor Peroxisome proliferator activator receptor γ (PPARγ). RNAi-mediated knock down libraries may present an atractive method for the identification of additional adipogenic factors. However, using in vitro adipogenesis model systems for high-throughput screening with siRNA libraries is limited since (i) differentiation is not homogeneous, but results in mixed cell populations, and (ii) the expression levels (and activity) of adipogenic regulators is highly dynamic during differentiation, indicating that the timing of RNAi-mediated knock down during differentiation may be extremely critical. Here we report a proof-of-principle for a novel RNAi screening method to identify regulators of adipogenesis that is based on lethality rescue rather than differentiation, using microRNA expression driven by a PPARγ responsive RNA polymerase II promoter. We validated this novel method through screening of a dedicated deubiquitinase knock down library, resulting in the identification of UCHL3 as an essential deubiquitinase in adipogenesis. This system therefore enables the identification of novel genes regulating PPARγ-mediated adipogenesis in a high-throughput setting

    Activation of the SPHK/S1P signalling pathway is coupled to muscarinic receptor-dependent regulation of peripheral airways

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    BACKGROUND: In peripheral airways, acetylcholine induces contraction via activation of muscarinic M2-and M3-receptor subtypes (M(2)R and M(3)R). Cholinergic hypersensitivity is associated with chronic obstructive pulmonary disease and asthma, and therefore the identification of muscarinic signaling pathways are of great therapeutic interest. A pathway that has been shown to be activated via MR and to increase [Ca(2+)](i )includes the activation of sphingosine kinases (SPHK) and the generation of the bioactive sphingolipid sphingosine 1-phosphate (S1P). Whether the SPHK/S1P signaling pathway is integrated in the muscarinic control of peripheral airways is not known. METHODS: To address this issue, we studied precision cut lung slices derived from FVB and M(2)R-KO and M(3)R-KO mice. RESULTS: In peripheral airways of FVB, wild-type, and MR-deficient mice, SPHK1 was mainly localized to smooth muscle. Muscarine induced a constriction in all investigated mouse strains which was reduced by inhibition of SPHK using D, L-threo-dihydrosphingosine (DHS) and N, N-dimethyl-sphingosine (DMS) but not by N-acetylsphingosine (N-AcS), a structurally related agent that does not affect SPHK function. The initial phase of constriction was nearly absent in peripheral airways of M(3)R-KO mice when SPHK was inhibited by DHS and DMS but was unaffected in M(2)R-KO mice. Quantitative RT-PCR revealed that the disruption of the M(2)R and M(3)R genes had no significant effect on the expression levels of the SPHK1-isoform in peripheral airways. CONCLUSION: These results demonstrate that the SPHK/S1P signaling pathway contributes to cholinergic constriction of murine peripheral airways. In addition, our data strongly suggest that SPHK is activated via the M(2)R. Given the important role of muscarinic mechanisms in pulmonary disease, these findings should be of considerable therapeutic relevance

    Opening the research agenda for selection of hot spots for human biomonitoring research in Belgium: a participatory research project

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    <p>Abstract</p> <p>Background</p> <p>In order to select priority hotspots for environment and health research in Flanders (Belgium), an open procedure was organized. Environment and health hotspots are strong polluting point sources with possible health effects for residents living in the vicinity of the hot spot. The selection procedure was part of the work of the Flemish Centre of Expertise for Environment and Health, which investigates the relation between environmental pollution and human health. The project is funded and steered by the Flemish government.</p> <p>Methods</p> <p>The involvement of other actors than merely experts is inspired by the 'analytical-deliberative' approach of the National Research Council in the United States and the extended peer community approach. These approaches stress the importance of involving different expert- and social perspectives in order to increase the knowledge base on complex issues. In the procedure used in the project a combination of expert and stakeholder input was essential. The final decision was supported by a multi-criteria analysis of expert assessment and stakeholder advice.</p> <p>Results</p> <p>The endeavour was challenging from the start because of the complicated ambition of including a diversity of actors, potential hotspots, concerns and assessment criteria, but nevertheless the procedure proved its value in both structuring and informing the decision-making process. Moreover the process gained the support of most actors participating in the process, even though the final selection could not satisfy all preferences.</p> <p>Conclusions</p> <p>Opening the research agenda exemplifies the value of inter- and transdisciplinary cooperation as well as the need for a well-structured and negotiated procedure that combines relevant factors and actors with pragmatism. The value of such a process also needs to prove itself in practice after the procedure has been completed: the tension between an ambition of openness on the one hand and a more closed attitude amongst experts on the other will continue to play a role even after closure.</p
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