94,923 research outputs found

    Delivering together for inclusive development : digital access to Information and knowledge for persons with disabilities

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    This report focuses on digital inclusion as it relates to four of the 17 Goals for the 2030 Sustainable Development Agenda: SDG 9 - Innovation, Industry, and Infrastructure, SDG 16 - Peace, Justice, and Strong Institutions, SDG 17 - Partnerships for the Goals, SDG 4 - Quality Education. For each of the goals, a number of major challenges and key recommendations are defined. Finally, general recommendations are given for improving global digital inclusion overall

    Tests and applications of self-consistent cranking in the interacting boson model

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    The self-consistent cranking method is tested by comparing the cranking calculations in the interacting boson model with the exact results obtained from the SU(3) and O(6) dynamical symmetries and from numerical diagonalization. The method is used to study the spin dependence of shape variables in the sdsd and sdgsdg boson models. When realistic sets of parameters are used, both models lead to similar results: axial shape is retained with increasing cranking frequency while fluctuations in the shape variable γ\gamma are slightly reduced.Comment: 9 pages, 3 ps figures, Revte

    Phase transitions in the sdgsdg interacting boson model

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    A geometric analysis of the sdgsdg interacting boson model is performed. A coherent-state is used in terms of three types of deformation: axial quadrupole (β2\beta_2), axial hexadecapole (β4\beta_4) and triaxial (γ2\gamma_2). The phase-transitional structure is established for a schematic sdgsdg hamiltonian which is intermediate between four dynamical symmetries of U(15), namely the spherical U(5)U(9){\rm U}(5)\otimes{\rm U}(9), the (prolate and oblate) deformed SU±(3){\rm SU}_\pm(3) and the γ2\gamma_2-soft SO(15) limits. For realistic choices of the hamiltonian parameters the resulting phase diagram has properties close to what is obtained in the sdsd version of the model and, in particular, no transition towards a stable triaxial shape is found.Comment: 19 pages, 5 figures, submitted to J. Phys.

    The impact of social protection and poverty elimination on global tuberculosis incidence: a statistical modelling analysis of Sustainable Development Goal 1.

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    BACKGROUND: The End TB Strategy and the Sustainable Development Goals (SDGs) are intimately linked by their common targets and approaches. SDG 1 aims to end extreme poverty and expand social protection coverage by 2030. Achievement of SDG 1 is likely to affect the tuberculosis epidemic through a range of pathways. We estimate the reduction in global tuberculosis incidence that could be obtained by reaching SDG 1. METHODS: We developed a conceptual framework linking key indicators of SDG 1 progress to tuberculosis incidence via well described risk factor pathways and populated it with data from the SDG data repository and the WHO tuberculosis database for 192 countries. Correlations and mediation analyses informed the strength of the association between the SDG 1 subtargets and tuberculosis incidence, resulting in a simplified framework for modelling. The simplified framework linked key indicators for SDG 1 directly to tuberculosis incidence. We applied an exponential decay model based on linear associations between SDG 1 indicators and tuberculosis incidence to estimate tuberculosis incidence in 2035. FINDINGS: Ending extreme poverty resulted in a reduction in global incidence of tuberculosis of 33·4% (95% credible interval 15·5-44·5) by 2035 and expanding social protection coverage resulted in a reduction in incidence of 76·1% (45·2-89·9) by 2035; both pathways together resulted in a reduction in incidence of 84·3% (54·7-94·9). INTERPRETATION: Full achievement of SDG 1 could have a substantial effect on the global burden of tuberculosis. Cross-sectoral approaches that promote poverty reduction and social protection expansion will be crucial complements to health interventions, accelerating progress towards the End TB targets. FUNDING: World Health Organization

    The phenolic complex in flaxseed

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    Flaxseed is the richest plant source of the lignan secoisolariciresinol diglucoside (SDG). In flaxseed, SDG exists in an oligomeric structure with 3-hydroxy-3-methyl glutaric acid (HMGA) forming a phenolic complex together with p-coumaric acid and ferulic acid glucosides and herbacetin diglucoside (HDG). Epidemiological and animal studies indicate protective effects of flaxseed and SDG towards hormone-dependent cancers and cardiovascular diseases, and reducing effect toward cholesterol levels in blood. Knowledge about the structural features and properties of the phenolic complex are required to further understand bioavailability, bioconversion and bioactivity of flaxseed lignans in humans and animals, the biosynthesis in flaxseed, as well as if it may affect technology and quality of food products containing flaxseed or the phenolic complex. A new fast and simple high-performance liquid chromatographic (HPLC) method was developed for analysing secoisolariciresinol diglucoside (SDG), p-coumaric acid glucoside and ferulic acid glucoside, based on direct hydrolysis of defatted flaxseed flour using alkali. Variations in SDG, p-coumaric acid glucoside and ferulic acid glucoside content were reported in flaxseed samples and bread products containing flaxseed. The composition and properties of flaxseed phenolic complex were studied by reversed-phase liquid chromatography and gel filtration fractionation. Results indicate that the phenolic glucosides exist in oligomers with variable molecular sizes. A complicated linkage pattern and/or possibly interactions with other components may contribute to the observed complexity. SDG and the phenolic complex showed similar hydrogen-donating abilities to ferulic acid but higher than α-tocopherol in the DPPH inhibition metod, suggesting that SDG was the only active antioxidant in the phenolic complex. Contradicting results were obtained on the effect of SDG on levels of Vitamin E and cholesterol in two rat studies

    On the Nature of the Strong Emission-Line Galaxies in Cluster Cl 0024+1654: Are Some the Progenitors of Low Mass Spheroidals?

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    We present new size, line ratio, and velocity width measurements for six strong emission-line galaxies in the galaxy cluster, Cl 0024+1654, at redshift z~0.4. The velocity widths from Keck spectra are all narrow (30<sigma<120 km/s), with three profiles showing double peaks. Four galaxies have low masses (M<10^{10} Mo). Whereas three galaxies were previously reported to be possible AGNs, none exhibit AGN-like emission line ratios or velocity widths. Two or three appear as very blue spirals with the remainder more akin to luminous H-II galaxies undergoing a strong burst of star formation. We propose that after the burst subsides, these galaxies will transform into quiescent dwarfs, and are thus progenitors of some cluster spheroidals (We adopt the nomenclature suggested by Kormendy & Bender (1994), i.e., low-density, dwarf ellipsoidal galaxies like NGC 205 are called `spheroidals' instead of `dwarf ellipticals') seen today.Comment: 14 pages + 2 figures + 1 table, LaTeX, Acc. for publ. in ApJL also available at http://www.ucolick.org/~deep/papers/papers.htm

    Workshop Report: Earth and Environmental Science for Sustainable Development (Dar es Salaam, September 2017)

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    This report describes the outcomes of a two-day interactive workshop in Dar es Salaam (Tanzania), conducted in September 2017. We gathered 17 delegates from 12 organisations in Tanzania to determine sustainable development priorities and consider the role of Earth and environmental science in addressing these. Delegates came from diverse disciplines (e.g., geology, agriculture, forestry, water management) and sectors (e.g., academia, civil society, commercial, government). Using the UN Sustainable Development Goals (SDGs) as a reference tool, participants identified primary development challenges and their research and data needs to help address these. Key themes included (i) sustainable land and water management, (ii) clean water and sanitation, and (iii) climate-smart agriculture, food security and nutrition. Participants co-designed a set of draft science-for-development projects relating to these themes. BGS are using this information, together with the results of additional workshop activities, to inform the development of collaborative science-for-development activities in eastern Africa as part of our commitment to Official Development Assistance (ODA) in the region. We will further develop specific project ideas, using information gathered at this workshop, with appropriate regional and international partners. Information from this workshop provides supporting evidence of expressed development need and stakeholder expertise in eastern Africa. This information will guide future project applications to the Global Challenges Research Fund, and other appropriate research and innovation funding sources. Key Results and Conclusions During the workshop, small group discussions and group voting generated a collective ranking of SDG priorities. Participants also reflected on where they believe Earth and environmental science can make the greatest contribution to development impact. These rankings were: Overall SDG ranking (eastern Africa) based on summing of small groups votes: 1. Quality Education (SDG 4) 2. Life on Land (SDG 15) 3. Industry/Innovation/Infrastructure (SDG 9) Role for Earth and environmental science rankings: 1. Clean Water and Sanitation (SDG 6) 2. Life on Land (SDG 15) 3. Climate Action (SDG 13) 4. Industry/Innovation/Infrastructure (SDG 9) Group discussions suggested that interconnectedness of SDGs and basic (immediate) development needs were likely to influence the prioritisation process. For example, participants noted that good health (SDG 3) was necessary to having decent work and economic growth (SDG 8). We used these rankings to establish three thematic working groups, with each tasked to identify specific challenges, research priorities, information needs and potential projects. Groups were: Sustainable land and water management. This group developed ideas relating to reducing land degradation, implementing and strengthening strategic environmental assessments, ensuring more integrated policy, and enhancing geo-ICT capacity. Clean water and sanitation. This group identified ideas around water pollution and the re-use and safe treatment of water, natural water quality, and data awareness and availability. Climate-smart agriculture, food security and nutrition. This group explored ways to improve post-harvest management of agricultural products, and improve land resource quality. Developing these activities will require effective science-for-development partnerships. Partnership characteristics of greatest importance to participants attending this Dar es Salaam workshop were (i) being treated as an equal by other members of the partnership, (ii) respectful dialogue between members of the partnership, (iii) access to training and capacity building, (iv) sharing of project outputs, and (v) access to funding/financial resources

    Closed N=2 Strings: Picture-Changing, Hidden Symmetries and SDG Hierarchy

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    We study the action of picture-changing and spectral flow operators on a ground ring of ghost number zero operators in the chiral BRST cohomology of the closed N=2 string and describe an infinite set of symmetry charges acting on physical states. The transformations of physical string states are compared with symmetries of self-dual gravity which is the effective field theory of the closed N=2 string. We derive all infinitesimal symmetries of the self-dual gravity equations in 2+2 dimensional spacetime and introduce an infinite hierarchy of commuting flows on the moduli space of self-dual metrics. The dependence on moduli parameters can be recovered by solving the equations of the SDG hierarchy associated with an infinite set of abelian symmetries generated recursively from translations. These non-local abelian symmetries are shown to coincide with the hidden abelian string symmetries responsible for the vanishing of most scattering amplitudes. Therefore, N=2 string theory "predicts" not only self-dual gravity but also the SDG hierarchy.Comment: 41 pages, no figure

    Progress on Drinking Water, Sanitation and Hygiene: 2017 Update and SDG Baselines

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    The JMP 2017 update report presents indicators and baseline estimates for the drinking water, sanitation and hygiene targets within the Sustainable Development Goals (SDGs). The report introduces the indicators of safely managed drinking water and sanitation services, which go beyond use of improved facilities, to include consideration of the quality of services provided. For the first time, hygiene estimates are reported for 70 countries
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