34,325 research outputs found
Suggestions For A Parametric Typology Of Dance
Dance and language are produced/performed by the body and governed by cognitive faculties. Yet regrettably little scholarship applies tools of formal analysis in one field to the other. This paper aims to enrich dialogue between the two fields. We introduce an approach to dance typology formed on analogy with the parametric theory of language analysis, useful in typologizing languages. This initial exploration paves the way for a physiological typology of dance, without reference to culture
The fifth most prevalent disease is being neglected by public health organisations
The progress towards reduction of global mortality has produced an epidemiological transition towards non-fatal diseases, which challenge the ability of the worldâs population to live in full health. Although traumatic dental injuries are not lethal, their treatment is more expensive (US$2 000 000â5 000 000 per million inhabitants) and time-consuming than that of all the other bodily injuries, making dental rehabilitation less likely among disadvantaged individuals. Since untreated traumatic dental injuries have a negative social, functional, and emotional effect in children and adolescents, differences in treatment of these injuries between children from different countries and social classes produce disparities in their quality of life
Global Retail Chains, International Trade and Developing Country Farmers:Evidence from Madagascar.
Global retail companies (âsupermarketsâ) have an increasing influence on developing countries, through foreign investments and/or through the imposition of their private standards. The impact on developing countries and poverty is often assessed as negative. In this paper we show the opposite, based on an analysis of primary data collected to measure the impact of supermarkets on small contract farmers in Madagascar, one of the poorest countries in the world. Almost 10,000 farmers in the Highlands of Madagascar produce vegetables for supermarkets in Europe. In this global supply chain, small farmersâ micro-contracts are combined with extensive farm assistance and supervision programs to fulfill complex quality requirements and phyto-sanitary standards of supermarkets. Small farmers that participate in these contracts have higher welfare, more income stability and shorter lean periods. We also find significant effects on improved technology adoption, better resource management and spillovers on the productivity of the staple crop rice. The small but emerging modern retail sector in Madagascar does not (yet) deliver these benefits as they do not (yet) request the same high standards for their supplies.
Reconstructing (super)trees from data sets with missing distances: Not all is lost
The wealth of phylogenetic information accumulated over many decades of biological research, coupled with recent technological advances in molecular sequence generation, present significant opportunities for researchers to investigate relationships across and within the kingdoms of life. However, to make best use of this data wealth, several problems must first be overcome. One key problem is finding effective strategies to deal with missing data. Here, we introduce Lasso, a novel heuristic approach for reconstructing rooted phylogenetic trees from distance matrices with missing values, for datasets where a molecular clock may be assumed. Contrary to other phylogenetic methods on partial datasets, Lasso possesses desirable properties such as its reconstructed trees being both unique and edge-weighted. These properties are achieved by Lasso restricting its leaf set to a large subset of all possible taxa, which in many practical situations is the entire taxa set. Furthermore, the Lasso approach is distance-based, rendering it very fast to run and suitable for datasets of all sizes, including large datasets such as those generated by modern Next Generation Sequencing technologies. To better understand the performance of Lasso, we assessed it by means of artificial and real biological datasets, showing its effectiveness in the presence of missing data. Furthermore, by formulating the supermatrix problem as a particular case of the missing data problem, we assessed Lasso's ability to reconstruct supertrees. We demonstrate that, although not specifically designed for such a purpose, Lasso performs better than or comparably with five leading supertree algorithms on a challenging biological data set. Finally, we make freely available a software implementation of Lasso so that researchers may, for the first time, perform both rooted tree and supertree reconstruction with branch lengths on their own partial datasets
Recommended from our members
Theoretical predictions suggest carbon dioxide phases III and VII are identical.
Solid carbon dioxide exhibits a rich phase diagram at high pressures. Metastable phase III is formed by compressing dry ice above âŒ10-12 GPa. Phase VII occurs at similar pressures but higher temperatures, and its stability region is disconnected from III on the phase diagram. Comparison of large-basis-set quasi-harmonic second-order MĂžller-Plesset perturbation theory calculations and experiment suggests that the long-accepted structure of phase III is problematic. The experimental phase III and VII structures both relax to the same phase VII structure. Furthermore, Raman spectra predicted for phase VII are in good agreement with those observed experimentally for both phase III and VII, while those for the purported phase III structure agree poorly with experimental observations. Crystal structure prediction is employed to search for other potential structures which might account for phase III, but none are found. Together, these results suggest that phases III and VII are likely identical
Should health professionals screen women for domestic violence? : systematic review
Objective To assess the evidence for the acceptability
and effectiveness of screening women for domestic
violence in healthcare settings.
Design Systematic review of published quantitative
studies.
Search strategy Three electronic databases (Medline,
Embase, and CINAHL) were searched for articles
published in the English language up to February
2001.
Included studies Surveys that elicited the attitudes of
women and health professionals on the screening of
women in health settings; comparative studies
conducted in healthcare settings that measured rates
of identification of domestic violence in the presence
and absence of screening; studies measuring
outcomes of interventions for women identified in
health settings who experience abuse from a male
partner or exÂpartner compared with abused women
not receiving an intervention.
Results 20 papers met the inclusion criteria. In four
surveys, 43Â85% of women respondents found
screening in healthcare settings acceptable. Two
surveys of health professionals' views found that two
thirds of physicians and almost half of emergency
department nurses were not in favour of screening. In
nine studies of screening compared with no
screening, most detected a greater proportion of
abused women identified by healthcare professionals.
Six studies of interventions used weak study designs
and gave inconsistent results. Other than increased
referral to outside agencies, little evidence exists for
changes in important outcomes such as decreased
exposure to violence. No studies measured quality of
life, mental health outcomes, or potential harm to
women from screening programmes.
Conclusion Although domestic violence is a common
problem with major health consequences for women,
implementation of screening programmes in
healthcare settings cannot be justified. Evidence of the
benefit of specific interventions and lack of harm from
screening is needed
Delayed kinetics of poliovirus RNA synthesis in a human cell line with reduced levels of hnRNP C proteins.
The hnRNP C heterotetramer [(C1(3))C2] binds RNA polymerase II transcripts in the nucleus, along with other proteins of the core hnRNP complex, and plays an important role in mRNA biogenesis and transport. Infection of HeLa cells with poliovirus causes hnRNP C to re-localize from the nucleus, where it is normally retained during interphase, to the cytoplasm. We have proposed that in the cytoplasm, the protein isoforms of hnRNP C participate in the recognition of viral specific RNAs by the poliovirus replication proteins and/or in the assembly of membrane-bound RNA replication complexes. In SK-OV-3 cells, which express reduced levels of hnRNP C compared to HeLa cells or 293 cells, the kinetics of poliovirus replication are delayed. hnRNP C is also re-localized from the nucleus to the cytoplasm in SK-OV-3 cells infected with poliovirus. Increased expression of hnRNP C in SK-OV-3 cells by transient transfection increases the rate of virus production and overall yield over that seen in mock-transfected cells. We propose that hnRNP C interacts with poliovirus RNA and replication proteins to increase the efficiency of viral genomic RNA synthesis
The Spitzer c2d Survey Of Nearby Dense Cores. VII. Chemistry And Dynamics In L43
We present results from the Spitzer Space Telescope and molecular line observations of nine species toward the dark cloud L43. The Spitzer images and molecular line maps suggest that it has a starless core and a Class I protostar evolving in the same environment. CO depletion is seen in both sources, and DCO(+) lines are stronger toward the starless core. With a goal of testing the chemical characteristics from pre- to protostellar stages, we adopt an evolutionary chemical model to calculate the molecular abundances and compare with our observations. Among the different model parameters we tested, the best-fit model suggests a longer total timescale at the pre-protostellar stage, but with faster evolution at the later steps with higher densities.NSF AST-0307250, AST0607793NASA NNX07AJ72GNational Research Foundation of Korea (NRF) government (MEST) 2009-0062865KOSEF R012007- 000-20336-0Astronom
- âŠ