Youth and digital technology in Jamaica

There is great potential for digital media to address some of the problems faced by young people in Jamaica today, finds Paula Laurel Jackson. Paula is an independent researcher with a focus on creativity, peer-to-peer learning and digital media. As a result of her research with youth, she created a skill and knowledge-sharing platform for kids and her most recent work explores youth and childhood experiences to digital media in the Caribbean

Finding Our Way through Phenotypes

Despite a large and multifaceted effort to understand the vast landscape of phenotypic data, their current form inhibits productive data analysis. The lack of a community-wide, consensus-based, human- and machine-interpretable language for describing phenotypes and their genomic and environmental contexts is perhaps the most pressing scientific bottleneck to integration across many key fields in biology, including genomics, systems biology, development, medicine, evolution, ecology, and systematics. Here we survey the current phenomics landscape, including data resources and handling, and the progress that has been made to accurately capture relevant data descriptions for phenotypes. We present an example of the kind of integration across domains that computable phenotypes would enable, and we call upon the broader biology community, publishers, and relevant funding agencies to support efforts to surmount today's data barriers and facilitate analytical reproducibility

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Effect of remote ischaemic conditioning on clinical outcomes in patients with acute myocardial infarction (CONDI-2/ERIC-PPCI): a single-blind randomised controlled trial.

BACKGROUND: Remote ischaemic conditioning with transient ischaemia and reperfusion applied to the arm has been shown to reduce myocardial infarct size in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI). We investigated whether remote ischaemic conditioning could reduce the incidence of cardiac death and hospitalisation for heart failure at 12 months. METHODS: We did an international investigator-initiated, prospective, single-blind, randomised controlled trial (CONDI-2/ERIC-PPCI) at 33 centres across the UK, Denmark, Spain, and Serbia. Patients (age >18 years) with suspected STEMI and who were eligible for PPCI were randomly allocated (1:1, stratified by centre with a permuted block method) to receive standard treatment (including a sham simulated remote ischaemic conditioning intervention at UK sites only) or remote ischaemic conditioning treatment (intermittent ischaemia and reperfusion applied to the arm through four cycles of 5-min inflation and 5-min deflation of an automated cuff device) before PPCI. Investigators responsible for data collection and outcome assessment were masked to treatment allocation. The primary combined endpoint was cardiac death or hospitalisation for heart failure at 12 months in the intention-to-treat population. This trial is registered with ClinicalTrials.gov (NCT02342522) and is completed. FINDINGS: Between Nov 6, 2013, and March 31, 2018, 5401 patients were randomly allocated to either the control group (n=2701) or the remote ischaemic conditioning group (n=2700). After exclusion of patients upon hospital arrival or loss to follow-up, 2569 patients in the control group and 2546 in the intervention group were included in the intention-to-treat analysis. At 12 months post-PPCI, the Kaplan-Meier-estimated frequencies of cardiac death or hospitalisation for heart failure (the primary endpoint) were 220 (8·6%) patients in the control group and 239 (9·4%) in the remote ischaemic conditioning group (hazard ratio 1·10 [95% CI 0·91-1·32], p=0·32 for intervention versus control). No important unexpected adverse events or side effects of remote ischaemic conditioning were observed. INTERPRETATION: Remote ischaemic conditioning does not improve clinical outcomes (cardiac death or hospitalisation for heart failure) at 12 months in patients with STEMI undergoing PPCI. FUNDING: British Heart Foundation, University College London Hospitals/University College London Biomedical Research Centre, Danish Innovation Foundation, Novo Nordisk Foundation, TrygFonden

Secondary school pupils, conceptions of music in and out of school : conforming or conflicting meanings

This thesis explores the various musical conceptions of contemporary secondary pupils. Today, musical production and consumption are rapidly increasing and dominating the lives of most young people. At the same time, music educators are challenged with the continuing unpopularity of music in the classroom. Despite the inclusive framework upon which the National Curriculum is based, music in schools remains meaningless to a number of pupils. While efforts have been made to understand the various relationships that pupils have with music, there is a need to ground this knowledge within the subjective views and perceptions of the pupils. \ud Inspired by a combination of approaches (the pupil voice, phenomenography, constructivist-interpretivist), this research aims to provide a contemporary empirical exploration of pupils' relationship to music. Phenomenography upholds that individual pupils' conceptions of particular school subjects can inform educators about the teaching and learning strategies that we should develop. This research builds critically upon that position, in order to map, compare and contrast the various conceptions that pupils hold towards music. It furthermore sets out to gain insight into the pupils' present musical desires and needs by asking them to construct their ideal curriculum for music. The study explored the views of eightyseven pupils from six schools across England, through a series of in-depth interviews held within the school site. From this larger sample, data from thirty-four pupils were selected for detailed analysis and presentation in this thesis. \ud One of the main claims which this thesis argues is that school music's popularity is dependent on the degree to which pupils' own musical meanings are incorporated into the classroom. Findings suggest that the pupils' conceptions of music comprise six categories, each of which relate to the use and value it serves in their lives. I refer to these conceptions as their musical meanings. It was also found that whilst the pupils' conceptions of school music do not relate to their musical meanings, their ideal curriculum for music acted as a gateway within which their musical meanings were offered access.\ud This thesis aims to contribute to the extant literature by providing a contemporary empirical basis through which to critically explore the musical conceptions of young people in relation to education. It aims to suggest a new path for discovery in music education, opening the door to further investigation. \u

How to discover branching phenotypes?

<p>(Bottom panel) Phenotype data exhibiting various forms of branchiness are not easily discerned from diverse natural language descriptions. (A) Bee hairs are different from most other insect hairs in that they are plumose, which facilitates pollen collection. (B) A mutant of <i>Drosophila melanogaster</i> exhibits forked bristles, due to a variation in <i>mical</i>. (C) In zebrafish larvae (<i>Danio rerio</i>), angiogenesis begins with vessels branching. (D) Plant trichomes take on many forms, including trifurcation. (Top) Phenotypes involving some type of “branched” are easily recovered when they are represented with ontologies. In a semantic graph, free text descriptions are converted into phenotype statements involving an anatomy term from animal or plant ontologies <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Haendel1" target="_blank">[56]</a>,<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Cooper1" target="_blank">[118]</a> and a quality term from a quality ontology <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Gkoutos1" target="_blank">[106]</a>, connected by a logical expression (“inheres_in some”). Anatomy (purple) and quality (green) terms (ontology IDs beneath) relate phenotype statements from different species by virtue of the logic inherent in the ontologies, e.g., plumose, bifurcated, branched, and tripartite are all subtypes of “branched.” Image credits: bumble bee with pollen by Thomas Bresson, seta with pollen by István Mikó, <i>Arabidopsis</i> plants with hair-like structures (trichomes) by Annkatrin Rose, <i>Drosophila</i> photo by John Tann, <i>Drosophila</i> bristles redrawn from <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Hung1" target="_blank">[119]</a>, scanning electron micrograph of <i>Arabidopsis</i> trichome by István Mikó, zebrafish embryos by MichianaSTEM, zebrafish blood vessels from <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Alvarez1" target="_blank">[120]</a>. Figure assembled by Anya Broverman-Wray.</p

Phenotypes shared across biology.

<p>Phenotype data are relevant to many different domains, but they are currently isolated in data “silos.” Research from a broad array of seemingly disconnected domains, as outlined here, can be dramatically accelerated with a computable data store. (<b>A</b>) <b>Domains</b>: Diverse fields such as evolutionary biology, human disease and medicine, and climate change relate to phenotypes. (<b>B</b>) <b>Phenotypes</b>: insects, vertebrates, plants, and even forests all have features that are branched in some way, but they are described using different terms. For a computer to discover this, the phenotypes must be annotated with unique identifiers from ontologies that are logically linked. Under “shape” in the PATO quality ontology <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Gkoutos1" target="_blank">[106]</a>, “branchiness” is an encompassing parent term with subtypes “branched” and “increased branchiness.” From left to right, top layer, insects, vertebrates and plants have species that demonstrate phenotypes for which the genetic basis is not known. Often their companion model species, however, have experimental genetic work that is relevant to proposing candidate genes and gene networks. Insects (1): An evolutionary novelty in bees (top layer) is the presence of branched setae used for pollen collection. Nothing is known about the genetic basis of this feature. One clue to the origin of this evolutionary feature comes from studies of <i>Drosophila</i> (bottom layer), where <i>Mical</i> overexpression in unbranched wild-type bristles generates a branched morphology <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Hung1" target="_blank">[119]</a>. Mical directly links semaphorins and their plexin receptors to the precise control of actin filament dynamics <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Hung1" target="_blank">[119]</a>. Vertebrates (2): In humans, aberrant angiogenesis, including excessive blood vessel branching (top layer), is one of the six central hallmarks of cancer <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Hanahan1" target="_blank">[121]</a>. Candidate genes have been identified using data from model organisms. In zebrafish (middle layer), studies of the control of sprouting in blood vessel development show that signaling via semaphorins <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Yazdani1" target="_blank">[122]</a> and their plexin receptors is required for proper abundance and distribution <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Gu1" target="_blank">[123]</a>; disruption of <i>plxnd1</i> results in increased branching <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Alvarez1" target="_blank">[120]</a>,<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Zygmunt1" target="_blank">[124]</a>,<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-TorresVazquez1" target="_blank">[125]</a>. In mouse (bottom layer), branching of salivary glands is dependent on semaphorin signaling <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Chung1" target="_blank">[126]</a>, as is the branching of various other epithelial organs <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Korostylev1" target="_blank">[127]</a>. Plants (3): The uppermost canopy of trees of the rainforest (top layer) undergo a marked increase in branching associated with climate change <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Niinemets1" target="_blank">[128]</a>. Nothing is known about the genetic basis of this feature. The branching of plant trichomes (bottom layer), tiny outgrowths with a variety of functions including seed dispersal, has been studied in the model <i>Arabidopsis thaliana.</i> Branching occurs in association with many MYB-domain genes <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Serna1" target="_blank">[129]</a>, transcription factors that are found in both plants and animals <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Rosinski1" target="_blank">[130]</a>. (<b>C</b>) <b>Environment</b>: Diverse input from the environment influences organismal phenotype. (<b>D</b>) <b>Genes</b>: At the genetic level, previously unknown associations with various types of “branchiness” between insects and vertebrates are here made to possibly a common core or network of genes (the semaphorin-plexin signaling network). No association between genes associated with plant branching (Myb transcription factors) and animal branching is obvious from the literature. Image credit: Anya Broverman-Wray.</p

Finding phenotypes.

<p>The rich legacy of research in the life sciences includes a wealth of phenotype data contained in many sources, for millions of extinct and extant species. Some important sources of phenotypes date from more than 250 years ago <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-AristotleBalme1" target="_blank">[74]</a>–<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Darwin1" target="_blank">[77]</a>. With very few exceptions, phenotype data are not computationally accessible <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.1002033#pbio.1002033-Ramrez2" target="_blank">[78]</a>.</p><p>Finding phenotypes.</p