Contrasting strategies in the teaching of a foreign language grammar and their effects

PhD ThesisAt the centre of this thesis is the question whether the grammar of a foreign language is more effectively delivered to the learner by implicit or by explicit means. The researcher has explored the question, which is essentially one concerning teaching method, in an action research project which conceptualises the essential contrast as that concerning the presence or absence of explicit summaries of grammar met by pupils first in action. The project has spanned the three years of a GCSE course of study in French, leading to the relevant examination in the High School where she works as Head of the Modern Languages Department. This action research has been placed as an empirical enquiry of the method-related hypothesis (conveniently embodied in the recent National Curriculum subject advice) in perspective with a study of the history of Modern Languages teaching from its early times to the present day. The researcher's interest in pursuing the research at both of these levels arose from the following needs: 1. her personal need to take stock, through reflection (ie. research), of her own position and involvement in Modern Languages teaching, after a lengthy career which has witnessed frequent changes in subject design resulting from the pertinacious dissatisfaction towards the teaching methods used and the courses offered to learners, articulated yet again, currently, in the terms of the National Curriculum's subject plan; 2. her acknowledgement of the increasing desirability for classroom teachers of Modern Languages to investigate the teaching methods which each time of change imposes upon them for use in their practice, as is again the case now, as the latest National Curriculum policies assert their influence. The researcher was a lone participant in her research for the majority of its design and run. The historical research was a journey which she made alone and applied alone in the form of the 'Review Of The Literature' as the background to her action research. The action research itself evolved as a two-instalment project, in its first phase incorporating a broad departmental representation of pupil and teacher participants, and in the second phase featuring only the researcher and the two GCSE examination classes for which she was personally responsible between the years 1991 and 1994. This practical exercise intended to set local insights in a wider perspective and to identify aspects which might have more general significance. The action research took the format of a longitudinal study, which focused upon the question of the advantages or disadvantages attaching to either explicit or implicit grammar teaching at various stages of the participant pupils' GCSE course. The aim was to observe effects of the broadly distinct teaching strategies, made contrastive by the presence or absence of explicit grammar-summaries delivered in English (as a concession agreed in the National Curriculum Non-Statutory Guidance to the policy outlined above). Data were gathered on both classroom processes and learning outcomes at various points, including final GCSE scores. Lessons and discussions were recorded and analysed, as were also regularly administered questionnaires. The pupils' MFL learning was closely and consistently monitored; their and their teachers' reactions were also considered and taken into account. All of the information which was accessed via such channels as these was collected by the researcher and entered systematically into her research diaries, of which she had 1 8 at the close of her three year action research project, namely 6 per academic year, therefore. These and some 55 filled audio cassettes became the principal material legacy of the practical investigation from which the thesis emerged. The research brought results. On the one hand, the historical study and the broader related reading provided the desired rationale on Modern Languages practice and the tenacious problem associated with teaching methods and the place of a grammatical agenda in particular. The historical MFL teaching tradition was illuminated as the matrix of the contemporary developments. On the other hand, the action research concluded its contrastive study of (implicit and explicit grammar) teaching methods by disclosing a perspective on the relative importance and value of the grammar-summary principle which had been investigated as a case study in her local departmental setting and in the GCSE context. The hypothesis that grammar summary conveyed in the native language might have made a significant difference to enhance the learners' performance was not substantiated. Finally, the evolving practical research disclosed a number of associated themes suitable for further research to benefit the work done in Modern Languages classrooms, especially in relation to the issues of methodology

Barriers and facilitators to the implementation of the advanced nurse practitioner role in primary care settings: a scoping review

Background: Workload and workforce issues in primary care are key drivers for the growing international trend to expand nursing roles. Advanced nurse practitioners are increasingly being appointed to take on activities and roles traditionally carried out by doctors. Successful implementation of any new role within multidisciplinary teams is complex and time-consuming, therefore it is important to understand the factors that may hinder or support implementation of the advanced nurse practitioner role in primary care settings. Objectives: To identify, appraise and synthesise the barriers and facilitators that impact implementation of advanced practitioner roles in primary care settings. Methods: A scoping review conducted using the Arksey and O’Malley (2005) framework and reported in accordance with PRISMA-ScR. Eight databases (Cochrane Library, Health Business Elite, Kings Fund Library, HMIC, Medline, CINAHL, SCOPUS and Web of Science) were searched to identify studies published in English between 2002 and 2017. Study selection and methodological assessment were conducted by two independent reviewers. A pre-piloted extraction form was used to extract the following data: study characteristics, context, participants and information describing the advanced nurse practitioner role. Deductive coding for barriers and facilitators was undertaken using a modified Yorkshire Contributory Framework. We used inductive coding for barriers or facilitators that could not be classified using pre-defined codes. Disagreements were addressed through discussion. Descriptive data was tabulated within evidence tables, and key findings for barriers and facilitators were brought together within a narrative synthesis based on the volume of evidence. Findings: Systematic searching identified 5976 potential records, 2852 abstracts were screened, and 122 full texts were retrieved. Fifty-four studies (reported across 76 publications) met the selection criteria. Half of the studies (n=27) were conducted in North America (n=27), and 25/54 employed a qualitative design. The advanced nurse practitioner role was diverse, working across the lifespan and with different patient groups. However, there was little agreement about the level of autonomy, or what constituted everyday activities. Team factors were the most frequently reported barrier and facilitator. Individual factors, lines of responsibility and ‘other’ factors (i.e. funding), were also frequently reported barriers. Facilitators included individual factors, supervision and leadership and ‘other’ factors (i.e. funding, planning for role integration). Conclusion: Building collaborative relationships with other healthcare professionals and negotiating the role are critical to the success of the implementation of the advanced nurse practitioner role. Team consensus about the role and how it integrates into the wider team is also essential

Protocol for a systematic review of the effects of schools and school-environment interventions on health: evidence mapping and syntheses

Background: Schools may have important effects on students' and staff's health. Rather than treating schools merely as sites for health education, 'school-environment' interventions treat schools as settings which influence health. Evidence concerning the effects of such interventions has not been recently synthesised. Methods/design: Systematic review aiming to map and synthesise evidence on what theories and conceptual frameworks are most commonly used to inform school-environment interventions or explain school-level influences on health; what effects school-environment interventions have on health/health inequalities; how feasible and acceptable are school-environment interventions; what effects other school-level factors have on health; and through what processes school-level influences affect health. We will examine interventions aiming to promote health by modifying schools' physical, social or cultural environment via actions focused on school policies and practices relating to education, pastoral care and other aspects of schools beyond merely providing health education. Participants are staff and students age 4-18 years. We will review published research unrestricted by language, year or source. Searching will involve electronic databases including Embase, ERIC, PubMed, PsycInfo and Social Science Citation Index using natural-language phrases plus reference/citation checking. Stage 1 will map studies descriptively by focus and methods. Stage 2 will involve additional inclusion criteria, quality assessment and data extraction undertaken by two reviewers in parallel. Evidence will be synthesised narratively and statistically where appropriate (undertaking subgroup analyses and meta-regression and where no significant heterogeneity of effect sizes is found, pooling these to calculate a final effect size). Discussion: We anticipate: finding a large number of studies missed by previous reviews; that non-intervention studies of school effects examine a greater breadth of determinants than are addressed by intervention studies; and that intervention effect estimates are greater than for school-based health curriculum interventions without school-environment components

Multiple novel prostate cancer susceptibility signals identified by fine-mapping of known risk loci among Europeans

Genome-wide association studies (GWAS) have identified numerous common prostate cancer (PrCa) susceptibility loci. We have fine-mapped 64 GWAS regions known at the conclusion of the iCOGS study using large-scale genotyping and imputation in 25 723 PrCa cases and 26 274 controls of European ancestry. We detected evidence for multiple independent signals at 16 regions, 12 of which contained additional newly identified significant associations. A single signal comprising a spectrum of correlated variation was observed at 39 regions; 35 of which are now described by a novel more significantly associated lead SNP, while the originally reported variant remained as the lead SNP only in 4 regions. We also confirmed two association signals in Europeans that had been previously reported only in East-Asian GWAS. Based on statistical evidence and linkage disequilibrium (LD) structure, we have curated and narrowed down the list of the most likely candidate causal variants for each region. Functional annotation using data from ENCODE filtered for PrCa cell lines and eQTL analysis demonstrated significant enrichment for overlap with bio-features within this set. By incorporating the novel risk variants identified here alongside the refined data for existing association signals, we estimate that these loci now explain ∼38.9% of the familial relative risk of PrCa, an 8.9% improvement over the previously reported GWAS tag SNPs. This suggests that a significant fraction of the heritability of PrCa may have been hidden during the discovery phase of GWAS, in particular due to the presence of multiple independent signals within the same regio

Effect of Hydrocortisone on Mortality and Organ Support in Patients With Severe COVID-19: The REMAP-CAP COVID-19 Corticosteroid Domain Randomized Clinical Trial.

Importance: Evidence regarding corticosteroid use for severe coronavirus disease 2019 (COVID-19) is limited. Objective: To determine whether hydrocortisone improves outcome for patients with severe COVID-19. Design, Setting, and Participants: An ongoing adaptive platform trial testing multiple interventions within multiple therapeutic domains, for example, antiviral agents, corticosteroids, or immunoglobulin. Between March 9 and June 17, 2020, 614 adult patients with suspected or confirmed COVID-19 were enrolled and randomized within at least 1 domain following admission to an intensive care unit (ICU) for respiratory or cardiovascular organ support at 121 sites in 8 countries. Of these, 403 were randomized to open-label interventions within the corticosteroid domain. The domain was halted after results from another trial were released. Follow-up ended August 12, 2020. Interventions: The corticosteroid domain randomized participants to a fixed 7-day course of intravenous hydrocortisone (50 mg or 100 mg every 6 hours) (n = 143), a shock-dependent course (50 mg every 6 hours when shock was clinically evident) (n = 152), or no hydrocortisone (n = 108). Main Outcomes and Measures: The primary end point was organ support-free days (days alive and free of ICU-based respiratory or cardiovascular support) within 21 days, where patients who died were assigned -1 day. The primary analysis was a bayesian cumulative logistic model that included all patients enrolled with severe COVID-19, adjusting for age, sex, site, region, time, assignment to interventions within other domains, and domain and intervention eligibility. Superiority was defined as the posterior probability of an odds ratio greater than 1 (threshold for trial conclusion of superiority >99%). Results: After excluding 19 participants who withdrew consent, there were 384 patients (mean age, 60 years; 29% female) randomized to the fixed-dose (n = 137), shock-dependent (n = 146), and no (n = 101) hydrocortisone groups; 379 (99%) completed the study and were included in the analysis. The mean age for the 3 groups ranged between 59.5 and 60.4 years; most patients were male (range, 70.6%-71.5%); mean body mass index ranged between 29.7 and 30.9; and patients receiving mechanical ventilation ranged between 50.0% and 63.5%. For the fixed-dose, shock-dependent, and no hydrocortisone groups, respectively, the median organ support-free days were 0 (IQR, -1 to 15), 0 (IQR, -1 to 13), and 0 (-1 to 11) days (composed of 30%, 26%, and 33% mortality rates and 11.5, 9.5, and 6 median organ support-free days among survivors). The median adjusted odds ratio and bayesian probability of superiority were 1.43 (95% credible interval, 0.91-2.27) and 93% for fixed-dose hydrocortisone, respectively, and were 1.22 (95% credible interval, 0.76-1.94) and 80% for shock-dependent hydrocortisone compared with no hydrocortisone. Serious adverse events were reported in 4 (3%), 5 (3%), and 1 (1%) patients in the fixed-dose, shock-dependent, and no hydrocortisone groups, respectively. Conclusions and Relevance: Among patients with severe COVID-19, treatment with a 7-day fixed-dose course of hydrocortisone or shock-dependent dosing of hydrocortisone, compared with no hydrocortisone, resulted in 93% and 80% probabilities of superiority with regard to the odds of improvement in organ support-free days within 21 days. However, the trial was stopped early and no treatment strategy met prespecified criteria for statistical superiority, precluding definitive conclusions. Trial Registration: ClinicalTrials.gov Identifier: NCT02735707

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Evaluating the Effects of SARS-CoV-2 Spike Mutation D614G on Transmissibility and Pathogenicity.

Global dispersal and increasing frequency of the SARS-CoV-2 spike protein variant D614G are suggestive of a selective advantage but may also be due to a random founder effect. We investigate the hypothesis for positive selection of spike D614G in the United Kingdom using more than 25,000 whole genome SARS-CoV-2 sequences. Despite the availability of a large dataset, well represented by both spike 614 variants, not all approaches showed a conclusive signal of positive selection. Population genetic analysis indicates that 614G increases in frequency relative to 614D in a manner consistent with a selective advantage. We do not find any indication that patients infected with the spike 614G variant have higher COVID-19 mortality or clinical severity, but 614G is associated with higher viral load and younger age of patients. Significant differences in growth and size of 614G phylogenetic clusters indicate a need for continued study of this variant

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

Peer reviewe

Measurement of the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe