303 research outputs found
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Charter school superintendents’ perceptions of operating a charter school system in Texas : a phenomenological investigation
This qualitative study involved interviewing four superintendents of public charter schools in Region 10 due to Texas legislation, namely, SB 2 (financial and academic accountability for charters) and HB 5 (pathways for high school graduation for all public schools). This qualitative study answered the following questions: (a) What implications does the implementation of state law have on superintendents’ perceptions about leading Texas’ charter schools? (b) What functions of charter schools were most affected state law and policy according to superintendents of charter schools open at the time SB 2 and HB 5 went into effect? (c) What adjustments to the 10 functions of the school districts may be necessary for applying this model of school functioning to public charter schools in Texas? Each one-on-one interview was conducted in person and lasted 60 minutes to several hours. The interviews were recorded and transcribed through Rev.com and coded using NVivo. The findings revealed that charter school superintendents were affected with a high sense of urgency by the demands of SB 2. The four superintendents saw HB 5 as mostly something that affected Curriculum and Instruction but not as a factor that could lead to charter school closure. The functions most influenced by SB 2 and HB 5 were Administrative, Finance, and Business Operations; Curriculum and Instruction; and Governance and Operations. The duty to manage finances responsibly was reiterated by all four superintendents throughout the data. These four superintendents spoke of finance as specifically being the most crucial subfunction for ensuring the viability of their charter schools. The data showed HB 5 impacted not only charter school configurations but also access to special funds, such as career technology money. As for the need to make any alterations to the 10 functions, Superintendent 1 said no changes were needed most effectively: “The functions are the functions are the functions.” Advocacy and education about charter schools is needed, and additional research for understanding how charter schools function as public schools in Texas is needed.Educational Administratio
Proceedings of the Workshop Social Science Research and the CRSPs
Contents
Executive Summary: A New Agenda for CRSP Social Science Research - C. Milton Coughenour . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Session 1
Developing a Strategic Research Agenda David G. Cummins, Chair
Framing a Strategic Research Agenda.-John Yohe ................ 3
Social Sciences and Collaborative Research: Toward an Agenda for the Social Sciences in Agriculture -Jere Lee Gilles ............... 7
Session 2
Technology Development and Sustaining Household Food Security Kathleen DeWalt, Chair
Technology Development and Household Food Security - John M Staatz and Richard H. Bemsten . . . . . . . . . . . . . . . . . . 21
Differences among Women Fanners: Implications for African Agricultural Research Programs - Anne E. Ferguson . . . . . . . . . . . . 4
Common variants in FOXP1 are associated with generalized vitiligo
In a recent genome-wide association study of generalized vitiligo, we identified ten confirmed susceptibility loci. By testing additional loci that showed suggestive association in the genome-wide study, using two replication cohorts of European descent, we observed replicated association of generalized vitiligo with variants at 3p13 encompassing FOXP1 (rs17008723, combined P = 1.04 × 10−8) and with variants at 6q27 encompassing CCR6 (rs6902119, combined P = 3.94 × 10−7)
North: Volume Two
North Volume Two reflects our belief in photography as a relevant tool for exploring our ever-changing world. Whether in Preston, Liverpool, Berlin or Guangzhou the image-makers create a conversation with contemporary life as they endeavour to make their surroundings legible. In this second edition we continue North in the streets and spaces of the city. From contested sites of demolition, to new imaginaries formulated in the studio and in domestic, digital and social space, the volume is testament to how the urban endures as one of photography’s perennial objects of study. Like the first edition, We aim to highlight our commitment to everyday life as a meaningful arena for research and cultural production
Identity-by-descent filtering as a tool for the identification of disease alleles in exome sequence data from distant relatives
Large-scale, deep resequencing may be the next logical step in the genetic investigation of common complex diseases. Because each individual is likely to carry many thousands of variants, the identification of causal alleles requires an efficient strategy to reduce the number of candidate variants. Under many genetic models, causal alleles can be expected to reside within identity-by-descent (IBD) regions shared by affected relatives. In distant relatives, IBD regions constitute a small portion of the genome and can thus greatly reduce the search space for causal alleles. However, the effectiveness of this strategy is unknown. We test the simulated mini-exome data set in extended pedigrees provided by Genetic Analysis Workshop 17. At the fourth- and fifth-degree level of relatedness, case-case pairs shared between 1% and 9% of the genome identical by descent. As expected, no genes were shared identical by descent by all case subjects, but 43 genes were shared by many case subjects across at least 50 replicates. We filtered variants in these genes based on population frequency, function, informativeness, and evidence of association using the family-based association test. This analysis highlighted five genes previously implicated in triglyceride, lipid, and cholesterol metabolism. Comparison with the list of true risk alleles revealed that strict IBD filtering followed by association testing of the rarest alleles was the most sensitive strategy. IBD filtering may be a useful strategy for narrowing down the list of candidate variants in exome data, but the optimal degree of relatedness of affected pairs will depend on the genetic architecture of the disease under study
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Symbolic closure: Towards a renewed sociological perspective on the relationship between higher education, credentials and the graduate labour market
This article explores how our understanding of the graduate labour market can be improved by re-assessing some of the insights of the conflictual tradition within sociology. In particular, its theorising of ‘social closure’ and the use of educational credentials within the labour market remain highly relevant. Yet these ideas need to be modified to better deal with the current social, economic and educational contexts. This article extends the social closure literature to deal with some of the changes within the graduate labour market by turning to Pierre Bourdieu’s ideas on symbolic violence. I will argue that ‘symbolic closure’, the reliance on exclusion through categorisation and classification, becomes of greater importance in a graduate labour market that no longer offers any clarity about what graduate skills, jobs and rewards constitute and signify
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Erratum: Sequence data and association statistics from 12,940 type 2 diabetes cases and controls.
This corrects the article DOI: 10.1038/sdata.2017.179
Comprehensive association analysis of candidate genes for generalized vitiligo supports XBP1, FOXP3, and TSLP
We previously carried out a genome-wide association study of generalized vitiligo (GV) in non-Hispanic whites, identifying 13 confirmed susceptibility loci. In this study, we re-analyzed the genome-wide data set (comprising 1,392 cases and 2,629 controls) to specifically test association of all 33 GV candidate genes that have previously been suggested for GV, followed by meta-analysis incorporating both current and previously published data. We detected association of three of the candidate genes tested: TSLP (rs764916, P3.0E-04, odds ratio (OR)1.60; meta-P for rs38069333.1E-03), XBP1 (rs6005863, P3.6E-04, OR1.17; meta-P for rs22695779.5E-09), and FOXP3 (rs11798415, P5.8E-04, OR1.19). Association of GV with CTLA4 (rs12992492, P5.9E-05, OR1.20; meta-P for rs2317751.0E-04) seems to be secondary to epidemiological association with other concomitant autoimmune diseases. Within the major histocompatibility complex (MHC), at 6p21.33, association with TAP1-PSMB8 (rs3819721, P5.2E-06) seems to derive from linkage disequilibrium with major primary signals in the MHC class I and class II regions
A comparison of genomic profiles of complex diseases under different models
Background: Various approaches are being used to predict individual risk to polygenic diseases from data provided
by genome-wide association studies. As there are substantial differences between the diseases investigated, the data
sets used and the way they are tested, it is difficult to assess which models are more suitable for this task.
Results: We compared different approaches for seven complex diseases provided by the Wellcome Trust Case
Control Consortium (WTCCC) under a within-study validation approach. Risk models were inferred using a variety of
learning machines and assumptions about the underlying genetic model, including a haplotype-based approach with
different haplotype lengths and different thresholds in association levels to choose loci as part of the predictive
model. In accordance with previous work, our results generally showed low accuracy considering disease heritability
and population prevalence. However, the boosting algorithm returned a predictive area under the ROC curve (AUC)
of 0.8805 for Type 1 diabetes (T1D) and 0.8087 for rheumatoid arthritis, both clearly over the AUC obtained by other
approaches and over 0.75, which is the minimum required for a disease to be successfully tested on a sample at risk,
which means that boosting is a promising approach. Its good performance seems to be related to its robustness to
redundant data, as in the case of genome-wide data sets due to linkage disequilibrium.
Conclusions: In view of our results, the boosting approach may be suitable for modeling individual predisposition to
Type 1 diabetes and rheumatoid arthritis based on genome-wide data and should be considered for more in-depth
research.This work was supported by the Spanish Secretary of Research, Development
and Innovation [TIN2010-20900-C04-1]; the Spanish Health Institute Carlos III
[PI13/02714]and [PI13/01527] and the Andalusian Research Program under
project P08-TIC-03717 with the help of the European Regional Development
Fund (ERDF). The authors are very grateful to the reviewers, as they believe that
their comments have helped to substantially improve the quality of the paper
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