57 research outputs found
Employee Churn in After-School Care: Manager Influences on Retention and Turnover
This study examined field employee turnover at a national after-school program provider to assess the knowledge, skills, motivation, and organizational influences of those with the greatest impact on employee retentionâarea managers who oversee after-school programs and their ÂÂÂfrontline staff. Clark and Estesâ (2008) gap analysis served as the general conceptual framework for the study. A convergent parallel mixed methods case study was conducted using historical document analysis, surveys, interviews, and observations. Analysis revealed high employee retention (74%) as well as high turnover (62%), which can coexist when most staff are retained, but a smaller segment repeatedly churns over the same period. Specifically, recurring turnover among 37% of staff roles was found to be the source of the high turnover rate, while 63% of roles remained filled and stable. Further analysis of managersâ mindset illuminated barriers to success with retention, including limited knowledge of factors related to turnover, perception of minimal organizational focus on and resources for retention, significant external locus of control over turnover, and lack of ownership and accountability for turnover. After implementing context-specific solutions grounded in literature and in the New World Kirkpatrick Model (Kirkpatrick & Kirkpatrick, 2016), a 1-year follow-up indicated elevations in 16 of 17 areas of manager mindset around retention, including 90% or higher agreement in 12 of 17 areas, a 22% decrease in turnover, an 8% increase in stable roles, and an 11% decrease in unstable or repeatedly churning roles
The Youth Development Workforce: The People, the Profession, and the Possibilities
Understanding the role of youth workers and promoting an accurate representation of these professionals and their work requires a focus on current research, practice, and policies that capture the challenges and opportunities of the youth development workforce. An overview of this special issue of the Journal of Youth Development examines efforts to support individual youth workers, strategies organizations use to prepare and assist youth workers, and system approaches to building the capacity of the workforce in key areas such as quality and social emotional learning, and concludes with an encapsulation of interviews with 10 key leaders nationwide. They identified the overarching task as one of identification of the elements that can make the field cohesive across the different settings and programs, while supporting youth in their growth through experiences that are rooted in the science of learning and development. Finally, this special issue offers the opportunity to better understand the youth workers, examine different types of professional development pathways, explore the role that systems can play in support of these workers, and reflect on the challenges and opportunities raised by key leaders in the profession
HNF1B and Endometrial Cancer Risk: Results from the PAGE study
We examined the association between HNF1B variants identified in a recent genome-wide association study and endometrial cancer in two large case-control studies nested in prospective cohorts: the Multiethnic Cohort Study (MEC) and the Women's Health Initiative (WHI) as part of the Population Architecture using Genomics and Epidemiology (PAGE) study. A total of 1,357 incident cases of invasive endometrial cancer and 7,609 controls were included in the analysis (MEC: 426 cases/3,854 controls; WHI: 931cases/3,755 controls). The majority of women in the WHI were European American, while the MEC included sizable numbers of African Americans, Japanese and Latinos. We estimated the odds ratios (ORs) per allele and 95% confidence intervals (CIs) of each SNP using unconditional logistic regression adjusting for age, body mass index, and four principal components of ancestry informative markers. The combined ORs were estimated using fixed effect models. Rs4430796 and rs7501939 were associated with endometrial cancer risk in MEC and WHI with no heterogeneity observed across racial/ethnic groups (Pâ„0.21) or between studies (Pâ„0.70). The ORper allele was 0.82 (95% CI: 0.75, 0.89; Pâ=â5.63Ă10â6) for rs4430796 (G allele) and 0.79 (95% CI: 0.73, 0.87; Pâ=â3.77Ă10â7) for rs7501939 (A allele). The associations with the risk of Type I and Type II tumors were similar (Pâ„0.19). Adjustment for additional endometrial cancer risk factors such as parity, oral contraceptive use, menopausal hormone use, and smoking status had little effect on the results. In conclusion, HNF1B SNPs are associated with risk of endometrial cancer and that the associated relative risks are similar for Type I and Type II tumors
A quantum Monte Carlo study of the one-dimensional ionic Hubbard model
Quantum Monte Carlo methods are used to study a quantum phase transition in a
1D Hubbard model with a staggered ionic potential (D). Using recently
formulated methods, the electronic polarization and localization are determined
directly from the correlated ground state wavefunction and compared to results
of previous work using exact diagonalization and Hartree-Fock. We find that the
model undergoes a thermodynamic transition from a band insulator (BI) to a
broken-symmetry bond ordered (BO) phase as the ratio of U/D is increased. Since
it is known that at D = 0 the usual Hubbard model is a Mott insulator (MI) with
no long-range order, we have searched for a second transition to this state by
(i) increasing U at fixed ionic potential (D) and (ii) decreasing D at fixed U.
We find no transition from the BO to MI state, and we propose that the MI state
in 1D is unstable to bond ordering under the addition of any finite ionic
potential. In real 1D systems the symmetric MI phase is never stable and the
transition is from a symmetric BI phase to a dimerized BO phase, with a
metallic point at the transition
PARĂMETROS DE QUALIDADE DA CARNE DE CARANGUEJO-UĂĂ (Ucides cordatus - Linnaeus, 1763) OBTIDA PELOS MĂTODOS EXPERIMENTAL E ARTESANAL
O objetivo do presente estudo foi avaliar a qualidade da carne de caranguejo-uçå obtida por mĂ©todo experimental, usando-se as Boas PrĂĄticas de Fabricação (BPF) e pelo mĂ©todo artesanal (sem as BPF). Foram avaliados 100 caranguejos mediante cada mĂ©todo. Observaram-se valores semelhantes para as amostras obtidas pelos mĂ©todos experimental e artesanal para a contagem de Staphylococcus coagulase positiva ( 1.100 NMP. g-1 para Coliformes Totais, e < 3 e 43 NMP. g-1 para coliformes a 45 ÂșC, respectivamente. NĂŁo foi detectada Salmonella spp. nas amostras analisadas. As amostras obtidas pelos dois mĂ©todos apresentaram teores mĂ©dios de Bases VolĂĄteis Totais de 16,80 e 23,90 mg N/100 g, de Trimetilamina de 0,31 e 0,49 mg N/100 g e valores de pH de 8,0 e 7,8, respectivamente. Quanto Ă cocção, todas as amostras apresentaram odor normal, caldo lĂmpido, carne firme e resultados negativos na prova de Nessler. NĂŁo foram detectadas histamina, putrescina e cadaverina na carne de caranguejo estudada. As amostras analisadas apresentaram boa qualidade fĂsico-quĂmica, sendo classificadas como âproduto de acordo com os padrĂ”es legais vigentesâ para a Contagem de Staphylococcus coagulase positiva, NMP de Coliformes totais e a 45 ÂșC e na pesquisa de Salmonella spp. As amostras obtidas pelo mĂ©todo artesanal foram consideradas como âproduto imprĂłprio para o consumo humanoâ em relação Ă Contagem de BactĂ©rias HeterotrĂłficas AerĂłbias MesĂłfilas. A sequĂȘncia tecnolĂłgica e as BPF utilizadas no mĂ©todo experimental contribuĂram para a boa qualidade bacteriolĂłgica e fĂsico-quĂmica da carne de caranguejo-uçå
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Identification of novel epithelial ovarian cancer loci in women of African ancestry.
Women of African ancestry have lower incidence of epithelial ovarian cancer (EOC) yet worse survival compared to women of European ancestry. We conducted a genome-wide association study in African ancestry women with 755 EOC cases, including 537 high-grade serous ovarian carcinomas (HGSOC) and 1,235 controls. We identified four novel loci with suggestive evidence of association with EOC (pâ<â1âĂâ10-6 ), including rs4525119 (intronic to AKR1C3), rs7643459 (intronic to LOC101927394), rs4286604 (12âkb 3' of UGT2A2) and rs142091544 (5 kb 5' of WWC1). For HGSOC, we identified six loci with suggestive evidence of association including rs37792 (132âkb 5' of follistatin [FST]), rs57403204 (81âkb 3' of MAGEC1), rs79079890 (LOC105376360 intronic), rs66459581 (5 kb 5' of PRPSAP1), rs116046250 (GABRG3 intronic) and rs192876988 (32âkb 3' of GK2). Among the identified variants, two are near genes known to regulate hormones and diseases of the ovary (AKR1C3 and FST), and two are linked to cancer (AKR1C3 and MAGEC1). In follow-up studies of the 10 identified variants, the GK2 region SNP, rs192876988, showed an inverse association with EOC in European ancestry women (p = 0.002), increased risk of ER positive breast cancer in African ancestry women (p = 0.027) and decreased expression of GK2 in HGSOC tissue from African ancestry women (p = 0.004). A European ancestry-derived polygenic risk score showed positive associations with EOC and HGSOC in women of African ancestry suggesting shared genetic architecture. Our investigation presents evidence of variants for EOC shared among European and African ancestry women and identifies novel EOC risk loci in women of African ancestry
Pulmonary Hypertension in Adults with Congenital Heart Disease: Real-World Data from the International COMPERA-CHD Registry
Introduction: Pulmonary hypertension (PH) is a common complication in patients with
congenital heart disease (CHD), aggravating the natural, post-operative, or post-interventional course
of the underlying anomaly. The various CHDs differ substantially in characteristics, functionality, and
clinical outcomes among each other and compared with other diseases with pulmonary hypertension.
Objective: To describe current management strategies and outcomes for adults with PH in relation to
different types of CHD based on real-world data. Methods and results: COMPERA (Comparative,
Prospective Registry of Newly Initiated Therapies for Pulmonary Hypertension) is a prospective,
international PH registry comprising, at the time of data analysis, >8200 patients with various forms of
PH. Here, we analyzed a subgroup of 680 patients with PH due to CHD, who were included between
2007 and 2018 in 49 specialized centers for PH and/or CHD located in 11 European countries. At
enrollment, the patientsâ median age was 44 years (67% female), and patients had either pre-tricuspid
shunts, post-tricuspid shunts, complex CHD, congenital left heart or aortic disease, or miscellaneous
other types of CHD. Upon inclusion, targeted therapies for pulmonary arterial hypertension (PAH) included endothelin receptor antagonists, PDE-5 inhibitors, prostacyclin analogues, and soluble
guanylate cyclase stimulators. Eighty patients with Eisenmenger syndrome were treatment-naĂŻve.
While at inclusion the primary PAH treatment for the cohort was monotherapy (70% of patients),
with 30% of the patients on combination therapy, after a median observation time of 45.3 months,
the number of patients on combination therapy had increased significantly, to 50%. The use of oral
anticoagulants or antiplatelets was dependent on the underlying diagnosis or comorbidities. In the
entire COMPERA-CHD cohort, after follow-up and receiving targeted PAH therapy (n = 511), 91
patients died over the course of a 5-year follow up. The 5-year KaplanâMeier survival estimate for
CHD associated PH was significantly better than that for idiopathic PAH (76% vs. 54%; p < 0.001).
Within the CHD associated PH group, survival estimates differed particularly depending on the
underlying diagnosis and treatment status. Conclusions: In COMPERA-CHD, the overall survival of
patients with CHD associated PH was dependent on the underlying diagnosis and treatment status,
but was significantly better as than that for idiopathic PAH. Nevertheless, overall survival of patients
with PAH due to CHD was still markedly reduced compared with survival of patients with other
types of CHD, despite an increasing number of patients on PAH-targeted combination therapy
Type 2 Diabetes Variants Disrupt Function of SLC16A11 through Two Distinct Mechanisms
Type 2 diabetes (T2D) affects Latinos at twice the rate seen in populations of European descent. We recently identified a risk haplotype spanning SLC16A11 that explains âŒ20% of the increased T2D prevalence in Mexico. Here, through genetic fine-mapping, we define a set of tightly linked variants likely to contain the causal allele(s). We show that variants on the T2D-associated haplotype have two distinct effects: (1) decreasing SLC16A11 expression in liver and (2) disrupting a key interaction with basigin, thereby reducing cell-surface localization. Both independent mechanisms reduce SLC16A11 function and suggest SLC16A11 is the causal gene at this locus. To gain insight into how SLC16A11 disruption impacts T2D risk, we demonstrate that SLC16A11 is a proton-coupled monocarboxylate transporter and that genetic perturbation of SLC16A11 induces changes in fatty acid and lipid metabolism that are associated with increased T2D risk. Our findings suggest that increasing SLC16A11 function could be therapeutically beneficial for T2D. Video Abstract [Figure presented] Keywords: type 2 diabetes (T2D); genetics; disease mechanism; SLC16A11; MCT11; solute carrier (SLC); monocarboxylates; fatty acid metabolism; lipid metabolism; precision medicin
Pleiotropic Associations of Risk Variants Identified for Other Cancers With Lung Cancer Risk: The PAGE and TRICL Consortia
BackgroundGenome-wide association studies have identified hundreds of genetic variants associated with specific cancers. A few of these risk regions have been associated with more than one cancer site; however, a systematic evaluation of the associations between risk variants for other cancers and lung cancer risk has yet to be performed.MethodsWe included 18023 patients with lung cancer and 60543 control subjects from two consortia, Population Architecture using Genomics and Epidemiology (PAGE) and Transdisciplinary Research in Cancer of the Lung (TRICL). We examined 165 single-nucleotide polymorphisms (SNPs) that were previously associated with at least one of 16 nonâlung cancer sites. Study-specific logistic regression results underwent meta-analysis, and associations were also examined by race/ethnicity, histological cell type, sex, and smoking status. A Bonferroni-corrected P value of 2.5Ă10â5 was used to assign statistical significance.ResultsThe breast cancer SNP LSP1 rs3817198 was associated with an increased risk of lung cancer (odds ratio [OR] = 1.10; 95% confidence interval [CI] = 1.05 to 1.14; P = 2.8Ă10â6). This association was strongest for women with adenocarcinoma (P = 1.2Ă10â4) and not statistically significant in men (P = .14) with this cell type (P het by sex = .10). Two glioma risk variants, TERT rs2853676 and CDKN2BAS1 rs4977756, which are located in regions previously associated with lung cancer, were associated with increased risk of adenocarcinoma (OR = 1.16; 95% CI = 1.10 to 1.22; P = 1.1Ă10â8) and squamous cell carcinoma (OR = 1.13; CI = 1.07 to 1.19; P = 2.5Ă10â5), respectively.ConclusionsOur findings demonstrate a novel pleiotropic association between the breast cancer LSP1 risk region marked by variant rs3817198 and lung cancer risk
Search for dark matter produced in association with bottom or top quarks in âs = 13 TeV pp collisions with the ATLAS detector
A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fbâ1 of protonâproton collision data recorded by the ATLAS experiment at âs = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements
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