615 research outputs found
The effect of aural instruction with tonal and rhythm patterns from Edwin Gordonâs Music Learning Theory on the aural discrimination abilities of second-grade students
The purpose of this study was to investigate the effect of aural instruction with tonal and rhythm patterns from Edwin Gordonâs Music Learning Theory on the tonal and rhythmic discrimination abilities of second-grade students. The secondary purpose of this study was to determine whether there was a relationship among the extent of music experience, preference for music activities, and the tonal and rhythmic discrimination abilities across four groups of second-grade students. Participants were four intact second-grade general music classes from one elementary school in North Carolina. The classes were assigned randomly to three experimental groups and one control group. I instructed the experimental groups using Edwin Gordonâs aural-based tonal patterns in Music Learning Theory for ten minutes each class period during a treatment week and rhythm patterns the next treatment week. The experimental groups were assigned randomly to one of three conditions: (a) playing instruments only, (b) singing and chanting only, and (c) singing, chanting, and playing instruments. The control group did not receive tonal and rhythm pattern instruction; instead, I instructed participants for ten minutes each class period using classroom activities from the Spotlight on Music second-grade textbook series. At the beginning of the study, all participants were administered the Primary Measures of Music Audiation (PMMA) to measure their developmental music aptitude. Participants were administered a researcher-created questionnaire to determine the extent of their musical experience and their music activity preferences. Some students were selected at random to be interviewed by me to provide additional information about their questionnaire responses. At the end of the study, all participants were administered the PMMA as a posttest. The research study period was August 31 â December 16, 2015, with twelve weeks allotted for the instructional treatment period. Using the pretest as the covariate, an ANCOVA was performed to determine whether there were any significant main effects or interaction effects of instruction. Results of the ANCOVA analyses indicated there were no significant main effects or interaction effects of instruction for any of the PMMA subtests at the .05 level of significance. Stepwise multiple regression analyses were conducted to determine whether there were significant relationships among the extent of music experience, preference for music activities, and the PMMA scores. Results indicated that preference for jazz and the genre labeled âotherâ (i.e., rap, hip-hop, and âKidz Bopâ) were small, negative predictors for PMMA tonal scores. Preference for singing as a favorite music activity was a small, negative predictor for PMMA rhythm scores, and preference for the pop genre was a small, positive predictor for PMMA rhythm scores. Jazz genre preference was a small, negative predictor for PMMA composite scores, while pop genre preference was a small, positive predictor. The control group, as compared to the three experimental groups, was a small, positive predictor for PMMA rhythm scores only. Based on these results, aural instruction with tonal and rhythm patterns from Edwin Gordon's Music Learning Theory did not have a significant effect on the tonal and rhythmic discrimination abilities of second-grade students
Recommendations for conduct, methodological practices, and reporting of cost-effectiveness analyses : second panel on cost-effectiveness in health and medicine
Importance Since publication of the report by the Panel on Cost-Effectiveness in Health and Medicine in 1996, researchers have advanced the methods of cost-effectiveness analysis, and policy makers have experimented with its application. The need to deliver health care efficiently and the importance of using analytic techniques to understand the clinical and economic consequences of strategies to improve health have increased in recent years.Objective To review the state of the field and provide recommendations to improve the quality of cost-effectiveness analyses. The intended audiences include researchers, government policy makers, public health officials, health care administrators, payers, businesses, clinicians, patients, and consumers.Design In 2012, the Second Panel on Cost-Effectiveness in Health and Medicine was formed and included 2 co-chairs, 13 members, and 3 additional members of a leadership group. These members were selected on the basis of their experience in the field to provide broad expertise in the design, conduct, and use of cost-effectiveness analyses. Over the next 3.5 years, the panel developed recommendations by consensus. These recommendations were then reviewed by invited external reviewers and through a public posting process.Findings The concept of a âreference caseâ and a set of standard methodological practices that all cost-effectiveness analyses should follow to improve quality and comparability are recommended. All cost-effectiveness analyses should report 2 reference case analyses: one based on a health care sector perspective and another based on a societal perspective. The use of an âimpact inventory,â which is a structured table that contains consequences (both inside and outside the formal health care sector), intended to clarify the scope and boundaries of the 2 reference case analyses is also recommended. This special communication reviews these recommendations and others concerning the estimation of the consequences of interventions, the valuation of health outcomes, and the reporting of cost-effectiveness analyses.Conclusions and Relevance The Second Panel reviewed the current status of the field of cost-effectiveness analysis and developed a new set of recommendations. Major changes include the recommendation to perform analyses from 2 reference case perspectives and to provide an impact inventory to clarify included consequences
Fitness of Escherichia coli strains carrying expressed and partially silent IncN and IncP1 plasmids
BACKGROUND: Understanding the survival of resistance plasmids in the absence of selective pressure for the antibiotic resistance genes they carry is important for assessing the value of interventions to combat resistant bacteria. Here, several poorly explored questions regarding the fitness impact of IncP1 and IncN broad host range plasmids on their bacterial hosts are examined; namely, whether related plasmids have similar fitness impacts, whether this varies according to host genetic background, and what effect antimicrobial resistance gene silencing has on fitness. RESULTS: For the IncP1 group pairwise in vitro growth competition demonstrated that the fitness cost of plasmid RP1 depends on the host strain. For the IncN group, plasmids R46 and N3 whose sequence is presented for the first time conferred remarkably different fitness costs despite sharing closely related backbone structures, implicating the accessory genes in fitness. Silencing of antimicrobial resistance genes was found to be beneficial for host fitness with RP1 but not for IncN plasmid pVE46. CONCLUSIONS: These findings suggest that the fitness impact of a given plasmid on its host cannot be inferred from results obtained with other host-plasmid combinations, even if these are closely related
Bone Health Nutrition Issues in Aging
Bone health is an important issue in aging. Calcium and vitamin D currently have the most focus in published research on nutrition and bone health in aging, although evidence from published research is not conclusive. A systematic review was conducted to determine the impact of dietary and supplemental interventions focused on calcium and vitamin D over the past 10 years. Using key words to search, and search limits (aging population, English), 62 papers were found related to diet, nutrition, and bone; and 157 were found related to calcium and bone. Our review found a positive effect on bone health for supplements; food-based interventions; and educational strategies. Although there may be a publishing bias related to non-significant findings not being published, our results suggest the effectiveness of food based and educational interventions with less economic impact to the individual, as well as less risk of physiological side effects occurring
Galaxy Zoo: Bar Lengths in Nearby Disk Galaxies
We present an analysis of bar length measurements of 3150 local galaxies in a
volume limited sample of low redshift (z < 0.06) disk galaxies. Barred galaxies
were initially selected from the Galaxy Zoo 2 project, and the lengths and
widths of the bars were manually drawn by members of the Galaxy Zoo community
using a Google Maps interface. Bars were measured independently by different
observers, multiple times per galaxy (>=3), and we find that observers were
able to reproduce their own bar lengths to 3% and each others' to better than
20%. We find a "color bimodality" in our disk galaxy population with bar
length, i.e., longer bars inhabit redder disk galaxies and the bars themselves
are redder, and that the bluest galaxies host the smallest galactic bars (< 5
kpc/h). We also find that bar and disk colors are clearly correlated, and for
galaxies with small bars, the disk is, on average, redder than the bar colors,
while for longer bars the bar then itself is redder, on average, than the disk.
We further find that galaxies with a prominent bulge are more likely to host
longer bars than those without bulges. We categorise our galaxy populations by
how the bar and/or ring are connected to the spiral arms. We find that galaxies
whose bars are directly connected to the spiral arms are preferentially bluer
and that these galaxies host typically shorter bars. Within the scatter, we
find that stronger bars are found in galaxies which host a ring (and only a
ring). The bar length and width measurements used herein are made publicly
available for others to use (http://data.galaxyzoo.org).Comment: 15 pages, 16 figures, accepted in MNRA
The Empirical Foundations of Telemedicine Interventions for Chronic Disease Management
The telemedicine intervention in chronic disease management promises to involve patients in their own care, provides continuous monitoring by their healthcare providers, identifies early symptoms, and responds promptly to exacerbations in their illnesses. This review set out to establish the evidence from the available literature on the impact of telemedicine for the management of three chronic diseases: congestive heart failure, stroke, and chronic obstructive pulmonary disease. By design, the review focuses on a limited set of representative chronic diseases because of their current and increasing importance relative to their prevalence, associated morbidity, mortality, and cost. Furthermore, these three diseases are amenable to timely interventions and secondary prevention through telemonitoring. The preponderance of evidence from studies using rigorous research methods points to beneficial results from telemonitoring in its various manifestations, albeit with a few exceptions. Generally, the benefits include reductions in use of service: hospital admissions/re-admissions, length of hospital stay, and emergency department visits typically declined. It is important that there often were reductions in mortality. Few studies reported neutral or mixed findings.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140284/1/tmj.2014.9981.pd
National Telemedicine Initiatives: Essential to Healthcare Reform
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78116/1/tmj.2009.9960.pd
Hundreds of variants clustered in genomic loci and biological pathways affect human height
Most common human traits and diseases have a polygenic pattern of inheritance: DNA sequence variants at many genetic loci influence the phenotype. Genome-wide association (GWA) studies have identified more than 600 variants associated with human traits, but these typically explain small fractions of phenotypic variation, raising questions about the use of further studies. Here, using 183,727 individuals, we show that hundreds of genetic variants, in at least 180 loci, influence adult height, a highly heritable and classic polygenic trait. The large number of loci reveals patterns with important implications for genetic studies of common human diseases and traits. First, the 180 loci are not random, but instead are enriched for genes that are connected in biological pathways (P = 0.016) and that underlie skeletal growth defects (Pâ<â0.001). Second, the likely causal gene is often located near the most strongly associated variant: in 13 of 21 loci containing a known skeletal growth gene, that gene was closest to the associated variant. Third, at least 19 loci have multiple independently associated variants, suggesting that allelic heterogeneity is a frequent feature of polygenic traits, that comprehensive explorations of already-discovered loci should discover additional variants and that an appreciable fraction of associated loci may have been identified. Fourth, associated variants are enriched for likely functional effects on genes, being over-represented among variants that alter amino-acid structure of proteins and expression levels of nearby genes. Our data explain approximately 10% of the phenotypic variation in height, and we estimate that unidentified common variants of similar effect sizes would increase this figure to approximately 16% of phenotypic variation (approximately 20% of heritable variation). Although additional approaches are needed to dissect the genetic architecture of polygenic human traits fully, our findings indicate that GWA studies can identify large numbers of loci that implicate biologically relevant genes and pathways.
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Caught between Innovation and Tradition: Young Journalists as Normative Change Agents in the Journalistic Field
The necessity of innovation within the newsroom, and the rise of entrepreneurial initiatives outside it, have become increasingly apparent in the past decade. A common thread in this discourse is the desire for young journalists to be âchange agentsâ who foster innovation and thus stretch existing boundaries in the profession. Employers hope new hires, seen as attuned to their generationâs news use and as offering fresh knowledge and insights, will be able to drive new journalism initiatives that can attract a younger audience and so improve the enterpriseâs odds for economic sustainability. Using a longitudinal three-wave survey among students enrolled in two leading journalism programs in Britain and the Netherlands, we explore whether studentsâ perceptions of innovation and entrepreneurialism are in line with this optimistic industry discourse. Do students perceive themselves as change agents who will be challenging and potentially shifting the boundaries of journalism? Or do they adhere to traditional ideas about norms and behaviors that have been ingrained in the doxa and habitus of the journalistic field over previous decades? We find that although journalism students favor the idea of âinnovationâ and see the value of engaging audiences, they define change predominantly in terms of technology rather than more substantive cultural transformation
Pulmonary, Gonadal, and Central Nervous System Status after Bone Marrow Transplantation for Sickle Cell Disease
We conducted a prospective, multicenter investigation of human-leukocyte antigen (HLA) identical sibling bone marrow transplantation (BMT) in children with severe sickle cell disease (SCD) between 1991 and 2000. To determine if children were protected from complications of SCD after successful BMT, we extended our initial study of BMT for SCD to conduct assessments of the central nervous system (CNS) and of pulmonary function 2 or more years after transplantation. In addition, the impact on gonadal function was studied. After BMT, patients with stroke who had stable engraftment of donor cells experienced no subsequent stroke events after BMT, and brain magnetic resonance imaging (MRI) exams demonstrated stable or improved appearance. However, 2 patients with graft rejection had a second stroke after BMT. After transplantation, most patients also had unchanged or improved pulmonary function. Among the 11 patients who had restrictive lung changes at baseline, 5 were improved and 6 had persistent restrictive disease after BMT. Of the 2 patients who had obstructive changes at baseline, 1 improved and 1 had worsened obstructive disease after BMT. There was, however, significant gonadal toxicity after BMT, particularly among female recipients. In summary, individuals who had stable donor engraftment did not experience sickle-related complications after BMT, and were protected from progressive CNS and pulmonary disease
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