139 research outputs found
The effect of a change in airfoil section on the hinge-moment characteristics of a half-delta tip control with a 60 degree sweep angle at a Mach number of 6.9
The Effects at a Mach Number of 6.86 of Drag Brakes on the Lift, Drag, and Pitching Moment of an Ogive Cylinder
Aerodynamic Characteristics of a 6-percent-thick Symmetrical Circular-arc Airfoil Having a 30-percent-chord Trailing-edge Flap at a Mach Number of 6.9
The 2009 Claremont Debates: the Promise and Pitfalls of Utilization-focused and Empowerment Evaluation
Background: Hundreds of evaluators visit the Claremont Colleges in southern California each year to discuss a wide range of topics related to improving the quality of evaluation practice. Debates between thought leaders in the field have been one of the most popular and informative ways to advance understanding about how best to practice evaluation in contemporary times. Purpose: The purpose of this article is to provide a written transcript of the 2009 Claremont Evaluation Debates. The first debate is between Michael Quinn Patton and Michael Scriven on the promise and pitfalls of utilization-focused evaluation. The second debate is between David Fetterman, Michael Quinn Patton, and Michael Scriven on the promise and pitfalls of empowerment evaluation. Setting: The debates occurred at the Claremont Graduate University on August 23-24, 2009. Several hundred evaluators from around the world also viewed and participated in the debates via a live webcast
Lift, Drag, and Static Longitudinal Stability Data from an Exploratory Investigation at a Mach Number of 6.86 of an Airplane Configuration Having a Wing of Trapezoidal Plan Form
Static Longitudinal and Lateral Stability and Control Data from an Exploratory Investigation at a Mach Number of 6.86 of an Airplane Configuration Having a Wing of Trapezoidal Plan Form
Static lateral stability data from an exploratory investigation at Mach number of 6.86 of an airplane configuration having a wing of trapezoidal plan form
Static Longitudinal and Lateral Stability and Control Characteristics of an Airplane Configuration Having a Wing of Trapezoidal Plan Form with Various Tail Airfoil Sections and Tail Arrangements at a Mach Number of 6.86
Whole home exercise intervention for depression in older care home residents (the OPERA study) : a process evaluation
Background:
The ‘Older People’s Exercise intervention in Residential and nursing Accommodation’ (OPERA) cluster randomised trial evaluated the impact of training for care home staff together with twice-weekly, physiotherapist-led exercise classes on depressive symptoms in care home residents, but found no effect. We report a process evaluation exploring potential explanations for the lack of effect.
Methods:
The OPERA trial included over 1,000 residents in 78 care homes in the UK. We used a mixed methods approach including quantitative data collected from all homes. In eight case study homes, we carried out repeated periods of observation and interviews with residents, care staff and managers. At the end of the intervention, we held focus groups with OPERA research staff. We reported our first findings before the trial outcome was known.
Results:
Homes showed large variations in activity at baseline and throughout the trial. Overall attendance rate at the group exercise sessions was low (50%). We considered two issues that might explain the negative outcome: whether the intervention changed the culture of the homes, and whether the residents engaged with the intervention. We found low levels of staff training, few home champions for the intervention and a culture that prioritised protecting residents from harm over encouraging activity. The trial team delivered 3,191 exercise groups but only 36% of participants attended at least 1 group per week and depressed residents attended significantly fewer groups than those who were not depressed. Residents were very frail and therefore most groups only included seated exercises.
Conclusions:
The intervention did not change the culture of the homes and, in the case study homes, activity levels did not change outside the exercise groups. Residents did not engage in the exercise groups at a sufficient level, and this was particularly true for those with depressive symptoms at baseline. The physical and mental frailty of care home residents may make it impossible to deliver a sufficiently intense exercise intervention to impact on depressive symptoms
Promover a partir do interior: o papel do facilitador no apoio a formas dialógicas e reflexivas de auto-avaliação
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