1,854 research outputs found
Quantification of Cross-coupling and Motion Feedthrough for Multiaxis Controllers Used in an Air Combat Flying Task
A real-time piloted simulation of an air-to-air combat flying task using a wings-level-turn aircraft and various novel controllers was conducted. One objective is to quantify how the pilot interacts with the controllers and control modes, including: (1) controller versus aircraft response; (2) proprioceptive cross-coupling among axes of the controllers; and (3) biodynamic cross-coupling between the aircraft motions and the controllers. In order to aid in identifying the items listed above, both the target aircraft and the large amplitude multimode aerospace research simulator (LAMARS) motion system were distributed with quasi-random sums-of-sinusoids. Since the disturbances were separated in frequency, spectral analysis techniques were used to identify the three items listed. The results of the spectral analysis of controller motions from the two-axis side stick, a twist grip mounted on the side stick, a thumb button mounted on the side stick, and conventional rudder pedals are presented. Conclusions and recommendations for further research are also presented
Effectiveness of group-based self-management education for individuals with Type 2 diabetes:A systematic review with meta-analyses and meta-regression
Aims:
Patient education for the management of Type 2 diabetes can be delivered in various forms, with the goal of promoting and supporting positive self-management behaviours. This systematic review aimed to determine the effectiveness of group-based interventions compared with individual interventions or usual care for improving clinical, lifestyle and psychosocial outcomes in people with Type 2 diabetes.
Methods:
Six electronic databases were searched. Group-based education programmes for adults with Type 2 diabetes that measured glycated haemoglobin (HbA1c) and followed participants for ≥ 6 months were included. The primary outcome was HbA1c, and secondary outcomes included fasting blood glucose, weight, body mass index, waist circumference, blood pressure, blood lipid profiles, diabetes knowledge and self-efficacy.
Results:
Fifty-three publications describing 47 studies were included (n = 8533 participants). Greater reductions in HbA1c occurred in group-based education compared with controls at 6–10 months [n = 30 studies; mean difference (MD) = 3 mmol/mol (0.3%); 95% confidence interval (CI): −0.48, −0.15; P = 0.0002], 12–14 months [n = 27 studies; MD = 4 mmol/mol (0.3%); 95% CI: −0.49, −0.17; P < 0.0001], 18 months [n = 3 studies; MD = 8 mmol/mol (0.7%); 95% CI: −1.26, −0.18; P = 0.009] and 36–48 months [n = 5 studies; MD = 10 mmol/mol (0.9%); 95% CI: −1.52, −0.34; P = 0.002], but not at 24 months. Outcomes also favoured group-based education for fasting blood glucose, body weight, waist circumference, triglyceride levels and diabetes knowledge, but not at all time points. Interventions facilitated by a single discipline, multidisciplinary teams or health professionals with peer supporters resulted in improved outcomes in HbA1c when compared with peer-led interventions.
Conclusions:
Group-based education interventions are more effective than usual care, waiting list control and individual education at improving clinical, lifestyle and psychosocial outcomes in people with Type 2 diabetes.No Full Tex
Ground-State SiO Maser Emission Toward Evolved Stars
We have made the first unambiguous detection of vibrational ground-state
maser emission from SiO toward six evolved stars. Using the Very Large Array,
we simultaneously observed the v=0, J=1-0, 43.4-GHz, ground-state and the v=1,
J=1-0, 43.1-GHz, first excited-state transitions of SiO toward the oxygen-rich
evolved stars IRC+10011, o Ceti, W Hya, RX Boo, NML Cyg, and R Cas and the
S-type star chi Cyg. We detected at least one v=0 SiO maser feature from six of
the seven stars observed, with peak maser brightness temperatures ranging from
10,000 K to 108,800 K. In fact, four of the seven v=0 spectra show multiple
maser peaks, a phenomenon which has not been previously observed. Ground-state
thermal emission was detected for one of the stars, RX Boo, with a peak
brightness temperature of 200 K. Comparing the v=0 and the v=1 transitions, we
find that the ground-state masers are much weaker with spectral characteristics
different from those of the first excited-state masers. For four of the seven
stars the velocity dispersion is smaller for the v=0 emission than for the v=1
emission, for one star the dispersions are roughly equivalent, and for two
stars (one of which is RX Boo) the velocity spread of the v=0 emission is
larger. In most cases, the peak flux density in the v=0 emission spectrum does
not coincide with the v=1 maser peak. Although the angular resolution of these
VLA observations were insufficient to completely resolve the spatial structure
of the SiO emission, the SiO spot maps produced from the interferometric image
cubes suggest that the v=0 masers are more extended than their v=1
counterparts
Analyzing Math-to-Mastery through Brief Experimental Analysis
The current study evaluated the effectiveness of individualized math-to-mastery (MTM) interventions, selected though brief experimental analysis (BEA), at increasing math fluency skills for 3 elementary-aged females. As MTM has only been investigated as a multicomponent intervention, the present study utilized BEA to identify those specific components which led to math skills gains in the most efficient manner possible. BEA results indicated that for 2 of 3 participants only a partial MTM intervention was necessary to prompt fluency gains, while the entire intervention was the most effective for the third. During extended analysis all 3 participants displayed math skills gains above those seen during repeated baseline assessments. Results are discussed in terms of further refining MTM through BEA procedures so as to individually target math skill deficits by considering both intervention effectiveness and efficiency
Productivity Standards and the Impact on Quality of Care: A National Survey of Inpatient Rehabilitation Professionals
Background: Skyrocketing health care costs have resulted in significant changes to reimbursement rates in health care. The result has increased pressure to be as efficient as possible while maintaining high-quality care. The purpose of this exploratory study was to examine health care professionals’ perceptions on whether and how productivity pressures have impacted the quality of care in therapy practice.
Method: A survey was disseminated nationally to inpatient rehabilitation facilities.
Results: Two hundred and fifty-seven surveys were opened. Of these completed surveys, 154 participants completed the closed-ended questions and 109 participants completed the open-ended questions. Outcomes indicated that clinicians are concerned that growing productivity pressures are impacting the quality of care that they provide. In addition, the findings are consistent with the literature that an emphasis to maintain productivity standards is resulting in unprofessional practices.
Conclusion: Further research needs to be conducted to generalize these findings to the larger health care network. More advocacy for policy changes and the need for a unified strategic plan among the rehabilitation professions is indicated
Sensor Integrated Metal Dielectric Filters for Solar-Blind Silicon Ultraviolet Detectors
A filter for electromagnetic radiation including one or more dielectric spacer regions and one or more reflective regions integrated on a semiconductor substrate, the semiconductor substrate including a semiconductor photodetector, such that the filter transmits ultraviolet radiation to the semiconductor photodetector, the ultraviolet radiation having a range of wavelengths, and the filter suppresses transmission of electromagnetic radiation, having wavelengths outside the range of wavelengths, to the semiconductor photodetector
Folding model analysis of proton scattering from O nuclei
The elastic and inelastic proton scattering on O nuclei are
studied in a folding model formalism of nucleon-nucleus optical potential and
inelastic form factor. The DDM3Y effective interaction is used and the ground
state densities are obtained in continuum Skyrme-HFB approach. A
semi-microscopic approach of collective form factors is done to extract the
deformation parameters from inelastic scattering analysis while the microscopic
approach uses the continuum QRPA form factors. Implications of the values of
the deformation parameters, neutron and proton transition moments for the
nuclei are discussed. The p-analyzing powers on O nuclei are also
predicted in the same framework.Comment: 8 pages, 5 figure
Middle School Reform Through Data and Dialogue: Collaborative Evaluation with 17 Leadership Teams
This report describes a 2-year, longitudinal study of one school district‘s effort to link site-based, collaborative evaluation with formal, centralized program evaluation. Participants formed a research team in partnership with a local university. Team members assisted leadership teams in identifying issues for informal, site-based assessments and then used the information to monitor progress toward established goals. Participants collaborated in designing and conducting in formal assessments of student achievement, school climate and safety, discipline, and parent involvement. Leadership teams used these data in developing their school improvement plans. Researchers and administrators used these data to revise the district wide survey. At the end of the 2-year cycle, analysis of school improvement plans showed that collaborative evaluation is creating a connection between dialogue and data. These 17 middle schools are approaching school improvement in a more integrated fashion by actively involving key stakeholders (students, parents, and teachers) in the evaluation process
"If Only They Would Do Their Homework:" Promoting Self-Regulation in High School English Classes
This study examined ways that seven high school English teachers attempted to promote higher levels of self-regulation and students' responses to their efforts. Researchers met with teachers once a week for three months to design higher-order reasoning questions for assignments and quizzes, review student responses and plan instructional strategies. They functioned as participant observers in these sessions examined student homework logs, and interviewed students and teachers. Teachers' responses emphasized the value of collaboration and asking higher-order reasoning questions. Although students continued to articulate performance goals that focused on grades and rewards, their responses demonstrated greater awareness of self-regulation and goal setting. Most students were able to use the language of self-regulation to describe relations among goals, effort, and outcomes. Results of this case study suggest that efforts to promote self-regulation more explicitly within the fabric of lessons might be productive, especially if offered for an extended amount of time
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