The Impact of Education on Fear of Falling in Elderly Women

Context: More than one third of individuals 65 and older fall each year. Approximately 85% of these falls occur in the homes of independent older adults. Falls can lead to an increased fear of falling, defined as a pervasive concern that a fall may occur. Fear of falling can decrease quality of life due to a lower sense of well-being, limiting mobility, and reduction of social interaction. Reduction in activity can result in a sedentary lifestyle and poor balance which increases the risk of falling. Fifty percent of women 75 years and older participate in no physical activity beyond activities of daily living. Older women, on average, participate in half the amount of moderate and vigorous activity as young women. Activity and education based programs have been shown to increase balance confidence in all participants independent of the program they participated in.The aim of the intervention utilized in this study was to decrease fear of falling in elderly women and improve their overall quality of life. Objective: The purpose of the study was to determine how an educational intervention that utilized balance training and home safety assessment would impact fear of falling in elderly women at different activity levels based on the results from activPAL technology. Setting: All subject were tested at Butterfield Trail Village in Fayetteville, AR for all assessments. Participants: Eight older women; 3 in the high activity group, 2 in the moderate activity group, and 3 in the low activity group. The mean age was 79.1 years, the mean height was 161.7 cm, and the mean weight was 61.1 kg. Methods: The participants were recruited from Butterfield Trail senior living community. The participants were given a health history questionnaire and informed consent. The pre-assessment given was the Falls Efficacy Scale- International (FES-I) to determine the participants’ fear of falling. activPAL monitors were given to each participant to wear for 7 days to determine activity level. A one-on-one education session was conducted with each participant after activity assessment. A post FES-I assessment was given after completion of the education session. Main Outcome Measures: A dependent t-test was conducted to compare pre and post FES-I scores. Differences between groups (group x time) were assessed using a repeated measures ANOVA. Statistical significance was set at α = .05. Correlational analysis was conducted to examine the relationship between fear of falling and activity level Results: Statistical significance was not found in any of the outcome measures. Mean FES-I scores dependent t-test: pre 25.5 + 5.9, post 30.5 + 7.2, mean difference -1.9, p-value .58. Repeated measures ANOVA: low activity pre 27.7 + 3.5 post 32.3 + 8.1, moderate activity pre 31.0 + 1.4 post 33.5 + 6.4, high activity pre 19.0 + 3.0 post 26.7 + 7.6. Correlational analysis: a moderate correlation (-.63) was found between activity level and fear of falling. Conclusion: The education intervention utilized in this study that used a variety of materials and techniques was not effective in reducing fear of falling in elderly women across all activity levels

Semiclassical transport in nearly symmetric quantum dots II: symmetry-breaking due to asymmetric leads

In this work - the second of a pair of articles - we consider transport through spatially symmetric quantum dots with leads whose widths or positions do not obey the spatial symmetry. We use the semiclassical theory of transport to find the symmetry-induced contributions to weak localization corrections and universal conductance fluctuations for dots with left-right, up-down, inversion and four-fold symmetries. We show that all these contributions are suppressed by asymmetric leads, however they remain finite whenever leads intersect with their images under the symmetry operation. For an up-down symmetric dot, this means that the contributions can be finite even if one of the leads is completely asymmetric. We find that the suppression of the contributions to universal conductance fluctuations is the square of the suppression of contributions to weak localization. Finally, we develop a random-matrix theory model which enables us to numerically confirm these results.Comment: (18pages - 9figures) This is the second of a pair of articles (v3 typos corrected - including in equations

Mark 3 real-time fringe detection system

A RAM memory built into the Mark 3 decoder module allows the capture of 1 Megabit of data. Data may be collected either in real time or from a pre-recorded tape. Once collected, the data may be retrieved using a standard EIA serial data link. The data may be transmitted to a remote computer for cross correlation processing with similar data from other stations to verify fringes in real time. The data may also be analyzed by a local computer to verify phase calibration, bandpass, format, etc., during a Mark 3 observing session

Mark 3 correlator hardware and software

The Mark 3 correlator system is described in some detail. The correlator system is based on a modular philosophy. Each correlator module independently processes the data from one track pair. Therefore, 28 modules are necessary to complete a full one baseline processor and 84 modules for a full 3 baseline processor. Each correlator module has two interfaces: (1) data and clock from each of the two tracks to be correlated and (2) Computer Automated Measurement and Control (CAMAC) dataway interface to the computer. The processor is organized around the IEEE CAMAC standard architecture, housing 15 correlator modules in each of 6 crates. This allows one pass processing of a full 3 baseline 28 track observation or a 6 baseline (4 station) 14 track observation. The correlator architecture allows easy expansion for up to 8 stations. The computer system is an HP 1000 system utilizing a 16 bit minicomputer with disc and tape peripherals. The processing software is also organized in a modular fashion with many independent but cooperative programs controlling the operation of the Mark 3 processor. Processing time through the correlator is normally real time or faster, with graphics displays providing real time monitor and control of the processing operation

Performance of a high-work low aspect ration turbine tested with a realistic inlet radial temperature profile

Experimental results are presented for a 0.767 scale model of the first stage of a two-stage turbine designed for a high by-pass ratio engine. The turbine was tested with both uniform inlet conditions and with an inlet radial temperature profile simulating engine conditions. The inlet temperature profile was essentially mixed-out in the rotor. There was also substantial underturning of the exit flow at the mean diameter. Both of these effects were attributed to strong secondary flows in the rotor blading. There were no significant differences in the stage performance with either inlet condition when differences in tip clearance were considered. Performance was very close to design intent in both cases

A Proportion Method for Sampling Spittlebug Populations

Author Institution: Department of Entomology, Ohio Agricultural Experiment Station, Wooster, and Department of Mathematics, The Ohio State University, Columbus 1

Characterizing star formation activity in infrared dark cloud MSXDC G048.65-00.29

Infrared Dark Clouds (IRDCs), condensed regions of the ISM with high column densities, low temperatures and high masses, are suspected sites of star formation. Thousands of IRDCs have already been identified. To date, it has not been resolved whether IRDCs always show star formation activity and, if so, if massive star formation (> 8 solar masses) is the rule or the exception in IRDCs. Previous analysis of sub-millimeter cores in the cloud MSXDC G048.65-00.29 (G48.65) indicates embedded star formation activity. To characterize this activity in detail, mid-infrared photometry (3-30 micron) has been obtained with the Spitzer Space Telescope. This paper analyzes the point sources seen in the 24 micron band, combined with counterparts or upper limits at shorter and longer wavelengths. Data points in wavelength bands ranging from 1 up to 850 micron are used to compare each 24 micron source to a set of Spectral Energy Distributions of Young Stellar Object (YSO) models. By assessing the models that fit the data, an attempt is made to identify YSOs as such and determine their evolutionary stages and stellar masses. A total of 17 sources are investigated, 13 of which are classified as YSOs, primarily - but not exclusively - in an early embedded phase of star formation. The modeled masses of the central stellar objects range from sub-solar to ~8 solar masses. Every YSO is at less than 1 pc projected distance from its nearest YSO neighbor. We conclude that IRDC G48.65 is a region of active star formation. We find YSOs in various evolutionary phases, indicating that the star formation in this cloud is not an instantaneous process. The inferred masses of the central objects suggest that this IRDC hosts only low to intermediate mass YSOs and none with masses exceeding ~8 solar masses.Comment: 10 pages, 6 figures; v2: minor editorial changes to match published versio