Projection of Supply and Demand of the Physical Therapy Manpower in Taiwan for the Next Twenty Years: Part I. Current Status and Productivity of Physical Therapists and Physical Therapist Assistants

Background and purposes: The purposes of this study were 1) to describe the general productivity and productivities in 4 special fields (neurological, orthopedic, pediatric, and cardiopulmonary) of physical therapists (PT) and physical therapist assistants (PTA) in Taiwan, and 2) to explore the association between characteristics of PT/PTA and productivity. Method: Questionnaire was mailed to the members of all PT and PTA associations in Taiwan. The total mailing number of questionnaire for PT and PTA were 2466 and 1117, respectively. The content of this questionnaire included basic demographic data and information in clinical work. Survey period was between September, 2002 and December, 2002. Results: Total returned questionnaires were 764 from PT and 269 from PTA. General productivity for aPT was 21.39 patients per day, assuming working 8 hours per day. For each specialization field, the productivity of neurological, orthopedic, pediatric, cardiop­ ulmonary patients of each PT per day was 19.72 (sd=9.50), 24.98 (sd=11.07), 15.55 (sd=8.75), and 21.42 (sd=10.63), respectively. For the association between PT characteristics and productivity, working place and PT\u27 s gender were significantly associated with general productivity. PT\u27s age, educational level, and working place were significantly associated with neurological and pediatric productivities. Working experience was also significantly associated with neurological productivity. PT\u27 s characteristics were not significantly associated with orthopedic and cardiopulmonary productivity. General productivity for a PTA was 29.75 patients per day. The productivity of neurological, orthopedic, pediatric, cardiopulmonary patients of each PTA per day was 22.29 (sd=9.50), 35.07 (sd=11.07), 19.48 (sd=8.75), and 19.55 (sd=10.63), respectively. Only PTA\u27s education level was signifi­cantly associated with orthopedic productivity. There were no other significant associations between any of the PTA\u27s characteristics and productivity. Conclusion: This study repported the current status of clincial practice in PT and PTA. There will be a series of articles investigating the projection of supply and demand of physical therapy manpower for the next twenty years

Gait performance and prefrontal cortex activation during single and dual task walking in older adults with different cognitive levels

BackgroundGrowing evidence shows the cognitive function influences the motor performance. The prefrontal cortex (PFC) as a part of the executive locomotor pathway is also important for cognitive function. This study investigated the differences in motor function and brain activity among older adults with different cognitive levels, and examined the significance of cognition on motor functions.MethodsNormal control (NC), individuals with mild cognitive impairment (MCI) or mild dementia (MD) were enrolled in this study. All participants received a comprehensive assessment including cognitive function, motor function, PFC activity during walking, and fear of fall. The assessment of cognitive function included general cognition, attention, executive function, memory, and visuo-spatial. The assessment of motor function included timed up and go (TUG) test, single walking (SW), and cognitive dual task walking (CDW).ResultsIndividuals with MD had worse SW, CDW and TUG performance as compared to individuals with MCI and NC. These gait and balance performance did not differ significantly between MCI and NC. Motor functions all correlated with general cognition, attention, executive function, memory, and visuo-spatial ability. Attention ability measured by trail making test A (TMT-A) was the best predictor for TUG and gait velocity. There were no significant differences in PFC activity among three groups. Nevertheless, the PFC activated more during CDW as compared with SW in individuals with MCI (p = 0.000), which was not demonstrated in the other two groups.ConclusionMD demonstrated worse motor function as compared to NC and MCI. The greater PFC activity during CDW in MCI may be considered as a compensatory strategy for maintaining the gait performance. Motor function was related to the cognitive function, and the TMT A was the best predictor for the gait related performance in present study among older adults

AMiBA Wideband Analog Correlator

A wideband analog correlator has been constructed for the Yuan-Tseh Lee Array for Microwave Background Anisotropy. Lag correlators using analog multipliers provide large bandwidth and moderate frequency resolution. Broadband IF distribution, backend signal processing and control are described. Operating conditions for optimum sensitivity and linearity are discussed. From observations, a large effective bandwidth of around 10 GHz has been shown to provide sufficient sensitivity for detecting cosmic microwave background variations.Comment: 28 pages, 23 figures, ApJ in press

The Yuan-Tseh Lee Array for Microwave Background Anisotropy

The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is the first interferometer dedicated to studying the cosmic microwave background (CMB) radiation at 3mm wavelength. The choice of 3mm was made to minimize the contributions from foreground synchrotron radiation and Galactic dust emission. The initial configuration of seven 0.6m telescopes mounted on a 6-m hexapod platform was dedicated in October 2006 on Mauna Loa, Hawaii. Scientific operations began with the detection of a number of clusters of galaxies via the thermal Sunyaev-Zel'dovich effect. We compare our data with Subaru weak lensing data in order to study the structure of dark matter. We also compare our data with X-ray data in order to derive the Hubble constant.Comment: accepted for publication in ApJ (13 pages, 7 figures); a version with high resolution figures available at http://www.asiaa.sinica.edu.tw/~keiichi/upfiles/AMiBA7/pho_highreso.pd

Do coastal wetlands drive or buffer coastal acidification?

peer reviewe

Sonochemical edge functionalisation of molybdenum disulfide

Liquid-phase exfoliation (LPE) has been shown to be capable of producing large quantities of high-quality dispersions suitable for processing into subsequent applications. LPE typically requires surfactants for aqueous dispersions or organic solvents with high boiling point. However, they have major drawbacks such as toxicity, aggregation during solvent evaporation or the presence of residues. Here, dispersions of molybdenum disulfide in acetone are prepared and show much higher concentration and stability than predicted by Hansen parameter analysis. Aiming to understand those enhanced properties, the nanosheets were characterised using UV-visible spectroscopy, zeta potential measurements, atomic force microscopy, Raman spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and scanning transmission microscopy combined with spatially-resolved electron energy loss spectroscopy. Also, the performance of the MoS2 nanosheets exfoliated in acetone was compared to those exfoliated in isopropanol as a catalyst for the hydrogen evolution reaction. The conclusion from the chemical characterisation was that MoS2 nanosheets exfoliated in acetone have an oxygen edge-functionalisation, in the form of molybdenum oxides, changing its interaction with solvents and explaining the observed high-quality and stability of the resulting dispersion in a low boiling point solvent. Exfoliation in acetone could potentially be applied as a pretreatment to modify the solubility of MoS2 by edge-functionalisation