2,031 research outputs found
Establishment of an optimum heat treatment for use in 718 alloy bellows and gimbal structures Semiannual report, 1 Aug. 1965 - 28 Feb. 1966
Hot cracking tendencies evaluation of fusion welds of Inconel 718 alloy after different heat treatment
Data-aided carrier tracking loops
Power in composite signal sidebands is used to enhance signal-to-noise ratio in carrier tracking loop, thereby reducing radio loss and decreasing probability of receiver error. By adding quadrature channel to phase-lock-loop detector circuit of receiver, dc component can be fed back into carrier tracking loop
Self-Assessment of Health Professionals’ Cultural Competence:Knowledge, Skills, and Mental Health Concepts for Optimal Health Care
Current research often refers to cultural competence to improve health care delivery. In addition, it focuses on the cultural uniqueness of each health service user for optimal personalized care. This study aimed to collect self-assessment data from health professionals regarding their cultural competence and to identify their development needs. A mixed methods design was adopted using the Cultural Competence Self-assessment Checklist of the Central Vancouver Island Multicultural Society. This was translated into Greek, validated, and then shared with health professionals in Cyprus. Subsequently, a semi-structured interview guide was designed and utilized. This was structured in exactly the same question categories as the questionnaire. Data collection took place between October 2021 and May 2022, and convenience sampling was used to recruit 499 health scientists in Cyprus. The sample comprised doctors, nurses, psychologists, midwives, social workers, and physiotherapists. Subsequently, 62 interviews were conducted with participants from the same specialties. The results showed that (compared to other health professionals) nurses and psychologists are more sensitive to issues of cultural competence. It would appear that the more socially oriented sciences had better-prepared healthcare staff to manage diversity in context. However, there is a gap between knowledge and skills when comparing doctors to nurses; they seem to be more skilled and willing to intervene actively in cases of racist behavior or problem-solving. In conclusion, participants identified the importance of their cultural competence; they also realized the importance of optimal planning of personalized health care. There is a significant need for continuous and specialized cultural competence training for all health professions
Multiple inflation and the WMAP 'glitches' II. Data analysis and cosmological parameter extraction
Detailed analyses of the WMAP data indicate possible oscillatory features in
the primordial curvature perturbation, which moreover appears to be suppressed
beyond the present Hubble radius. Such deviations from the usual inflationary
expectation of an approximately Harrison-Zeldovich spectrum are expected in the
supergravity-based 'multiple inflation' model wherein phase transitions during
inflation induce sudden changes in the mass of the inflaton, thus interrupting
its slow-roll. In a previous paper we calculated the resulting curvature
perturbation and showed how the oscillations arise. Here we perform a Markov
Chain Monte Carlo fitting exercise using the 3-year WMAP data to determine how
the fitted cosmological parameters vary when such a primordial spectrum is used
as an input, rather than the usually assumed power-law spectrum. The
'concordance' LCDM model is still a good fit when there is just a 'step' in the
spectrum. However if there is a 'bump' in the spectrum (due e.g. to two phase
transitions in rapid succession), the precision CMB data can be well-fitted by
a flat Einstein-de Sitter cosmology without dark energy. This however requires
the Hubble constant to be h ~ 0.44 which is lower than the locally measured
value. To fit the SDSS data on the power spectrum of galaxy clustering requires
a ~10% component of hot dark matter, as would naturally be provided by 3
species of neutrinos of mass ~0.5 eV. This CHDM model cannot however fit the
position of the baryon acoustic peak in the LRG redshift two-point correlation
function. It may be possible to overcome these difficulties in an inhomogeneous
Lemaitre-Tolman-Bondi cosmological model with a local void, which can
potentially also account for the SN Ia Hubble diagram without invoking cosmic
acceleration.Comment: 27 pages, 18 figures (RevTex); Tables revised to include the \chi^2
and "Akaike information criterion" in comparison of cosmological models; Fits
to WMAP3 EE spectrum shown; Additional references added; Accepted for
publication in in Phys Rev
Complexity is not for free: the impact of component complexity on additive manufacturing build time
‘Complexity for free’ has often been claimed as one of the main advantages of additive manufacturing. Several authors have promoted the idea that additive manufacturing allows the fabrication of complex geometries without any increase in the cost of production. Many examples have proven how additive manufacturing can fabricate complex and intricate geometries. However, little attention has been given to the impact that shape complexity has on building time and/or material consumption. This paper explores the effect of shape complexity on part cost in Fused Deposition Modelling and challenges the mainstream assumption that additive manufacturing technologies provide ‘Complexity for free’. A small scale experiment is presented where different shape complexities were produced and their building time and material consumption analysed. The case for the experiment was a load cell holder for a scientific instrument. Four shape types of the holder namely ‘X’, ‘G1’, ‘G2’ and ‘G3’ were compared. The results show how shape complexity increases both building time and material consumption and therefore have a negative impact on part cost. These findings also highlight the need for a revision of the idea of ‘complexity for free’ and in-depth discussion around the concepts of ‘simple’, ‘basic’ and ‘optimal’ design for Fused Deposition Modelling. In addition, other design considerations relating to shape complexity are raised
Testing Gait with Ankle-Foot Orthoses in Children with Cerebral Palsy by Using Functional Mixed-Effects Analysis of Variance
Dr Morrissey is part funded by the NIHR/HEE Senior Clinical Lecturer scheme. Tis report presents independent research part-funded by the National Institute for Health Research (NIHR) CAT SCL-2013-04-00
On the Melting of Bosonic Stripes
We use quantum Monte Carlo simulations to determine the finite temperature
phase diagram and to investigate the thermal and quantum melting of stripe
phases in a two-dimensional hard-core boson model. At half filling and low
temperatures the stripes melt at a first order transition. In the doped system,
the melting transitions of the smectic phase at high temperatures and the
superfluid smectic (supersolid) phase at low temperatures are either very
weakly first order, or of second order with no clear indications for an
intermediate nematic phase.Comment: 4 pages, 5 figure
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