18,998 research outputs found

    Male and female emirati medical clerks’ perceptions of the impact of gender and mobility on their professional careers

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    Background: Medicine has undergone profound changes in terms of the number of women entering the profession with postulated implications of this ‘feminization’ for the profession. The present phenomenological study sought to gain insight into the experiences of final year male and female Emirati medical students (clerks) in terms of the impact of gender on their careers. Methods: Semi-structured interviews were conducted with 24 of the 27 clerks. Interviews were transcribed and analyzed thematically. Findings: There was consensus that the gender profile of medicine in the United Arab Emirates was changing as opportunities emerged for Emirati women to branch into different medical specialties. These opportunities were, however, local or regional due largely to travel restrictions on women. Females would thus receive a less highly regarded board certification than males who were encouraged to specialize abroad. On their return, males would be appointed as consultants or as high-ranking administrators. Participants also acknowledged that like their roles in their society, some medical specialties were ‘gendered’, e.g., surgery (male) and pediatrics and obstetrics and gynecology (female). Conclusion: Although religious and cultural traditions around gender and mobility will influence the professional careers of male and female Emirati medical graduates, the situation is, however, changing

    Non-contact temperature measurement requirements

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    The Marshall Space Flight Center is involved with levitation experiments for Spacelab, Space Station, and drop tube/tower operations. These experiments have temperature measurement requirements, that of course must be non-contact in nature. The experiment modules involved are the Acoustic Levitator Furnace (ALF), and the Modular Electromagnetic Levitator (MEL). User requirements of the ALF and drop tube are presented. The center also has temperature measurement needs that are not microgravity experiment oriented, but rather are related to the propulsion system for the STS. This requirement will also be discussed

    Quantum thermometry using the ac Stark shift within the Rabi model

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    This work was supported by the EPSRC, the National Research Foundation and Ministry of Education, Singapore, and the Royal Society.A quantum two-level system coupled to a harmonic oscillator represents a ubiquitous physical system. New experiments in circuit QED and nanoelectromechanical systems (NEMS) achieve unprecedented coupling strength at large detuning between qubit and oscillator, thus requiring a theoretical treatment beyond the Jaynes-Cummings model. Here we present a new method for describing the qubit dynamics in this regime, based on an oscillator correlation function expansion of a non-Markovian master equation in the polaron frame. Our technique yields a new numerical method as well as a succinct approximate expression for the qubit dynamics. These expressions are valid in the experimentally interesting regime of strong coupling at low temperature. We obtain a new expression for the ac Stark shift and show that this enables practical and precise qubit thermometry of an oscillator.Peer reviewe

    The effects of room design on computer-supported collaborative learning in a multi-touch classroom.

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    While research indicates that technology can be useful for supporting learning and collaboration, there is still relatively little uptake or widespread implementation of these technologies in classrooms. In this paper, we explore one aspect of the development of a multi-touch classroom, looking at two different designs of the classroom environment to explore how classroom layout may influence group interaction and learning. Three classes of students working in groups of four were taught in the traditional forward-facing room condition, while three classes worked in a centered room condition. Our results indicate that while the outcomes on tasks were similar across conditions, groups engaged in more talk (but not more off-task talk) in a centered room layout, than in a traditional forward-facing room. These results suggest that the use of technology in the classroom may be influenced by the location of the technology, both in terms of the learning outcomes and the interaction behaviors of students. The findings highlight the importance of considering the learning environment when designing technology to support learning, and ensuring that integration of technology into formal learning environments is done with attention to how the technology may disrupt, or contribute to, the classroom interaction practices

    Quantum-enhanced capture of photons using optical ratchet states

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    Natural and artificial light harvesting systems often operate in a regime where the flux of photons is relatively low. Besides absorbing as many photons as possible it is therefore paramount to prevent excitons from annihilation via photon re-emission until they have undergone an irreversible energy conversion process. Taking inspiration from photosynthetic antenna structures, we here consider ring-like systems and introduce a class of states we call ratchets: excited states capable of absorbing but not emitting light. This allows our antennae to absorb further photons whilst retaining the excitations from those that have already been captured. Simulations for a ring of four sites reveal a peak power enhancement by up to a factor of 35 under ambient conditions owing to a combination of ratcheting and the prevention of emission through dark-state population. In the slow extraction limit the achievable power enhancement due to ratcheting alone exceeds 20%.Comment: major revision with improved model (all data and figures updated

    VPI-7: The First Zincosilicate Molecular Sieve Containing Three-membered T-Atom Rings

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    VPI-7: the first microporous zincosilicate to contain 3-membered rings (3MR) is reported

    Aluminophosphate molecular sieves comprised of hydrated triple crankshaft chains

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    We report the first synthesis of pure aluminophosphate hydrate H2 (AlPO4-H2) and its structure; AlPO4-H2 is constructed exclusively from a hydrated chain building unit that also builds the 18-ring VPI-5 structure and has one-dimensional channels circumscribed by highly elliptical rings consisting often oxygen atoms, implications from the existence of this building unit for the synthesis of novel aluminophosphate molecular sieves and for the synthesis of aluminosilicate and silicate analogues of AlPO4-H2 and VPI-5 are discussed

    FOMC communications and the predictability of near-term policy decisions

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    In February 1994, the FOMC began a new era in transparency, gradually building a communications apparatus that conveys information about the Committee’s decisions and expectations. Has the new apparatus improved the public’s ability to predict FOMC interest rate decisions? New research based on the prices of fed funds futures shows that over the past decade, it has, especially over horizons of two to three months.Federal Open Market Committee ; Federal funds rate
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