1,592 research outputs found

    Optimizing the stake holder’s perspective on enhancing the service quality in health care

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    For the success of health care organizations, accurate measurement of health care service quality is as important as understanding the nature of the service delivery system. Without a valid measure, it would be difficult to establish and implement appropriate tactics or strategies for service quality management. Experts have struggled for decades to formulate a concise, meaningful and generally applicable definition of the quality of health care. However, the complexity and variability of many definitions are very confusing even to experts. Patients, service providers and other parties involved in the process of health care service delivery, understand and describe service quality in different ways. Different perspectives on health care quality lead to different expectations and different methods of quality measurement. Patients tend to evaluate health care quality according to the responsiveness to their specific needs. Most patients define quality as efforts of physicians to do everything possible for a patient. Patient’s expectations about the health care system may differ from those of health care professionals and managers. On the other hand, patients cannot evaluate many technical aspects of health care service quality. Physicians can provide a high level technical quality but still be rated low by patients because of the lack of humanity, responsiveness or satisfaction. For physicians and other health care providers measurement of service quality has typically been driven by medical outcomes. However, outcomes indicative of quality may differ for a patient and physician. Health care administrators often use managerial input measures such as the average number of nursing hours required for an outpatient surgery. This research paper aims to explore the ways and means towards optimizing the competing stake holders perspectives on enhancing the service quality in health care.Service quality; Healthcare; Optimization; India;

    A geometric proof of the equality between entanglement and edge spectra

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    The bulk-edge correspondence for topological quantum liquids states that the spectrum of the reduced density matrix of a large subregion reproduces the thermal spectrum of a physical edge. This correspondence suggests an intricate connection between ground state entanglement and physical edge dynamics. We give a simple geometric proof of the bulk-edge correspondence for a wide variety of physical systems. Our unified proof relies on geometric techniques available in Lorentz invariant and conformally invariant quantum field theories. These methods were originally developed in part to understand the physics of black holes, and we now apply them to determine the local structure of entanglement in quantum many-body systems.Comment: 7 pages, 3 figure

    Vortices and quasiparticles near the "superconductor-insulator" transition in thin films

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    We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic field (B). For this purpose we introduce a new two-fluid formulation consisting of fermionized field induced vortices and electrically neutralized Bogoliubov quasiparticles (spinons) interacting via a long-ranged statistical interaction. This approach allows us to access a novel non-Fermi liquid phase which naturally interpolates between the low B superconductor and the high B normal metal. We discuss the transport, thermodynamic, and tunneling properties of the resulting "vortex metal" phase.Comment: 4 pages, 1 figure, references adde

    Vortex description of the fractionalized phase in exciton bose condensate

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    As a sequel to the previous work [Phys. Rev. B 72, 235104 (2005)] we present a vortex description of the fractionalized phase in exciton bose condensate. Magnetic flux line and monopole of the 3+1D emergent U(1) gauge theory are identified in the exciton picture. A bundle of vortex/anti-vortex pairs of all flavors of excitons corresponds to the magnetic flux line and a point at which the vortices and anti-vortices recombine is identified as magnetic monopole. This completes the magnetic sector of the low energy excitation in the fractionalized phase.Comment: 8 pages, 6 figures; clarification made in introductio

    Active Vibration Control of Structures using an Impedance Matching Control Technique

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    Active vibration control of structures has gained a lot of interest in recent years. This paper presents an active vibration control methodology of a structure using piezoelectric actuators. The proposed methodology is useful in practical applications where the system to be controlled is difficult to model due to the presence of complex boundary conditions. The impedance matching control technique uses a power flow approach wherein the controller is designed such that the power flow into the structure is minimized. The system transfer function is obtained from the experimental collocated actuator/sensor pair data using Eigen Realisation Algorithm (ERA). The controller is designed for the system transfer function according to impedance matching theory. The above approach is targeted towards the vibration control of wind tunnel stings, which suffer from flow-induced vibration. A wind tunnel sting model is designed and fabricated for this study. The real time implementation of the impedance matching controller has been carried out using dSPACE® Digital Signal Processor (DSP) card. The results are encouraging and demonstrate the feasibility of applying this technique in the wind tunne

    Exotic order in simple models of bosonic systems

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    We show that simple Bose Hubbard models with unfrustrated hopping and short range two-body repulsive interactions can support stable fractionalized phases in two and higher dimensions, and in zero magnetic field. The simplicity of the constructed models advances the possibility of a controlled experimental realization and novel applications of such unconventional states.Comment: 4 pages, 4 figure

    Correlated Topological Insulators and the Fractional Magnetoelectric Effect

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    Topological insulators are characterized by the presence of gapless surface modes protected by time-reversal symmetry. In three space dimensions the magnetoelectric response is described in terms of a bulk theta term for the electromagnetic field. Here we construct theoretical examples of such phases that cannot be smoothly connected to any band insulator. Such correlated topological insulators admit the possibility of fractional magnetoelectric response described by fractional theta/pi. We show that fractional theta/pi is only possible in a gapped time reversal invariant system of bosons or fermions if the system also has deconfined fractional excitations and associated degenerate ground states on topologically non-trivial spaces. We illustrate this result with a concrete example of a time reversal symmetric topological insulator of correlated bosons with theta = pi/4. Extensions to electronic fractional topological insulators are briefly described.Comment: 4 pages + ref

    EVALUATION OF IN VITRO ANTIOXIDANT AND ANTIDIABETIC POTENTIALS OF DIFFERENT FRACTIONS OF MAYTENUS HEYNEANA ROOT EXTRACT

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    Objective: In an attempt to explore herbal drug which may become useful in the prevention of diabetes and antioxidant potential by the ethanol extracts of Maytenus heyneana (MH) root belonging to the family Celastraceae and their different fractions were studied.Methods: Different fractionation was done using chloroform, ethyl acetate, and methanol on ethanolic extract of MH and preliminary phytochemical analysis was done by standard methods to identify the presence of important compounds. In vitro antioxidants activities were carried by 2,2-diphenyl- 2-picrylhydrazyl (DPPH) and 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid (ABTS) cation radical scavenging assays. For antidiabetic potential, α-amylase and α-glucosidase enzyme inhibitory studies were carried on different fractions.Results: Phytochemical studies show the presence of alkaloids, flavonoids, phenols, cardiac glycosides, and terpenoids in all fractionations; however, tannins and quinones were present in ethyl acetate fraction and saponins in methanolic fraction. For antioxidant activity, ethyl acetate fraction shows concentration of the sample causing 50% inhibition (IC50) values in 22.31 μg/ml and methanolic fraction shows in 12.82 μg/ml concentrations for DPPH and ABTS radical scavenging assay, respectively. In case of antidiabetic activity, methanolic fraction offered significant result in inhibitory action of α-glucosidase and also for α-amylase assay IC50 (5.28 and 3.14 μg/ml) than other fractions.Conclusion: From the results of our studies, it can be concluded that MH shows antidiabetic and antioxidant values and methanolic fraction of MH could be possessed potential constituents in the prevention of diabetes and antioxidant than other fractions. However, further studies are required to validate

    A Quality of Experience-based Recommender System for E-learning Resources

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    Web services are a rapidly developing and generally acknowledged technology across all areas of management. Independent software systems that can be shared and called from anywhere online. The creation of educational tools (such LMSs, MOOCs, and e-learning) now typically makes use of web services. Having these learning tools readily accessible online is a great method to acquire and disseminate information. The primary objective of this paper is to describe how web services can effectively manage educational resources by leveraging Quality of Experience and to develop an effective E-learning recommender system in the context of web services that help the user choose a course based on his needs in terms of availability, cost, and reputation

    Light trap, an effective component of integrated management of Tuta absoluta(Lepidoptera : Gelechiidae) on Tomato

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    The effectiveness of mass trapping the moths of Tuta absoluta was evaluated using light traps in tomato polyhouse at ICAR-Indian Institute of Horticultural Research, Bengaluru during March - June, 2018. Various colours of light sources were evaluated for their efficacy in attracting the moths. Of different coloured light sources evaluated, yellow and white (bluish) were found relatively effective for attraction of the moths. The efficacy of mass trapping was further evaluated and incandescent yellow bulb of 60 W was found most efficient in attracting both sexes of Tuta moths. Thus light traps can be an effective tool for IPM of this pest on tomato, under polyhouse conditions
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