| 1. |
- Øvretveit, J
(författare)
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The quality of health purchasing
- 2003
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Ingår i: International journal of health care quality assurance incorporating Leadership in health services. - : Emerald. - 1366-0756. ; 16:2-3, s. 116-27
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Tidskriftsartikel (refereegranskat)abstract
- Much has been written about quality in patient care and clinical support services, but very little about the quality of purchasing. This paper gives an overview of quality issues in purchasing, and offers guidelines and practical steps for purchasers to improve service quality – both their own and their providers’. It defines quality in purchasing and considers how purchasers can influence markets and work with providers to improve health services quality. The paper gives practical guidance for improving quality, which recognises the limited resources and skills which purchasers have for the task. It addresses some issues raised by purchaser/managers: How does a purchasing organisation measure and improve quality? Is there a better way of specifying and monitoring quality than the “shopping‐list of standards” approach – what should be asked of providers? How can information about clinical quality, outcome and costs, be obtained in a form in which reliable comparisons can be made? Is quality accreditation or registration a good predictor of future quality?
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| 2. |
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| 3. |
- Öwall, Viktor
(författare)
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Synthesis of Controllers from a Range of Controller Architectures
- 1994
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- An algorithm specific digital signal processor is a powerful alternative to a general purpose signal processor for demanding specifications such as high throughput, low power, small size, etc. These properties are achieved as the processor architecture is tailored to the algorithm as opposed to the general purpose architecture which must suit a wide range of algorithms. The increased performance is traded for reduced flexibility of the final circuit and an increased design effort. Consequently powerful CAD-tools are needed to decrease the design effort. This thesis presents COMA, a CAD-tool for synthesis of controllers suitable for a wide range of digital signal processing algorithms and application fields. COMA synthesizes a complete controller with all modules and interconnection specifications. COMA has been developed with the intention of being used by an active designer where his knowledge, skills, and experience is best utilized. An automated synthesis process can be performed but is preferably refined to a competitive solution using designer interaction before a circuit is fabricated. The main reason for designing an algorithm specific digital signal processors is the possibility to use an architecture dedicated to the algorithm. Consequently, COMA supports arbitrary datapath architectures and does not impose any restrictions. This is crucial in order to fully exploit the advantages of an algorithm specific design. Results presented in this thesis and the discussion regarding controller architectures show that different controller architectures are suitable for different algorithms and different implementation techniques of the fabricated circuit. Thus, COMA can synthesize a range of controller architectures suitable for these different needs. This approach, I believe, is unique for COMA. Standard controller architectures have been modified to suit application specific digital signal processing design and new solutions have been developed. Using COMA complex algorithm specific digital signals processors for a wide range of applications can be designed with a considerable reduction in design effort compared to a hand made design.
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| 4. |
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| 5. |
- Özdemir, Metin, Associate Professor, 1977-, et al.
(författare)
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Do I belong to this society? The role of positive inter-ethnic climate in class and fairness of teachers
- 2020
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Ingår i: EARA 2020. ; , s. 230-231
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Konferensbidrag (refereegranskat)abstract
- Social alienation and marginalization among immigrant youth are important risk factors for their adjustment and integration into the host society. Thus, it is very essential to develop a comprehensive understanding on why some immigrant youth feel belong to the host society whereas others do not. One of the indicators of societal belongingness among immigrant youth could be related to the nature of their interpersonal experiences in school with their peers and teachers. Immigrant youth who experience positive inter-ethnic contact in class and treated fairly by their teachers may develop greater feelings of class belonging and social trust, and in turn, they may feel part of the host society. To test these conceptual arguments, we examined (1) whether positive inter-ethnic class climate and fair treatment of teachers are associated with societal belonging, and (2) whether adolescents’ feelings of class belonging and social trust explain these links.The data came from the first wave of an ongoing three-year longitudinal study, the Youth & Diversity Project. The analytical sample included youth with at least one parent born outside of Sweden (N = 423; Mage = 13.19, SD = .51; 44% girls). The results of mediation analysis showed that class belonging significantly mediated the association between positive inter-ethnic class climate and societal belonging, βind=.13, z = 3.85, p < .001, 95% CI: .08, .22. In addition, social trust significantly mediated the link between fair treatment of teachers and societal belonging, βind=.04, z = 1.96, p < .05, 95% CI: .01, .08. Overall, these findings suggest that experiencing positive inter-ethnic relationships in school may help immigrant youth develop connection to their immediate social context, and in turn build feelings of societal belonging. Furthermore, fair treatment of teachers may promote social trust among immigrant youth, and indirectly lead to feeling belong to the larger society.
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| 6. |
- Özdogan, Özgecan, et al.
(författare)
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Deep Learning-based Phase Reconfiguration for Intelligent Reflecting Surfaces
- 2020
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Ingår i: 2020 54TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS. - : IEEE. - 9780738131269 ; , s. 707-711
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Konferensbidrag (refereegranskat)abstract
- Intelligent reflecting surfaces (IRSs), consisting of reconfigurable metamaterials, have recently attracted attention as a promising cost-effective technology that can bring new features to wireless communications. These surfaces can be used to partially control the propagation environment and can potentially provide a power gain that is proportional to the square of the number of IRS elements when configured in a proper way. However, the configuration of the local phase matrix at the IRSs can be quite a challenging task since they are purposely designed to not have any active components, therefore, they are not able to process any pilot signal. In addition, a large number of elements at the IRS may create a huge training overhead. In this paper, we present a deep learning (DL) approach for phase reconfiguration at an IRS in order to learn and make use of the local propagation environment. The proposed method uses the received pilot signals reflected through the IRS to train the deep feedforward network. The performance of the proposed approach is evaluated and the numerical results are presented.
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| 7. |
- ÖZEN, MUSTAFA, 1984, et al.
(författare)
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Efficient Millimeter Wave Doherty PA Design Based on a Low-Loss Combiner Synthesis Technique
- 2017
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Ingår i: IEEE Microwave and Wireless Components Letters. - 1558-1764 .- 1531-1309. ; 27:12, s. 1143-1145
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Tidskriftsartikel (refereegranskat)abstract
- We report on a record-efficient 30-GHz 21-dBm differential Doherty PA designed in a 130-nm SiGe process. The output network is designed using a recently developed combiner synthesis technique. This technique enables impedance inversion and parasitic compensation to be integrated in one compact network. As a result, the combiner loss is reduced with 0.3-0.5 dB compared with a conventional Doherty combiner. The measured collector and power-added efficiencies at 6-dB back-off level are 30% and 24.3%, respectively, which further validates the advantages of the design technique.
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| 8. |
- Özgünoglu, Mehmet, 1989, et al.
(författare)
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Numerical Assessment of Cavitation Erosion for a Nozzle Flow Configuration
- 2021
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Ingår i: 11th International Symposium on Cavitation (CAV2021).
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Konferensbidrag (refereegranskat)abstract
- The main purpose of this study is to numerically investigate and predict the cavitation erosion mechanisms in a nozzle flow configuration. To do this, an injector type geometry is numerically investigated with the open-source CFD package OpenFOAM. A compressible Euler approached is applied for two operating conditions, where results are compared with other studies from the literature. Spectral statistics and maximum surface pressure results are compared with experiments. Results show that the proposed modelling approach is capable to explain main cavitation structures that promotes erosion.
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| 9. |
- Özkan, Emre, 1980-, et al.
(författare)
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A Bayesian Approach to Jointly Estimate Tire Radii and Vehicle Trajectory
- 2011
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Ingår i: Proceedings of the International IEEE Conference on Intelligent Transportation Systems. - Washington DC, USA : IEEE conference proceedings. - 9781457721984 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- High-precision estimation of vehicle tire radii is considered, based on measurements on individual wheel speeds and absolute position from a global navigation satellite system (GNSS). The wheel speed measurements are subject to noise with time-varying covariance that depends mainly on the road surface. The novelty lies in a Bayesian approach to estimate online the time-varying radii and noise parameters using a marginalized particle filter, where no model approximations are needed such as in previously proposed algorithms based on the extended Kalman filter. Field tests show that the absolute radius can be estimated with millimeter accuracy, while the relative wheel radius on one axle is estimated with submillimeter accuracy.
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| 10. |
- Özkirimli, Umut, et al.
(författare)
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Cosmopolitanism
- 2016
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Ingår i: The Wiley-Blackwell Encyclopaedia of Race, Ethnicity and Nationalism. - Oxford, UK : John Wiley & Sons, Ltd. - 9781405189781 - 9781118663202
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Bokkapitel (refereegranskat)
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