Relevant bibliographies by topics / Hybrid sigma model

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Hybrid sigma model'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hybrid sigma model"

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Eckermann, Stephen D., John P. McCormack, Jun Ma, Timothy F. Hogan, and Katherine A. Zawdie. "Stratospheric Analysis and Forecast Errors Using Hybrid and Sigma Coordinates." Monthly Weather Review 142, no. 1 (2014): 476–85. http://dx.doi.org/10.1175/mwr-d-13-00203.1.

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Abstract Past investigations have documented large divergent wind anomalies in stratospheric reanalyses over steep terrain, which were attributed to discretization errors produced by the terrain-following (sigma) vertical coordinate in the forecast model. However, forecasting experiments have reported negligible differences in skill between sigma- and hybrid-coordinate models. This leads to the paradoxical conclusion that discretization errors in the forecast model yield significant stratospheric analysis errors, but insignificant stratospheric forecast errors. The authors reexamine this issue
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Akbar, N., and S. Noor. "Potential Model for \({\mit \Sigma }_{u}^{-}\) Hybrid Meson State." Acta Physica Polonica B 52, no. 9 (2021): 1105. http://dx.doi.org/10.5506/aphyspolb.52.1105.

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Takátsy, János, Péter Kovács, and György Wolf. "Hybrid star properties from an extended linear sigma model." Astronomische Nachrichten 342, no. 1-2 (2021): 271–76. http://dx.doi.org/10.1002/asna.202113918.

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Wang, Fu-Kwun, Chen-Hsoung Hsu, and Gwo-Hshiung Tzeng. "Applying a Hybrid MCDM Model for Six Sigma Project Selection." Mathematical Problems in Engineering 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/730934.

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Six Sigma is a project-driven methodology; the projects that provide the maximum financial benefits and other impacts to the organization must be prioritized. Project selection (PS) is a type of multiple criteria decision making (MCDM) problem. In this study, we present a hybrid MCDM model combining the decision-making trial and evaluation laboratory (DEMATEL) technique, analytic network process (ANP), and the VIKOR method to evaluate and improve Six Sigma projects for reducing performance gaps in each criterion and dimension. We consider the film printing industry of Taiwan as an empirical ca
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Kovács, P., and J. Takátsy. "Hybrid Star Construction with the Extended Linear Sigma Model: Preliminary Results." Acta Physica Polonica B Proceedings Supplement 14, no. 1 (2021): 127. http://dx.doi.org/10.5506/aphyspolbsupp.14.127.

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PAN, Yu-min, Li-yong ZHAO, and Quan-zhu ZHANG. "Gas emission prediction model of hybrid pi-sigma fuzzy neural network." Journal of Computer Applications 32, no. 4 (2013): 1045–49. http://dx.doi.org/10.3724/sp.j.1087.2012.01045.

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Juang, Hann-Ming Henry. "A Multiconserving Discretization with Enthalpy as a Thermodynamic Prognostic Variable in Generalized Hybrid Vertical Coordinates for the NCEP Global Forecast System." Monthly Weather Review 139, no. 5 (2011): 1583–607. http://dx.doi.org/10.1175/2010mwr3295.1.

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A new vertical discretization used in the atmospheric dynamics of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) is illustrated, with enthalpy as the thermodynamic prognostic variable to reduce computation in thermodynamic equations while concerning all gas tracers in the model. Mass, energy, entropy, and angular momentum conservations are utilized as constraints to discretize the vertical integration with a finite-difference scheme. A specific definition of a generalized hybrid vertical coordinate, including sigma, isobaric, and isentropic surfaces, is i
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Beck, Jeffrey, John Brown, Jimy Dudhia, et al. "An Evaluation of a Hybrid, Terrain-Following Vertical Coordinate in the WRF-Based RAP and HRRR Models." Weather and Forecasting 35, no. 3 (2020): 1081–96. http://dx.doi.org/10.1175/waf-d-19-0146.1.

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Abstract A new hybrid, sigma-pressure vertical coordinate was recently added to the Weather Research and Forecasting (WRF) Model in an effort to reduce numerical noise in the model equations near complex terrain. Testing of this hybrid, terrain-following coordinate was undertaken in the WRF-based Rapid Refresh (RAP) and High-Resolution Rapid Refresh (HRRR) models to assess impacts on retrospective and real-time simulations. Initial cold-start simulations indicated that the majority of differences between the hybrid and traditional sigma coordinate were confined to regions downstream of mountai
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JENA, P. K., and L. P. SINGH. "PHASE TRANSITION AND HYBRID STAR IN AN SU(2) CHIRAL SIGMA MODEL." Modern Physics Letters A 17, no. 40 (2002): 2633–46. http://dx.doi.org/10.1142/s0217732302009295.

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We use a modified SU(2) chiral sigma model to study nuclear matter at high density using mean field approach. We also study the phase transition of nuclear matter to quark matter in the interior of highly dense neutron stars. Stable solutions of Tolman–Oppenheimer–Volkoff equations representing hybrid stars are obtained with a maximum mass of 1.69M⊙, radii around 9.3 km and a quark matter core constituting nearly 55–85% of the star radii.
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Jena, P. K., and L. P. Singh. "SU(2) Chiral Sigma Model Study of Phase Transition in Hybrid Stars." Modern Physics Letters A 18, no. 30 (2003): 2135–45. http://dx.doi.org/10.1142/s0217732303011976.

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We use a modified SU(2) chiral sigma model to study nuclear matter component and simple bag model for quark matter constituting a neutron star. We also study the phase transition of nuclear matter to quark matter with the mixed phase characterized by two conserved charges in the interior of highly dense neutron stars. Stable solutions of Tolman–Oppenheimer–Volkoff equations representing hybrid stars are obtained with a maximum mass of 1.67M⊙ and radius around 8.9 km.
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Dissertations / Theses on the topic "Hybrid sigma model"

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Huamán, René Negrón. "On integrable deformations of semi-symmetric space sigma-models." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-06112018-011344/.

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In this thesis we review some aspects of Yang-Baxter deformations of semi-symmetric space sigma models. We start by giving a short review of the sigma model description of superstrings and then we offer a self contained introduction to the Yang-Baxter deformation technique. We then show how to obtain an integrable deformation of the hybrid sigma model. Also, we show that the gravity dual of beta-deformed ABJM theory can be obtained as a Yang-Baxter deformation. This is done by selecting a convenient combination of Cartan generators in order to construct an Abelian r-matrix satisfying the class
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Al, Khamisi Yousuf N. K. "The Development of a Hybrid Knowledge-Based System for Lean Six Sigma Implementation in Healthcare Environment: The Development of a Hybrid Knowledge-Based (KB)/Gauging Absence of Pre-Requisites (GAP)/Analytical Hierarchy Process (AHP) Model for Implementing Lean Six Sigma System in Healthcare Environment." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17451.

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To improve their services and maintain patients’ satisfaction, healthcare organisations have adopted and applied different quality tools and models in recent times, with some even developing their own quality-based initiatives. For example, the approach of Lean Six Sigma (L6σ) has recently been gradually and slowly implemented in healthcare institutions. However, the nature and complexity of healthcare environment which directly impact on humans require leaders to carefully apply appropriate Quality Management (QM) systems suitable for this critical environment. The aim of this research proje
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Al, Dairi Jasim S. S. "The design and development of a knowledge-based lean six sigma maintenance system for sustainable buildings : the design and development of a hybrid Knowledge-Based (KB)/Gauging Absence of Pre-requisites (GAP)/Analytic Hierarchy Process (AHP) model for implementing lean six sigma maintenance system in sustainable buildings' environment." Thesis, University of Bradford, 2017. http://hdl.handle.net/10454/16021.

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The complexity of sustainable building maintenance environment requires managers to define and implement appropriate quality benchmark system suitable for this function. Lean Six Sigma (LSS) is one of the most effective process improvement and optimization philosophy that maintenance organisations can implement in their environment. However, literature review has shown that 90% of failures in LSS implementations are due to lack of readiness to change, the unawareness of the required benchmark organisation capabilities, and improper control of priorities. The contribution of the current researc
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Baskaran, Balakumaar, and Hari Shankar Elumalai. "High-Speed Hybrid Current mode Sigma-Delta Modulator." Thesis, Linköpings universitet, Elektroniksystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80060.

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The majority of signals, that need to be processed, are analog, which are continuous and can take an infinite number of values at any time instant. Precision of the analog signals are limited due to influence of distortion which leads to the use of digital signals for better performance and cost. Analog to Digital Converter (ADC), converts the continuous time signal to the discrete time signal. Most A/D converters are classified into two categories according to their sampling technique: nyquist rate ADC and oversampled ADC. The nyquist rate ADC operates at the sample frequency equal to twice t
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Hsu, Chen-hsoung, and 徐政雄. "A Hybrid MCDM Model Combining DANP with VIKOR for Selecting Six Sigma Projects." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/00541420037773846925.

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博士<br>國立臺灣科技大學<br>工業管理系<br>100<br>Six Sigma is a business strategy that can be applied to process improvement, process management and product design. Because Six Sigma is a project-driven methodology, the projects that provide the maximum financial benefits to the organization must be prioritized. To evaluate the priorities involved in selecting the optimal improvement projects for Six Sigma, we present an analytical framework for Six Sigma project selection (PS). Because PS is a type of multiple-criteria decision-making (MCDM) problem, we propose a hybrid MCDM model that combines a decision-m
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Book chapters on the topic "Hybrid sigma model"

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Nayak, Sarat Chandra, Bijan Bihari Misra, and Himansu Sekhar Behera. "Adaptive Hybrid Higher Order Neural Networks for Prediction of Stock Market Behavior." In Advances in Computational Intelligence and Robotics. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0063-6.ch007.

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This chapter presents two higher order neural networks (HONN) for efficient prediction of stock market behavior. The models include Pi-Sigma, and Sigma-Pi higher order neural network models. Along with the traditional gradient descent learning, how the evolutionary computation technique such as genetic algorithm (GA) can be used effectively for the learning process is also discussed here. The learning process is made adaptive to handle the noise and uncertainties associated with stock market data. Further, different prediction approaches are discussed here and application of HONN for time series forecasting is illustrated with real life data taken from a number of stock markets across the globe.
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Conference papers on the topic "Hybrid sigma model"

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Ghane, Kamran. "A model and system for applying Lean Six sigma to agile software development using hybrid simulation." In 2014 IEEE International Technology Management Conference (ITMC). IEEE, 2014. http://dx.doi.org/10.1109/itmc.2014.6918594.

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Karimirad, Madjid, Erin E. Bachynski, Petter Andreas Berthelsen, and Harald Ormberg. "Comparison of Real-Time Hybrid Model Testing of a Braceless Semi-Submersible Wind Turbine and Numerical Simulations." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61121.

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In this paper, integrated analyses performed in SIMA are compared against experimental results obtained using real-time hybrid model testing (ReaTHM®) carried out in the ocean basin facilities of MARINTEK in October 2015. The experimental data is from a 1:30 scaled model of a semi-submersible wind turbine. Coupled aero-hydro-servo-elastic simulations are performed in MARINTEK’s SIMA software. The present work extends previous results from Berthelsen et al. [1] by including a blade element/momentum (BEM) model for the rotor forces in SIMA and comparing the coupled responses of the system to the
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Lui, Kevin L. F., K. S. Tsang, Mary Fung, et al. "Passive hybrid harmonic mode-locked fiber sigma laser using integrated faraday rotator and SESAM with amplitude modulation stabilization." In 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2017. http://dx.doi.org/10.1109/cleopr.2017.8119075.

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Journal articles
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