Gotowe bibliografie tematyczne / WKB Model

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Gotowa bibliografia na temat „WKB Model”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "WKB Model"

Brink, D. M., i S. Klarsfeld. "WKB treatment of a simple two-dimensional fission model". Physical Review C 32, nr 5 (1.11.1985): 1781–83. http://dx.doi.org/10.1103/physrevc.32.1781.

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Bokes, Pavol. "Heavy-tailed distributions in a stochastic gene autoregulation model". Journal of Statistical Mechanics: Theory and Experiment 2021, nr 11 (1.11.2021): 113403. http://dx.doi.org/10.1088/1742-5468/ac2edb.

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Abstract Synthesis of gene products in bursts of multiple molecular copies is an important source of gene expression variability. This paper studies large deviations in a Markovian drift-jump process that combines exponentially distributed bursts with deterministic degradation. Large deviations occur as a cumulative effect of many bursts (as in diffusion) or, if the model includes negative feedback in burst size, in a single big jump. The latter possibility requires a modification in the WKB solution in the tail region. The main result of the paper is the construction, via a modified WKB scheme, of matched asymptotic approximations to the stationary distribution of the drift-jump process. The stationary distribution possesses a heavier tail than predicted by a routine application of the scheme.

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Mathur, Manikandan, Glenn S. Carter i Thomas Peacock. "Internal Tide Generation Using Green Function Analysis: To WKB or Not to WKB?" Journal of Physical Oceanography 46, nr 7 (lipiec 2016): 2157–68. http://dx.doi.org/10.1175/jpo-d-15-0145.1.

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AbstractAn established analytical technique for modeling internal tide generation by barotropic flow over bottom topography in the ocean is the Green function–based approach. To date, however, for realistic ocean studies this method has relied on the WKB approximation. In this paper, the complete Green function method, without the WKB approximation, is developed and tested, and in the process, the accuracy of the WKB approximation for realistic ridge geometries and ocean stratifications is considered. For isolated Gaussian topography, the complete Green function approach is shown to be accurate via close agreement with the results of numerical simulations for a wide range of height ratios and criticality; in contrast, the WKB approach is found to be inaccurate for small height ratios in the subcritical regime and all tall topography that impinges on the pycnocline. Two ocean systems are studied, the Kaena and Wyville Thomson Ridges, for which there is again excellent agreement between the complete Green function approach and numerical simulations, and the WKB approximate solutions have substantial errors. This study concludes that the complete Green function approach, which is typically only modestly more computationally expensive than the WKB approach, should be the go-to analytical method to model internal tide generation for realistic ocean ridge scenarios.

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BOUCHERES, T., T. COLIN, B. NKONGA, B. TEXIER i A. BOURGEADE. "STUDY OF A MATHEMATICAL MODEL FOR STIMULATED RAMAN SCATTERING". Mathematical Models and Methods in Applied Sciences 14, nr 02 (luty 2004): 217–52. http://dx.doi.org/10.1142/s0218202504003222.

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We study a semiclassical modelization of the interaction of a laser with a mono-atomic gas. The Maxwell equations are coupled with a three-level version of the Bloch equations. Taking into account the specificities of the laser pulse and of the gas, we introduce small parameters and a dimensionless form of the equations. To describe stimulated Raman scattering, we perform a three-scale WKB expansion in the weakly nonlinear regime of geometric optics. The limit system is of Schrödinger–Bloch type. We prove a global existence result for this system and the convergence of its solution toward the solution of the initial Maxwell–Bloch equations, as the parameter of the WKB expansion goes to 0. We put in evidence Raman instability in the one-dimensional case, both theoretically and numerically.

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NAKAMURA, TAKASHI, i SHIN TAKAGI. "MACROSCOPIC QUANTUM NUCLEATION: WKB ANALYSIS OF 3+2−3 MODEL". Modern Physics Letters B 09, nr 10 (30.04.1995): 591–99. http://dx.doi.org/10.1142/s0217984995000541.

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The Lifshitz–Kagan model of macroscopic quantum nucleation is re-examined. The nucleation rate originally proposed by Lifshitz and Kagan is shown to be inapplicable to ordinary laboratory experiments. This problem is circumvented by removing some of the unnecessary assumptions within the WKB approximation. It is also shown that fairly tight bounds on relevant physical parameters may be established without substantial assumptions.

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Nankali, Amir. "Application of the WKB method for an active cochlear model". Journal of the Acoustical Society of America 137, nr 4 (kwiecień 2015): 2205. http://dx.doi.org/10.1121/1.4920022.

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Nielsen, Rasmus, i Sergey Sorokin. "The WKB approximation for analysis of wave propagation in curved rods of slowly varying diameter". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, nr 2167 (8.07.2014): 20130718. http://dx.doi.org/10.1098/rspa.2013.0718.

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The Wentzel–Kramers–Brillouin (WKB) approximation is applied for asymptotic analysis of time-harmonic dynamics of corrugated elastic rods. A hierarchy of three models, namely, the Rayleigh and Timoshenko models of a straight beam and the Timoshenko model of a curved rod is considered. In the latter two cases, the WKB approximation is applied for solving systems of two and three linear differential equations with varying coefficients, whereas the former case is concerned with a single equation of the same type. For each model, explicit formulations of wavenumbers and amplitudes are given. The equivalence between the formal derivation of the amplitude and the conservation of energy flux is demonstrated. A criterion of the validity range of the WKB approximation is proposed and its applicability is proved by inspection of eigenfrequencies of beams of finite length with clamped–clamped and clamped-free boundary conditions. It is shown that there is an appreciable overlap between the validity ranges of the Timoshenko beam/rod models and the WKB approximation.

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Demić, Aleksandar, Vitomir Milanović, Jelena Radovanović i Milenko Musić. "WKB method for potentials unbounded from below". Modern Physics Letters B 30, nr 03 (28.01.2016): 1650003. http://dx.doi.org/10.1142/s0217984916500032.

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Bound states degenerated in energy (and differing in parity) may form in one-dimensional quantum mechanics if the potential is unbounded from below. We focus on symmetric potential and present quasi-exactly solvable (QES) model based on WKB method. The application of this method is limited on slow-changing potentials. We consider the overlap integral of WKB wave functions [Formula: see text] and [Formula: see text] which correspond to energies [Formula: see text] and [Formula: see text], and by setting [Formula: see text], we determine the type of spectrum depending on parameter [Formula: see text] which arises from this method. For finite value [Formula: see text], we show that the entire spectrum will consist of degenerated bound states.

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Schenk, Andreas. "1D analytical model of the metal-semiconductor contact beyond the WKB approximation". Solid-State Electronics 37, nr 9 (wrzesień 1994): 1633–47. http://dx.doi.org/10.1016/0038-1101(94)90046-9.

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Wang, B. B., G. P. Zank, L. Adhikari i L. L. Zhao. "On the Conservation of Turbulence Energy in Turbulence Transport Models". Astrophysical Journal 928, nr 2 (1.04.2022): 176. http://dx.doi.org/10.3847/1538-4357/ac596e.

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Abstract Zank et al. developed models describing the transport of low-frequency incompressible and nearly incompressible turbulence in inhomogeneous flows. The formalism was based on expressing the fluctuating variables in terms of the Elsässar variables and then taking “moments” subject to various closure hypotheses. The turbulence transport models are different according to whether the plasma beta regime is large, of order unity, or small. Here, we show explicitly that the three sets of turbulence transport models admit a conservation representation that resembles the well-known WKB transport equation for Alfvén wave energy density after introducing appropriate definitions of the “pressure” associated with the turbulent fluctuations. This includes introducing a distinct turbulent pressure tensor for 3D incompressible turbulence (the large plasma beta limit) and pressure tensors for quasi-2D and slab turbulence (the plasma beta order-unity or small regimes) that generalize the form of the WKB pressure tensor. Various limits of the different turbulent pressure tensors are discussed. However, the analogy between the conservation form of the turbulence transport models and the WKB model is not close for multiple reasons, including that the turbulence models express fully nonlinear physical processes unlike the strictly linear WKB description. The analysis presented here both serves as a check on the validity and correctness of the turbulence transport models and also provides greater transparency of the energy dissipation term and the “turbulent pressure” in our models, which is important for many practical applications.

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Rozprawy doktorskie na temat "WKB Model"

Campbell, Peter R. M. "An ocean medium pulse propagation model based on linear systems theory and the WKB approximation". Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/27177.

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Negulescu, Claudia. "Asymptotical models and numerical schemes for quantum systems". Toulouse 3, 2005. http://www.theses.fr/2005TOU30221.

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Cette thèse s'intéresse à la modélisation mathématique et à la simulation numérique du transport électronique dans des dispositifs semiconducteurs nanométriques. Différents modèles de transport, destinés à la description des diverses régions d'un transistor MOSFET, sont introduits et analysés. Une attention particulière est portée sur la modélisation des effets quantiques ayant lieu dans ces dispositifs (système auto-consistant de Schrödinger/Poisson avec des conditions aux bords ouvertes)
The present PhD thesis is concerned with the mathematical modelling and the numerical simulation of the electron transport in nanoscale semiconductor devices. Different transport models are introduced and analyzed, aimed to describe the various regions of a MOSFET transistor. We focus our attention particularly on the modelling of quantum effects taking place in such devices (self-consistent Schrödinger-Poisson system with open boundary conditions)

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Ozkok, Yusuf Ibrahim. "Web Based Ionospheric Forecasting Using Neural Network And Neurofuzzy Models". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606031/index.pdf.

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This study presents the implementation of Middle East Technical University Neural Network (METU-NN) models for the ionospheric forecasting together with worldwide usage capability of the Internet. Furthermore, an attempt is made to include expert information in the Neural Network (NN) model in the form of neurofuzzy network (NFN). Middle East Technical University Neurofuzzy Network (METU-NFN) modeling approach is developed which is the first attempt of using a neurofuzzy model in the ionospheric forecasting studies. The Web based applications developed in this study have the ability to be customized such that other NN and NFN models including METU-NFN can also be adapted. The NFN models developed in this study are compared with the previously developed and matured METU-NN models. At this very early stage of employing neurofuzzy models in this field, ambitious objectives are not aimed. Applicability of the neurofuzzy systems on the ionospheric forecasting studies is only demonstrated. Training and operating METU-NN and METU-NFN models under equal conditions and with the same data sets, the cross correlation of obtained and measured values are 0.9870 and 0.9086 and the root mean square error (RMSE) values of 1.7425 TECU and 4.7987 TECU are found by operating METU-NN and METU-NFN models respectively. The results obtained by METU-NFN model is close to those found by METU-NN model. These results are reasonable enough to encourage further studies on neurofuzzy models to benefit from expert information. Availability of these models which already attracted intense international attention will greatly help the related scientific circles to use the models. The models can be architecturally constructed, trained and operated on-line. To the best of our knowledge this is the first application that gives the ability of on-line model usage with these features. Applicability of NFN models to the ionospheric forecasting is demonstrated. Having ample flexibility the constructed model enables further developments and improvements. Other neurofuzzy systems in the literature might also lead to better achievements.

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Wan, Bo. "Improved Usage Model for Web Application Reliability Testing". Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23135.

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Testing the reliability of an application usually requires a good usage model that accurately captures the likely sequences of inputs that the application will receive from the environment. The models being used in the literature are mostly based on Markov chains. They are used to generate test cases that are statistically close to what the applica-tion is expected to receive when in production. In this thesis, we propose a model for reli-ability testing that is created directly from the log file of a web application. Our proposed model is also based on Markov chains and has two components: one component, based on a modified tree, captures the most frequent behaviors, while the other component is another Markov chain that captures infrequent behaviors. The result is a statistically cor-rect model that shows clearly what most users do on the site. The thesis also presents an evaluation method for estimating the accuracy of vari-ous reliability-testing usage models. The method is based on comparison between ob-served users’ traces and traces inferred from the usage model. Our method gauges the accuracy of the reliability-testing usage model by calculating the sum of goodness-of-fit values of each traces and scaling the result between 0 and 1. Finally, we present an experimental study on the log of a real web site and discuss the way to use proposed usage model to generate test sequences, as well as strength and weakness of the model for reliability testing.

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Renganarayanan, Vidya. "Web agent programming model". [Gainesville, Fla.] : University of Florida, 2001. http://purl.fcla.edu/fcla/etd/UFE0000348.

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Thesis (M.S.)--University of Florida, 2001.
Title from title page of source document. Document formatted into pages; contains x, 37 p.; also contains graphics. Includes vita. Includes bibliographical references.

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Silva, Renata Eleuterio da [UNESP]. "As tecnologias da Web Semântica no domínio bibliográfico". Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/93653.

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Made available in DSpace on 2014-06-11T19:26:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2013Bitstream added on 2014-06-13T19:54:59Z : No. of bitstreams: 1 silva_re_me_mar.pdf: 1232145 bytes, checksum: 0769231b6107aa5227dea1ca687c1457 (MD5)
A proposta de uma Web Semântica surgiu como uma alternativa que possibilitaria a interpretação das informações por máquinas, permitindo assim maior qualidade nas buscas e resultados mais relevantes aos usuários. A Web Semântica pode ser utilizada atualmente apenas em domínios restritos, como em sites de comércio eletrônico, devido à dificuldade de representar ontologicamente toda a Web. Objetiva-se verificar como os conceitos, tecnologias, arquiteturas de metadados utilizados pela Web Semântica podem contribuir à construção, modelagem e arquitetura de metadados de catálogos bibliográficos, tomando por base os conceitos definidos no modelo conceitual desenvolvido para a representação do universo bibliográfico denominado Functional Requirements for Bibliographic Records (FRBR), além de explanar sobre a utilização do modelo conceitual como recurso ontológico. A proposta se pauta no estudo de arquiteturas de metadados semânticas, de modo a identificar suas características, funções e estruturas, além de estudar o modelo BIBFRAME (Bibliographic Framework), que se configura como a iniciativa mais recente acerca da implementação de tecnologias da Web à área da Biblioteconomia e Ciência da Informação. Esta pesquisa caracteriza-se por seu caráter teórico-exploratório e foi desenvolvida mediante análise e revisão de literatura sobre seus temas. Os resultados apresentam as principais arquiteturas de metadados utilizadas no contexto da Web Semântica e uma abordagem sobre ontologias, interoperabilidade em sistemas de informação, modelagem de catálogos online, além da apresentação do modelo BIBFRAME, com base em sua importância para a catalogação.
The proposal of a Semantic Web has emerged as an alternative that would allow the interpretation of information by machines, allowing higher quality in the searches and more relevant results to users. Currently, the Semantic Web can only be used in restricted domains, such as e-commerce sites, due to the difficulty of representing the entire Web ontologically. The objective is to see how the concepts, technologies, architectures, and metadata used by the Semantic Web can contribute to build, model and metadata architecture of bibliographic catalogs, based on the concepts defined in the conceptual model developed for the representation of the bibliographic universe called Functional Requirements for Bibliographic Records (FRBR), and explain about the use of the conceptual model and ontological resource. The proposal is guided in the study of semantic metadata architectures, in order to identify its characteristics, functions and structures, in addition to study the model BIBFRAME (Bibliographic Framework), which constitutes the most recent initiative on implementing Web technologies to the Library and Information Science field. This research is characterized by its theoretical and exploratory character was developed through analysis and review of literature on their subjects. The results show the main architectures used in the metadata context of the Semantic Web and an approach to ontology, interoperability in information systems, modeling catalogs online, besides the presentation of the model BIBFRAME, based on their importance to the Cataloging.

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ALHARTHI, KHALID AYED B. "AN ARABIC SEMANTIC WEB MODEL". Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1367064711.

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Saleh, Mohamed M. "Characterization of model behavior and its causal foundation /". Online version, 2002. http://bibpurl.oclc.org/web/31241.

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Kuipers, Johannes Alfonsius Maria. "A two-fluid micro balance model of fluidized beds /". Online version, 1990. http://bibpurl.oclc.org/web/29825.

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Wang, Xin. "Research of mixture of experts model for time series prediction /". Online version, 2005. http://bibpurl.oclc.org/web/25080.

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Książki na temat "WKB Model"

Campbell, Peter R. M. An ocean medium pulse propagation model based on linear systems theory and the WKB approximation. Monterey, Calif: Naval Postgraduate School, 1989.

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Costello, P. J. 3D model databases: The availability of 3D models on the World Wide Web. Loughborough: Computing Services, Loughborough University, 1997.

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service), SpringerLink (Online, red. Web 2.0: The Business Model. Boston, MA: Springer-Verlag US, 2009.

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Zhuge, Hai. The Web Resource Space Model. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-72772-1.

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Gündüz-Ögüdücü, Şule. Web Page Recommendation Models. Cham: Springer International Publishing, 2011. http://dx.doi.org/10.1007/978-3-031-01842-8.

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Chuklin, Aleksandr, Ilya Markov i Maarten de Rijke. Click Models for Web Search. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-031-02294-4.

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Wong, Mabel C. Y. Using virtual documents to model personal Web spaces. Toronto: University of Toronto, Dept. of Computer Science, 1998.

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American Bar Association. Committee on Law of Commerce in Cyberspace. Subcommittee on Interactive Services., red. Web-linking agreements: Contracting strategies and model provisions. Chicago, Ill: American Bar Association, 1997.

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Fausto, Giunchiglia, Tanca Letizia i SpringerLink (Online service), red. Semantic Web Information Management: A Model-Based Perspective. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2010.

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Gašević, Dragan. Model driven architecture and ontology development. Berlin: Springer-Verlag, 2006.

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Części książek na temat "WKB Model"

Holm, Darryl D., Ruiao Hu i Oliver D. Street. "Coupling of Waves to Sea Surface Currents Via Horizontal Density Gradients". W Mathematics of Planet Earth, 109–33. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18988-3_8.

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AbstractThe mathematical models and numerical simulations reported here are motivated by satellite observations of horizontal gradients of sea surface temperature and salinity that are closely coordinated with the slowly varying envelope of the rapidly oscillating waves. This coordination of gradients of fluid material properties with wave envelopes tends to occur when strong horizontal buoyancy gradients are present. The nonlinear models of this coordinated movement presented here may provide future opportunities for the optimal design of satellite imagery that could simultaneously capture the dynamics of both waves and currents directly.The model derived here appears in two levels of approximation: first for rapidly oscillating waves, and then for their slowly varying envelope (SVE) approximation obtained by using the WKB approach. The WKB wave-current-buoyancy interaction model derived here for a free surface with significant horizontal buoyancy gradients indicates that the mechanism for the emergence of these correlations is the ponderomotive force of the slowly varying envelope of rapidly oscillating waves acting on the surface currents via the horizontal buoyancy gradient. In this model, the buoyancy gradient appears explicitly in the WKB wave momentum, which in turn generates density-weighted potential vorticity whenever the buoyancy gradient is not aligned with the wave-envelope gradient.

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Kozlovics, Sergejs. "Models and Model Transformations Within Web Applications". W Communications in Computer and Information Science, 53–67. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40180-5_4.

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Gellert, Ulrich, i Ana Daniela Cristea. "Web Dynpro Model". W Web Dynpro ABAP for Practitioners, 271–308. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38247-5_12.

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Gellert, Ulrich, i Ana Daniela Cristea. "Web Dynpro Model". W Web Dynpro ABAP for Practitioners, 259–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11385-7_12.

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Ouzzani, Mourad, i Athman Bouguettaya. "Web Services Query Model". W Semantic Web Services for Web Databases, 37–56. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-1644-9_3.

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Cordell, Andrea, i Ian Thompson. "Cultural Web". W The Procurement Models Handbook, 162–64. Third edition. | Abingdon, Oxon ; New York, NY : Routledge, 2019. | Earlier editions published as: Purchasing models handbook: a guide to the most popular business models used in purchasing / Andrea Reynolds and Ian Thompson.: Routledge, 2019. http://dx.doi.org/10.4324/9781351239509-49.

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Gaševic, Dragan, Dragan Djuric i Vladan Devedžic. "The Semantic Web". W Model Driven Engineering and Ontology Development, 81–124. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00282-3_3.

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Saleh, Iman. "Model Implementation". W Web-Scale Workflow and Analytics, 57–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24678-9_7.

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Amyot, Daniel, Jean-François Roy i Michael Weiss. "UCM-Driven Testing of Web Applications". W SDL 2005: Model Driven, 247–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11506843_18.

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Rivero, José Matías, Gustavo Rossi, Julián Grigera, Juan Burella, Esteban Robles Luna i Silvia Gordillo. "From Mockups to User Interface Models: An Extensible Model Driven Approach". W Current Trends in Web Engineering, 13–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16985-4_2.

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Streszczenia konferencji na temat "WKB Model"

Tessendorf, Jerry A. "Underwater solar light field: analytical model from a WKB evaluation". W San Diego, '91, San Diego, CA, redaktor Richard W. Spinrad. SPIE, 1991. http://dx.doi.org/10.1117/12.49255.

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Liu, Shuangqin, Douglas A. Gauthier, Ethan Mandelup i Robert D. White. "Experimental Investigation of a Hydromechanical Scale Model of the Gerbil Cochlea". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67778.

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In this research, an uncoiled scale gerbil cochlea is designed and fabricated. The cochlea model is an uncoiled, 16 times scale model of the real gerbil cochlea and has only one duct. Both the basilar membrane width and the duct size vary along the length of the device, in analogy to the physiology. The cochlea duct is filled with silicone oil and driven by a modal exciter (shaker) at different frequencies. The movement of the basilar membrane is measured using laser vibrometry at different locations along the basilar membrane. The ratio of the basilar membrane velocity to drive velocity is computed and plotted. The characteristic frequency of the model varies from 7000 Hz at 2 cm from the base of the cochlea to 350 Hz at the 15 cm from the base. Two different viscosities silicone oil, 20 cSt and 500 cSt are used for the basilar membrane movement measurements. A WKB method is applied to the calculation of the basilar membrane movement of the scale cochlea model, in which the fluid motion is fully three dimensional.

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Jannson, Tomasz, i Joanna Jannson. "Nonuniform Bragg holograms with complex refractive index". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.wh4.

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It has been known for years that the bandwidth of typical Bragg-Lippmann holograms, based on dichromated gelatin (DCG) and PVA-based polymers, is much broader1 than could be expected based on the fully uniform Kogelnik theory. Indeed the typical holographic processing is highly nonuniform, particularly in the z direction; thus both fundamental parameters of Kogelnik’s theory; the coupling constant and off-Bragg parameter, become functions of the z coordinate.1 This fact constitutes the basis for the more general theory based on the well-known (from quantum mechanics) WKB approximation.1 On the other hand, it became evident that the analysis of UV and XUV holograms2 requires the introduction of both a complex bias refractive-index and refractive-index modulation. Unfortunately, the elegant analytic model based on the WKB method does not hold for highly nonuniform Kogelnik parameters. Such a situation, however, is quite typical in DCG holography where an experimental hologram bandwidth can easily exceed 100 nm, while the theoretical bandwidth, based on Kogelnik’s theory, can still be below 20 nm. Therefore, the generalization in both directions, high-grating constant vertical nonuniformity and complex refractive index, is necessary.

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Hillbrand, Christian, i Gerald Frank. "Knowledge-Based Automated Programming of Welding Robots for Lot-Size One Products". W ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82199.

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Welding is one of the most important joining techniques used in the metalworking industries. In order to exploit efficiency potentials to a maximum possible extent, robot systems are adopted to automate the welding process whenever possible. This has become standard for high volume manufacturers like the automotive industry where thousands or millions of products are manufactured in the same or a very similar way. There is, however, a large obstacle for using automated welding robots in industries with highly individualized products: The programming effort for robot systems very often exceeds the manual welding times due to small lot sizes. Therefore this paper proposes an approach to automatically derive welding programs. The building blocks of this technique are an automatic identification of feasible candidate weld joints from a CAD model, a knowledge base and a weld program compiler. After verification of these joints by a design engineer the machine instructions for the robot system have to be derived. Therefore the proposed approach defines the necessary structures of a Welding Expert Knowledge Base (WKB) where the relevant knowledge of a welding engineer designer is modeled in terms of rules of fuzzy rule sets. On top of the WKB we propose a weld program compiler which automatically identifies the sequence of weld joints and the necessary number of welding passes, generates optimized tool paths and finally derives appropriate parameter settings.

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Yohannis, Alfa, Dimitris Kolovos, Antonio García-Domínguez i Carlos Javier Fernández Candel. "Picto web". W MODELS '22: ACM/IEEE 25th International Conference on Model Driven Engineering Languages and Systems. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3550356.3559094.

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Ngoc Bao Bui, Liming Zhu, Yan Liu, V. Tosic i R. Jeffery. "Automating Web Service Development Using a Unified Model". W 2008 Workshop on Models and Model-driven Methods for Enterprise Computing (3M4EC 2008). IEEE, 2008. http://dx.doi.org/10.1109/edocw.2008.19.

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De Carlo, Giuliano, Philip Langer i Dominik Bork. "Advanced visualization and interaction in GLSP-based web modeling". W MODELS '22: ACM/IEEE 25th International Conference on Model Driven Engineering Languages and Systems. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3550355.3552412.

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Rani, Fatima, Pablo Diez, Enrique Chavarriaga, Esther Guerra i Juan de Lara. "Automated migration of EuGENia graphical editors to the web". W MODELS '20: ACM/IEEE 23rd International Conference on Model Driven Engineering Languages and Systems. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3417990.3420205.

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Tosic, Vladimir, Karl Michael Göschka, Aad van Moorsel, Ian Warren i Raymond Wong. "Introduction to the Proceedings of the EDOC 2008 Workshop Middleware for Web Services (MWS) 2008". W 2008 Workshop on Models and Model-driven Methods for Enterprise Computing (3M4EC 2008). IEEE, 2008. http://dx.doi.org/10.1109/edocw.2008.40.

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Ed-douibi, Hamza, Javier Luis Canovas Izquierdo, Francis Bordeleau i Jordi Cabot. "WAPIml: Towards a Modeling Infrastructure for Web APIs". W 2019 ACM/IEEE 22nd International Conference on Model Driven Engineering Languages and Systems Companion (MODELS-C). IEEE, 2019. http://dx.doi.org/10.1109/models-c.2019.00116.

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Raporty organizacyjne na temat "WKB Model"

Haidvogel, Dale B., i Kate Hedstrom. Ocean Model Evaluation Web Site. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1999. http://dx.doi.org/10.21236/ada629851.

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Haidvogel, Dale B. Ocean Model Evaluation Web Site. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2001. http://dx.doi.org/10.21236/ada625349.

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Sriraj, P. S., Kazuya Kawamura, Paul Metaxatos, Joseph Fazio, Chaitanya Pujari, Nahid Parvez Farazi i Pooria Choobchian. Railroad-Highway Crossing Safety Improvement Evaluation and Prioritization Tool. Illinois Center for Transportation, czerwiec 2023. http://dx.doi.org/10.36501/0197-9191/23-009.

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The expected crash frequency model of Illinois Department of Transportation’s Bureau of Design and Environment needed improvement to incorporate track circuitry as well as pedestrian exposure at railroad-highway grade crossings to make the model more comprehensive. The researchers developed, calibrated, and validated three models to predict collision rates at public, at-grade railroad-highway crossings in Illinois’ six-county northeast region for prioritizing railroad-highway crossings for safety improvements. The first model updated B-factors in the existing Illinois model, which was last validated with data from 1968. The second model modified B-factors to include circuitry types given the active maximum traffic control device at the crossing and added another factor (i.e., P-factor) to account for pedestrian daily traffic using the crossing. The third model added a P-factor to the existing US Department of Transportation’s web accident prediction system model to account for daily pedestrian traffic. Using year 2018 validation data, the first model had an r2 of 0.20 with reported collision rates. The second model had an r2 of 0.58 with reported collision rates, while the existing BDE model had an r2 of 0.17 with year 2018 reported collision rates. The third model had an r2 of 0.70 with reported collision rates using 2018 validation data whereas the existing US Department of Transportation’s web-based accident prediction system model had an r2 of 0.50 using year 2018 validation data. The three models are presented in this report along with a digital tool using the second model for illustrative purposes.

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Fishwick, Paul A., John F. Hopkins i Kangsun Lee. On Web-Based Models and Repositories. Fort Belvoir, VA: Defense Technical Information Center, styczeń 2001. http://dx.doi.org/10.21236/ada387468.

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Kirby, Stephen F. Web-Based Mesoscale Model Execution and Evaluation Tool: A Prototype. Fort Belvoir, VA: Defense Technical Information Center, styczeń 2003. http://dx.doi.org/10.21236/ada410678.

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Deshpande, Mukund, i George Karypis. Selective Markov Models for Predicting Web-Page Accesses. Fort Belvoir, VA: Defense Technical Information Center, październik 2000. http://dx.doi.org/10.21236/ada439247.

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Kiefner, John. PR-218-183607-WEB Peer Review of the Plausible Profile (Psqr) Corrosion Assessment Model. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), październik 2019. http://dx.doi.org/10.55274/r0011627.

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Date: October 14, 2019 PRESENTER: John Kiefner, PhD HOSTS: Shahani Kariyawasam, PhD and Shenwei Zhang, TC Energy MODERATOR: Laurie Perry, PRCI CLICK BUY/DOWNLOAD BUTTON TO ACCESS A RECORDING OF THIS WEBINAR The PRCI Corrosion Technical Committee presented the findings from a peer review conducted by a team of world-renowned pipeline experts, led by Dr. John Kiefner, on a new corrosion assessment model developed by TC Energy. The new model utilizes multiple plausible profiles to assess the remaining strength of a corroded pipe. A safe failure pressure is derived from these plausible profiles. This safe pressure can result in fewer excavations needed in response to ILI-identified areas of metal loss. Benefits/Learning Outcomes: - Review of the Psqr Model and how it was formulated and validated - An understanding of how the increased accuracy of the Psqr model can lead to fewer excavations - Peer reviewed suggestions for implementing the Psqr Model Target audience: - Pipeline corrosion personnel - Pipeline integrity management personnel Recommended reading: PR-218-183607-Z01 Peer Review of the Plausible Profile (Psqr) Corrosion Assessment Model

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Whitney, Emily J., J. Ryan Bellmore i Joseph R. Benjamin. User manual for the aquatic trophic productivity model: a river food web simulation model for management and research. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2019. http://dx.doi.org/10.2737/pnw-gtr-973.

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Zhylenko, Tetyana I., Ivan S. Koziy, Vladyslav S. Bozhenko i Irina A. Shuda. Using a web application to realize the effect of AR in assessing the environmental impact of emissions source. [б. в.], listopad 2020. http://dx.doi.org/10.31812/123456789/4408.

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Revolutionary technologies of nowadays are virtual and augmented reality. Humanity's concern for nature may be affected by their ability to combine reality with the simulated effects of human impact on the environment. An urgent task today is creating software applications to assess the impact of human activities on the environment. Recently, most scientists have been trying to model the impact of various factors on environmental change today and for decades using information technology. Visual models are very impressive and they also make a deep impression on the psychological state of the person. This forces people to use natural resources wisely. In this article we have considered the sequential process of building and implementing models for assessing the impact of pollutants from a stationary emission source. We have created a software product that helps to show visually how the emissions of a chemical plant are spreading to the surrounding city. The harmfulness to the city of the cloud into which emissions are converted can also be calculated by the program. We have implemented a number of functions responsible for emission modeling, taking into account different conditions.

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