Transformation Media for Efficient Numerical Modeling of Finite Methods

Electromagnetic Reshaping via Anisotropic Metamaterials Ozgun, Ozlem; Kuzuoğlu, Mustafa (2008-07-11)
Ontology on Semantic Web Doğandağ, Semra; Alpaslan, Ferda Nur (IOS PRESS, NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS, 2007-10-24) OWL (Web Ontology Language) is a markup ontology language based on Description Logics (DL). It is about to become standard ontology language on the web, therefore different communities try to export their ontologies to OWL. Although OWL is highly expressive, it is not always easy to map a formalism to another one. There are some important conceptual modeling problems that should be revisited by OWL. In this paper we have chosen MPEG-7 as an example meta-language. MPEG-7 is written using XML-Schema. We discu...
Analyzing Implicit Aspects and Aspect Dependent Sentiment Polarity for Aspect-based Sentiment Analysis on Informal Turkish Texts Kama, Batuhan; ÖZTÜRK, MURAT; Karagöz, Pınar; Toroslu, İsmail Hakkı; Kalender, Murat (2017-11-09) The web provides a suitable media for users to post comments on different topics. In most of such content, authors express different opinions on different features or aspects of the topic. In aspect based sentiment analysis, it is analyzed as to for which aspect which opinion is expressed. Once aspects are available, the next important step is to match aspects with correct sentiments. In this work, we investigate enhancements for two cases in matching step: extracting implicit aspects, and sentiment words w...
Quasi-steady exchange flow in the bosphorus Gregg, MC; Ozsoy, E; Latif, MA (1999-01-01) Current meter moorings and high-resolution surveys in the Bosphorus reveal important details of the exchange flow. During early September 1994, the flow was quasi-steady and demonstrated strong mixing, particularly in the surface layer after it entered the principal contraction of the strait. Composite Froude numbers in the contraction are lower than expected, consistent with recent modeling that shows friction producing significant deviations from predictions of inviscid two-layer hydraulic theory.
Frequency dependence of the constitutive parameters of causal perfectly matched anisotropic absorbers Kuzuoğlu, Mustafa (1996-12-01) Perfectly matched layers (PML's), which are employed for mesh truncation in the finite-difference time-domain (FDTD) or in finite element methods (FEM's), can be realized by artificial anisotropic materials with properly chosen permittivity and permeability tensors. The tensor constitutive parameters must satisfy the Kramers-Kronig relationships, so that the law of causality holds. These relations are used to relate the real and imaginary parts of the constitutive parameters of the PML media to deduce the a...

Citation Formats

M. Kuzuoğlu, “Transformation Media for Efficient Numerical Modeling of Finite Methods,” 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54611.