Browsing by Subject "Topology."

Now showing 1 - 4 of 4

Open Access
Asymptotic theory of characters of the symmetric groups
(1996) Kurtaran, Elif
In this work, we studied the connection between ramified coverings of Riemann surfaces tt : X V oi degree n and characters of symmetric group Sn- We considered asymptotics of characters of as n —> oo and normalized characters of Sn under some restrictions.
Open Access
High power high efficiency microwave power amplifier design using Class-E topology
(2010) Coşkun, Akif Alperen
Power consumption is a major problem in wireless technology. Since power ampli- fier is one of the most power consuming element, efficiency of the power amplifier should be optimized. Switching amplifiers typically offer very high efficiency. As the frequency increases, the efficiency drops. Class-E is a switching amplifier which is suitable for microwave frequencies. It attains a very high efficiency with proper voltage and current characteristics. Different techniques to obtain these characteristics are possible. In this work, we implement a 38 dBm power amplifier at 2 GHz. Different methods are examined to obtain a high efficiency behavior. We obtained a power added efficiency of 60%.
Open Access
Land art on the border between topology and atopology
(2009) Gerekli, Gökçe
The purpose of this study is to discuss the Land Art movement from a topological and atopological perspective. In order to establish an extensive understanding of the matters of topology and atopology, Arkady Plotnitsky’s formalization of quasimathematical thinking, which is derived from Jacques Derrida’s philosophy, is treated in detail. The artistic stance, Robert Smithson, as a major figure of Land Art movement is analyzed both from the artistic and the theoretical perspectives. Thereafter, an algebraic reading of the Smithsonian conceptualization is executed in order to illuminate the liaison between the Land Art movement and the matters of topology and atopology. Finally, the thesis project, Nonlocalizable Displaced Mirrors depicts the whole attitude, which is taken throughout the study, towards the issue of Land Art on the Border between Topology and Atopology.
Open Access
Texture mapping with ray tracing
(1993-10) Akdemir, Uğur
By using texture generation and global illumination techniques, it is possible to produce realistic computer images. Currently, ray tracing is one of the most popular global illumination techniques due to its simplicity, elegance, and easy implementation. In this thesis, texture mapping techniques are used with ray tracing to generate high quality visual effects. The implementation of the mapping process is presented and an approach for combining prefiltering techniques with ray tracing is introduced. General sweep surfaces produced by Topologybook are used for modeling.