Ara
Toplam kayıt 96, listelenen: 61-70
Spline based neural networks
(Işık Üniversitesi, 2005-06)
In this thesis, we applied the Catmull-Rom splines and B-splines to the neural networks models, which are Multi Layer Perceptrons, Elman Networks, and Locally Recurrent Neural Networks, as adaptive activation functions. ...
New approaches for channel estimation in wireless communications
(Işık Üniversitesi, 2006-03-10)
This thesis first proposes a conputationally efficient, pilot-aided linear minimum mean square error (MMSE) batch channel estimation algorthm for the orthogonal frequency division multiplexing OFDM systems in unkonown ...
Circuit models with mixed lumped and distributed elements for passive one-port devices
(Işık Üniversitesi, 2006-01-23)
In this thesis, to model measured data obtained from an actual passive one-port device, a circuit modeling method with mixed lumped and distributed elements is proposed. Namely, measured data is modelled by means of its ...
GSM and GPRS security
(Işık Üniversitesi, 2004-09)
In this thesis study, today's popular mobile voice (GSM) and data (GPRS) communication technologies (as an intorduction) and their security were studied. GSM arhitecture, key components of the GSM, security fonctions, and ...
A service quality measurement framework for mobile betting : an assessment of theory and practice
(Işık Üniversitesi, 2008)
Since year 2000 Mobile Services or in other words Value Added Services are continuously growing. Business priority at the emergence of these services has been to launch as many services as possible, regardless of the profits ...
Cost sensitive learning algorithms
(Işık Üniversitesi, 2008)
This thesis studies the cost sensitive learning algorithms that calculate the class learning algorithms errors and costs. Data mining is the automated extraction of hidden predictive information from databases that can be ...
Distributed iterative cluster localization in wireless sensor networks
(Işık Üniversitesi, 2009-01-07)
We designed a distributed algorithm for iterative cluster localization. Because this algorithm is especially designed for large scale networks, increase in the number of sensor nodes has no ine ciency e ect on sensor node ...
Performance and security issues in e-payment systems: pay on-line case
(Işık Üniversitesi, 2006-06)
In this thesis, we report an experience on Performance and Security issues in E-Payment systems. We develop an E-Payment system which covers all introduced performance and security measures written in this thesis. We also ...
Artifact reduction in occluded regions for motion compensated frame interpolation
(Işık Üniversitesi, 2008)
In this paper, we propose a new method to be used in occluded regions for motion compensated frame interpolation. Frame rate up conversion is becoming much more important when usage of digital video systems increase. ...
Performance analysis of static agent architecture with centralized matchmaking
(Işık Üniversitesi, 2005)
Large- scale network environments such as the internet possess the characteristics of distributed data, distributed access and distributed control. This gives users a powerful mechanism for building and integrating large ...