Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 2441-2460
-
Heuristic Algorithms for Real-Time Unsplittable Data Dissemination Problem
(Springer-Verlag London LTD, 2012)In real-time communication, the timely delivery of the data transfer requests needs to be guaranteed. This work formally introduces the Real-Time Unsplittable Data Dissemination Problem (RTU/DDP), which is a generalization ... -
Biorthogonal Wavelet Vanishing Moment Increment Technique
(IEEE, 2015)Among several lifting style biorthogonal wavelets, Daubechies and Sweldens wavelets provide the maximum number of vanishing moments for the shortest filter length. In this research we propose a method to increase the number ... -
A Work on Real-Time Data Dissemination Problem
(Eurosis, 2011)Multicommodity flow problem deals with delivering multiple data items residing on different source machines on a networking system to their destinations in an efficient manner, while respecting the bandwidth and cost ... -
A Real-Time Data Grid Model With Centralized Job Scheduling
(Eurosis, 2010)A variety of simulators, emulators and real world infrastructures are implemented for Data Grids in the literature. Each of these works defines its own set of services and models. Yet, in the literature, there is no such ... -
Improving Real-Time Data Dissemination Performance By Multi Path Data Scheduling in Data Grids
(Slovak Acad Sciences Inst Informatics, 2015)The performance of data grids for data intensive, real-time applications is highly dependent on the data dissemination algorithm employed in the system. Motivated by this fact, this study first formally defines the real-time ... -
Compact Hardware Implementations of ChaCha, BLAKE, Threefish, and Skein on FPGA
(IEEE-Inst Electrical Electronics Engineers Inc, 2014)The cryptographic hash functions BLAKE and Skein are built from the ChaCha stream cipher and the tweakable Threefish block cipher, respectively. Interestingly enough, they are based on the same arithmetic operations, and ... -
Improvements on deinterleaving of radar pulses in dynamically varying signal environments
(Academic Press Inc Elsevier Science, 2017)An electronic support system receiver which is a passive receiver picks up an interleaved stream of pulses and extracts their pulse parameters. These parameters are sent to a deinterleaving subsystem which sorts them and ... -
A wavelet-based feature set for recognizing pulse repetition interval modulation patterns
(Tubitak Scientific & Technical Research Council Turkey, 2016)This paper presents a new feature set for the problem of recognizing pulse repetition interval (PRI) modulation patterns. The recognition is based upon the features extracted from the multiresolution decomposition of ... -
Design of a Scenario-Based Synthetic Mixed Pulse Generator
(IEEE, 2013)Electronic Support Measures (ESM) plays an important role in modern Electronic Warfare (EW) systems. The main purpose of an ESM system is to intercept as many emissions as it can, and then to deinterleave mixed streams of ... -
A low-area unified hardware architecture for the AES and the cryptographic hash function Grostl
(Academic Press Inc Elsevier Science, 2017)This article describes the design of a compact 8-bit coprocessor for the Advanced Encryption standard (AES) (encryption, decryption, and key expansion) and the cryptographic hash function Grostl. Our Arithmetic and Logic ... -
Hardware design and implementation of a novel ANN-based chaotic generator in FPGA
(Elsevier GMBH, 2016)This paper presents a novel hardware implementation of Artificial Neural Networks (ANNs) for modeling of the Pehlivan-Uyaroglu Chaotic System (PUCS) on Field Programmable Gate Array (FPGA). There are two main parts in the ... -
Spectrum estimation in frequency-domain by subspace and regularization-based algorithms: A survey
(IEEE, 2015)In this survey article, we study methods to identify multi-input/multi-output, discrete-time, linear time-invariant systems from power spectrum measurements. First, we examine subspace-based identification algorithms. A ... -
Positive Realness in Stochastic Subspace Identification: A Regularized and Reweighted Nuclear Norm Minimization Approach
(IEEE, 2015)In this paper, we propose a method to transform a non-positive real transfer function matrix into a positive real one. This problem is of engineering interest and arises when a linear time-invarant dynamics is identified ... -
Subspace-based spectrum estimation by reweighted and regularized nuclear norm minimization in frequency-domain
(IEEE, 2015)In this paper, we study model order choice in subspace-based identification algorithms using nonuniformly spaced spectrum measurements. A critical step in these methods is splitting of two invariant subspaces associated ... -
Shortest Path Algorithms For Petri Nets
(İstanbul University, Fac Engineering, 2016)Petri net is a mathematical and graphical tool for modeling and analysing discrete event systems. This paper focuses on a driving Petri net system from a given initial state to a desired state via minimum number of operations, ... -
Spectrum estimation in innovation models by a nuclear norm optimization based algorithm
(IEEE, 2017)In this paper, identification of multi-input/multioutput (Ml MO) state-space models in the innovation form by a regularized-nuclear norm optimization based subspace algorithm is studied. Parametrization issues arc carefully ... -
Cramer-Rao Bounds for Road Profile Estimation
(IEEE, 2017)In this paper, we study estimator accuracy in road profile identification. We derive a Cramer-Rao lower bound on the variances of all unbiased waviness parameter estimators for an ISO 8608 road profile, widely used in ... -
Spectrum estimation with missing values: A regularized nuclear norm minimization approach
(World Scientific Publ Co Pte LTD, 2016)In this paper, we consider estimation of a power spectrum from noise corrupted spectrum samples on uniform grids of frequencies with missing values. We propose two schemes based on the regularized nuclear norm minimization ... -
Power spectrum estimation with missing values
(IEEE, 2015)In this paper, we consider estimation of a power spectrum from noise corrupted spectrum samples on uniform grids of frequencies with missing values. A scheme based on regularized nuclear norm optimization and subspace ... -
Parallel Track Models from Road Measurements
(IEEE, 2017)In this paper, coherence function estimation for parallel tracks from road measurements is studied. A two-stage scheme is proposed. In the first stage, the measurements are de-trended and periodic components are removed. ...
