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Displaying 1-50 out of 98 total
Image Segmentation with Cascaded Hierarchical Models and Logistic Disjunctive Normal Networks
Found in: 2013 IEEE International Conference on Computer Vision (ICCV)
By Mojtaba Seyedhosseini,Mehdi Sajjadi,Tolga Tasdizen
Issue Date:December 2013
pp. 2168-2175
Contextual information plays an important role in solving vision problems such as image segmentation. However, extracting contextual information and using it in an effective way remains a difficult problem. To address this challenge, we propose a multi-res...
 
A framework for applying the principles of depth perception to information visualization
Found in: ACM Transactions on Applied Perception (TAP)
By Abdullah Bulbul, Tolga Capin, Zeynep Cipiloglu Yildiz
Issue Date:October 2013
pp. 1-22
During the visualization of 3D content, using the depth cues selectively to support the design goals and enabling a user to perceive the spatial relationships between the objects are important concerns. In this novel solution, we automate this process by p...
     
A Divide and Conquer Approach for Construction of Large-Scale Signaling Networks from PPI and RNAi Data Using Linear Programming
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
By Oyku Eren Ozsoy, Tolga Can
Issue Date:July 2013
pp. 869-883
Inference of topology of signaling networks from perturbation experiments is a challenging problem. Recently, the inference problem has been formulated as a reference network editing problem and it has been shown that finding the minimum number of edit ope...
     
A Divide and Conquer Approach for Construction of Large-Scale Signaling Networks from PPI and RNAi Data Using Linear Programming
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
By Oyku Eren Ozsoy,Tolga Can
Issue Date:July 2013
pp. 869-883
Inference of topology of signaling networks from perturbation experiments is a challenging problem. Recently, the inference problem has been formulated as a reference network editing problem and it has been shown that finding the minimum number of edit ope...
 
A review of cloud deployment models for e-learning systems
Found in: 2013 43rd Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
By Engin Leloglu,Tolga Ayav,Burak Galip Aslan
Issue Date:June 2013
pp. 1-2
With the significant growth in the cloud-based systems, many industries give their attention to cloud computing solutions. E-learning is a promising application area since its typical requirements such as dynamically allocation of computation and storage r...
 
A Non-Linear/Linear Instruction Set Extension for Lightweight Ciphers
Found in: 2013 IEEE 21st Symposium on Computer Arithmetic (ARITH)
By Susanne Engels,Elif Bilge Kavun,Christof Paar,Tolga Yalcin,Hristina Mihajloska
Issue Date:April 2013
pp. 67-75
Modern cryptography today is substantially involved with securing lightweight (and pervasive) devices. For this purpose, several lightweight cryptographic algorithms have already been proposed. Up to now, the literature has focused on hardware-efficiency w...
 
Large-Scale Signaling Network Reconstruction
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
By Eyup Serdar Ayaz, Seyedsasan Hashemikhabir, Tamer Kahveci, Tolga Can, Yusuf Kavurucu
Issue Date:November 2012
pp. 1696-1708
Reconstructing the topology of a signaling network by means of RNA interference (RNAi) technology is an underdetermined problem especially when a single gene in the network is knocked down or observed. In addition, the exponential search space limits the e...
     
Cloud-Vision: Real-time face recognition using a mobile-cloudlet-cloud acceleration architecture
Found in: 2012 IEEE Symposium on Computers and Communications (ISCC)
By Tolga Soyata,Rajani Muraleedharan,Colin Funai,Minseok Kwon,Wendi Heinzelman
Issue Date:July 2012
pp. 000059-000066
Face recognition applications for airport security and surveillance can benefit from the collaborative coupling of mobile and cloud computing as they become widely available today. This paper discusses our work with the design and implementation of face re...
   
Software Quality in Academic Curriculum: A Case Study in Turkey
Found in: 2012 12th International Conference on Computational Science and Its Applications (ICCSA)
By O. Tolga Pusatli,Sanjay Misra
Issue Date:June 2012
pp. 162-166
A variety of courses are taught in the undergraduate programs of computer science, computer engineering, software engineering and information system engineering. The preferred choices of the software industry are for hiring engineers for their companies fr...
 
Consumer Opinions on Short-Interval Charging for Pay-TV over IPTV
Found in: Advanced Information Networking and Applications Workshops, International Conference on
By Tolga Arul,Abdulhadi Shoufan
Issue Date:March 2012
pp. 147-153
The short-interval charging model is a customer-oriented charging model for pay-TV over Internet Protocol Television (IPTV). In contrast to conventional pay-TV models such as subscription-based pay-TV, pay-per-view and video on demand, this model allows ch...
 
An Intelligent Decision Support Tool for a Travelling Wave Ultrasonic Motor Based on k-Nearest Neighbor Algorithm
Found in: Machine Learning and Applications, Fourth International Conference on
By Seref Sagiroglu,H. Tolga Kahraman,Mehmet Yesilbudak,Ilhami Colak
Issue Date:December 2011
pp. 308-312
Driving frequency, amplitude and phase difference of two-phase sinusoidal voltages are the input parameters which have influence on speed stability of travelling wave ultrasonic motors (TWUSMs).These parameters are also time-varying due to the variations i...
 
RAM-Based Ultra-Lightweight FPGA Implementation of PRESENT
Found in: Reconfigurable Computing and FPGAs, International Conference on
By Elif Bilge Kavun,Tolga Yalcin
Issue Date:December 2011
pp. 280-285
In this paper, two different FPGA implementations of the lightweight cipher PRESENT are proposed. The main design strategy for both designs is the utilization of existing RAM blocks in FPGAs for the storage of internal states, thereby reducing the slice co...
 
A Sensor Based 3D Annotation Authoring Tool for Outdoor Field Applications
Found in: Cyberworlds, International Conference on
By Mustafa Tolga Eren,Selim Balcisoy
Issue Date:October 2011
pp. 17-22
Many professional tasks such as geographic or archaeological surveying require editing and processing spatial data. User generated models act as an underlying level for visualizing annotations. For accurate and fast placement of annotations in the field we...
 
Work in progress -- Modules and laboratories for a pathways course in signals and systems
Found in: Frontiers in Education, Annual
By Kostas Tsakalis,Jayaraman Thiagarajan,Tolga Duman,Martin Reisslein,G. Tong Zhou,XiaoLi Ma,Photini Spanias
Issue Date:October 2011
pp. T2G-1-T2G-2
A gap between theory and practice in signals and systems courses is often reported at many universities as a key problem in recruiting signals and systems students. On the other hand, instructors often cite a lack of fundamental understanding in mathematic...
 
An Online Provenance Service for Distributed Metabolic Flux Analysis Workflows
Found in: Web Services, European Conference on
By Tolga Dalman,Michael Weitzel,Wolfgang Wiechert,Bernd Freisleben,Katharina Nöh
Issue Date:September 2011
pp. 91-98
Scientific applications in the area of Systems Biology become more and more demanding in terms of workflow organization and required computational resources. Metabolic flux analysis with carbon tracer experiments (13C-MFA) is a particularly challenging tec...
 
Model Driven Cache-Aware Scheduling of Object Oriented Software for Chip Multiprocessors
Found in: Digital Systems Design, Euromicro Symposium on
By Tolga Ovatman,Feza Buzluca
Issue Date:September 2011
pp. 719-726
Leveraging utilization of the shared caches of multicore processors is one of the heavily studied topics of today's chip multiprocessing community. Providing a scheduling mechanism that maximizes throughput by reducing miss-rates of shared caches and prese...
 
Adaptive RTP Rate Control Method
Found in: Computer Software and Applications Conference Workshops
By Uras Tos,Tolga Ayav
Issue Date:July 2011
pp. 7-12
In this paper, we present an adaptive method for maximizing network bandwidth utilization for the real-time applications. RTP protocol is chosen as the transport protocol and the network utilization is provided by increasing and decreasing the transmission...
 
Towards an Ultra Lightweight Crypto Processor
Found in: Lightweight Security and Privacy: Devices, Protocols, and Applications, Workshop on
By Begul Bilgin, Elif Bilge Kavun, Tolga Yalcin
Issue Date:March 2011
pp. 76-83
In this paper, a lightweight processor suitable for lightweight cryptographic applications is presented. The processor instruction set is based on the stack-based ZPU architecture. In addition, a simple generic plug-in interface is implemented in order to ...
 
Determining Suitability of Locations for Installation of Solar Power Station Based on Probabilistic Inference
Found in: Machine Learning and Applications, Fourth International Conference on
By Ilhami Colak, Seref Sagiroglu, Mehmet Demirtas, Hamdi Tolga Kahraman
Issue Date:December 2010
pp. 714-719
No summary available.
 
Metabolic Flux Analysis in the Cloud
Found in: eScience, IEEE International Conference on
By Tolga Dalman, Tim Döernemann, Ernst Juhnke, Michael Weitzel, Matthew Smith, Wolfgang Wiechert, Katharina Nöh, Bernd Freisleben
Issue Date:December 2010
pp. 57-64
The MapReduce pattern popularized by Google has successfully been utilized in several scientific applications. In this paper, it is investigated whether a MapReduce approach utilizing on-demand resources from a Cloud is beneficial to perform simulation tas...
 
Users' Expectations on Restructuring OPACs through Social Network Applications
Found in: IEEE-ACM International Conference on Green Computing and Communications and International Conference on Cyber, Physical and Social Computing
By Nevzat Özel, Tolga Çakmak
Issue Date:December 2010
pp. 798-803
The constant developments in web technologies have reconstructed the structure of most web-based applications and systems, causing web users to alter their behaviors/expectations. Playing an important role in the transference of information via multifariou...
 
Using Sequential Context for Image Analysis
Found in: Pattern Recognition, International Conference on
By António R.C. Paiva, Elizabeth Jurrus, Tolga Tasdizen
Issue Date:August 2010
pp. 2800-2803
This paper proposes the sequential context inference (SCI) algorithm for Markov random field (MRF) image analysis. This algorithm is designed primarily for fast inference on an MRF model, but its application requires also a specific modeling architecture. ...
 
Detection of Salient Image Points Using Principal Subspace Manifold Structure
Found in: Pattern Recognition, International Conference on
By António R.C. Paiva, Tolga Tasdizen
Issue Date:August 2010
pp. 1389-1392
This paper presents a method to find salient image points in images with regular patterns based on deviations from the overall manifold structure. The two main contributions are that: (i) the features to extract salient point are derived directly and in an...
 
Image Parsing with a Three-State Series Neural Network Classifier
Found in: Pattern Recognition, International Conference on
By Mojtaba Seyedhosseini, António R.C. Paiva, Tolga Tasdizen
Issue Date:August 2010
pp. 4508-4511
We propose a three-state series neural network for effective propagation of context and uncertainty information for image parsing. The activation functions used in the proposed model have three states instead of the normal two states. This makes the neural...
 
Improving Undersampled MRI Reconstruction Using Non-local Means
Found in: Pattern Recognition, International Conference on
By Ganesh Adluru, Tolga Tasdizen, Ross Whitaker, Edward DiBella
Issue Date:August 2010
pp. 4000-4003
Obtaining high quality images in MR is desirable not only for accurate visual assessment but also for automatic processing to extract clinically relevant parameters. Filtering-based techniques are extremely useful for reducing artifacts caused due to under...
 
A framework for enhancing depth perception in computer graphics
Found in: Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization (APGV '10)
By Abdullah Bulbul, Tolga Capin, Zeynep Cipiloglu
Issue Date:July 2010
pp. 141-148
This paper introduces a solution for enhancing depth perception in a given 3D computer-generated scene. For this purpose, we propose a framework that decides on the suitable depth cues for a given scene and the rendering methods which provide these cues. F...
     
Saliency for animated meshes with material properties
Found in: Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization (APGV '10)
By Abdullah Bulbul, Cetin Koca, Tolga Capin, Ugur Gudukbay
Issue Date:July 2010
pp. 81-88
We propose a technique to calculate the saliency of animated meshes with material properties. The saliency computation considers multiple features of 3D meshes including their geometry, material and motion. Each feature contributes to the final saliency ma...
     
Resistive computation: avoiding the power wall with low-leakage, STT-MRAM based computing
Found in: Proceedings of the 37th annual international symposium on Computer architecture (ISCA '10)
By Engin Ipek, Tolga Soyata, Xiaochen Guo
Issue Date:June 2010
pp. 72-ff
As CMOS scales beyond the 45nm technology node, leakage concerns are starting to limit microprocessor performance growth. To keep dynamic power constant across process generations, traditional MOSFET scaling theory prescribes reducing supply and threshold ...
     
Towards Test Case Generation for Synthesizable VHDL Programs Using Model Checker
Found in: Secure Software Integration and Reliability Improvement Companion, IEEE International Conference on
By Tolga Ayav, Tugkan Tuglular, Fevzi Belli
Issue Date:June 2010
pp. 46-53
VHDL programs are often tested by means of simulations, relying on test benches written intuitively. In this paper, we propose a formal approach to construct test benches from system specification. To consider the real-time properties of VHDL programs, we ...
 
A Discussion on IS and Software Measurement Terminology: Flexibility as an Example
Found in: Computational Science and its Applications, International Conference
By O. Tolga Pusatli, Sanjay Misra
Issue Date:March 2010
pp. 250-254
Closeness in meaning of the terms in the information systems and software engineering may result in discussion of using proper affiliated terms while covering the scope of research. An example is touched in this exploratory study, which discusses flexibili...
 
Design of an Intelligent Decision Making System for a Travelling Wave Ultrasonic Motor
Found in: Machine Learning and Applications, Fourth International Conference on
By Ilhami Colak, Ramazan Bayindir, H. Tolga Kahraman, Mehmet Yesilbudak
Issue Date:December 2009
pp. 669-672
In this study, an intelligent decision making system which determines the compatibility of operating parameters has been designed for the travelling wave ultrasonic motor (TWUSM). The system designed converts input parameters and operating temperature into...
 
Development of an Intelligent Decision Support System for Determining the Efficiency of Shunt Active Power Filter
Found in: Machine Learning and Applications, Fourth International Conference on
By Seref Sagiroglu, Ramazan Bayindir, Orhan Kaplan, Hamdi Tolga Kahraman
Issue Date:December 2009
pp. 626-631
Active power systems have been used in power system intensively. Selection of a suitable filter is very important to solve power quality problems perfectly. Since filter selection depend on a lot of parameters of power system, decision support systems can ...
 
A Parameter Determination System for Wind Turbines Based on Naive Bayes Classification Algorithm
Found in: Machine Learning and Applications, Fourth International Conference on
By Ilhami Colak, Mehmet Demirtas, Güngör Bal, Hamdi Tolga Kahraman
Issue Date:December 2009
pp. 611-616
Among the renewable energy types, wind energy gets popularity in these days. To install a new wind energy turbine, measurement and evaluation of the meteorological data are quite important. In this paper, a novel system is developed for the installation of...
 
A goal- and dependency-directed algorithm for learning hierarchical task networks
Found in: Proceedings of the fifth international conference on Knowledge capture (K-CAP '09)
By Negin Nejati, Tolga Konik, Ugur Kuter
Issue Date:September 2009
pp. 113-120
This paper describes a system for learning domain-dependent knowledge in the form of goal-indexed Hierarchical Task Networks (HTNs). DLIGHT is a goal-directed incremental learning algorithm which observes solution traces and generates rules for solving pro...
     
A Face Tracking Algorithm for User Interaction in Mobile Devices
Found in: Cyberworlds, International Conference on
By Abdullah Bulbul, Zeynep Cipiloglu, Tolga Capin
Issue Date:September 2009
pp. 385-390
A new face tracking algorithm, and a human-computer interaction technique based on this algorithm, are proposed for use on mobile devices. The face tracking algorithm considers the limitations of mobile use case – constrained computational resources and va...
 
3-cycle-free rigidity for multi-agent control systems
Found in: Mediterranean Conference on Control and Automation
By Tolga Eren
Issue Date:June 2009
pp. 258-263
This paper is concerned with rigid formations of mobile autonomous agents. For the problem of relative formation stabilization, Nyquist-like criterion for formation stabilization is used in literature, where spectral properties of the Laplacian matrix play...
 
Content Based Copy Detection with Coarse Audio-Visual Fingerprints
Found in: Content-Based Multimedia Indexing, International Workshop on
By Ahmet Saracoglu, Ersin Esen, Tugrul K. Ates, Banu Oskay Acar, Ãœnal Zubari, Ezgi C. Ozan, Egemen Özalp, A. Aydin Alatan, Tolga Çiloglu
Issue Date:June 2009
pp. 213-218
Content Based Copy Detection (CBCD) emerges as a viable choice against active detection methodology of watermarking. The very first reason is that the media already under circulation cannot be marked and secondly, CBCD inherently can endure various severe ...
 
Information Content-Based Sensor Selection and Transmission Power Adjustment for Collaborative Target Tracking
Found in: IEEE Transactions on Mobile Computing
By Tolga Onel, Cem Ersoy, Hakan Deliç
Issue Date:August 2009
pp. 1103-1116
For target tracking applications, wireless sensor nodes provide accurate information since they can be deployed and operated near the phenomenon. These sensing devices have the opportunity of collaboration among themselves to improve the target localizatio...
 
Development and implementation of e-government services in Turkey: issues of standardization, inclusion, citizen and satisfaction
Found in: Proceedings of the 2nd International Conference on Theory and Practice of Electronic Governance (ICEGOV '08)
By Asim Balci, Elif Sungu, Erhan Kumas, Hamza Tasdelen, Tolga Medeni, Tunc D. Medeni
Issue Date:December 2008
pp. 1-36
This paper discusses the development and implementation of e-government services in Turkey. With the background information about e-government in general, Turkish case of e-government initiatives is discussed with a specific focus on "e-Government Gateway ...
     
A User Modeling Approach to Web Based Adaptive Educational Hypermedia Systems
Found in: Machine Learning and Applications, Fourth International Conference on
By Ilhami Colak, Seref Sagiroglu, H. Tolga Kahraman
Issue Date:December 2008
pp. 694-699
In this paper, a new user modeling approach has been developed to determine the knowledge status of user in Adaptive Educational Hypermedia System (AEHS). The approach is based on forming the domain model and determining relations among elements of that mo...
 
Planning collision-free reaching motions for interactive object manipulation and grasping
Found in: ACM SIGGRAPH 2008 classes (SIGGRAPH '08)
By Amaury Aubel, Daniel Thalmann, Marcelo Kallmann, Tolga Abaci
Issue Date:August 2008
pp. 110-110
We present new techniques that use motion planning algorithms based on probabilistic roadmaps to control 22 degrees of freedom (DOFs) of human-like characters in interactive applications. Our main purpose is the automatic synthesis of collision-free reachi...
     
Implementing fault-tolerance in real-time programs by automatic program transformations
Found in: ACM Transactions on Embedded Computing Systems (TECS)
By Alain Girault, Pascal Fradet, Tolga Ayav
Issue Date:July 2008
pp. 1-43
We present a formal approach to implement fault-tolerance in real-time embedded systems. The initial fault-intolerant system consists of a set of independent periodic tasks scheduled onto a set of fail-silent processors connected by a reliable communicatio...
     
The State of the Art in Mobile Graphics Research
Found in: IEEE Computer Graphics and Applications
By Tolga Capin, Kari Pulli, Tomas Akenine-Möller
Issue Date:July 2008
pp. 74-84
High-quality computer graphics let mobile-device users access more compelling content. Still, the devices' limitations and requirements differ substantially from those of a PC. This survey of mobile graphics research describes current solutions in terms of...
 
Artificial neural network design for behaviours of reinforced concrete column under axial load and comparison of experimental study
Found in: Proceedings of the 9th International Conference on Computer Systems and Technologies and Workshop for PhD Students in Computing (CompSysTech '08)
By Ismail Saritas, M. Sami Donduren, M. Tolga Cogurcu, Mehmet Kamanli, Mevlut Yasar Kaltakci, Mustafa Altin
Issue Date:June 2008
pp. 1-36
Construction (building) sector is one of the sectors which adapt the rapid development of the technology. Especially in frame (skeleton) systems, very serious studies on columns that are vertical conveyors (carriers) are being done. Generally, these studie...
     
Determination of the resistance characteristics of self-compacting concrete samples by artificial neural network
Found in: Proceedings of the 9th International Conference on Computer Systems and Technologies and Workshop for PhD Students in Computing (CompSysTech '08)
By Ismail Saritas, M. Tolga Cogurcu, M. Yasar Kaltakci, Mehmet Kamanli, Mustafa Altin, Sakir Tasdemir
Issue Date:June 2008
pp. 1-36
In this study, in order to determine the resistance characteristics of self-compacting concrete (SCC) samples, experiments were done in the Konya Cement Factory, Ready-mix Concrete Establishment. Four different mixture proportions were chosen in the experi...
     
Hiding Fuzzy Association Rules in Quantitative Data
Found in: Grid and Pervasive Computing, International Conference on
By Tolga Berberoglu, Mehmet Kaya
Issue Date:May 2008
pp. 387-392
Data mining and knowledge discovery from databases are researches in which unknown associations automatically discovered from big amounts of data. Advances in data collection, data distribution and related technologies caused researchers to investigate cur...
 
A Web Based Adaptive Educational System
Found in: Machine Learning and Applications, Fourth International Conference on
By Hamdi Tolga Kahraman, Ilhami Colak, Seref Sagiroglu
Issue Date:December 2007
pp. 286-291
In this study, an adaptive educational system based on AHAM reference was introduced to teach stepper motors being an important topic in the vocational education. In the system, a domain model for stepper motors was designed and a user overlay model was cr...
 
Simulating whitewater rapids in Ratatouille
Found in: ACM SIGGRAPH 2007 sketches on XX (SIGGRAPH '07)
By Darwyn Peachey, Eric Froemling, Tolga Goktekin
Issue Date:August 2007
pp. 68-es
Reproducing the subtleties of a face through animation requires developing a sophisticated character rig. But, creating by hand the inner structure and controls of each character is a very labor-intensive and time-consuming task. We developed an applicatio...
     
An effects recipe for rolling a dough, cracking an egg and pouring a sauce
Found in: ACM SIGGRAPH 2007 sketches on XX (SIGGRAPH '07)
By Apurva Shah, Darwyn Peachey, Jon Reisch, Tolga G. Goktekin
Issue Date:August 2007
pp. 67-es
Reproducing the subtleties of a face through animation requires developing a sophisticated character rig. But, creating by hand the inner structure and controls of each character is a very labor-intensive and time-consuming task. We developed an applicatio...
     
A method for cartoon-style rendering of liquid animations
Found in: Proceedings of the 2007 Conference on Graphics Interface (GI '07)
By Adam W. Bargteil, Ashley M. Eden, James F. O'Brien, Sarah Beth Eisinger, Tolga G. Goktekin
Issue Date:May 2007
pp. 51-55
In this paper we present a visually compelling and informative cartoon rendering style for liquid animations. Our style is inspired by animations such as Futurama,1 The Little Mermaid,2 and Bambi2. We take as input a liquid surface obtained from a three-di...
     
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