F Bayrak | G Kahveci | B Mutlu | M Degertekin | E Demirtas

Conference Object | 2007 | EUROPEAN JOURNAL OF HEART FAILURE6 , pp.34 - 34

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G Mercanoglu | H Uzun | F Mercanoglu | M Gungor

Conference Object | 2007 | EUROPEAN JOURNAL OF HEART FAILURE6 , pp.84 - 84

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Acar, E. | Bingos, C.A. | Bingol, H. | Bro, R. | Yener, B.

Conference Object | 2007 | Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings , pp.4273 - 4276

With a goal of automating visual analysis of electroencephalogram (EEG) data and assessing the performance of various features in seizure recognition, we introduce a mathematical model capable of recognizing patient-specific epileptic seizures with high accuracy. We represent multi-channel scalp EEG using a set of features. These features expected to have distinct trends during seizure and non-seizure periods include features from both time and frequency domains. The contributions of this paper are threefold. First, we rearrange multi-channel EEG signals as a third-order tensor called an Epilepsy Feature Tensor with modes: time epoc . . .hs, features and electrodes. Second, we model the Epilepsy Feature Tensor using a multilinear regression model, i.e., Multilinear Partial Least Squares regression, which is the generalization of Partial Least Squares (PLS) regression to higher-order datasets. This two-step approach facilitates EEG data analysis from multiple electrodes represented by several features from different domains. Third, we identify which features are more significant for seizure recognition. Our results based on the analysis of 19 seizures from 5 epileptic patients demonstrate that multiway analysis of an Epilepsy Feature Tensor can detect (patient-specific) seizures with classification accuracy ranging between 77-96%. © 2007 IEEE Daha fazlası Daha az

Özcan, E. | Yilmaz, M.

Conference Object | 2007 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)4431 LNCS ( PART 1 ) , pp.366 - 375

In this paper, five previous Particle Swarm Optimization (PSO) algorithms for multimodal function optimization are reviewed. A new and a successful PSO based algorithm, named as CPSO is proposed. CPSO enhances the exploration and exploitation capabilities of PSO by performing search using a random walk and a hill climbing components. Furthermore, one of the previous PSO approaches is improved incredibly by means of a minor adjustment. All algorithms are compared over a set of well-known benchmark functions. © Springer-Verlag Berlin Heidelberg 2007.

Demiroglu-Zergeroglu, A | Balcik, P | Attar, R | Basara, B | Cemal, H | Attar, E

Conference Object | 2007 | FERTILITY AND STERILITY88 , pp.366 - 375

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Demiroglu-Zergeroglu, A | Pelin, B | Attar, R | Karatekelioglu, E | Attar, E | Bulun, SE

Conference Object | 2007 | FERTILITY AND STERILITY88 , pp.366 - 375

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Otu, HH | Can, H | Kaya, N | Al-alwan, L | Ozand, P | Inan, MS

Conference Object | 2007 | 2007 IEEE 15TH SIGNAL PROCESSING AND COMMUNICATIONS APPLICATIONS, VOLS 1-3 , pp.366 - 375

In this paper we present comparative expression, functional and pathway analysis of transcriptional profiling of a dysmorphic patient and its matched control using whole blood and fibroblast cells in an attempt to identify genetic changes in Dysmorphic disorders and developmental genes at large. Normalization was done by first finding an invariant set whose expression levels do not change significantly among the chips and then using this set to normalize raw probe values with a smoothing spline invariant set normalization method. Genes with significant change in expression were identified using the lower confidence bound of fold cha . . .nge and these genes were used to perform functional analyses within the context of Gene Ontology categories and biological pathwyas. Our results indicate that genes with altered expression levels are cell-type specific, activated biological categories are mostly developmental related such as skeletal and muscular system and genes dysregulated in both cell types effect cAMP dependent PKA pathway and consequently the CREB cycle Daha fazlası Daha az

Ünverdi, N.Ö. | Ünverdi, N.A. | Canbay, C.

Conference Object | 2007 | 2007 IEEE 15th Signal Processing and Communications Applications, SIU , pp.366 - 375

Optical fibers which are the basic elements of the optical communication technology, that progressed rapidly during the recent years, have become the key element in many industrial applications. In this study, coupled optical waveguides which are in use in many areas such as directional couplers, sensors, multiplexers, amplifiers and filters, were analyzed. The impact of temperature on the performance of circularly bent, bare, weakly guiding, lossless, multimode and slab optical waveguides was investigated. The coupling between pair TE modes was observed to be higher than the coupling between other modes. Coupled optical waveguides . . .were analyzed in an ambient temperature of 100°C. The change in the modal propagation constant was observed to decrease as the ambient temperature increases Daha fazlası Daha az

Küçükaksu, S.

Conference Object | 2007 | Artificial Organs31 ( 11 ) , pp.789 - 791

[No abstract available]

Otu, H.H. | Can, H. | Kaya, N. | Al-alwan, L. | Ozand, P. | Inan, M.S.

Conference Object | 2007 | 2007 IEEE 15th Signal Processing and Communications Applications, SIU , pp.789 - 791

In this paper we present comparative expression, functional and pathway analysis of transcriptional profiling of a dysmorphic patient and its matched control using whole blood and fibroblast cells in an attempt to identify genetic changes in Dysmorphic disorders and developmental genes at large. Normalization was done by first finding an invariant set whose expression levels do not change significantly among the chips and then using this set to normalize raw probe values with a smoothing spline invariant set normalization method. Genes with significant change in expression were identified using the lower confidence bound of fold cha . . .nge and these genes were used to perform functional analyses within the context of Gene Ontology categories and biological pathwyas. Our results indicate that genes with altered expression levels are cell-type specific, activated biological categories are mostly developmental related such as skeletal and muscular system and genes dysregulated in both cell types effect cAMP dependent PKA pathway and consequently the CREB cycle Daha fazlası Daha az

Kirmizibekmez, H | Piacente, S | Bassarello, C | Calis, I

Conference Object | 2007 | PLANTA MEDICA73 ( 9 ) , pp.945 - 945

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Gulsen, G | Ozen, D | Gorcin, B

Conference Object | 2007 | OSTEOPOROSIS INTERNATIONAL18 , pp.945 - 945

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