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Full-Text Articles in Entire DC Network
Plasma Urotensin Ii Levels In Primary Raynaud's Phenomenon And Systemic Sclerosis, Nevzat Gözel, Ahmet Karataş, Meltem Yardim, Mesude Seda Aydoğdu, Ramazan Ulu, Fati̇h Demi̇rcan, Faruk Kilinç, Burak Öz, Emi̇r Dönder, Süleyman Aydin, Süleyman Serdar Koca
Plasma Urotensin Ii Levels In Primary Raynaud's Phenomenon And Systemic Sclerosis, Nevzat Gözel, Ahmet Karataş, Meltem Yardim, Mesude Seda Aydoğdu, Ramazan Ulu, Fati̇h Demi̇rcan, Faruk Kilinç, Burak Öz, Emi̇r Dönder, Süleyman Aydin, Süleyman Serdar Koca
Turkish Journal of Medical Sciences
Background/aim: The pathogenesis of Raynaud's phenomenon (RP) has not yet been fully elucidated. RP is characterized by exaggerated cold-induced vasoconstriction. Urotensin II (UII) is a potent vasoconstrictor. The aim of the present study was to evaluate plasma UII levels in both primary RP and secondary RP associated with systemic sclerosis (SSc).Materials and methods: Fifteen patients with primary RP, 30 patients with RP secondary to SSc, and 30 healthy controls (HC) were included in the study. Raynaud condition scores (RCS) were determined in the primary RP and SSc groups. Modified Rodnan skin score (MRSS) was determined for the SSc patients. Plasma …
Expression Profiles Of Cd11b, Galectin-1, Beclin-1, And Caspase-3 In Nasal Polyposis, Alper Di̇lci̇, Nuray Varol, İlker Kiliçcioğlu, Ece Konac, Utku Aydi̇l, Yusuf Kizil, Süleyman Sabri̇ Uslu
Expression Profiles Of Cd11b, Galectin-1, Beclin-1, And Caspase-3 In Nasal Polyposis, Alper Di̇lci̇, Nuray Varol, İlker Kiliçcioğlu, Ece Konac, Utku Aydi̇l, Yusuf Kizil, Süleyman Sabri̇ Uslu
Turkish Journal of Medical Sciences
Background/aim: Nasal polyposis is a chronic inflammatory disease affecting the paranasal sinuses and nasal mucosae. It is thought that genetic and molecular mechanisms in inflammatory and apoptotic pathways are the main factors in the etiopathogenesis of nasal polyposis. The aim of this study was to investigate the expression patterns of CD11b, galectin-1, beclin-1, and caspase-3 in nasal polyps.Materials and methods: The mRNA expression levels of CD11b, galectin-1, beclin-1, and caspase-3 protein and western blot analysis of caspase-3 protein were evaluated in inferior turbinate mucosae and nasal polyp tissues.Results: CD11b expression was markedly higher in nasal polyp tissues when compared to …
Concordance Of Immunohistochemistry Between Core Needle Biopsy And Surgical Resection Of Breast Cancer, Faruk Erdem Kombak, Hülya Şahi̇n, Hande Mollamemi̇şoğlu, İdri̇s Önem, Handan Kaya, Onur Buğdayci, Mustafa Erki̇n Aribal
Concordance Of Immunohistochemistry Between Core Needle Biopsy And Surgical Resection Of Breast Cancer, Faruk Erdem Kombak, Hülya Şahi̇n, Hande Mollamemi̇şoğlu, İdri̇s Önem, Handan Kaya, Onur Buğdayci, Mustafa Erki̇n Aribal
Turkish Journal of Medical Sciences
Background/aim: The purpose of this study was to evaluate the concordance of immunohistochemical (IHC) parameters of breast lesions between the core needle biopsy (CNB) and the surgical resection specimen. Materials and methods: CNB and resection specimens of female patients were retrospectively analyzed. ER, PR, HER-2, and Ki-67 parameters were compared for each patient. A total of 284 cases were assessed. Forty-one and 48 cases were excluded from the HER-2 and Ki-67 examinations, respectively, because the CNBs did not allow for IHC. Results: Concordance rates were 93.3% for ER, 89.4% for PR, 90.1% for HER-2, and 80.9% for Ki-67.Conclusion: CNB is …
Tnf-Alpha 863c > A Promoter And Tnfrii 196t > G Exonic Variationsmay Be Risk Factors For Juvenile Idiopathic Arthritis, Bahadir Batar, Sezen Özman, Kenan Barut, Özgür Kasapçopur, Mehmet Güven
Tnf-Alpha 863c > A Promoter And Tnfrii 196t > G Exonic Variationsmay Be Risk Factors For Juvenile Idiopathic Arthritis, Bahadir Batar, Sezen Özman, Kenan Barut, Özgür Kasapçopur, Mehmet Güven
Turkish Journal of Medical Sciences
Background/aim: Juvenile idiopathic arthritis (JIA) is a chronic complex autoimmune disease. Genetic and environmental factors increase the risk of JIA. It is accepted that alterations in immune system pathways play an important role in the pathogenesis of JIA. The aim of the study was to investigate the possible association between immune system regulatory gene polymorphisms and JIA in Turkish patients. Materials and methods: We analyzed eight polymorphisms, TNF-alpha-863 C > A, TNFRII 196 T > G, IL2-631 G > A, IL13-1112 C > T, CCR2 190 G > A, CCR5delta32, CTLA4-1661 A > G, and PTPN22 1858 C > T, in 76 patients with JIA and in …
Biomarker And Shear Stress In Secondary Pediatric Pulmonary Hypertension, Ayhan Pektaş, Fatma Rana Olguntürk, Serdar Kula, Erman Çi̇lsal, Ayşe Deni̇z Oğuz, Fatma Sedef Tunaoğlu
Biomarker And Shear Stress In Secondary Pediatric Pulmonary Hypertension, Ayhan Pektaş, Fatma Rana Olguntürk, Serdar Kula, Erman Çi̇lsal, Ayşe Deni̇z Oğuz, Fatma Sedef Tunaoğlu
Turkish Journal of Medical Sciences
Background/aim: Endothelial dysfunction, tissue damage, inflammation, and microthrombosis are involved in the pathogenesis of pulmonary hypertension (PH), which may be present as a complication of congenital heart diseases. This study aims to identify how indicators of endothelial dysfunction (shear stress), tissue damage (brain natriuretic peptide and troponin T), inflammation (C-reactive protein (CRP)), and microthrombosis (D-dimer and von Willebrand factor) are altered in children with congenital left-to-right shunting. Materials and methods: This is a review of 25 children who developed PH due to congenital left-to-right shunting, 40 children who underwent corrective surgery for congenital left-to-right shunting, and 40 healthy children.Results: Serum …
Interleukin-6 And Hepcidin Expression Changes In Cardiac Tissue Of Long-Term Trained And Untrained Rats After Exhaustive Exercise, Badegül Sarikaya, Ali̇ Doğan Dursun, Elçi̇n Yağmur Taylan Deveden, Lamia Pinar
Interleukin-6 And Hepcidin Expression Changes In Cardiac Tissue Of Long-Term Trained And Untrained Rats After Exhaustive Exercise, Badegül Sarikaya, Ali̇ Doğan Dursun, Elçi̇n Yağmur Taylan Deveden, Lamia Pinar
Turkish Journal of Medical Sciences
Background/aim: Exercise benefits the cardiovascular system, but strenuous exercise can cause cardiac damage and induce cytokine production, particularly that of interleukin-6 (IL-6). Hepcidin, which is primarily regulated by IL-6, increases after exercise. Hepcidin is a possible protective factor against the adverse effects of strenuous exercise such as oxidative stress. The aim of the study is to reveal that training increases hepcidin and attenuates increased levels of IL-6 in the hearts of exhaustively exercised rats by comparing the IL-6 and hepcidin mRNA expression levels in trained and untrained groups.Materials and methods: Thirty male Wistar albino rats were assigned to the following …
Analysis Of Fancc Gene Mutations (Ivs4+4a>T, Del322g, And R548x)In Patients With Fanconi Anemia In Pakistan, Iram Aftab, Saima Iram, Saba Khaliq, Muhammad Israr, Nadir Ali, Shah Jahan, Shabbir Hussain, Shagufta Khaliq, Shahida Mohsin
Analysis Of Fancc Gene Mutations (Ivs4+4a>T, Del322g, And R548x)In Patients With Fanconi Anemia In Pakistan, Iram Aftab, Saima Iram, Saba Khaliq, Muhammad Israr, Nadir Ali, Shah Jahan, Shabbir Hussain, Shagufta Khaliq, Shahida Mohsin
Turkish Journal of Medical Sciences
Background/aim: Fanconi anemia (FA) is an autosomal recessive disease determined by mutations in at least 16 genes, with distinct distributions in different populations. To the best of our knowledge, there are no reports regarding the molecular basis of the disease in FA patients in Pakistan. The current study aimed to determine the frequency of FANCC gene mutations, i.e. IVS4+4A>T, del322G, and R548X, in FA patients. Materials and methods: Genomic DNA was obtained from 36 FA patients. All samples were analyzed by polymerase chain reaction and restriction fragment length polymorphism techniques. Results: Mutation IVS4+4A>T was identified in 26 (72.2%) …
Profile Of Pot1 As Telomerase Shelterin Component Discriminatesbetween Cervical Cancer And Normal Cervical Cells, Andreas Budi Wijaya, Furqan Hidayatullah, Verina Veronica Setyabudhi, Faizal Reza Pahlevi, Rasyad Indra, Tatit Nurseta
Profile Of Pot1 As Telomerase Shelterin Component Discriminatesbetween Cervical Cancer And Normal Cervical Cells, Andreas Budi Wijaya, Furqan Hidayatullah, Verina Veronica Setyabudhi, Faizal Reza Pahlevi, Rasyad Indra, Tatit Nurseta
Turkish Journal of Medical Sciences
Background/aim: Telomerase activity is influenced by hTERT transcriptional regulation, shelterin, and posttranscriptional alternative splicing. Telomerase shelterin such as POT1 is highly correlated with various cancers. However, the profile of POT1 in cervical cancer has not been clearly identified. Therefore, it is important to identify its profile in cervical cancer biopsy tissue and normal cervical smears. Materials and methods: Biopsy tissue of cervical cancer patients and normal cervical smears were characterized using SDS-PAGE and western blot. Sixteen biopsy tissues of cervical cancer patients and 15 normal cervical smears were measured for POT1 level using ELISA. Results: The inline band at 70 …
Incidence Of Cancer In The Turkish Republic Of Northern Cyprus, Ruqiya Pervaiz, Pinar Tulay, Faisal Faisal, Nedime Serakinci
Incidence Of Cancer In The Turkish Republic Of Northern Cyprus, Ruqiya Pervaiz, Pinar Tulay, Faisal Faisal, Nedime Serakinci
Turkish Journal of Medical Sciences
ackground/aim: This study analyzed the incidence, trends, and common types of cancer in the Turkish Republic of Northern Cyprus (TRNC). Materials and methods: This study is based on data collected from the office of the North Cyprus Cancer Registry, Ministry of Health, for 2007-2012. Data were arranged on the basis of age group, sex, and cancer site. Age standardized incidence rates (ASRs) were estimated with the world standard population. EVIEWS (version 9) software was used for statistical analysis. Results: Of 1395 registered cases, 52.33% (730) were reported in men and 47.67% (665) in women. The crude incidence rate was 96.41 …
Genetic Association Analysis Of Erbb4 Polymorphisms With The Risk Ofschizophrenia Susceptibility In A Jordanian Population Of Arab Descent, Laith Aleitan, Sahar Al-Habahbeh, Rami Alkhatib
Genetic Association Analysis Of Erbb4 Polymorphisms With The Risk Ofschizophrenia Susceptibility In A Jordanian Population Of Arab Descent, Laith Aleitan, Sahar Al-Habahbeh, Rami Alkhatib
Turkish Journal of Medical Sciences
Background/aim: The ERBB4 gene encodes a transmembrane tyrosine kinase and is considered to be one of the risk genes of schizophrenia. Although there is evidence of the roles of genes and the environment in the etiology of schizophrenia, a comprehensive biological and genetic background of the disease is still lacking. The aim of this study is to assess whether genetic variation in the human ERBB4 gene is associated with vulnerability to schizophrenia in the Jordanian Arab population. Materials and methods: A total of 185 inpatients with schizophrenia participated in this study and 195 healthy genetically homogeneous individuals were also used …
Meloxicam And Diclofenac Do Not Change Vegf And Pdgf-Abserum Levels Of Platelet-Rich Plasma, Burkay Utku, Gürhan Dönmez, Gülri̇z Eri̇şgen, Şenay Akin, Ali̇ Haydar Demi̇rel, Feza Korkusuz, Mahmut Nedi̇m Doral
Meloxicam And Diclofenac Do Not Change Vegf And Pdgf-Abserum Levels Of Platelet-Rich Plasma, Burkay Utku, Gürhan Dönmez, Gülri̇z Eri̇şgen, Şenay Akin, Ali̇ Haydar Demi̇rel, Feza Korkusuz, Mahmut Nedi̇m Doral
Turkish Journal of Medical Sciences
Background/aim: Platelet-rich plasma (PRP) application has gained widespread interest for musculoskeletal injuries. Nonsteroidal antiinflammatory drugs are frequently used in sports medicine before and/or after PRP application. Our study seeks to determine whether serum levels of platelet-derived growth factor-AB (PDGF-AB) and vascular endothelial growth factor (VEGF) levels of PRP would be affected by nonsteroidal antiinflammatory drugs. Materials and methods: Two different final concentrations of diclofenac (0.5 6mu;g mL-1 and 2.5 6mu;g mL-1), meloxicam (0.8 μg mL-1 and 2.0 μg mL-1), and acetylsalicylic acid (final concentration 450 μm) were obtained in separate tubes with PRPs prepared from 20 healthy male volunteers. Medicine-free …
Molecular Characteristics And Antibiotic Resistance Of Acinetobacter Baumanniibeta-Lactamase-Producing Isolates, A Predominance Of Intrinsic Blaoxa-51, And Detection Oftem And Ctx-M Genes, Amir Ibrahimagic, Farah Kamberovic, Selma Uzunovic, Branka Bedenic, Emina Idrizovic
Molecular Characteristics And Antibiotic Resistance Of Acinetobacter Baumanniibeta-Lactamase-Producing Isolates, A Predominance Of Intrinsic Blaoxa-51, And Detection Oftem And Ctx-M Genes, Amir Ibrahimagic, Farah Kamberovic, Selma Uzunovic, Branka Bedenic, Emina Idrizovic
Turkish Journal of Medical Sciences
Background/aim: The aim of this study was to determine the molecular characteristics and antibiotic resistance of 13 (10 inpatient and three outpatient) Acinetobacter baumannii beta-lactamase-producing isolates collected in Bosnia and Herzegovina between December 2009 and May 2010. Materials and methods: Susceptibility testing was performed by disk diffusion and broth microdilution methods. The modified Hodge and combined disk test with EDTA/phenylboronic acid was used to screen for carbapenemase production. Production of extended spectrum beta-lactamases (ESBLs) was determined by double-disk synergy test. PCR was used to detect blaESBL/blacarb genes. Results: Ten (22.2%) inpatient and three (13.6%) outpatient isolates produced beta-lactamases, ESBLs, or …
Universal And Stable Medical Image Generation For Tissue Segmentation (The Unistable Method), Ihab Elaff, Ali El-Kemany, Mohammed Kholif
Universal And Stable Medical Image Generation For Tissue Segmentation (The Unistable Method), Ihab Elaff, Ali El-Kemany, Mohammed Kholif
Turkish Journal of Electrical Engineering and Computer Sciences
Segmentation of medical images has been one of the most important research areas because of its impact in modeling and diagnosing the structure and the functions of various organs. The lack of unique solution for the segmentation problem of medical images is caused by the wide range of selections among different medical imaging modalities and clustering methods where each setting has its own estimates for solving this problem. The unistable method is a novel method that generates enhanced images with high contrast, which can reduce boundary overlap between different tissues. This is accomplished by fusion of different clustering maps, which …
Iris Nevus Diagnosis: Convolutional Neural Network And Deep Belief Network, Oyebade Oyedotun, Adnan Khashman
Iris Nevus Diagnosis: Convolutional Neural Network And Deep Belief Network, Oyebade Oyedotun, Adnan Khashman
Turkish Journal of Electrical Engineering and Computer Sciences
This work presents the diagnosis of iris nevus using a convolutional neural network (CNN) and deep belief network (DBN). Iris nevus is a pigmented growth (tumor) found in the front of the eye or around the pupil. It is seen that racial and environmental factors affect the iris color (e.g., blue, hazel, brown) of patients; hence, pigmented growths may be masked in the eye background or iris. In this work, some image processing techniques are applied to images to reinforce areas of interests in them, after which the considered classifiers are trained. We describe the automated diagnosis of iris nevus …
Assessing The Importance Of Features For Detection Of Hard Exudates In Retinal Images, Kemal Akyol, Baha Şen, Şafak Bayir, Hasan Basri̇ Çakmak
Assessing The Importance Of Features For Detection Of Hard Exudates In Retinal Images, Kemal Akyol, Baha Şen, Şafak Bayir, Hasan Basri̇ Çakmak
Turkish Journal of Electrical Engineering and Computer Sciences
Diabetes disrupts the operation of the eye and leads to vision loss, affecting particularly the nerve layer and capillary vessels in this layer by changes in the blood vessels of the retina.~Suddenly loss and blurred vision problems occur in the image, depending on the phase of the disease, called diabetic retinopathy. Hard exudates are one of the primary signs of diabetic retinopathy. Automatic recognition of hard exudates in retinal images can contribute to detection of the disease. We present an automatic screening system for the detection of hard exudates. This system consists of two main steps. Firstly, the features were …
Comparison Of Using The Genetic Algorithm And Cuckoo Search For Multicriteria Optimisation With Limitation, Ryszard Klempka, Boguslaw Filipowicz
Comparison Of Using The Genetic Algorithm And Cuckoo Search For Multicriteria Optimisation With Limitation, Ryszard Klempka, Boguslaw Filipowicz
Turkish Journal of Electrical Engineering and Computer Sciences
The article presents an example of using two optimisation methods, a genetic algorithm and cuckoo search, to identify parameters of electric drive controllers using some quality criteria and by applying a limitation to the maximum values of signals in the controlled facility. The results for both optimisation methods are compared. The impact of the probability that the nest host discovers the laid eggs on the speed of finding the optimum solution is investigated.
Truncation Thresholds: A Pair Of Spike Detection Thresholds Computed Using Truncated Probability Distributions, Murat Okatan, Mehmet Kocatürk
Truncation Thresholds: A Pair Of Spike Detection Thresholds Computed Using Truncated Probability Distributions, Murat Okatan, Mehmet Kocatürk
Turkish Journal of Electrical Engineering and Computer Sciences
We describe a method for computing a pair of spike detection thresholds, called `truncation thresholds', using truncated probability distributions, for extracellular recordings. In existing methods the threshold is usually set to a multiple of an estimate of the standard deviation of the noise in the recording, with the multiplication factor being chosen between 3 and 5 according to the researcher's preferences. Our method has the following advantages over these methods. First, because the standard deviation is usually estimated from the entire recording, which includes the spikes, it increases with firing rate. By contrast, truncation thresholds decrease in absolute value with …
Early Detection Of Sudden Cardiac Death Using Poincaré Plots And Recurrence Plot-Based Features From Hrv Signals, Vahid Houshyarifar, Mehdi Chehel Amirani
Early Detection Of Sudden Cardiac Death Using Poincaré Plots And Recurrence Plot-Based Features From Hrv Signals, Vahid Houshyarifar, Mehdi Chehel Amirani
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper we present a method to predict sudden cardiac death (SCD) based on the heart rate variability (HRV) signal and recurrence plots and Poincaré plot-extracted features. This work is a challenge since it is aimed to devise a method to predict SCD 5 min before its onset. The method consists of four steps: preprocessing, feature extraction, feature reduction, and classification. In the first step, the QRS complexes are detected from the electrocardiogram signal and then the HRV signal is extracted. In the second step, the recurrence plot of the HRV signal and Poincaré plot-extracted features are obtained. Four …
Asymptotic Stability Of Solutions For A Certain Non-Autonomous Second-Order Stochastic Delay Differential Equation, Ahmed Mohamed Abou-El-Ela, Abdel-Rahiem Sadek, Ayman Mohammed Mahmoud, Eman Sayed Farghaly
Asymptotic Stability Of Solutions For A Certain Non-Autonomous Second-Order Stochastic Delay Differential Equation, Ahmed Mohamed Abou-El-Ela, Abdel-Rahiem Sadek, Ayman Mohammed Mahmoud, Eman Sayed Farghaly
Turkish Journal of Mathematics
In this paper, sufficient criteria that guarantee the existence of stochastic asymptotic stability of the zero solution of the nonautonomous second-order stochastic delay differential equation \eqref{3e1} were established with the aid of a suitable Lyapunov functional. Two examples are given in the last section to illustrate our main result.
Dynamics Of A Predator-Prey System With A Mate-Finding Allee Effect On Prey, Ruiwen Wu, Xiuxaing Liu
Dynamics Of A Predator-Prey System With A Mate-Finding Allee Effect On Prey, Ruiwen Wu, Xiuxaing Liu
Turkish Journal of Mathematics
We consider a predator--prey system with nonmonotonic functional response and a hyperbolic type of mate-finding Allee effect on prey. A detailed mathematical analysis of the system, including the stability and a series of bifurcations (a saddle-node, a Hopf, and a Bogdanov--Takens bifurcation), has been given. The mathematical results show that the system is highly sensitive to the parameters and initial status. It exhibits a stable limit cycle, or different types of heteroclinic curves, or a homoclinic loop when parameters take suitable values.
Stability Of Nonmonotone Critical Traveling Waves Forspatially Discrete Reaction-Diffusion Equations With Time Delay, Ge Tian, Guobao Zhang, Zhao-Xing Yang
Stability Of Nonmonotone Critical Traveling Waves Forspatially Discrete Reaction-Diffusion Equations With Time Delay, Ge Tian, Guobao Zhang, Zhao-Xing Yang
Turkish Journal of Mathematics
This paper is concerned with the existence and stability of critical traveling waves (waves with minimal speed $c=c_*$) for a nonmonotone spatially discrete reaction-diffusion equation with time delay. We first show the existence of critical traveling waves by a limiting argument. Then, using the technical weighted energy method with some new variations, we prove that the critical traveling waves $\phi(x+c_{*}t)$ (monotone or nonmonotone) are time-asymptotically stable when the initial perturbations are small in a certain weighted Sobolev norm.
Stationary Distribution And Global Asymptotic Stability Of A Three-Species Stochastic Food-Chain System, Hong Qiu, Wenmin Deng
Stationary Distribution And Global Asymptotic Stability Of A Three-Species Stochastic Food-Chain System, Hong Qiu, Wenmin Deng
Turkish Journal of Mathematics
This paper intends to study some dynamical properties of a stochasticthree-dimensional Lotka--Volterra system. Under some mild assumptions, we first introduce a simple method to show thatthe model has a global and positive solution almost surely. Secondly,we prove that this model has a stationary distribution. Then we study the global asymptoticstability of the positive solution. Finally, some numerical simulations are introduced toillustrate the theoretical results.
Quasi-Metric Trees And $Q$-Hyperconvex Hulls, Zechariah Mushaandja, Olivier Olela Otafudu
Quasi-Metric Trees And $Q$-Hyperconvex Hulls, Zechariah Mushaandja, Olivier Olela Otafudu
Turkish Journal of Mathematics
The investigation of metric trees began with J. Tits in 1977. Recently we studied a more general notion of quasi-metric tree. In the current article we prove, among other facts, that the $q$-hyperconvex hull of a $q$-hyperconvex $T_0$-quasi-metric tree is itself a $T_0$-quasi-metric tree. This is achieved without using the four-point property, a geometric concept used by Aksoy and Maurizi to show that every complete metric tree is hyperconvex.
Dirac Systems With Regular And Singular Transmission Effects, Eki̇n Uğurlu
Dirac Systems With Regular And Singular Transmission Effects, Eki̇n Uğurlu
Turkish Journal of Mathematics
In this paper, we investigate the spectral properties of singular eigenparameter dependent dissipative problems in Weyl's limit-circle case with finite transmission conditions. In particular, these transmission conditions are assumed to be regular and singular. To analyze these problems we construct suitable Hilbert spaces with special inner products and linear operators associated with these problems. Using the equivalence of the Lax-Phillips scattering function and Sz-Nagy-Foiaş characteristic functions we prove that all root vectors of these dissipative operators are complete in Hilbert spaces.
Piecewise Asymptotically Almost Periodic Solution Of Neutral Volterra Integro-Differential Equations With Impulsive Effects, Zhinan Xia
Turkish Journal of Mathematics
In this paper, we investigate the existence and uniqueness ofa piecewise asymptotically almost periodic mild solution tononautonomous neutral Volterra integro-differential equations withimpulsive effects in Banach space. The working tools are based onthe Krasnoselskii's fixed point theorem and semigroup theory. Inorder to illustrate our main results, we study the piecewiseasymptotically almost periodic solution of the impulsive partialdifferential equations with Dirichlet conditions.
On Generalized Kropina Change Of $M$Th Root Finsler Metrics With Special Curvature Properties, Bankteshwar Tiwari, Ghanashyam Kr. Prajapati
On Generalized Kropina Change Of $M$Th Root Finsler Metrics With Special Curvature Properties, Bankteshwar Tiwari, Ghanashyam Kr. Prajapati
Turkish Journal of Mathematics
In the present paper, we consider generalized Kropina change of $m$th root Finsler metrics and prove that every generalized Kropina change of $m$th root Finsler metrics with isotropic Berwald curvature, isotropic mean Berwald curvature, relatively isotropic Landsberg curvature, and relatively isotropic mean Landsberg curvature reduces to the Berwald metric, weakly Berwald metric, Landsberg metric, and weakly Landsberg metric, respectively. We also show that every generalized Kropina change of $m$th root Finsler metrics with almost vanishing $\textbf{H}$-curvature has vanishing $\textbf{H}$-curvature.
Exploiting Kernel-Based Feature Weighting And Instance Clustering To Transfer Knowledge Across Domains, Jafar Tahmoresnezhad, Sattar Hashemi
Exploiting Kernel-Based Feature Weighting And Instance Clustering To Transfer Knowledge Across Domains, Jafar Tahmoresnezhad, Sattar Hashemi
Turkish Journal of Electrical Engineering and Computer Sciences
Learning invariant features across domains is of vital importance to unsupervised domain adaptation, where classifiers trained on the training examples (source domain) need to adapt to a different set of test examples (target domain) in which no labeled examples are available. In this paper, we propose a novel approach to find the invariant features in the original space and transfer the knowledge across domains. We extract invariant features of input data by a kernel-based feature weighting approach, which exploits distribution difference and instance clustering to find desired features. The proposed method is called the kernel-based feature weighting (KFW) approach and …
Probabilistic Data Fusion Model For Heart Beat Detection From Multimodal Physiological Data, Tehseen Zia, Zulqarnian Arif
Probabilistic Data Fusion Model For Heart Beat Detection From Multimodal Physiological Data, Tehseen Zia, Zulqarnian Arif
Turkish Journal of Electrical Engineering and Computer Sciences
Automatic detection of heart beats constitutes the basis for electrocardiogram (ECG) analysis and mainly relies on detecting QRS complexes. Detection is typically performed by analyzing the ECG signal. However, when signal quality is low, it often leads to the triggering of false alarms. A contemporary approach to reduce false alarm rate is to use multimodal data such as arterial blood pressure (ABP) or photoplethysmogram (PPG) signals. To leverage the correlated temporal nature of these signals, a probabilistic data fusion model for heart beat detection is proposed. A hidden Markov model is used to decode waveforms into segments. A Bayesian network …
A Hybrid Tracking System For Image-Guided Spine Surgery Using A Tracked Mobile C-Arm: A Phantom Study, Peyman Ghobadi Azbari, Alireza Ahmadian, Hooshang Saberi, Mohammadreza Ay, Mostafa Abdolghaffar, Keyvan Amini Khoiy
A Hybrid Tracking System For Image-Guided Spine Surgery Using A Tracked Mobile C-Arm: A Phantom Study, Peyman Ghobadi Azbari, Alireza Ahmadian, Hooshang Saberi, Mohammadreza Ay, Mostafa Abdolghaffar, Keyvan Amini Khoiy
Turkish Journal of Electrical Engineering and Computer Sciences
In recent years, an increasing number of various surgeries are observed utilizing fluoroscopy. The radiation exposure received by patients and medical staff and the surgical guidance in multiple planes frequently necessitate the positioning of a mobile C-arm. Operative navigation enables a mobile C-arm to provide multiplanar surgical guidance and decreases the radiation dose to the patient and operating room personnel. In this study, we propose a video-based tracked mobile C-arm (referred to as a "tracked C-arm system") to position the system. This system defines a reference framework to maintain the video-optical tracker data and computed tomography (CT) or cone-beam CT …
Analysis Of Reconstruction Performance Of Magnetic Resonance Conductivity Tensor Imaging (Mrcti) Using Simulated Measurements, Evren Deği̇rmenci̇, Behçet Murat Eyüboğlu
Analysis Of Reconstruction Performance Of Magnetic Resonance Conductivity Tensor Imaging (Mrcti) Using Simulated Measurements, Evren Deği̇rmenci̇, Behçet Murat Eyüboğlu
Turkish Journal of Electrical Engineering and Computer Sciences
Magnetic resonance conductivity tensor imaging (MRCTI) was proposed recently to produce electrical conductivity images of anisotropic tissues. Similar to magnetic resonance electrical impedance tomography (MREIT), MRCTI uses magnetic field and boundary potential measurements obtained utilizing magnetic resonance imaging techniques. MRCTI reconstructs tensor images of anisotropic conductivity whereas MREIT reconstructs isotropic conductivity images. In this study, spatial resolution and linearity of five recently proposed MRCTI algorithms are evaluated using simulated measurements gathered from three different computer models. The results show that all five algorithms have quite similar reconstruction performances. Since the AB$_{z}$S algorithm is easier to apply compared to the other …