39 results on '"Ibrahim Celik"'
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2. Mapping QTLs for Super-Earliness and Agro-Morphological Traits in RILs Population Derived from Interspecific Crosses between Pisum sativum × P. fulvum
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Hatice Sari, Tuba Eker, Hilal Sule Tosun, Nedim Mutlu, Ibrahim Celik, and Cengiz Toker
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Pisum sativum ,Pisum fulvum ,earliness ,agronomic traits ,morphological traits ,SSRs ,Biology (General) ,QH301-705.5 - Abstract
Earliness in crop plants has a vital role in prevention of heat-induced drought stress and in combating global warming, which is predicted to exacerbate in the near future. Furthermore, earliness may expand production into northern areas or higher altitudes, having relatively shorter growing season and may also expand arable lands to meet global food demands. The primary objective of the present study was to investigate quantitative trait loci (QTLs) for super-earliness and important agro-morphological traits in a recombinant inbred line (RIL) population derived from an interspecific cross. A population of 114 RILs developed through single-seed descent from an interspecific cross involving Pisum sativum L. and P. fulvum Sibth. et Sm. was evaluated to identify QTLs for super-earliness and important agro-morphological traits. A genetic map was constructed with 44 SSRs markers representing seven chromosomes with a total length of 262.6 cM. Of the 14 QTLs identified, two were for super-earliness on LG2, one for plant height on LG3, six for number of pods per plant on LG2, LG4, LG5 and LG6, one for number of seeds per pod on LG6, one for pod length on LG4 and three for harvest index on LG3, LG5, and LG6. AA205 and AA372-1 flanking markers for super-earliness QTLs were suggested for marker-assisted selection (MAS) in pea breeding programs due to high heritability of the trait. This is the first study to map QTLs originating from P. sativum and P. fulvum recently identified species with super-earliness character and the markers (AA205 and AA372-1) linked to QTLs were valuable molecular tools for pea breeding.
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- 2023
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3. De novo assembly and characterization of the first draft genome of quince (Cydonia oblonga Mill.)
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Aysenur Soyturk, Fatima Sen, Ali Tevfik Uncu, Ibrahim Celik, and Ayse Ozgur Uncu
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Medicine ,Science - Abstract
Abstract Quince (Cydonia oblonga Mill.) is the sole member of the genus Cydonia in the Rosacea family and closely related to the major pome fruits, apple (Malus domestica Borkh.) and pear (Pyrus communis L.). In the present work, whole genome shotgun paired-end sequencing was employed in order to assemble the first draft genome of quince. A genome assembly that spans 488.4 Mb of sequence corresponding to 71.2% of the estimated genome size (686 Mb) was produced in the study. Gene predictions via ab initio and homology-based sequence annotation strategies resulted in the identification of 25,428 and 30,684 unique putative protein coding genes, respectively. 97.4 and 95.6% of putative homologs of Arabidopsis and rice transcription factors were identified in the ab initio predicted genic sequences. Different machine learning algorithms were tested for classifying pre-miRNA (precursor microRNA) coding sequences, identifying Support Vector Machine (SVM) as the best performing classifier. SVM classification predicted 600 putative pre-miRNA coding loci. Repetitive DNA content of the assembly was also characterized. The first draft assembly of the quince genome produced in this work would constitute a foundation for functional genomic research in quince toward dissecting the genetic basis of important traits and performing genomics-assisted breeding.
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- 2021
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4. Development of biotic stress resistant F1 interspecific hybrid rootstock derived from Solanum lycopersicum and Solanum habrochaites
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Aylin Kabaş and Ibrahim Celik
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marker assisted selection ,interspecific F1 hybrid ,fruit quality traits ,resistant ,Biochemistry ,QD415-436 ,Plant culture ,SB1-1110 ,Science - Abstract
Tomato is major horticultural plant consumed worldwide. Biotic stress (nematodes, fungus and bacteria) has negative effect on tomato production due to causing reduced yield or plant death. Rootstocks confer resistance to soil-borne pathogen are considered the most effective and environment friendly approach for such a stress management. Thus, development of genetic resources having multiple resistance genes is essential for sustainable tomato breeding. Solanum habrochaites is one of the most studied wild tomato species due to its high genetic potential for biotic and abiotic stresses. In the present study, rootstock potential of an interspecific F1 hybrid derived from S. habrochaites was evaluated as using resistance genes (Frl, I-2, I-3, Mi-3, Pto Ty-1, Ty-3 and Sw-5) specific molecular markers for 6 major tomato diseases and 31 fruit quality traits. The study reported that F1 hybrid had resistance alleles for 5 genes (Frl, I-2, I-3, Pto and Sw-5) confer resistance to fusarium crown rot disease, crown – root rot disease, race 2 and 3 of Fusarium oxysporum f. sp. radicis lycopersici, bacterial speck and tomato spotted wilt virus (TSWV), respectively. Despite high performance of F1 hybrid for biotic stress, the study pointed S. habrochaites specific graft incompatibility due to poor rate of grafting efficiency, small fruit formation and low yield. This is the first comprehensive study evaluated the horticultural performance of an interspecific hybrid in tomato.
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- 2021
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5. An optimization model for wind turbine micro-siting in Wind Power Plant installation
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Ibrahim CELIK, Ceyhun YILDIZ, and Mustafa SEKKELI
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Micro-siting ,Wind Power Plant ,Genetic algorithm ,WAsP ,Weibull distribution ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Science ,Science (General) ,Q1-390 - Abstract
The wind turbine micro-siting is one of the most important agenda topics in Wind Power Plant (WPP) installations. An appropriate siting of wind turbines increases the amount of energy produced by the WPP. In this study, an optimization model is developed for WPP installation consisting of 10 wind turbines. In the first stage of the study, the wind speed distribution in WPP installation region is modeled. In this model; wind measurements taken from the WPP installation region, topographic map of the WPP installation region and WASP (Wind Atlas Analysis and Application Program) software are used. In the second stage, a general method has been formed for calculating the total energy produced by the wind turbines to be placed randomly in the region. A real power curve belong to the wind turbine is used for the energy calculation to be close to real production. This power curve belongs to the Bonus brand wind turbine, which has an output power of 2 MW. In the third stage of the study, the optimization model is solved by using the Genetic Algorithm (GA) method and 10 number optimal turbine coordinates is determined. In order to evaluate the results, wind turbines are placed in these coordinates using WASP software. According to the results from the software, the annual energy production of the wind turbines is found as 56553.5 kWh. Furthermore, it has been observed that wind turbine placements are made to the regions, which have high energy production potential in the mean wind speed map. This result showed that the proposed model is placed turbines effectively in WPP installation.
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- 2018
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6. Use of Shear Wave Elastography in Pediatric Musculoskeletal Disorders
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Halil Ibrahim, Celik, primary and Aynur Ayşe, Karaduman, additional
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- 2022
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7. Head posture mediates the association of cognition with hand grip and pinch strength in older adults: an examination using structural equation modeling
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Halil Ibrahim Celik, Banu Unver, Eda Akbas, and Emin Ulas Erdem
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Rheumatology ,Orthopedics and Sports Medicine - Abstract
Background The association of cognition with hand grip and pinch strength has been well-recognized in older adults. The authors sought to explore: (1) associations among forward head posture (FHP), cognition, and hand grip and pinch strength in older adults; and (2) the mediator role of FHP in these pathways using structural equation modeling (SEM). Methods This cross-sectional study included 88 older adults (70.5% male; mean age = 68.75±3.87 years). Cognition was assessed by the Mini-Mental State Examination (MMSE), head posture by the Craniovertebral Angle (CVA) obtained from photographic analysis, hand grip strength by a handheld dynamometer, and pinch strength by a pinch meter. Using the two SEMs, a potential mediator role of the CVA was investigated. While the MMSE was addressed as an independent variable in both models, hand grip and pinch strength were addressed as dependent variables in model 1 and model 2, respectively. Results The correlations between the CVA and MMSE (r = 0.310), hand grip strength (r = 0.370), and pinch strength (r = 0.274 to 0.292) were statistically significant (p Conclusions The CVA was associated with the MMSE, hand grip strength, and pinch strength, and CVA partially mediates the association of the MMSE with grip and pinch strength in older adults, indicating that cognition had an effect on grip and pinch strength through an indirect path via head posture. This finding reveals that evaluating head posture and providing corrective therapeutic interventions as needed may be beneficial in reducing the negative impact of decreased cognition on motor functions in older adults.
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- 2023
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8. The Effect of Kinesio Taping Over the Gluteal Muscles on Activity and Participation in Children with Unilateral Cerebral Palsy: A Preliminary Randomized Controlled Study
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Seda Nur Kemer, Halil Ibrahim Celik, Seyda Ozal, and Nihan Kafa
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Pediatrics, Perinatology and Child Health - Abstract
Background: Insufficiencies of gluteus medius and maximus muscles in children with unilateral cerebral palsy (CP) may restrict activity and participation by affecting gait, gross motor functions, and balance. Objectives: The present study aimed to elucidate the effect of Kinesio taping (KT) applied to the gluteus medius and maximus muscles on activity and participation in children with CP. Methods: The study was completed with 20 children with unilateral CP who were randomly divided into 2 groups: The KT group received KT and physiotherapy (n = 11), and the control group received only physiotherapy (n = 9). The KT application was administered for 4 weeks. The activity was evaluated with a BTS G-Walk Spatiotemporal Gait Analysis System, Timed Up and Go test (TUG), Functional Mobility Scale (FMS), Gross Motor Function Measure (GMFM), and Pediatric Balance Scale (PBS); in addition, participation was evaluated using the Canadian Occupational Performance Measure (COPM). Results: The KT group showed significant improvements in the gait parameter (cadence; P = 0.009), pelvic tilt symmetry (P = 0.017), pelvic rotation symmetry (P = 0.018), gait symmetry (P < 0.001), FMS (P = 0.07), TUG, GMFM, PBS, and COPM scores (P < 0.001) in the medium-term compared to the control group. It was also found that gait (cadence; P = 0.004) and functional mobility (P < 0.001) improved in the immediate term than in the KT group. Conclusions: KT combined with conventional physiotherapy can improve cadence and functional mobility in the immediate term, as well as gait and pelvic symmetry, functional mobility, gross motor function, balance, and participation in the medium term in children with unilateral CP. Further randomized controlled studies addressing large samples and long-term effects are warranted.
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- 2023
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9. Parameter Identification of PMSMs Considering VSI Nonlinearity with Coupled Adaline NNs
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Elia Brescia, Patrizia Vergallo, and Ibrahim Celik
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- 2023
10. Identification of VSI Nonlinearity in IoT-Embedded PMSM Drives Using FFT
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Elia Brescia, Patrizia Vergallo, and Ibrahim Celik
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- 2023
11. Indonesia and Bugis in The Era of Erdogan
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Halil Ibrahim Celik and Ismail Suardi Wekke
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- 2022
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12. Design and Simulation of Beat Up Mechanism: Handmade Carpet Looms
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Halil Ibrahim Celik, Lale Canan Dulger, and Mehmet Topalbekiroglu
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- 2022
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13. SSR mining of black cumin (Nigella sativa L) transcriptome for molecular markers development
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Ibrahim Celik and Adnan AYDIN
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Black cumin (Nigella sativa L.) is an important aromatic plant due to the production of many health-beneficial metabolites. Up to date- molecular characterizations of the germplasm were performed by using general marker systems. In the present study, the transcriptome of the black cumin was searched for SSRs. Dinucleotide and trinucleotide repeats were the major repeat types which comprised 52.4% and 44.7% of total SSRs, respectively. TC/GA was the most frequent repeat motif (11.8%). A total of 4,779 SSR markers were developed. Functional annotation of 2,456 SSR markers was performed. For validation of the SSR markers, randomly selected 20 markers were tested in a subset population containing nine Nigella sativa and one Nigella damascena genotypes. A total of 13 SSR makers produced clear amplification and generated 41 polymorphic fragments with mean gene diversity (0.25). Principal Coordinate Analyses (PCoA) and MCMC methods based on hierarchical clustering analysis revealed two clusters and moderate diversity with a mean value of 0.66 and 0.57 for interspecific and intraspecific populations, respectively. This is the first report of the development of SSR markers from black cumin transcriptome. These high-throughput crop-specific SSR markers are valuable genomic sources for comprehensive genome analysis in black cumin.
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- 2022
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14. Machine learning algorithms revealed distorted retinal vascular branching in individuals with bipolar disorder
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Murat Ilhan Atagun, Guray Sonugur, Aygun Yusifova, Ibrahim Celik, and Nagihan Ugurlu
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Machine Learning ,Vascular Endothelial Growth Factor A ,Psychiatry and Mental health ,Clinical Psychology ,Bipolar Disorder ,Humans ,Retinal Vessels ,Algorithms - Abstract
Converging evidence designate vascular vulnerability in bipolar disorder. The predisposition progresses into distortion in time, thus detection of the vascular susceptibility may help reducing morbidity and mortality. It was aimed to assess retinal fundus vasculature in cardiovascular risk-free patients with bipolar disorder.Total of 68 individuals (38 patients with bipolar disorder, 30 healthy controls) were enrolled. In order to avoid from degenerative processes, participants were between 18 and 45 years of age, vascular risk factors were eliminated. Microscopic retinal fundus images were processed with machine learning algorithms (multilayer perceptron and support vector machine) and artificial neural network approaches.In comparison to the healthy control group, the bipolar disorder group had lower number of breaking points (P 0.001), lower number of curved vessel segments (P 0.001). Total length of smooth vessels was longer (P = 0.040), and total length of curved vessel segments was significantly shorter (P 0.001) than the control group. Vascular endothelial growth factor levels and gender were the confounders. There were significant correlations between vascular measures and serum lipid levels.Sample size was small and patients were on various medications.These results indicate distortion in retinal vascular branching in bipolar disorder. Disrupted branching may reflect disturbed prosperity of retinal vascular plexus in patients with bipolar disorder. Alterations in the retinal vessels might be indicators of disruption in cerebral vascular system efficiency and thus neurovascular unit dysfunction in bipolar disorder.
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- 2022
15. A Hierarchical Key Assignment Scheme: A Unified Approach for Scalability and Efficiency
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Ibrahim Celikbilek, Baris Celiktas, and Enver Ozdemir
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Hierarchical key assignment ,access control ,closest vector problem ,inner product space ,access graph ,strong key indistinguishability ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This study introduces a hierarchical key assignment scheme (HKAS) based on the closest vector problem in an inner product space (CVP-IPS). The proposed scheme offers a comprehensive solution with scalability, flexibility, cost-effectiveness, and high performance. The key features of the scheme include CVP-IPS based construction, the utilization of two public keys by the scheme, a distinct basis set designated for each class, a direct access scheme to enhance user convenience, and a rigorous mathematical and algorithmic presentation of all processes. This scheme eliminates the need for top-down structures and offers a significant benefit in that the lengths of the basis sets defined for classes are the same and the costs associated with key derivation are the same for all classes, unlike top-down approaches, where the higher class in the hierarchy generally incurs much higher costs. The scheme excels in both vertical and horizontal scalability due to its utilization of the access graph and is formally proven to achieve strong key indistinguishability security (S-KI-security). This research represents a significant advancement in HKAS systems, providing tangible benefits and improved security for a wide range of use cases.
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- 2024
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16. Parieto-occipital alopecia in early infancy mandates cranial imaging
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Ecenur Tuc, Ibrahim Celik, Yasemin Alanay, and Ercan Karaarslan
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0301 basic medicine ,Pediatrics ,medicine.medical_specialty ,030105 genetics & heredity ,Pathology and Forensic Medicine ,Craniofacial Abnormalities ,03 medical and health sciences ,0302 clinical medicine ,Parieto-occipital alopecia ,Cerebellum ,Humans ,Medicine ,Abnormalities, Multiple ,Growth Disorders ,Genetics (clinical) ,business.industry ,Neurocutaneous Syndromes ,Skull ,Infant, Newborn ,Infant ,Alopecia ,General Medicine ,Early infancy ,Rhombencephalon ,Pediatrics, Perinatology and Child Health ,030221 ophthalmology & optometry ,Female ,Anatomy ,business - Published
- 2018
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17. Load cell-based PID method controlled Segway system modelling and simulation
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Muhammed Mustafa Kelek, Ugur Fidan, Yuksel Oguz, Ibrahim Celik, and Tolga Ozer
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Modeling and Simulation ,General Engineering - Published
- 2021
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18. Generalization of Chebyshev wavelet collocation method to the rth-order differential equations
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Ibrahim Celik
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Physics::Computational Physics ,nonlinear differential equations ,lcsh:T57-57.97 ,lcsh:Mathematics ,MathematicsofComputing_NUMERICALANALYSIS ,Chebyshev wavelets ,approximate solution ,lcsh:QA1-939 ,Chebyshev wavelets,collocation method,nonlinear differential equations,quasilinearization technique ,Mathematics::Numerical Analysis ,collocation method ,quasilinearization technique ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,lcsh:Applied mathematics. Quantitative methods - Abstract
Chebyshev wavelets operational matrices play an important role for the numeric solution of \textit{r}th order differential equations. In this study, operational matrices of \textit{rth} integration of Chebyshev wavelets are presented and a general procedure of these matrices is correspondingly given. Disadvantages of Chebyshev wavelets methods is eliminated for \textit{r}th integration of $\Psi (t)$. The proposed method is based on the approximation by the truncated Chebyshev wavelet series. Algebraic equation system has been obtained by using the Chebyshev collocation points and solved. The proposed method has been applied to the three nonlinear boundary value problems using quasilinearization technique. Numerical examples showed the applicability and accuracy.
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- 2018
19. Dini, tarihi ve edebi açıdan Kudüs
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Karakaş, Ali, Halil Kaya, Mustafa Altunkaya, Mehmet Ünal, Ahmet Yıldırım, Mustafa Bıyık, Yasemin Sarı, Şerife Eroğlu Memiş, Yasin Yılmaz, Sevde Nur Güldiken, Abdulkadir Dündar, Şeyda Nur Ersöz, Muhammed İhsan Hacıismailoğlu, Çulpan Zaripova Çetin, Zeki Taştan, Nuran Öztürk, İbrahim Özen, Filiz Kılıç, Fatıma Betül Üyümez, Oğuzhan Aydın, Mehmet Nuhoğlu, Hatice Bildirici, Feyza Şule Güngör, Nüket Elpeze Ergeç, Meltem Keskin Köylü, baş editörler, İbrahim Çelik, Mehmet Dursun Erdem, Özcan Güngör, Necip Fazıl Kurt, editörler, Halil İbrahim Doğan, Rukiye Aysun İnan, Tuğba Özen, Karakaş, Ali, Halil Kaya, Mustafa Altunkaya, Mehmet Ünal, Ahmet Yıldırım, Mustafa Bıyık, Yasemin Sarı, Şerife Eroğlu Memiş, Yasin Yılmaz, Sevde Nur Güldiken, Abdulkadir Dündar, Şeyda Nur Ersöz, Muhammed İhsan Hacıismailoğlu, Çulpan Zaripova Çetin, Zeki Taştan, Nuran Öztürk, İbrahim Özen, Filiz Kılıç, Fatıma Betül Üyümez, Oğuzhan Aydın, Mehmet Nuhoğlu, Hatice Bildirici, Feyza Şule Güngör, Nüket Elpeze Ergeç, Meltem Keskin Köylü, baş editörler, İbrahim Çelik, Mehmet Dursun Erdem, Özcan Güngör, Necip Fazıl Kurt, editörler, Halil İbrahim Doğan, Rukiye Aysun İnan, and Tuğba Özen
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- Israil-Arap Savasi, 1948-1949--Kudüs, Jerusalem--History--Siege, 1948, Israel-Arab War, 1948-1949--Jerusalem, Kudüs - Tarih--Kusatma, 1948, Jerusalem--History, Kudüs--Tarih
- Published
- 2018
20. Synthesis of N‐Doped Graphene Photo‐Catalyst for Photo‐Assisted Charging of Li‐Ion Oxygen Battery
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Nilay Kaçar, Ersu Lökçü, Meltem Çayirli, Reşat Can Özden, Sahin Coskun, Cigdem Toparli, İbrahim Çelikyürek, and Mustafa Anik
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chemical vapor deposition ,Li‐Ion oxygen batteries ,N‐doped graphene ,photo‐catalyst ,photo‐charging ,Technology ,Environmental sciences ,GE1-350 - Abstract
Abstract In this work, nitrogen (N)‐doped graphene film is synthesized, as a photo‐catalyst, on one side of the copper foam by chemical vapor deposition and the copper foam is directly used as an electrode after porous Pd@rGO cathode loading to the other side of the foam for the photo‐assisted charging of the Li‐ion oxygen battery. The amount of urea (CO(NH2)2), which is used as N atom source, is optimized to get maximum photo‐anodic currents from the n‐type graphene films. The optical band gap and the valance band edge potential of the optimized N‐doped graphene film are determined as 2.00 eV and 3.71 VLi+/Li, respectively. X‐ray photoelectron spectra provided that the atomic percent of N atoms in the graphene film is 1.34% and the graphitic, pyrrolic and pyridinic N atom percentages are 54.01%, 42.20% and 3.79%, respectively. The photo‐assisted charging tests indicated that the N‐doped graphene film photo‐catalyst reduced the charging potential significantly even at 1000 mA g−1 (0.1 mA cm−2) current density and improved the cyclic discharge‐charge performance of the Li‐ion oxygen battery considerably.
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- 2024
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21. Use of Shear Wave Elastography in Pediatric Musculoskeletal Disorders
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Ibrahim, Celik Halil Ibrahim and Aynur Ayşe, Karaduman
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Medical - Abstract
Muscle shear-wave elastography (SWE) is an exciting and rapidly evolving ultrasound technique that allows quantification of muscle stiffness with a non-invasive, non-painful and non-irradiating examination. It has the potential of wider clinical use due to relatively low-cost, providing real-time measurement and, especially for the pediatric population, taking less time and sedation/anesthesia-free. Research indicate that muscle SWE shows promise as an adjunct clinical tool for differentiating between a normal and an abnormal muscle, monitoring the effectiveness of therapeutic interventions, altering the therapeutic intervention, or deciding treatment duration. This chapter will aim to provide an overview of the knowledge about the using of muscle SWE in common pediatric musculoskeletal disorders such as Duchenne Muscular Dystrophy, Cerebral Palsy, Adolescent Idiopathic Scoliosis, and Congenital Muscular Torticollis in the light of current evidence.
- Published
- 2018
22. Quarter Car Active Suspension System Control Using Fuzzy Controller
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Turan Alp Arslan, Faruk Emre Aysal, İbrahim Çelik, Hüseyin Bayrakçeken, and Tuğçe Nur Öztürk
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active suspension ,fuzzy logic ,quarter car model ,vehicle dynamics ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The performance of active suspension systems is directly related to the mechanical design and control of the system. The stable operation of the controller improves driving comfort and handling. The quarter car model is frequently used in the analysis of sus-pension systems due to its simple structure. In this study, Matlab Simulink software was used in the modeling, control and simulation of the quarter car active suspension model. System performance was investigated for four different road profiles with PID and fuzzy logic control methods. Two of the road profiles used are in the form of impact signals consisting of pits and bumps. The other two road profiles are random road disturbances with high frequency. The effects of active and passive suspension systems on driving comfort are compared by taking into account the control methods used. As a result of the study, it has been determined that the fuzzy logic controller gives better results in pulse signals consisting of bumps and pits, and the PID controller gives better results in high-frequency random road disturbances. In addition, with the use of fuzzy logic control method in the active suspension system, a significant decrease in the actuator force has occurred. This result is very interesting in terms of minimizing energy, reducing actuator sizes and reducing costs.
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- 2022
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23. S. pimpinellifolium_GBS_data_Celik et al. (2016)
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ibrahim celik and ibrahim celik
- Abstract
A SAM (Sequence Alignment/Map) file contained all the merged tags of the GBS and sample key
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- 2016
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24. Sunflower_GBS_data_Celik et al. (2016).zip
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ibrahim celik and ibrahim celik
- Abstract
Sunflower GBS data file performed by Celik et al. (2016) Genome-wide SNP discovery and genetic linkage map construction in sunflower (Helianthus annuus L.) using a genotyping by sequencing (GBS) approach
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- 2016
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25. Fundamental solutions of the complex Monge-Ampère equation
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Evgeny A. Poletsky and Halil Ibrahim Celik
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General Mathematics ,Mathematical analysis ,Fundamental solution ,Gravitational singularity ,Monge–Ampère equation ,Monge equation ,Monge cone ,Mathematics - Published
- 1997
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26. A Higher-Level Security Scheme for Key Access on Cloud Computing
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Baris Celiktas, Ibrahim Celikbilek, and Enver Ozdemir
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Cloud security ,hierarchical ,interpolation ,key access ,key assignment ,secret sharing ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
In this work, we construct a key access management scheme that seamlessly transitions any hierarchical-like access policy to the digital medium. The proposed scheme allows any public cloud system to be used as a private cloud. We consider the data owner an entity consisting of several organization units. We provide a secure method for each user of this entity to access the public cloud from both inside and outside the company’s network. The idea of our key access control scheme, which is based on Shamir’s secret sharing algorithm and polynomial interpolation method, is suitable especially for hierarchical organizational structures. It offers a secure, flexible, and hierarchical key access mechanism for organizations utilizing mission-critical data. It also minimizes concerns about moving mission-critical data to the public cloud and ensures that only users with sufficient approvals from the same or higher privileged users can access the key by making use of the topological ordering of a directed graph, including self-loop. Main overheads such as public and private storage needs are reduced to a tolerable level, and the key derivation is computationally efficient. From a security perspective, our scheme is both resistant to collaboration attacks and provides key indistinguishability security. Since the key does not need to be held anywhere, the problem of a data breach based on key disclosure risk is also eliminated.
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- 2021
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27. FE3AL VE Tİ6AL4V ALAŞIMLARININ DİFÜZYON KAYNAĞI
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Osman TORUN and İbrahim ÇELİKYÜREK
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diffusion welding ,ti6al4v ,fe3al ,sem ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
In this study, bonding of Fe3Al and Ti6Al4V alloys proved with diffusion bonding method in vacuum atmosphere. Diffusion bonding of Fe3Al and Ti6Al4V alloys with copper interlayer was carried out at 900ºC for different times under 3 MPa. Shear test was applied to bonded samples to measure the shear strength of the welds. SEM-EDS studies indicated diffusion of copper atoms to Fe3Al and Ti6Al4V matrix. Investigations of the fracture surfaces of all samples showed the sign of good bonding with some plastic deformation. The highest shear strength of 209 MPa was obtained from samples bonded for 120 minutes.
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- 2020
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28. KADININ CİNSEL BİR SİMGE OLARAK REKLAMDA KULLANILMASI: COSMOPOLİTAN DERGİSİ ÖRNEĞİ/ USING WOMAN IN ADVERTISEMENT AS A SYMBOL OF SEX: COSMOPOLITAN MAGAZINE EXAMPLE
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Ismail Aysad Gudekli and Ibrahim Celik
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History ,Turkish ,business.industry ,media_common.quotation_subject ,Social change ,Context (language use) ,Advertising ,Gender studies ,Representation (arts) ,language.human_language ,Woman,Gender,Advertisement,Woman in Advertisements,Semiotics,Gender Mainstreaming,Feminism ,Symbol ,Kadın,Cinsiyet,Reklam,Reklamlarda Kadın,Göstergebilim,Toplumsal Cinsiyet,Feminizm ,language ,Semiotics ,business ,Period (music) ,media_common ,Mass media - Abstract
It is widely known and agreed that advertisements are come up every time and everywhere in our daily life and consist of some meanings. Therefore, advertisements are open to be read as a text wherever they are published in mass media. In this context, social change will be examined in terms of sex and its reflections thereof by semiotic analysis method by comparing the figure of women representation in advertisements in "Turkish Cosmopolitan" of 1990's, 2000's and 2010's and use of women image in advertisement at that period. In this context, social change of woman on advertisements was historically studied through examples., Reklamların günlük yaşam içinde her an, her yerde karşımıza çıktığı ve belirli anlamlar içerdiği herkes tarafından bilinmekte, kabul edilmektedir. Dolayısıyla hangi kitle iletişim aracında yayınlanırsa yayınlansın reklamlar birer metin olarak okunmaya açıktır. Bu bağlamda, bu çalışmada; 1990, 2000 ve 2010’lu dönemler ait “Türk Cosmopolitan” kadın dergisinde yer alan reklamlarda kadın temsilinin yer alış şekli ile aynı dönemde reklamlarda kadın imgesi kullanımının karşılaştırılması yapılarak toplumsal değişimin cinsellik ve bunun reklamdaki yansımaları göstergebilimsel analiz yöntemi kullanılarak irdelenecektir. Bu bağlamda tarihsel olarak kadının reklamlardaki toplumsal değişimi örneklemler üzerinden incelenmiştir.
- Published
- 2014
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29. Molecular diversity and assessment of reactions of pepper pure line germplasm to Botrytis cinerea
- Author
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Ilknur Polat, Ömür Baysal, Emine Gümrükcü, Görkem Sülü, Aytül Kitapci, Ramazan Özalp, Ibrahim Çelik, Zübeyir Devran, and Ersin Polat
- Subjects
disease severity ,genetic diversity ,grey mould ,issr ,reaction ,Plant culture ,SB1-1110 - Abstract
The host resistance level of pure line materials was assessed in the genepool for the purpose of breeding. The highest resistance to the pathogen was observed in bell-type pepper. Moreover, genetic diversity of pure lines was investigated using selected inter-simple sequence repeat (ISSR) primers. Generally, genetic markers showed genetic diversity, so that long-type pure lines were separated from the other accessions. This is the first report on host reactions of Turkish pure lines as breeding material. These results provide significant information for future pepper breeding programs.
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- 2018
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30. Improvement of long type pepper lines resistant to Tomato Spotted Wilt Virus (TSWV)
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İbrahim ÇELİK, Ramazan ÖZALP, Necla ÇELİK, İlknur POLAT, and Görkem SÜLÜ
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Pepper ,TSWV ,Mechanical inoculation ,Molecular marker ,CAPS ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Pepper is widely grown vegetable crops after tomato and watermelon in the world. One of the most important diseases on pepper production is caused by Tomato spotted wilt virus (TSWV). The best way for the control of this disease is to use resistant varieties. This study aimed to improve TSWV resistant lines to use as a parent in long type pepper breeding studies. Three genotypes resistant to TSWV were crossed with the susceptible Serademre 8 used to be commercial. Pedigree method was applied as the breeding method. Three populations were self-pollinated for five generations. The progenies for each of populations were tested against TSWV. Mechanical inoculations were performed in each generation and the selected resistant plants were grown for self-pollination to achieve next generation. Molecular tests were applied to the plants in stages F1 and F5. Virulent strain isolated from infected pepper plants was used as a disease material in the mechanical inoculations. CAPS marker (SCAC568) linked to the TSWV resistance gene (Tsw) was used in the molecular test for verification of mechanical test. In this study, 10 lines resistant to TSWV with good features were developed. Some of the obtained TSWV resistant lines have been transferred to private sector seed companies for use in pepper breeding programs.
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- 2018
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31. Effects of rootstocks on fruit yield and some quality traits of watermelon (Citrullus lanatus)
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Rana Kurum, İbrahim Çelik, and Ahmet Eren
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Fruit quality ,Grafting ,Rootstock ,Yield ,Watermelon ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
In this study the effects of rootstocks on watermelon fruit quality and yield were investigated by comparing grafted plants with non-grafted and self-grafted ones in open field conditions in over two consecutive years (2013-2014). The watermelon cultivar Crimson Tide was grafted onto Ferro RZ, Maximus, Nun 9075, RS 841, No:3, Strong Tosa and TZ 148 rootstocks. Non-grafted and self-grafted plants were used as control. Grafting increased the average fruit yield between 17.45% and 52.56% compared to non-grafted treatment. It was concluded that among the tested rootstocks No:3 along with Nun 9075 and TZ 148 rootstocks can be advised due to the increase in fruit yield, total soluble solids and taste panel test values and that the use of grafted plants can be advantageous alternative in watermelon production for producers.
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- 2017
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32. Ni3Al partikülleri ile pekiştirilmiş bronz matrisli kompozitlerin kuru sürtünme ve aşınma davranışları
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İbrahim ÇELİKYÜREK and Aytaç BİÇER
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metal matrix composites ,brake lining ,strength ,hardness ,friction and wear ,metal matrisli kompozitler ,fren balatası ,mukavemet ,sertlik ,sürtünme ve aşınma ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Ni3Al partikülleri ile pekiştirilmiş bronz esaslı kompozit klasik toz metalurjisi (TM) tekniği ile üretilmiştir. Pekiştirici olarak kullanılan partiküller döküm Ni3Al alaşımının bilyeli değirmende öğütülmesiyle üretilmiştir. Bronz alaşımı bileşenlerinin tozları ve Ni3Al (ağ. %1, 75-100mm partikül boyutunda) karıştırılmış, eksenel olarak sıkıştırılmış ve sinterlenerek kompozit malzeme elde edilmiştir. Kompozit ışık mikroskobu ve taramalı elektron mikroskobu kullanılarak karakterize edilmiştir. Basma mukavemetleri ve sertlikler belirlenmiştir. Kompozitin ve pekiştirilmemiş bronzun tribolojik özellikleri disk üzerinde pim geometrisinde belirlenmiş ve sonuçlar geleneksel fenolik reçine ile bağlanan fren balatası ile karşılaştırılmıştır. Sonuçlar TM bronzun kompozitten daha mukavemetli olduğunu göstermiştir. Kompozitin sertliği TM bronzdan daha yüksektir. Sürtünme ve aşınma testleri kompozitin aşınma direncinin ve sürtünme katsayısının geleneksel balatadan daha yüksek olduğunu açığa çıkarmıştır.
- Published
- 2017
33. Development of longer pepper resistant lines to Potato Virus Y (PVY)
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İbrahim ÇELİK, Ramazan ÖZALP, Nejla ÇELİK, Görkem SÜLÜ, and Abdullah ÜNLÜ
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Long type pepper ,Pvr4 gene CAPS marker Mechanical inoculation ,Pvr4 gene ,CAPS marker ,Mechanical inoculation ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Pepper (Capsicum annuum L.), is one of the most important vegetable species produced both in the world and in Turkey. Turkey is in third place in pepper production in the world. There are many viruses affecting and limiting pepper production. Potato Y virus (PVY), a member of the genus potyvirus, is one of the most common viruses infecting pepper crops. Improving resistant pepper varieties against the disease is more advantageous and easy way to control disease in production area. There are 4 races such as PVY0, PVY1 and PVY1-2 in the world. The dominant Pvr4 resistance gene in wild type SCM 334 pepper confers a complete resistance to the three pathotypes of potato virus. In this study, resistant genotype SCM 334 and susceptible long pepper inbred line were crossed to improve resistance in breeding lines. To eliminate the undesirable characteristics of the resistant genotypes, resistant line was backcrossed three times with susceptible genotypes. Mechanical inoculation and molecular methods were used to determine the reaction of backcross progenies to the disease. The dominant CAPS markers were used to determine resistant and susceptible plants and results from the mechanical inoculation method were verified with the CAPS marker. This study is a part of “Improvement of F1 Hybrid Vegetable Varieties and Qualified Lines in Turkey” basic project and financed by Scientific and Technological Research Council of Turkey (TUBITAK-KAMAG 109G029).
- Published
- 2013
34. Exploring the complex associations among risks of malnutrition, sarcopenia, and frailty in community-dwelling older adults
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Halil Ibrahim Celik, Ferda Koc, Kübra Siyasal, Büsra Ay, Nazlı Bengu Ilter, and Ozge Mengi Celik
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Sarcopenia ,Frailty ,Elderly ,Mediator Effect ,Moderator effect ,Geriatrics ,RC952-954.6 - Abstract
Abstract Background Malnutrition, sarcopenia, and frailty are age-related conditions that are associated with multiple health-related negative outcomes. However, the complex associations between them remain to be elucidated. The aims of the study were to explore: (1) whether the risk of sarcopenia has a mediator effect on the association between risks of malnutrition and frailty; and (2) whether physical activity (PA) level modulates this mediator effect in community-dwelling older adults. Methods This cross-sectional study involved 593 older adults (62.73% female; mean age = 71.35 ± 5.86 years). The Mini Nutritional Assessment-Short Form (MNA-SF), the SARC-F Questionnaire, and the FRAIL Questionnaire were used to assess the risks of malnutrition, sarcopenia, and frailty, respectively. The International Physical Activity Questionnaire Short Form (IPAQ-SF) was employed to assess PA level. Using the Hayes PROCESS macro (Models 4 and 7), mediation and moderated mediation analyses were performed. Results The mediation analysis demonstrated that the MNA-SF had a significant effect on the SARC-F (B=-0.325; p
- Published
- 2024
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35. Reklam etiği mi etik reklam mı? Reklamlarda karşılaşılan sorunlar ve reklam etiği
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İbrahim Çelik and İsmail Aysad Güdekli
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Etik, Reklam, Reklam Etiği, Reklamda Etik. ,Communication. Mass media ,P87-96 - Abstract
Günümüzde ürün çeşitliliğinin artması, yeni ürünlerin ortaya çıkması ve aynı işlevi gören, aynı içeriği ihtiva eden, fiyat olarak birbirine yakın ürünlerin varlığı nedeni ile tüketicilerin benzer ürünler arasından seçim yapması zorlaşmakta, bu seçim aşamasında yönlendirici temel faktörlerden biri kitle iletişim araçları vasıtayla da sürekli karşımıza çıkarılan reklamlar olmaktadır. Reklamlar günümüz ekonomilerinin vazgeçilmez bir parçası ve artan rekabet ortamında ayakta kalabilme mücadelesi veren işletmelere, firmalara (müşterilerine) daha çok para kazandırmak adına bireyleri devamlı yönlendirmek suretiyle “güdümlenmiş ekonomilerin güdümlü tüketicileri” ne doğru evrimleştirmektedir. Reklamlar daha çok satış yaptırmak için insanları daha fazla tüketmeye yönlendirmekle birlikte bu işlevlerini etik kurallar çerçevesinde yapıp yapmadıkları, kamuoyunu doğru yönlendirip yönlendirmedikleri de cevabı aranan bir soru olarak karşımıza çıkmaktadır. Dolayısıyla bu çalışma ile felsefenin bir dalı olan etik perspektifinden hareket ederek, farklı parametreler de göz önüne alınarak reklam etiği ve reklamlarda karşılaşılan etik sorunlara ilişkin bir “durum analizi” yapılması amaçlanmıştır.
- Published
- 2014
36. Using the center of pressure movement analysis in evaluating spontaneous movements in infants: a comparative study with general movements assessment
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Halil Ibrahim Celik, Ayse Yildiz, Ramazan Yildiz, Akmer Mutlu, Ruhi Soylu, Kivilcim Gucuyener, Aysu Duyan-Camurdan, Esin Koc, Eray Esra Onal, and Bulent Elbasan
- Subjects
Center of pressure ,General movements assessment ,Spontaneous movements ,Quantitative movement analysis ,Cerebral palsy ,Pediatrics ,RJ1-570 - Abstract
Abstract Background Researchers have attempted to automate the spontaneous movement assessment and have sought quantitative and objective methods over the past decade. The purpose of the study was to present a quantitative assessment method of spontaneous movement using center-of-pressure (COP) movement analysis. Methods A total of 101 infants were included in the study. The infants were placed in the supine position on the force plate with the cranial-caudal orientation. In this position, the recording of video and COP movement data were made simultaneously for 3 min. Video recordings were used to observe global and detailed general movement assessment (GMA), and COP time series data were used to obtain quantitative movement parameters. Results According to the global GMA, 13 infants displayed absent fidgety movements (FMs) and 88 infants displayed normal FMs. The binary logistic regression model indicated significant association between global GMA and COP movement parameters (chi-square = 20.817, p
- Published
- 2023
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37. Relationship Between Sensory Processing and Motor Development
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Halil Ibrahim Celik, research assistant
- Published
- 2016
38. Clinical Features and Prognostic Factors of Hodgkin’s Lymphoma: A Single Center Experience
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Ugur Selek, Ibrahim Barista, Gülten Tekuzman, Saaddettin Kilickap, Ferah Yildiz, Ayse Kars, Yavuz Ozisik, Sukran Ulger, Ismail Celik, [Kilickap, Saadettin] Cumhuriyet Univ, Fac Med, Dept Med Oncol, Sivas, Turkey -- [Barista, Ibrahim -- Celik, Ismail -- Kars, Ayse -- Ozisik, Yavuz -- Tekuzman, Gulten] Hacettepe Univ, Inst Oncol, Dept Med Oncol, Ankara, Turkey -- [Ulger, Sukran -- Selek, Ugur -- Yildiz, Ferah] Hacettepe Univ, Inst Oncol, Dept Radiat, Ankara, Turkey, CELIK, ISMAIL -- 0000-0003-1182-3865, SELEK, UGUR -- 0000-0001-8087-3140, Sivas Cumhuriyet Üniversitesi, and İç Hastalıkları
- Subjects
medicine.medical_specialty ,diagnosis ,Dacarbazine ,lcsh:Medicine ,Single Center ,Health Care Sciences and Services ,General & Internal Medicine ,medicine ,Sağlık Bilimleri ve Hizmetleri ,B-cell lymphoma ,Cerrahi ,Gynecology ,Hodgkin's lymphoma ,treatment ,business.industry ,lcsh:R ,Original Articles ,General Medicine ,medicine.disease ,Chemotherapy regimen ,Lymphoma ,Vinblastine ,Surgery ,ABVD ,prognosis ,Hodgkin’s lymphoma,diagnosis,prognosis,treatment ,business ,medicine.drug - Abstract
2nd Medical Oncology Congress -- MAR 26-30, 2008 -- Antalya, TURKEY, WOS: 000320655000011, PubMed ID: 25207097, Background: Hodgkin's lymphoma (HL) is a B cell lymphoma characterized by the presence of Reed-Sternberg cells. HL comprises 1% of all cancer cases and 14% of all lymphoma cases. Aims: We designed a retrospective study to investigate the clinical features and prognostic factors of HL patients diagnosed at an experienced oncology centre. Study Design: Retrospective study. Methods: Demographic characteristics, histopathological and clinical features, treatment modalities and response to treatment were obtained from hospital records. Dates of initial diagnosis, remission and relapse, last visit and death were recorded for survival analyses. Results: We analysed data of 391 HL patients (61% male, 39% female; mean age 35.7+/-15.1 years). The most common classical HL histological subtype was nodular sclerosing HL (NSHL) (42.7%). The most common stage was II 50.4%. The most common chemotherapy regimen was doxorubicin, bleomycin, vinblastine and dacarbazine (ABVD) (70.6%). Five and 10-year survival rates were 90% and 84%, respectively. Early-stage patients with good prognostic factors had better overall and relapse-free survival rates. The presence of "B" symptoms, albumin level, Eastern Cooperative Oncology Group (ECOG) performance score, and LDH were prognostic factors that affect the survival in both univariate and multivariate analyses. Conclusion: This is the first study that demonstrates the demographic, clinical and prognostic features of HL patients in Turkey, and provides a general picture of the HL patients in our country.
- Published
- 2013
39. Investigation of the Relationship Between Sensory Processing and Motor Development in Preterm Infants.
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Celik HI, Elbasan B, Gucuyener K, Kayihan H, and Huri M
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- Cross-Sectional Studies, Female, Gestational Age, Humans, Infant, Newborn, Male, Infant, Premature, Psychomotor Performance
- Abstract
Objective: The aim of this study was to analyze the correlation between sensory processing and motor development in preterm infants., Method: We included 30 preterm and 30 term infants with corrected and chronological ages between 10 and 12 mo. We used the Test of Sensory Functions in Infants to evaluate sensory processing and the Alberta Infant Motor Scale to evaluate motor development., Results: The Spearman correlation test indicated a strong positive relationship between sensory processing and motor development in preterm infants (r = .63, p < .001)., Conclusion: Given the relationship between sensory processing and motor development in the preterm group, the evaluation of sensory processing and motor development in preterm infants was considered necessary for the effective implementation of physiotherapy assessment and interventions., (Copyright © 2018 by the American Occupational Therapy Association, Inc.)
- Published
- 2018
- Full Text
- View/download PDF
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