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Bulunan: 223 Adet 0.003 sn
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Erişime Açık

Knowledge of parents about bruxism in their children

Ebru DELİKAN

Objective: Bruxism is a jaw muscle activity disorder characterized by clenching or grinding of the teeth and can be seen in both children and adults. The purpose of this study is to evaluate the parental knowledge about bruxism in children. Methods: A cross-sectional study was conducted with 265 parents whose children were attended at University of Mersin pediatric dentistry and oral and maxillofacial surgery clinics. Children’s ages varied from 6 months to 16 years old. A 20-questioned questionnaire was used to collect the data. IBM SPSS Statistics 22 for statistical analysis (SPSS IBM, Turke ...Daha fazlası

Makale/Derleme 2020 Odovtos International Journal of Dental Sciences22 ( 1 ) , pp. 1 - 132 14 Görüntülenme
Erişime Açık

Effect of internal derangements and degenerative bone changes on the minimum thickness of the roof of the glenoid fossa in temporomandibular joint

Hatice Cansu KIŞ

Objectives: The aim of this study is to investigate the effect of internal derangements and degenerative bone changes on the minimum thickness of the roof of the glenoid fossa (RGF). Methods: MRI and cone beam CT records of temporomandibular joints (TMJ) of 68 patients were evaluated retrospectively in this study. The joints were divided into three groups according to TMJ disc status which had been diagnosed in MRI: normal disc status, anterior disc displacement with reduction, and anterior disc displacement without reduction. Cone beam CT was used to evaluate the degenerative bone changes of ...Daha fazlası

Makale/Derleme 2019 Oral Radiology 8 Görüntülenme
Erişime Açık

The evaluation of the mandibular bone structure changes related to lactation with fractal analysis

Hatice Cansu KIŞ

Objectives Lactation-induced bone loss of lumbar spine, hip, femur and distal radius are well documented in the literature. The aim of this article is to investigate whether lactation afects the trabecular and cortical bone structure of human mandible. Methods 120 dental panoramic radiographs (DPR) of the lactating women who were breastfeeding for 3–6 months (study group) and 120 DPRs of the nulliparous women (control group) were evaluated. Regions of interest (ROI) were chosen from the geometric center of ramus, the geometric center of angulus and the cortical bone. ROIs were examined with fr ...Daha fazlası

Makale/Derleme 2019 Oral Radiology 7 Görüntülenme
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A new hybrid decision making approach for housing suitability mapping of an urban area

Burcu ORALHAN

In urban planning, housing evaluation of residential areas plays a critical role in promoting economic efciency.Tis study produced an evolutionary-based map through the combination of hybrid Multicriteria Decision Making (MCDM) and Geographical Information System (GIS) by assessing suitability of housing location. Suitable locations were modelled and determined with the present study from very low suitability to very high suitability. In the frst stage, Fuzzy DEMATEL (the Decision Making Trial and Evaluation Laboratory) and Covariance Matrix Adaptation Evolutionary Strategy (CMA-ES) under fuzz ...Daha fazlası

Makale/Derleme 2018 Mathematical Problems in Engineering. 6 Görüntülenme
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Smart city a plication: Internet of things (IOT) technologies eased smart waste collection using data mining approach and ant colony optimization

Zeki ORALHAN | Burcu ORALHAN

Globally today, Living in urban areas is more preferred than in living rural areas. This situation creates many problem for urban living. One of the big problem is waste management in urban areas. Optimizing waste collection has become very important phenomenon for being smart city. In this study, we aimed to optimize waste collection for reduce both cost of collection and pollution effect of environment. We designed a garbage container integrated sensors for measuring fill level of container, temperature, and ratio of carbon dioxide inside the container. We transmitted all information to our ...Daha fazlası

Makale/Derleme 2017 International Arab Journal of Infırmation Technology 5 Görüntülenme
Erişime Açık

Environmental Kuznets curve hypothesis for sub-elements of the carbon emissions in China

Onur GÖZBAŞI

The purpose of this paper was to investigate the validity of the environmentalKuznets curve (EKC) hypothesis for the period between 1977 and 2013 by using the sub-elements of carbon (CO2) emissions in China. To this end, the fully modified ordinary leastsquares and pairwise Granger causality methodologies have been employed. As a result, itis found that financial development leads to an improvement in environmental performancein China for many kinds of pollution, including the following: liquid fuel pollution, solidfuel pollution, residential buildings and commercial and public services pollutio ...Daha fazlası

Makale/Derleme 2016 Natural Hazards82 ( 2 ) , pp. 1 - 1340 5 Görüntülenme
Erişime Açık

Determination of the risk factors that influence occurence time of traffic accidents with survival analysis

Burcu ORALHAN

Background: This study aimed to determine risk factors that occurrence time of traffic accidents. Traffic accident occurrence time is defined as the time between a driver’s getting his/her license and having the first accident, involving death or injury between 2008-2012 and there were investigated. Methods: This study was conducted with the Cox Regression and life tables models included among survival analysis models. Data of all 11.671 traffic accidents in Kayseri in Turkey were analyzed for the 5-yr period. Results: The non-occurrence rate of traffic accidents involving injury is mostly aff ...Daha fazlası

Makale/Derleme 2018 Iranian Journal of Public Health 6 Görüntülenme
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Re-examining the Turkish stock market efficiency: Evidence from nonlinear unit root tests

Onur GÖZBAŞI

This paper re-examines the efficient market hypothesis (EMH) in the Turkish stock market by utilizing the recent developments in nonlinear unit root tests. To this end, we first employ the linearity test developed by Harvey et al. (2008) and then carry out the nonlinear ESTAR unit root test recently developed by Kruse (2011). The results show that Borsa Istanbul stock price index series have nonlinear behavior and follow the random walk (non-stationary) process, supporting the EMH in Turkish stock market which has weak-form efficiency.

Makale/Derleme 2014 Eonomic Modelling 5 Görüntülenme
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A new step size control technique for blind and non-blind equalization algorithms

Ali Özen

A new variable step size (VSS) control technique employing cross correlation between channel output and error signal has been proposed as a solution to the problem of slow convergence of blind and non-blind equalization algorithms. The new method resolves the conflict between the convergence rate and low steady state error of the fixed step-size conventional blind and non-blind equalization algorithms, such as Constant Modulus Algorithm (CMA) and Least Mean Squares (LMS) algorithm. Computer simulations have been performed to verify the performance of the proposed method in frequency selective ...Daha fazlası

Makale/Derleme 2013 Radioengineering Journal 10 Görüntülenme
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Kaotik haberleşme sistemleri için yeni bir uyarlanır kör kanal denkleştirici

Ali ÖZEN

Bu bildiride, kaotik haberleşme sistemleri için bulanık mantık üzerine kurulan yeni bir kör kanal denkleştirici önerilmektedir. Klasik haberleşme sistemleri için ters süzgeçleme kriterleri (Inverse Filtering Criteria, IFC) tabanlı algoritma, süper üstel algoritma (Super Exponential Algorithm, SEA) ve sabit genlik algoritması (Constant Modulus Algorithm, CMA) en popüler üç kör kanal denkleştirme algoritmasıdır. Ancak bu algoritmalar, kaotik haberleşme sistemleri için istenen başarım değerlerinde yeterli olmamakta ve geliştirilmeleri gerekmektedir. Bu çalışmada, kaotik haberleşme sistemleri için ...Daha fazlası

Bildiri 2019 IEEE 27th Signal Processing and Communications Applications SIU 2019 , pp. 1 - 4 10 Görüntülenme
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5G sistemleri için sıfır sonlu ayrık kosinüs dönüşümü yayılmalı ofdm dalga biçimi

Ali ÖZEN

Bu bildiride, 5. nesil (5th Generation, 5G) dalga biçimi geliştirme çalışmalarına alternatif olarak sıfır sonlu ayrık Kosinüs dönüşümü yayılmalı OFDM (zero tail discrete cosine transform spread OFDM, ZT DCT-S OFDM) dalga biçimi önerilmektedir. Önerilen yöntemin başarımını doğrulamak ve klasik OFDM ile sıfır sonlu ayrık Fourier dönüşümü yayılmalı OFDM (ZT DFT-S OFDM) sistemleriyle karşılaştırmak için frekans seçici Rayleigh sönümlemeli kanallarda bilgisayar benzetimleri yapılmaktadır. Elde edilen benzetim sonuçları önerilen ZT DCT-S OFDM yönteminin klasik OFDM ve ZT DFT-S OFDM yönteminden daha ...Daha fazlası

Bildiri 2018 IEEE 26th Signal Processing and Communications Applications SIU 2018 , pp. 1 - 4 10 Görüntülenme
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Sıfır sonlu unique word ayrık sinüs dönüşümü yayılmalı OFDM

Ali ÖZEN

Bu bildiride, sıfır sonlu ayrık Sinüs dönüşümü yayılmalı OFDM üzerine kurulan yeni bir unique word (UW) OFDM (ZT UW DST-S OFDM) dalga biçimi önerilmektedir. Önerilen dalga biçimi, veri simgelerinin gönderilen sinyalin kuyruğu üzerindeki etkisini ortadan kaldırarak ZT DST-SOFDM ve UW OFDM yöntemlerini geliştirmektedir. Önerilen yöntemin başarımını test etmek için frekans seçici Rayleigh sönümlemeli kanallarda bilgisayar benzetimleri yapılmaktadır. Elde edilen sonuçlardan önerilen dalga biçiminin klasik OFDM, ZT DFT-S OFDM ve ZT UW DFT-S OFDM sistemlerinden daha iyi tepe ortalama güç oranı (PAPR ...Daha fazlası

Bildiri 2018 IEEE 26th Signal Processing and Communications Applications SIU 2018 , pp. 1 - 4 9 Görüntülenme
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