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Association of Personality Traits and Risk of Internet Addiction in Adolescents
Candan €Oztürk,Murat Bektas,Dijle Ayar,Beste €Ozgüven €Oztornacı,Dilek Ya gcı 한국간호과학회 2015 Asian Nursing Research Vol.9 No.2
Purpose: This cross-sectional, descriptive study analyzes the association between personality traits and internet addiction in adolescents. Methods: The study was conducted with 328 adolescents attending two high schools in the Aegean region of Turkey. The data were collected using a sociodemographic information questionnaire, the Internet Addiction Scale and the Adjective Based Personality Scale from students who gave their informed consent to participate. Data were assessed by descriptive statistics, t tests, and logistic regression analysis, using SPSS software. Results: The students had an average age of 16.43 ± 1.47 years and 40.5% were female. The percentage of subjects at risk of internet addiction was 15.9% (n = 52), and 42.4% (n = 22) of them reported that the amounts of time they spent online was acceptable. We found statistically significant differences in the average subdimensional scores for extraversion (t = 2.310, p < .050) and openness to experience (t = 3.35, p < .001), and between students at risk of internet addiction (n = 52) and those who were not (n = 276). Conclusions: Adolescents who were found to be at risk of internet addiction nevertheless reported on the survey questionnaires that the amount of time they spent online was acceptable. The study determined that participants' risk of internet addiction was associated with their levels of extraversion and openness to experience.
A New Approach to Objective Evaluation of the Success of Nasal Septum Perforation
Ozturk, Sinan,Zor, Fatih,Ozturk, Serdar,Kartal, Ozgur,Alhan, Dogan,Isik, Selcuk Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.4
Background Perforations in the nasal septum (NSP) give rise not only to disintegration of the septum anatomy but also impairment in normal nasal physiology. The successes of these surgical techniques are usually equated to anatomical closure of the perforation. The goal of this study is to evaluate the subjective and objective results of our surgical technique for septal perforation surgery. Methods All NSPs in the six patients were closed by inferior turbinate flap. The Nasal Obstruction Symptom Evaluation (NOSE) instrument was used to evaluate the preoperative and postoperative subjective sensation of nasal obstruction. Measurement of preoperative and postoperative nasal airway resistance was performed using active anterior rhinomanometry which is an objective test. Wilcoxson signed rank test and Spearman correlation test were used to analyze correlation between NOSE scores and rhinomanometric measurements. Results The full closure of the septal perforations was noted in 100% of patients. The total NOSE score was 14 preoperatively and one postoperatively. The improvement in NOSE scores was statistically significant ($P{\leq}0.002$). The mean preoperative total resistance (ResT150) value was $0.13Pa/cm^3s^{-1}$, which is below the normal range ($0.16-0.31Pa/cm^3s^{-1}$), while the mean postoperative ResT150 value was $0.27Pa/cm^3s^{-1}$. The correlation between the improvement in NOSE scores and improvements in ResT150 values was statistically significant. Conclusions Surgical approaches should aim to solve both the anatomical and physiological problems of NSP. The application of subjective and objective tests in the postoperative period will help surgeons assess the applied techniques.
NO<SUB>x</SUB> emission modeling at cement plants with co-processing alternative fuels using ANN
Betul OZTURK,Onur OZTURK,Aykan KARADEM?R 대한환경공학회 2022 Environmental Engineering Research Vol.27 No.5
The use of wastes as alternative fuel (AF) at the cement plants for clinkerization processes has increased in recent years as sustainable waste management. Such co-processing of AFs at cement plants causes some changes in the composition of the plant emissions, depending on waste type, kiln thermal power, thermal substitution rate, etc. Emissions of nitrogen oxides (NOx) are among the major environmental concerns in these plants. The paper includes a modeling study of NOx emissions at a cement plant during the co-processing of AFs. Due to the non-linear characteristic of the relationship between operational parameters and NOx emissions, the artificial neural network (ANN) approach was applied and studied. The study showed that NOx emissions can be predicted satisfactorily by using ANN at cement plants. Therefore, the model proposed may be used by cement plant operators to estimate their emission levels before starting the use of a new fuel source.
A New Approach to Objective Evaluation of the Success of Nasal Septum Perforation
Sinan Ozturk,Fatih Zor,Serdar Ozturk,Ozgur Kartal,Dogan Alhan,Selcuk Isik 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.4
Background: Perforations in the nasal septum (NSP) give rise not only to disintegration ofthe septum anatomy but also impairment in normal nasal physiology. The successes of thesesurgical techniques are usually equated to anatomical closure of the perforation. The goal ofthis study is to evaluate the subjective and objective results of our surgical technique forseptal perforation surgery. Methods: All NSPs in the six patients were closed by inferior turbinate flap. The NasalObstruction Symptom Evaluation (NOSE) instrument was used to evaluate the preoperativeand postoperative subjective sensation of nasal obstruction. Measurement of preoperative andpostoperative nasal airway resistance was performed using active anterior rhinomanometrywhich is an objective test. Wilcoxson signed rank test and Spearman correlation test were usedto analyze correlation between NOSE scores and rhinomanometric measurements. Results: The full closure of the septal perforations was noted in 100% of patients. The totalNOSE score was 14 preoperatively and one postoperatively. The improvement in NOSE scoreswas statistically significant (P≤0.002). The mean preoperative total resistance (ResT150) valuewas 0.13 Pa/cm3s-1, which is below the normal range (0.16–0.31 Pa/cm3s-1), while the meanpostoperative ResT150 value was 0.27 Pa/cm3s-1. The correlation between the improvement inNOSE scores and improvements in ResT150 values was statistically significant . Conclusions: Surgical approaches should aim to solve both the anatomical and physiologicalproblems of NSP. The application of subjective and objective tests in the postoperative periodwill help surgeons assess the applied techniques.
Onder Ozturk,Unal Ozturk,Sebnem Nergiz,M. Zulkif Karahan 대한심장학회 2016 Korean Circulation Journal Vol.46 No.6
Background and Objectives: Genetic influence on T-wave peak to End (Tpe) time in patients with a first anterior acute myocardial infarction (AMI) is uncertain. A polymorphism in the angiotensin-II type 1 receptor (AT1R) gene was discovered recently. The polymorphism consists of an A or C variant, given three different possible genotypes: AA, AC, CC. The purpose of this study was to determine the effects of polymorphism of the AT1R gene polymorphism on Tpe after a first anterior AMI. Subjects and Methods: The subjects were 142 patients (110 men, 32 women, 58±13 years) with a first anterior AMI; ten patients were excluded from this study. Based on the polymorphism of the AT1R gene, they were classified into two groups: Group 1 (AA genotype) of 91 patients and group 2 (AC and CC genotype) of 41 patients. A 12-lead resting ECG was recorded at admission to the coronary care unit in patients with anterior AMI and were manually measured with a ruler. QTc, QTd, QTcd, Tpe, Tpe/QT parameters were measured. Results: There was no significant difference in the baseline characteristics of patients (p>0.05). We found significant reduction in QTc, QTd, QTcd, Tpe, Tpe/QT indices Group 1 (AA genotype) (mean 66±28 ms) than group 2 (AC and CC genotype) (mean 95±34 ms) (p<0.05). Conclusion: In patients with a first anterior AMI, AT1R gene polymorphisms may influence on repolarization parameters. Although further studies are required.
GENERALIZED DERIVATIONS OF BCI-ALGEBRAS
Ozturk, Mehmet Ali,Ceven, Yilmaz,Jun, Young-Bae The Honam Mathematical Society 2009 호남수학학술지 Vol.31 No.4
The notion of generalized derivations of a BCI-algebra is introduced, and some related properties are investigated. Also, the concept of a torsion free BCI-algebra is introduced and some properties are discussed.
The Homotopy Perturbation Method for free vibration analysis of beam on elastic foundation
Ozturk, Baki,Coskun, Safa Bozkurt Techno-Press 2011 Structural Engineering and Mechanics, An Int'l Jou Vol.37 No.4
In this study, the homotopy perturbation method (HPM) is applied to free vibration analysis of beam on elastic foundation. This numerical method is applied on three different axially loaded cases, namely: 1) one end fixed, the other end simply supported; 2) both ends fixed and 3) both ends simply supported cases. Analytical solutions and frequency factors are evaluated for different ratios of axial load N acting on the beam to Euler buckling load, $N_r$. The application of HPM for the particular problem in this study gives results which are in excellent agreement with both analytical solutions and the variational iteration method (VIM) solutions for all the cases considered in this study and the differential transform method (DTM) results available in the literature for the fixed-pinned case.
Modified finite element-transfer matrix method for the static analysis of structures
Ozturk, D.,Bozdogan, K.,Nuhoglu, A. Techno-Press 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.43 No.6
In this paper the Modified Finite Element-Transfer Matrix Method, which is the combination of Transfer Matrix Method and Finite Element Method, is applied to the static analysis of the structures. In the method, the structure is divided into substructures thus the number of unknowns that need to be worked out is reduced due to the transformation process. The static analysis of the structures can be performed easily and speedily by the proposed method. At the end of the study examples are presented for ensuring the agreement between the proposed method and classic Finite Element Method.
PERMUTING TRI-DERIVATIONS IN PRIME AND SEMI~PRIME RINGS
Ozturk, M. Ali The Youngnam Mathematical Society Korea 1999 East Asian mathematical journal Vol.15 No.2
In this work, we study permuting tri-derivations and give an example.
ON GENERALIZED LIE IDEALS IN SEMI-PRIME RINGS WITH DERIVATION
Ozturk, M. Ali,Ceven, Yilmaz The Youngnam Mathematical Society Korea 2005 East Asian mathematical journal Vol.21 No.1
The object of this paper is to study($\sigma,\;\tau$)-Lie ideals in semi-prime rings with derivation. Main result is the following theorem: Let R be a semi-prime ring with 2-torsion free, $\sigma$ and $\tau$ two automorphisms of R such that $\sigma\tau=\tau\sigma$=, U be both a non-zero ($\sigma,\;\tau$)-Lie ideal and subring of R. If $d^2(U)=0$, then d(U)=0 where d a non-zero derivation of R such that $d\sigma={\sigma}d,\;d\tau={\tau}d$.