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Öğe Comparative Analysis of Six Phase Induction Motor(2021) Sarıgül, İsmail; Özdemir, MehmetIn recent years, AC induction motors have replaced DC motor. The most important reason for this is that DC motors have a mechanical brush and commutator system that is subject to wear and tear over time. While DC motor drivers need a lot of maintenance due to this system, induction motors do not require almost any maintenance since this system is not available. In recent years, technological advances in the field of multiphase induction motors have led to a significant evolution. A lot of research has been done around the world and a lot of new and interesting developments have been reported to the literature. This paper provides information about six-phase induction. In addition, what kind of advantages the concept of multiphase provides and how this structure is formed contains information about them. The six-phase induction motor will be simulated through the MATLAB/SIMULINK package program and compare with three-phase induction motor. Both motors were run in simulation using the same parameters. At the end of the simulation, current, moment and speed graphs of the six-phase induction motor and three-phase induction motor will be drawn according to time. The study also included equations used during modeling and equivalent circuits belonging to a six-phase induction motor. It has been graphically shown that a six-phase induction motor is more advantageous than a three- phase motor. For example, in six-phase induction motors, the transition time to a continuous state is shorter. In addition, while the frequency of torque vibration increases, its amplitude decreases, the current value of each phase decreases, the stator copper losses are less than the three-phase induction motor. In motors, usually the power needed is divided by the number of phases. So the more phases there are, the greater the power carrying capacity. Today, multi-phase induction motor drives are used in special applications such as electric vehicles, space technology, aerospace applications, as moving power on ships, electric trains, which require high reliability and power.Öğe The effect of physical activity on level of anger among individuals with autism(Türk Spor ve Egzersiz Dergisi, 2018) Ilkım, Mehmet; Tanır, Halil; Özdemir, Mehmet; Bozkurt, İbrahimAbstract: This study was undertaken to investigate the effect of physical activity on anger level in autistic individuals. Study sample included parents of 40 autistic children (n=20 experimental and n=20 control) aged 10-14 years from Malatya Private Sevgi Yolu Rehabilitation Center. Three days a week for 16 weeks, the experimental group did the activities of one-hour walk, jogging, double-leg jump, and walking along a balancing beam. Individuals in the control group continued their daily routine without participating in any activity during this period. Anger levels of autistic individuals were identified using the Trait Anger and Anger Expression Inventory (TAAEI) developed by Spielberger et al. (1983) and adapted to Turkish by Özer (1994). The inventory was completed by the parents of the individuals both in the experimental and control groups following the 16-week activity program. The collected data was analyzed at the significance level of 0.05 (i.e. a confidence level of 95%) in SPSS version 22.0. Statistical analysis indicated significant differences between trait anger, controlled anger, expressed anger and suppressed anger scores (p<0.05). The results showed that anger levels of the autistic individuals participating in the physical activity program were lower and the physical activity in autistic individuals helped anger control. It is recommended that autistic individuals participate in low intensity activities for at least 3 days a week. By teaching autistic individuals how to keep their anger under control, interpersonal and family conflicts, feelings of guilt, low self-esteem and some behavioral (e.g. shyness, crying, unhappiness, anorexia, bulimia) and physiological problems (e.g. sweating, headache, difficulty in breathing) can be avoided.Öğe Malatya il merkezindeki mevcut spor tesislerinin planlama, işletmecilik ve sayısal açılardan değerlendirilmesi(İnönü Üniversitesi, 1998) Özdemir, MehmetMalatya ilindeki spor tesisinin verimlilik düzeyini araştırmak eksik yanlarını tesbit edip bu eksikliklerin giderilmesine ilişkin çözümler bulmaktır. Malatya'da kayıtlı bulunan toplam 52 adet spor tesisi bulunmaktadır. Bu tesislerin 14 adedi G.S.İ.M.'ne ait, 7 Adet'i O. ö. K'na ait, 5 adet'i K. K. K'na ait 26 adet'i ise özel sektöre aittir. Bu 52 adet tesisin hepsine 50 sorudan oluşmuş anket düzenlenmiştir. Spor tesisleri çağdaş spor tesis tanımına ne derece uymaktadır. Spor tesisleri kuruluş amacının dışında kullanıldığı spor tesislerinin verimli kullanılmamasının nedenleri, teknik, donanım, personel, yönetici ve yasal düzenlemelere uyulmadığı görülmüştür. Spor tesislerinin, okul dışı gençliğe, spor kulüplerine gerekli hizmet vermediği ortaya çıkmıştır. Malatya'daki spor tesislerinin nüfusa göre yeterli olmadığı. Spor tesislerinin halka yeterince yönelmediği. Tesislerin temizliğinin yeterli yapılmadığı. Tesislerde çalışan personelin eğitim seviyelerinin düşük olduğu. Personelin sağlık bilgilerinin az olduğu, Tesislerin mesai saatleri dışında özellikle resmi kurumların yeterli derecede açık olmadığı. Spor salonlarında bir spor kitaplığı bulunmadığı ve halkın hizmetine sunulmadığı. Spor salonlarının işletilmesi yerinde değil merkezden yönetimle yapıldığı. Salon, siyasi parti çalışmaları, konserler için kiraya verilirken sürekli bürokratik işlemlerin caydırıcı olduğu. Salonlara ek binalar yaparak veya en başta planlanarak aerobik ve bady salonları halkın hizmetine açılmadığı. Modern manada kantin ve kafeteryaların salonlarımıza planlanmadığı görülmektedir. Sporcuların sağlıklı ve üretken olması için spor tesislerinin spor yapanlara açık olması ve tesisten faydalanan kişilerin sigortalı olması gerekmektedir.Öğe Sinüzoidal Darbe Genişlik Modülasyon Tekniği ile Beş Fazlı Asenkron Motorun Matlab/Simulink Modeli(2021) Taşkın, Ezgi; Özdemir, Mehmet; Sarıgül, İsmailÖz: Günümüzde üç fazlı asenkron motorların kullanımı yaygın olmasıyla birlikte gelişen teknolojiye paralel olarak çok fazlı (3’ten fazla) asenkron motor kavramı ortaya çıkmıştır. Çok fazlı asenkron motorlar geleneksel üç fazlı asenkron motorlara göre birçok avantaja sahiptir. Özellikle yüksek güç gerektiren uygulamalarda, elektrikli ve hibrit araçlarda, hava ve deniz taşıtlarında vs. kullanılmaktadır. Çok fazlı asenkron motorlar genellikle inverterlerle beslenmektedir. İnverterin çıkışındaki harmonikler o dalganın kalitesinin belirlenmesindeki en temel unsurdur. Harmonik bozulmaların önüne geçmek için çeşitli yöntemler kullanılarak çıkış dalga şeklinin sinüse yakın olması amaçlanmaktadır. Bu yöntemlerden biri de sinüzoidal darbe genişlik modülasyon tekniğidir. Bu çalışmada sinüzoidal darbe genişlik modülasyon yöntemi ile beş fazlı asenkron motorun kontrolü yapılmıştır. Beş fazlı asenkron motora ait matematiksel denklemler kullanılarak, beş fazlı asenkron motorun simulink model uygulaması d-q referans çerçevesinde oluşturulmuştur. Benzetim modelleri MATLAB/Simulink paket programında gerçekleştirilmiştir.Öğe Six year distribution pattern of hepatitis C virus in Turkey a multicentre study(Biotechnology & Biotechnological Equipment, 2015) Altındiş, Mustafa; Dal, Tuba; Akyar, Işın; Karatuna, Onur; Gökahmetoğlu, Selma; Tezcan Ülger, Seda; Külah, Canan; Uzun, Berrin; Şener, Aslı Gamze; Özdemir, Mehmet; Aydoğan, Sibel; Kuşkucu, Mert Ahmet; Midilli, Kenan; Otlu, Barış; Celen, Mustafa Kemal; Buruk, Kurtuluş; Güdücüoğlu, HüseyinHepatitis C infection is a public health problem. The aim of this retrospective study was to determine the distribution of hepatitis C virus (HCV) genotypes in seven regions of Turkey, by evaluating 7002 patients with chronic HCV in a six-year period. During the 2009 2014 period, serum/plasma samples from 7002 new consecutive HCV RNA positive patients were collected. The female patients were 3867 (55.2%). The genotype distribution of HCV patiens was evaluated by ages and years. Statistical analysis was performed by using the Mann Whitney test and the x2 analysis. During the six-year period, genotype 1b was the most common genotype (67.7%) followed by untypeable genotype 1 (7.7%), genotype 4 (7.3%) and genotype 3 (6.7%). In 2014, genotype 3 was the second most common one (11.3%) and genotype 4 was the third most common one (9.8%). In the group with <25 years old patients, genotype 1b was most common (78.48%, 62/79) between the years of 2009 and 2011, whereas genotype 3 (34.8%, 86/247), between the years of 2012 and 2014. Genotype 1b was the most common in the groups between 26 and 35 years, 36 and 45 years, 46 and 55 years, 56 and 65 years. The rate of genotype 3 was increased from 4.78% to 10.06% and the rate of genotype 4 was increased from 1.3% to 3.84%, from 2009 2011 to 2012 2014. In recent years, genotypes 3 and 4 have gained importance. New therapeutic strategies and survey studies may be required for the modified HCV genotype pattern.Öğe Sports injuries in 15-17 year-old male athlete students participating on school teams(2018) Şeker, Tarık; Ilkım, Mehmet; Tanır, Halil; Özdemir, MehmetAbstract: The purpose of this study is to determine the frequency of the sports injuries in 15-17-year-old male athlete students participating on school teams (volleyball, basketball, football and handball) and their level of knowledge about these injuries. The sample of the research consists of 233 athlete students (n=89 footballers, n=37 volleyball players, n=46 basketball players and n=61 handball players) in 15–17 age group participating on school teams of thirteen different high schools in Kütahya. The questionnaire form developed was used to determine the injuries in athlete students that participated in the study. The data was analysed using SPSS version 22.0. According to the statistical analysis, it was found that the athlete students who got injured most were of footballers with %45.2 (n=47) and those who got injured least were volleyball players with %10.6 (n=11). It was seen that injuries occurred mostly during competitions (n=82). The majority of the athlete students reported that they had very little (n=117) and average (n=107) information on sports injuries. The results showed that injuries occurred more in football and handball players and mostly during competitions. Protective measures need to be taken in the sports, especially in football, handball and basketball, where tackles are frequently experienced during competitions. Also, it was seen that athlete students had very limited knowledge about sports injuries.Öğe Viral enfeksiyonlarda matematiksel modelleme(İnönü Üniversitesi, 2022) Özdemir, MehmetDört bölümden oluşan bu tezin birinci bölümünde matematiğin diğer disiplinlerdeki kullanımından genel olarak bahsedildikten sonra salgın hastalıkların matematiksel modellenmesi konusunda literatür bilgisine yer verilmiştir. İkinci bölümde tezde geçen matematiksel bazı kavramlar ve teoremler tanıtılmıştır. Tezin üçüncü bölümünde ise bir salgın hastalığı belirtisiz olarak (asemptomatik) geçiren bireylerin yani taşıyıcıların da yer aldığı bir salgın modeli matematiksel olarak ele alınmış ve analiz edilmiştir. Sonuç bölümünde ise tezde sunulan temel sonuçlar verilmiş ve modelin klasik modellerden ayrıştığı yönleri vurgulanmıştırÖğe Yahya Kemal ve nesirlerinde eğitim(İnönü Üniversitesi, 1990) Özdemir, Mehmet[Abtsract Not Available]
