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Güç sisteminde akım ve gerilimin dalga formunun sinüsoidal formda olması gerekir. Fakat bu her zaman mümkün olmaz. Non-sinüsoidal gerilim veya elemanlar güç sisteminde harmoniklerin oluşmasına sebeb olur. Harmonikler güç sisteminde, ek ısıl kayıplara, rezona…

Elektrik sistemlerinin arızasız ve güvenli bir şekilde çalışabilmesi, akım ve gerilim gibi devre büyüklüklerin 50 Hz frekansta ve sinüsoidal formda olmasına bağlıdır. Bununla birlikte bir çok nedenlerden dolayı bu temel büyüklükler sinüsoidal özelliklerini k…

Milli Eğitim Bakanlığı tarafından en son 2017 yılında belirlenen öğretmen genel yeterlikleri, öğretmenlerin üniversite öğrenimleri süresince aldıkları eğitimle birebir ilişkili olmalıdır. Ayrıca branş bazlı olarak bakıldığında her branşın kendine ait yeterli…

In this study, combined thermal radiation and natural convection heat transfer problem are investigated in glass and plastic covered flat solar collector. The bottom plate that absorbs the sunlight and the ambient temperature are kept constant. Solar collector…

In this study, mixed convection heat transfer and fluid flow in a three-dimensional horizontal duct with three different geometries of cavity were investigated numerically. Air flows in a square duct which is heated by a cavity with triangular, a rectangular a…

The rapid increase in the world population and climate change due to industrialization require the preservation and sustainability of existing water resources. The calculation of drainage networks that are directly related to watershed management is very impor…

In order to investigate the relationship between variables, it is necessary to reveal the dependency structure between variables and because of this reason, the concept of “copula” is being used in statistics literature in recent years. The main purpose of the…

The continuity of life and the development of civilization are directly related to the correct and careful use of resources in the world. The 19th and 20th centuries are the centuries which involve greatest changes in the history of mankind. The industrial era…

The effectiveness of engaging in research practices on EFL teachers is an important area of study. Therefore, the present study was undertaken to investigate Turkish English teachers’ beliefs regarding the significance of research engagement in their teachin…

Point Cloud is widely used in reverse engineering services and in many architectural works. Because the Point Clouds contain elements that reach the extreme numbers; they have increased the need to develop new methods in their management, presentation and proc…

Oxidation process is the electrons transfer between two atoms and stands for a required part of aerobic life and our metabolism. Although problems may occur when the electron flow becomes disconnect, generating free radicals and reactive oxygen species. Free r…

Today, it is possible to access a lot of information by using medical imaging data (CT and MR). In recent years, CT and MR data have been processed and transferred to computer aided design (CAD) programs. In fact, these solid models modified in the CAD environ…

Derslerde yardımcı kaynak kullanılmasının öğretmen, veli ve öğrenci görüşlerine göre değerlendirilmesini amaçlayan bu araştırma, nicel ve nitel araştırma tekniklerine uygun olarak tasarlanmış tarama modeli niteliğinde bir araştırmadır. Araştırmanın çalışma g…

Otel işletmelerinde hizmet alan ve verenin insan olmasından dolayı etkin iletişim ve etkileşim önemlidir. Otel çalışanlarının kaliteli hizmet sunabilmeleri için psikolojik açıdan iyi oluş halleri önemli unsurlardan birisidir. Çalışanların hizmet odaklı çalış…

In recent years, nanofluids, the dispersion of nanoparticles with sizes less than 100 nm in base fluids, have been attracted the interest of many researchers due to their capability of enhancing thermophysical properties. In this review paper, experimental s…

The noble gas plasmas have significant importance due to their high ionization energies requiring high temperature plasma investigation of neutral atom interactions through an analytical calculation of the second virial coefficient (SVC) with preferably Mors…

Tekirdağ Province is located in the Thrace part of Marmara Region and the region can be declared as an agriculture and industry city. Karaidemir Dam Lake, which is being used for agricultural irrigation and drinking water supply and flood protection, is loca…

Meriç River is the longest river ecosystem of the Balkans and most lotic ecosystem in Thrace Region of Turkey. Tunca River is one of the most important tributary of Meriç River. Therefore it is significantly effective on the water quality of Meriç River. In …

In this study, a thermoelectric generator (TEG) system is designed for the generation of electricity from solar energy. A temperature difference between surfaces of TEG must be achieved for electricity generation. Heating is provided by a solar-powered two-p…

Trend analysis of precipitation play a significant role in the efficient water resources management, especially in arid and semi-arid regions. In this study, 48 years-long (1970-2017) annual precipitation data monitored at nine selected stations (Mardin, Adı…