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Bu çalışmada 20 farklı Türk üniversitesinde okuyan birinci sınıf ilköğretim matematik öğretmeni adaylarının sayı öğretme bilgilerinin çeşitli demografik değişkenler tarafından nasıl yordandığı araştırılmıştır. Veriler birinci sınıfın hemen başında, Aydın [1]…

The industrial–style designs affecting today’s perception of designs in a huge velocity has emerged first by the industrial revolution. Although being time–dependent and taking longer time and economically highcost product, the handcraft has allowed the indus…

Climate change and environmental concerns led the investors to search for environmentally sustainable and friendly investments. Green bonds market has emerged as a result of this need. This study aims to analyze this market focusing on market efficiency. Marke…

In order to increase the performance/cost ratio of solar cells, new approaches reducing optical and electrical losses are necessary during the absorption of the light and collection of charge carriers. In this work we focused on various textures on Si surface …

Contact pressure is very critical for wear test. In order to make true wear experiment, counter body, surface, wear load, surface roughness, and the hardness of materials should be selected correctly. Maximum contact pressure forms at hertz point. In this stud…

The new material type is ‘cryogels’, which have important potential in biotechnology applications. Cryogels can be obtained from natural or synthetic polymers. It is seen that cryogens prepared from natural polymers become a preferred material group for tissue…

İnsanoğlunun hayatını devam ettirebilmesi için, yaşamı boyunca her türlü yapıya ihtiyaç duymaktadır. Bu bazen çok katlı bir yapı, bazen ise köprü kolonu ya da kirişi olabilmektedir. Yapısal bir eleman olan kolon veya kiriş ister köprüde ister binada kullanılsı…

Bu çalışmada doğalgaz borularının kaynaklanabilirliğinin tespiti için API 5L X52 kalite 21,3 mm (1/2 inç) yarıçapında 2,8 mm et kalınlığına sahip borular 100 mm boyutlarında kesilmiş ve kaynak ağzı açılmıştır. Kaynak ağzı açılmış olan numuneler oksigaz, elektr…

Researchers attention on the optimization methods to solve several applications increases recently by the advances in the technological field. The Artificial Bee Colony algorithm that has been quite popular during the recent years is firstly used in this study…

Bir şehrin gece manzarası, o şehrin gece boyunca yeniden tanıtılması olarak değerlendirilebilmektedir. Hatta  kimi zaman gece manzarası insanların şehir hakkındaki düşünceleri üzerinde daha fazla etki bırakabilmektedir. Karanlık bir manzara deneyimi fikri, yum…

This study was carried out to determine the status of Turkey's agricultural support, premium system and the effect of premium payment on the producer. Firstly, in this study was examined the effect of premium system application on cotton, sunflower, soy and co…

It is well known that non-Gaussian noise deteriorates the detection performances of the conventional detection methods. This problem is also encountered in cognitive radio where impulsive structure of noise negatively affects spectrum sensing. Multistage detec…

Östenitik paslanmaz çelik malzemeler düşük ısıl iletkenlik ve yüksek korozyon direnci gibi özelliklerinden dolayı yaygın olarak kullanılmaktadır. Bu çalışmada AISI 304 ve AISI 316 L östenitik paslanmaz çelikler karbür kaplamalı kesici takımlar ile parmak freze…

Bu çalışmanın amacı, Al2O3 ve SiO2 kaynağı olarak seramik üretiminde kullanılan 5 farklı kaolenin jeopolimer üretiminde kullanılabilirliğinin araştırılmasıdır. Bu amaçla beraber öğütülen kaolen-NaOH karışımları su ile birleştirilip preslenmiştir. Taze jeopol…

In this talk, we work on a model of the prey-predator system to see the effect of system components on species distribution for both temporal and spatial structure. In some cases, changing environmental conditions results in extinction or leads the survival …

Because of the great earthquakes that have occured for centuries, many loss of lifes and goods have been experienced all over the world. Our country is located on active seismic zone. Many great earthquakes have also occurred in our country and have caused man…

The high consumption of surfactants throughout the world (more than 15 million tons/year), together with their toxicity and negative effect on the self-purification capability of surface waters, make these synthetic organic compounds one of the main environmen…

With the effect of globalization, a significant change and transformation have been experienced. As a result of this change, developments in knowledge and information technologies caused an intense competition among both countries and businesses. In such an …

Infill walls in reinforced concrete buildings produce a strong effect on the strength and deformation capacity of the buildings. In practice, a partial or full absence of infill walls at the first stories may become one of the reasons for vertical irregularity…

Open channel flow is defined as fluid flow with a free surface open to the atmosphere. One of the main sources of resistance in open channel flow is the roughness of channel bed. The roughness of channel base and side walls must be considered seperately invest…