Because of the drawbacks related with the current corneal transplantation techniques such as donor shortage, rejection or disease transmission risk, there is still an urgent requirement in order to produce new treatments for regenerating corneal tissue. Specially, it is also necessary to overcome the problems related with the blindness and vision losses originating from damage to corneal endothelium. By considering these, corneal tissue engineering might possess an encouraging potential to ensure alternative and innovative approaches toward the development of effective corneal tissue equivalen ...Daha fazlası
3D realistic models are used in many fields such as engineering, archaeology, and city planning. The most effective technique used to create these models is the photogrammetry technique. The hardware and software features of the unmanned aerial vehicles to be used to implement this technique are of great importance. Many different unmanned aerial vehicles can be used for photogrammetric studies in the surveying and mapping industry, and therefore users have difficulties choosing needed unmanned aerial vehicles for their studies. In this study, 3D modelling performance and usage areas of popula ...Daha fazlası
The design of a compound mobile serial robot controlled remotely by a C# program utilizing the MQTT (Message Queuing Telemetry Transport) protocol is the main topic of this thesis. The robot is powered by a Raspberry Pi. The advantages of mobility and serial manipulators are combined in the compound mobile serial robot, allowing it to carry out difficult tasks in a variety of settings. As the main computer, the Raspberry Pi gives the robot and its control application connectivity and processing capability. Data interchange and command execution are made possible by the integration of the MQTT ...Daha fazlası
Fouling is the accumulation of undesired particles on heat transfer surfaces which affects the heat transfer performance of a heat exchanger negatively. The accumulation of these particles prevents heat from being transformed through the heat exchangers by generating a fouling layer-like insulation. The main aim of the thesis is to investigate the machine learning algorithms to classify and predict the fouling status of PHE used in combi-boilers, to generate the background of the predictive maintenance, besides investigating the fouling effect on PHEs in terms of heat transfer and energy consu ...Daha fazlası
The height of buildings in cities are of critical importance to urban planning and sustainable growth, as these factors are closely linked to environmental, economic, social, and aesthetic elements that shape the structure and character of cities. The main purpose of this study is to calculate building heights using machine learning algorithms based on airborne LiDAR and ICESat-2 data in urban areas. Sub-objectives of the study to achieve the main objective are: (a) investigate the relationships between spaceborne and airborne LiDAR data and integrate the data, (b) investigate the performance ...Daha fazlası
El hareketi tanıma, insan-bilgisayar etkileşimi için anlamlı el hareketlerinin sınıflandırılmasına yönelik bir prosedürdür. Yüzey elektromiyografisi (sEMG), amaçlanan hareketlerle ilgili içsel bilgileri taşıdığı için el hareketi sınıflandırma çalışmalarında sıklıkla kullanılmaktadır. Bu tez çalışmasında, zaman-frekans (TF) matrislerinden çıkarılan özellikler ile TF matrislerinden Negatif Olmayan Matris Çarpanlarına Ayırma (NMF) yöntemiyle çıkarılan özelliklerin sınıflandırma başarısının karşılaştırılması sunulmaktadır. TF matrislerini elde etmek için 4 kanallı sEMG sinyaline Çok Değişkenli Sen ...Daha fazlası
In this study, the Friction Stir Spot Welding (FSSW) method was employed to join thin AA6061-T4 series aluminum sheets. The AA6061-T4 alloy used in the study has various applications, including aerospace and automotive industries. During the joining process using the FSSW method, emphasis was placed on three parameters: tool rotational speed, pin length, and pin width, considering the advantages of the aluminum alloy used. A total of 12 welding operations were performed with different parameter combinations. The obtained specimens were examined for their mechanical properties, temperature meas ...Daha fazlası
Akarsu kavşakları doğal drenaj ağlarının temel unsurları olup oluşturdukları habitat yüksek ekolojik değer arz etmektedir. Yan kollardaki sediment yükü ve akım arasındaki etkileşim kavşak morfolojisini düzenleyen önemli bir faktördür. Yan koldan gelen sediment yükü ve debinin ana kanal boyunca yer yer oyulmalara ve yığılmalara sebebiyet verdiği, bunların sonucunda da taban topoğrafyasında zamana bağlı değişimlerin olduğu gözlemlenmektedir. Bu çalışmada İzmir Kâtip Çelebi Üniversitesi Hidrolik Laboratuvarında bulunan, simetrik iki yan kolun 90˚ açı ile ana kanala bağlandığı açık kanal kavşağı ü ...Daha fazlası
Polymers contain moisture due to their chemical structure. Moisture in polymers is important for the quality of the final product and ease of processing. For this reason, polymers are subjected to drying before processes such as injection and extrusion. Drying is carried out at temperatures and times specified by the polymer suppliers. Over-drying leads to increased viscosity (processing difficulty) while under-drying leads to flow marks, burrs, and reduced tensile strength and impact strength. Over-drying also causes excessive energy consumption. In this study, the drying process optimization ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.