Filtreler
Filtreler
Bulunan: 29 Adet 0.001 sn
Tam Metin [1]
Yayın Tarihi [1]
Yayın Dili [1]
Erişime Açık

Automatic Detection of Alzheimer’s Disease with Transfer Learning and Image Processing Techniques

Atılay Yeşilada

Alzheimer's disease continues to be a serious public health issue. Alzheimer's disease affects generally old people, and it is a neurological disorder. The most significant sign of Alzheimer's disease is memory loss, which becomes worse over time. Therefore, early identification of Alzheimer's illness can aid in diseased getting the proper care. One of the aims of this thesis is to automate the early detection of Alzheimer's disease and create a self-improving system by utilising previous experiences each time it is detected automatically. In this way, the bad effects of the disease due to the ...Daha fazlası

Erişime Açık

Surface Roughness Performance Related to the Direction in Composite Structures Produced by the Fused Filament Fabrication Method and Improve to Surface Roughness

Özlem DOĞRU

Additive manufacturing is used today in different industries to produce prototypes and even final products. Additive manufacturing offers solutions for the fabrication of complex geometries and is preferred for manufacturing parts in a wide variety of applications. The fused filament fabrication (FFF) method is the additive manufacturing method with the most users worldwide. With the developing material science, it has been possible to produce composite structures and even metal products by going beyond the production of pure polymers in the FFF method. The mechanical properties of the materia ...Daha fazlası

Erişime Açık

Aging Heat Treatment of Additive Manufacturing Maraging Steels in Nitrogen Containing Atmospheres

Derya Çakan

Additive Manufacturing (AM) is a manufacturing method that pushes the limits of imagination and eliminates the question of whether complex industrial products can be produced that cannot be obtained with traditional manufacturing methods. In this study, microstructure and mechanical properties of maraging steels produced by DMLS method and aged in different durations (6 and 9 hours) and atmospheres (Air, N2 and N2/H2) were investigated. When the SEM images were examined, it was ob-served that the molten pool boundaries did not disappear completely but became blur-red with increasing temperatur ...Daha fazlası

Erişime Açık

Development of Electromagnetic Wave Absorption Properties of Graphene-Based Nanocomposites by Using Stochastic Optimization Methods

Kemal Bartu Aydın

Today, with the developing telecommunications and electronic technologies for civilian and military purposes, electromagnetic (EM) applications have a wide usage area, including different frequency ranges, such as radar, wireless information transfer, and medical technologies, as well as radio frequencies. However, the broad use of these technologies causes EM wave pollution, so they have a devastating effect not only on the working functionalities of electronic devices but also on human health. Therefore, the need to develop these technologies to prevent EM wave pollution is increasing daily. ...Daha fazlası

Erişime Açık

Enhanced Anti-Cancer Photodynamic Activity with Photobiomodulation Therapy at Different Wavelengths

Büşra Sirek

Photodynamic therapy (PDT) is a non-invasive therapy that induces photochemical reactions for treating many diseases including cancer using the advantages of light. It is based on the interaction of light at a specific wavelength and light-sensitive chemical which does not have dark toxicity. Thus, PDT is an anticancer therapeutic modality yielding cancer cell death. As with other anticancer therapies, some drawbacks reduce or limit the efficacy of PDT. To eliminate the disadvantages resulting in increased efficacy of PDT, it is combined with other anticancer treatment methods. Together use of ...Daha fazlası

Erişime Açık

Dynamics of Axisymmetric Drops Impacting onto Heterogeneous Surfaces

Atalay SEÇER

The way a droplet behaves when it lands on a surface depends on the characteristics of the surface and the flow conditions of the droplet. It can deposit, rebound, splash, etc. There is delimited research on how surface roughness and chemical composition affect the deformation of droplets upon impact, in comparison to the studies done on smooth surfaces. Our model uses two-phase flow to simulate the axisymmetric motion of droplets over surfaces with heterogeneities by combining the Navier-Stokes equations for motion with the Cahn-Hilliard equation for tracking the phase-field. We integrate the ...Daha fazlası

Erişime Açık

Controlling the Motion of Capillary Driven Interfaces in Channels with Chemical Heterogeneity

Mehmet Alptuğ Boylu

The use of self-driven fluids (e.g., droplets, capillary flows) attracts many researchers as the external driving mechanisms are diminished or eliminated. The contact angle hysteresis generates a driving force (a pressure difference across interfaces). This pressure depends on the interaction with the solid substrates and is controlled if one varies the surface energy of the walls. Self-transport and manipulation of interfaces play an important role in the development of microfluidic devices, self-cleaning, water harvesting and heat transfer enhancement. In this study, we search for the effect ...Daha fazlası

Erişime Açık

Experimental Investigation and Numerical Modeling of Fiber Reinforced Concrete Beams for Different Failure Modes

Marwan AL SAMAN

Bu çalışma temel olarak, Beton Plastikleşme Hasar modelinin (ing. Concrete Damaged Plasticity CDP) ve Değiştirilmiş Basınç Alanları Teorisi (ing. Modified Compression Field Theory, MCFT) formülasyonlarının doğrusal olmayan sonlu elemanlar yöntemine uygulanmasının etkinliğini değerlendirmeyi amaçlamaktadır. Farklı boyutlar, kullanılan çelik lif miktarı, beton dayanımı ve çekme donatısı oranı gibi geniş ölçekli değişkenleri kapsayan iki kiriş grubu üzerinde incelemeler gerçekleştirilmiştir. Birinci grup kirişler literatürden alınmış, ikinci grup kirişler ise İzmir Katip Çelebi Üniversites ...Daha fazlası

Erişime Açık

Effect of Coating Material on High Temperature Oxidation of Inconel 738LC Superalloy

Simge AVCI

Inconel 738LC alaşımı nikel bazlı bir süperalaşımdır ve genellikle gaz türbinlerinde, türbin nozullerinde ve türbin bıçaklarında kullanılmaktadır. Gaz türbin motoru bileşenlerinde kullanımı yaygın olan Inconel 738LC çalışma ortam koşulları sebebi ile yüksek sıcaklık ile birlikte yüksek korozyona da maruz kalmaktadır. Bu sebeple, bu malzemenin yüksek sıcaklık mukavemet değeri ve yüksek sıcaklık oksidasyon direnci büyük önem taşımaktadır. Bu çalışmada karbon elementinin Inconel 738 alaşımında mekanik ve mikroyapısal etkileri incelenmiştir. Oda sıcaklığında ve iki farklı yüksek sıcaklıktak ...Daha fazlası

Erişime Açık

Design of a Microcontroller-Based Coupled Tank System and Implementation of Level Control with Feedback Linearization Method

Bahadır Yeşil

Bu tezde, ARM Cortex M7 mikrodenetleyici birimi (MCU) tabanlı gömülü Birleşik Tank Sistemi (CTS) tasarlanmış ve bulanık mantık denetleyici (FLC), geri beslemeli doğrusallaştırma (FL) tabanlı oransal integral türevsel (PID) denetleyici ve FL tabanlı FLC kullanılarak sıvı seviyesi kontrol algoritmaları uygulanmıştır. Seçilen denetleyicilerin amacı, tasarlanan CTS'nin ikinci tankındaki önceden tanımlanmış su seviyesini doğru bir şekilde izlemek ve denetleyicilerin performanslarını birbirleriyle karşılaştırmaktır. Geri beslemeli doğrusallaştırılmış CTS modelini oluşturmak için gerekli olan ...Daha fazlası

Erişime Açık

Artificial Intelligent Based Segmentation on Medical Imaging

Mahmut AĞRALI

Teknolojinin ve teorik bilginin gelişmesiyle son 20 yıldır günlük hayatımızın her alanında olduğu gibi sağlık alanında da yapay zekâ (YZ)'nın uygulanması giderek artmaktadır. Özellikle koronavirüs (COVID-19) ve iskemik inme gibi toplum sağlığını tehdit eden hastalıkların YZ ile tespit edilmesi sağlık çalışanların iş yüklerini hafifleterek daha doğru tanı sağlamaktadır. Bu hastalıkların tespit edilmesinin yanında medikal görüntü üzerinden hastalık bölgelerinin bölütlenmesi, sağlık çalışanlarına tedavide yardımcı olabilecek bilgi sağlamaktadır. Bununla birlikte medikal görüntü üzerinden b ...Daha fazlası

Erişime Açık

Comparison of the Methods Used in Acquisition of Private Property in the Scope of Public Interest

Tolga Kahyaoğlu

Public institutions need movable and immovable property, resource and altitude rights in order to perform their duties and services imposed on them by the constitution and laws. It is possible for public institutions to obtain these needs by renting or purchasing them by making a contract like all other real and legal legal persons. However, if the person who owns the properties or rights required by the Public Institutions does not want to make a contract, or if the price cannot be agreed upon, it will lead to the disruption or non-fulfillment of the duties and services required to be f ...Daha fazlası

6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.

creativecommons
Bu site altında yer alan tüm kaynaklar Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.
Platforms