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Bulunan: 42 Adet 0.001 sn
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Erişime Açık

The Impact Of Paris Agreement on Turkish Coal Power Project Developments

UYANIK, Sırrı | ALTÜRK, Orhan

EuraCoal, a European mining industry lobby group, estimates that Turkey has around 1.3 billion tonnes of hard coal and 11.5 billion tonnes of lignite resources, of which 0.5 billion tonnes and 9.8 billion tonnes respectively are proven reserves. As worldwide populations and industrial growth reach new heights, electricity demand is projected to increase substantially. Fossil fuels, particularly coal, will continue to be a vital energy source for the power sector in many countries. At the same time, fossil fuel fired power generation is one of the largest sources of global CO2 emissions. High-e ...Daha fazlası

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Import Dependency And Seeking For New Energy Technologies European Union Case

ÖZKAN NESİMİOĞLU, Şerife

In this paper, energy poverty and as a result of this energy import dependency and its possible negative results have been examined by taking European Union (EU) into consideration. This analysis has two aims: the first one is questioning the European Unions’ energy security from supply perspective and the second one is investigating the solutions produced by European Union to get away or at least to reduce its energy import dependency. To guarantee its energy supply security at affordable price and to attain its targets about energy security, some action plans has been being put into practice ...Daha fazlası

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Fuzzy Logic Control System with Helicopter Takeoff and Landing

ALLAHVERDİ, Novruz | HACIMURTAZAOĞLU, Murat

In this study, fuzzy expert system is designed for the provision of helicopter takeoffs and landings by fuzzy logic. For this purpose, a model helicopter and the test platform have been created that helicopter movements can be tested. The vertical motion control on the axis defined by the fuzzy logic control system is provided for the helicopter with the generated test platform with four degrees of freedom. Fuzzy logic controller was designed with Arduino 2560 control board and Visual Studio 2010 C Sharp program for controlling helicopter model and analysis of motion control was made. Real-tim ...Daha fazlası

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Bifilms And Hot Tearing Of Al-Si Alloys

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

Hot tearing is one of the most interesting defects that can be found during casting of aluminium alloys. The definition of this defects has some uncertainties such as “it does not always appear under apparently identical conditions” or “the defect is highly specific to certain alloys”. There are several works in the literature on the modelling and analytical approaches. However, the experimental findings have not been satisfactory. In this work, A356, A380 and A413 alloys were cast in two different moulds to investigate the hot tearing tendency with regard to the melt quality. It was found tha ...Daha fazlası

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Genotyping of Staphylococcus Aureus Strains Isolated From Bovine Mastitis in Turkey by Using ERIC-PCR Method.

ARSLAN, Emine | GÜLBAHÇE MUTLU, Elif

Mastitis is an intramammary infection that leads to important economic losses in dairy industry such as increasing the amount of waste milk by affecting the quality and quantity of the milk, removing cows from herd or sending them for slaughter early. Staphylococcus aureus has an important place in the fight against mastitis. In this study, it is aimed to genotyping of the 98 S. aureus isolates that were isolated from bovine mastitis by the polymerase chain reaction of enterobacterial repetitive intergenic consensus (ERIC-PCR). ERIC primers generated DNA products in sizes ranging between ~8000 ...Daha fazlası

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Effect Of Social Environment And Personality Traits On Entrepreneurship Tendencies Of Students

SELÇUK, Hamide | BURAK, Emel

Entrepreneurship is a concept that guides activities of opening application fields for different points of views and innovative approaches. Economic factors being the most important factor that affects the improvement of a society are related with accomplishing enterprising investments. Dealt with from this perspective, encouraging enterprising properties or individuals’ being in a social environment feeding enterprising ideas become most significant factor contributing economic growth as society and in terms of creative ideas’ of individuals use in real life and. Entrepreneurship is making th ...Daha fazlası

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A Hybrid Method for Rating Prediction Using Linked Data Features and Text Reviews

YUMUŞAK, Semih | MUÑOZ, Emir | MİNERVİNİ, Pasquale | DOĞDU, Erdoğan | KODAZ, Halife

This paper describes our entry for the Linked Data Mining Challenge 2016, which poses the problem of classifying music albums as 'good' or 'bad' by mining Linked Data. The original labels are assigned according to aggregated critic scores published by the Metacritic website. To this end, the challenge provides datasets that contain the DBpedia reference for music albums. Our approach benefits from Linked Data (LD) and free text to extract meaningful features that help distinguishing between these two classes of music albums. Thus, our features can be summarized as follows: (1) direct object LD ...Daha fazlası

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Power Aware Routing Protocols in Wireless Sensor Network

ALSULTAN, Mohammed | ÖZTOPRAK, Kasım | HASSANPOUR, Reza

Wireless Sensor Networks (WSNs) have gained importance with a rapid growth in their applications during the past decades. There has also been a rise in the need for energy-efficient and scalable routing along with the data aggregation protocols for the large scale deployments of sensor networks. The traditional routing algorithms suffer from drawbacks such as the presence of one hop long distance data transmissions, very large or very small clusters within a network at the same moment, over-accumulated energy consumption within the cluster-heads (CHs) etc. The lifetime of WSNs is also decrease ...Daha fazlası

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Structural Analysis of Industrial H-Type Hydraulic Press by Using Finite Element Method

SEZGEN, Haşmet Çağrı | TINKIR, Mustafa

In this study, structural analysis of an industrial 300 tons Htype hydraulic press is investigated for geometric optimization using finite element method. For this purpose, linear static analysis of press body parts is realized and maximum Von Misses stress locations, safety coefficients, maximum deformation results and required optimization locations are determined via ANSYS Workbench software. The obtained results are given in the form of the graphics.

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Study Gas Flow Heating In Micro-Nozzle Through Walls Instead Of Preheating

HAMEED, Amar Hasan

Previously, Preheating has been established in micro-nozzles to increase the specific impulse of thrusters and increase thrust level. However, heating may cause higher viscous losses in micro-nozzles working at low Reynolds numbers. In this work, heating is combined with gas expansion by using heated walls for convergent-divergent micro-nozzle. The flow in 2D micro-nozzle with heat generation inside the side-walls has been numerically simulated and analyzed. A wide range of low Reynolds numbers flow is tested to investigate the effect of flow parameters. A range of diverse amounts of heat flux ...Daha fazlası

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A Correlation Improvement Technique for Model Updating of Structures

ALTUNEL, Fatih | ÇELİK, Mehmet | ÇALIŞKAN, Mahmut

This study proposes a new correlation improvement technique for the optimum node removal location to get improved modal assurance criterion (MAC) matrix. The technique is applied to updating of the finite element model (FEM) of a structure. The developed routine is tried on a utility helicopter. It is proven that it is capable of showing better performance than the coordinate MAC (coMAC), commonly used in such analyses. Commercial software is utilized for the finite element analysis of the helicopter fuselage and tail. Experimental modal analyses are also performed for updating the model for t ...Daha fazlası

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The evaluation of imaginative discovery coming into existence during the production process of music and arhitecture on the basis of Pink Floyd

DEMİRKAN, Özlem | ATMACA, Merve

Music is liquid architecture; Architecture is frozen music. " (Goethe) In art and science, the process of production exists in two different ways. The first one is an action that can be measured, experimented and supported by technical and practical processes and gives precise results. The second one is also an action which is based on experiences and sourced from relations, meaning and context. The second one cannot be measured technically but it can be fictionalized intuitively. 1 However, in disciplines involving design such as architecture, it can be seen that these two production processe ...Daha fazlası

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