Results 51 to 60 of about 1,408 (184)

The Effect of Renewable and Fossil Fuel Energy Consumption on Total Factor Productivity in G20 Countries

Ekonomi, Politika & Finans Araştırmaları Dergisi, 2021
The aim of this study is to examine the effect of both renewable and fossil fuel energy consumption on total factor productivity in G20 countries by using fixed effects with Driscoll and Kraay standard errors approach.
Buket Altınöz
doaj   +1 more source

Effectiveness of conceptual change strategies in science education: A meta‐analysis

Journal of Research in Science Teaching, Volume 61, Issue 6, Page 1263-1325, August 2024.
Abstract There is extensive literature focusing on students' misconceptions in various subject domains. Several conceptual change approaches have been trying to understand how conceptual change occurs to help learners handle these misconceptions. This meta‐analysis aims to integrate studies investigating the effectiveness of three types of conceptual ...
Cagatay Pacaci, Ulas Ustun, Omer Faruk Ozdemir   +2 more
wiley   +1 more source

Microbialites on the northern shelf of Lake Van, eastern Türkiye#: Morphology, texture, stable isotope geochemistry and age

Sedimentology, Volume 71, Issue 3, Page 850-870, April 2024.
ABSTRACT Lake Van, the world's largest alkaline lake, hosts some of the largest microbialite towers worldwide, which are considered as modern analogues of ancient stromatolites. This study investigates the links between microbialite evolution, geology, climate and hydrology, and the role of biotic and abiotic processes in microbialite growth and ...
M. Namık Çağatay, Emre Damcı, Germain Bayon, Mustafa Sarı   +3 more
wiley   +1 more source

Time Series Prediction of Solar Power Generation Using Trend Decomposition

Energy Technology, Volume 12, Issue 2, February 2024.
High‐accuracy predictions of future solar power generations are important for monitoring, maintenance, dispatching, and scheduling. The goal of this study is to create a forecasting workflow that increases prediction accuracy independent of the machine learning method and has minimal computational requirements.
Gurcan Kavakci, Begum Cicekdag, Seyda Ertekin   +2 more
wiley   +1 more source

Akıllı Sayaç Verilerinde Derin Zaman Serisi Analizi ve Olasılık Tabanlı Kümeleme ile Enerji Tüketicisi Esneklik Tespiti

Gazi Üniversitesi Fen Bilimleri Dergisi
Yüksek çözünürlüklü akıllı sayaç verileri, elektrik tüketicilerinin zamana bağlı davranış örüntülerini ortaya koyarak talep tarafı esnekliği analizinde önemli bir veri kaynağı sunmaktadır.
Zühre Aydın
doaj   +1 more source

Investigating electromagnetic forces in multi-winding transformers: A numerical analysis

Results in Engineering
This paper presents a numerical study on the impact of multi-winding configurations on radial and axial electromagnetic forces in multi-winding transformers under three different conditions. Finite element analysis (FEA) models are used to simulate three
Kamran Dawood
doaj   +1 more source

ENERJİ SORUNU, ÇEVRE VE ALTERNATİF ENERJİ KAYNAKLARI

Selçuk Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, 2008
Enerji ihtiyacınıkarşılamada yenilenemeyen enerjiler ve yenilenebilir enerjiler olmak üzere iki çeşit kaynak kullanılmaktadır. Fosil yakıtlar olarak da adlandırılan yenilenemeyen kaynaklar, ciddi ve tehlikeli boyutlarda çevre sorunlarına neden olmaktadırlar. Ayrıca bu kaynakların rezervleri sınırlımiktardadır ve bir gün tükeneceklerdir.
ÇUKURÇAYIR, M. Akif, SAĞIR, Hayriye
openaire   +3 more sources

Leakage reactance variation in dry-type transformers due to spacer positioning: A FEM and experimental study

Engineering Science and Technology, an International Journal
Leakage reactance is a fundamental electrical parameter in transformers that directly affects voltage regulation, efficiency, and short-circuit performance.
Kamran Dawood
doaj   +1 more source

Analysis of Leakage Impedance Variations Due to Cross-Sectional Area Changes in High Voltage Sections

IEEE Access
Transformers are crucial devices in electrical power systems, playing a key role in voltage regulation, power transmission, and distribution. Leakage impedance is one of the main factors influencing the transformer’s performance. Leakage impedance
Kamran Dawood, Semih Tursun, Guven Komurgoz   +2 more
doaj   +1 more source

Alüminyum 7075 Matrisli Kompozitlerde SiC, B4C Ve TiB2 Takviye Elemanlarının Mekanik Özelliklere Etkilerinin Karşılaştırılması

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2019
Bu çalışmada toz metalurjisi yöntemi kullanılarak Al 7075 matris malzemesi içerisine SiC, B4C ve TiB2 takviyeelemanları ayrı ayrı ilave edilmiştir. SiC, B4C ve TiB2 takviye ağırlık oranları %5, %10 ve %20 olarakuygulanmıştır.
Muharrem Pul
doaj   +1 more source