Aksaray Üniversitesi Kurumsal Akademik Arşivi
DSpace@Aksaray, Aksaray Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Analyzing the efficiency of renewable energy sources in terms of electricity generation: The case of Turkey
(IGI Global, 2020) Arsu, Talip
Electricity generation, one of the renewable energy sources (RES), delivers a solution for various problems such as energy efficiency, energy supply security, reducing foreign dependency, and especially, environmental concerns. However, the solutions provided for these problems bring along the question of which RESs are produced more effectively. Therefore, in this research, RESs used for electricity generation in Turkey were analyzed by using generation data to show which one is more effective. Bi-objective multiple-criteria data envelopment analysis ( BiO-MCDEA ) method, a goal programming-based efficiency determination method, was used for the efficiency analysis conducted for five years between the years of 2014 and 2018. As a result of the analysis, geothermal energy came into prominence as the most effective RES for all of the years included in the solution. Geothermal energy was followed by biomass energy, wind energy, hydroelectric, and solar energy, respectively.
Investigating land surface temperature changes using landsat-5 data and real-time infrared thermometer measurements at Konya closed basin ın Turkey
(Murat Yakar, 219) Orhan, Osman; Dadaşer Çelik, Filiz; Ekercin, Semih
The main purpose of this paper is to investigate multi-temporal land surface temperature (LST) changes of Konya Closed Basin (KCB) in Turkey using remotely sensed data. KCB is located in the semi-arid central Anatolian region of Turkey and hosts many important wetland sites including Salt Lake. Six Landsat-5 TM images selected from the 1984-2011 period were used in the analysis. A real-time field work was performed during the overpass of Landsat-5 satellite on 21/08/2011 over Salt Lake to collect coordinated temperature measurements using a handheld GPS and thermal infrared thermometer. All satellite images were geometrically and radiometrically corrected to relate the image data with in-situ measurements. Thematic LST images were used to evaluate the conditions over the region between 1984 and 2011. The results show that real-time ground temperature and satellite remote sensing data were in good agreement with correlation coefficient (R2) values of 0.94. The remotely sensed and processed satellite images and resulting thematic indices maps show that dramatic land surface temperature changes occurred (about 2°C) in the KCB from 1984 to 2011. Analysis of climatic data supports this finding. Air temperatures and pan evaporation had significant upward trends from 1984 to 2011. Analysis conducted using both LST and climatic data prove that the basin has been experiencing drought in recent years. It is suggested that the use of water supplies, especially ground water should be controlled taking into account particularly summer drought impacts over the basin.
The green brand equity in terms of environment and sustainability
(Peter Lang AG, 2019) Uygun, Mutlu
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Cryptocurrency: Determining the correlation between Bitcoin cryptocurrency and gold prices
(Peter Lang AG, 2019) Bağcı, Haşim; Keskin Köylü, Meltem
Throughout history, gold was used in the place of money to become one of the primary instruments for payments. It was always included in the financial system and accepted in the world, thus it was used as a reserve and investment tool. With time, payment instruments became much more varied, with the developments in technology that affected financial markets. The driving force for the growth and development of the financial markets is the information technology. One of the most important inventions of the information technology is cryptocurrency. The most important cryptocurrency is bitcoin, which has an everlasting growth of trading volume and also is the ancestor of crypto/digital currencies. Bitcoin is a product of the blockchain technology and can be traded without any intermediaries. Bitcoin dates back to ten years and is a very popular investment tool in today's markets. In this study, the price relations between bitcoin and gold are determined. The dataset of this study is composed of monthly data during the years of 2010-2018. The aim of this study is to determine the existence of the relationship between bitcoin and gold prices, as well as its direction and volume. This determination is accomplished by a time-series analysis. As a result of this study, causality relations between the variables are determined, meaning that which variable affects which other, and in what direction.
