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Öğe Avro-Amerikan hegemonyası ve “Avrupalı bir yönetmen” olarak Lars von Trier(Uluslararası Kıbrıs Üniversitesi, 2017) Köksal, Selma; Denli, ÖzlemDanimarkalı film yönetmeni Trier’in filmografisi, hem konuları açısından, hem de artistik eğilimleri ile bize Avrupa Kültürü ve düşüncesi üzerine oldukça önemli veriler sunmakta, dünyamızın içinde bulunduğu düşünsel, kültürel, siyasi bunalım ve çıkmazlara, bir yanıyla modernlik eleştirisi de sayılabilecek, bir yorumla yaklaşmaktadır. Bu yazıdaki amacımız, Trier düşüncesinde ‘Avro-Amerikan’ kavramı olarak adlandırdığımız bu temanın izini sürmek; film kuramı ve siyaset bilimi disiplinlerinin bakış açısından analiz etmektir. Trier’in genelde Batı, özelde ise ‘Avro-Amerika’ uygarlığına yaklaşımının tartışılması bu yazının genel çerçevesini oluşturmaktadır. İncelediğimiz filmlerin altmetinleri olarak işaret ettiğimiz kolektif suç, kefaret ve insan doğası kavramları Trier’in ‘siyasal klostrofobi’sine işaret etmektedir. Yönetmen, tarihi daima geri dönen bir şiddet ve çöküş hikâyesi, insanı da yok olmaya mahkûm ve layık bir varlık olarak tasvir eder. Söz konusu temaların Trier sinemasının biçimsel unsurlarıyla ilişkisinin incelenmesi de yazının amaçları arasında yer almaktadır.Öğe Coefficient bounds for a new subclass of analytic bi-close-to-convex functions by making use of Faber polynomial expansion(TÜBİTAK, 2017-07-25) Sakar, Fethiye Müge; Güney, Hatun ÖzlemRecently, in the literature, we can see quite a few papers about general coefficient bounds for subclasses of bi-univalent functions. However, we can find just a few papers about general coefficient estimates for subclasses of bi-close-to-convex functions. In the present study, we give and look into a new subclass of analytic and bi-close-to-convex functions in the open unit disk. Making use of the Faber series, we have an upper bound for the general coefficient of functions in this class. We also demonstrate the invisible behavior of the beginning coefficients of a special subclass of bi-close-to-convex functions.Öğe Al-Makrizi’s Khitat and the markets in Cairo during the Mamluks era(Türk Tarih Kurumu, 2017-08) Ağır, Abdullah MesutThis study examines the markets in Cairo during the reign of the Mamlūks in the light of al-Makrīzī’s Chronicle al-Khitat. Besides those which were built during the Mamlūks era the commercial life were ongoing at the markets dating back to the Fatimids and the Ayyubids periods. The marketplaces generally occupied in al-Qasaba which was between Bāb al-Futūh in the north and Bāb al-Zuwayla in the south was the trading center of the city. Al-Qasaba is al-Mu’izz Street today which takes its name from the Fatimid Caliph al-Mu’izz li-Dinillah (341-364/953-975). The economic and social decline especially seen during the second half of the Mamlūks in the 15th century af-fected also the domestic markets stability and most of the sûqs disappeared depending on these conditions.Öğe Combustion, performance, and emissions of safflower biodiesel with dimethyl ether addition in a power generator diesel engine(Taylor & Francis, 2020-04-29) Aydın, Hüseyin; Işık, Mehmet Zerrakki; İşcan, Bahattin; Topkaya, HüsnaIn this study, the effect of dimethyl ether (DME) addition to diesel (ultralow sulfur diesel fuel) and biodiesel fuels on the combustion, performance, and emissions of a diesel-powered generator was investigated. For this purpose, fuel samples of the ternary blend that volumetrically composed of 10% safflower biodiesel–10% dimethyl ether–80% ultralow sulfur diesel fuel (B10DME10), the ternary blend that volumetrically composed of 25% safflower biodiesel–25% dimethyl ether–50% ultralow sulfur diesel fuel (B25DME25), the binary blend that volumetrically composed of 25% safflower biodiesel–75% ultralow sulfur diesel fuel (B10DME10) B25, and pure safflower oil biodiesel (B100) and standard ultralow sulfur diesel (D2) were prepared. The test engine was loaded by power drawing from the generator by the usage of equivalent powered electrical heating resistances. Generally, using DME with biodiesel improved the combustion properties of biodiesel blends that can be attributed to the lower viscosity of DME. The maximum cylinder pressure was obtained for B10DME10 in general and sometimes for B25DME25. When test fuels are compared, DME blends showed higher and earlier peaks of heat release compared to diesel and biodiesel blend fuels especially. It was found that combustion is more efficient from mass fuel consumption (MFC) and brake specific fuel consumption (BSFC) values in the use of DME than biodiesel. BSEC values of using DME in the blends considerably decreased that it is the proof of improved combustion and energy efficiency. The highest average efficiency values were obtained for B25DME25 as 28.3% although it has a lower calorific value than D2 due to the considerably improved combustion properties of DME, while the average efficiency values were 23.1%, 23.3%, and 20.7% for D2, B25, and B100 fuels, respectively. Highest carbon monoxide (CO) emissions were obtained in the use of pure biodiesel, while the lowest CO emissions were obtained in the use of DME. The addition of DME is seen to increase the nitrogen oxides (NOx) and CO emissions.
