Publications with Fulltext
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14288/6
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Publication Open Access The Chalcolithic of Southeast Anatolia(Oxford University Press (OUP), 2012) Department of Archeology and History of Art; Özbal, Rana; Faculty Member; Department of Archeology and History of Art; Graduate School of Social Sciences and Humanities; 55583Publication Open Access A low-SWaP, low-Cost transceiver for physically secure UAV communication with visible light(Springer, 2020) Department of Electrical and Electronics Engineering; Ergen, Sinem Çöleri; Soner, Burak; Faculty Member; Department of Electrical and Electronics Engineering; College of Engineering; Graduate School of Sciences and Engineering; 7211; N/AUnmanned aerial vehicles (UAV) are expected to utilize optical wireless technologies alongside radio frequency technologies for reliable, secure and high bandwidth communications. While terrestrial and atmospheric laser-based solutions in the past have achieved physically secure communication with very complex beam tracking/pointing mechanisms with large and costly telescopes, such systems are neither suitable nor necessary for medium-range (<100 m) commercial UAV communications. With the proliferation of low-cost solid-state lighting equipment and visible band photodetectors, visible light communications (VLC) offer a low-size-weight-and-power (SWaP) and low-cost solution. This paper presents a novel low-SWaP and low-cost transceiver for physically secure VLC in medium-range commercial UAV applications. Full implementation details for a proof-of-concept prototype built completely with off-the-shelf components are also reported.Publication Open Access Generalized unitarity relation for linear scattering systems in one dimension(Springer, 2019) Department of Physics; Department of Mathematics; Mostafazadeh, Ali; Faculty Member; Department of Physics; Department of Mathematics; College of Sciences; 4231We derive a generalized unitarity relation for an arbitrary linear scattering system that may violate unitarity, time-reversal invariance, PT - symmetry, and transmission reciprocity.Publication Open Access Koyunun olmadığı yerde keçiye Abdurrahman Çelebi derler: Ankara Eyaleti’nde Tiftik Keçisi ekonomisinin zaman-uzamsal analiz denemesi (1889-1905)(Vehbi Koç Ankara Studies Research Center (VEKAM) / Vehbi Koç Ankara Araştırmaları Uygulama ve Araştırma Merkezi (VEKAM), 2018) Department of History; Çelik, Semih; Department of History; College of Social Sciences and HumanitiesPublication Open Access Termination of the vendetta of the Black Sea? Stable peace, energy security and Russian–Turkish relations(Routledge, 2013) Department of International Relations; Bayer, Reşat; Faculty Member; Department of International Relations; Graduate School of Social Sciences and Humanities; 51395Publication Open Access DNA repair by photolyases(Elsevier, 2019) Öztürk, Nuri; Department of Molecular Biology and Genetics; Department of Chemical and Biological Engineering; Kavaklı, İbrahim Halil; Gül, Şeref; Faculty Member; Department of Molecular Biology and Genetics; Department of Chemical and Biological Engineering; College of Sciences; Graduate School of Sciences and Engineering; 40319; N/APhotolyases belong to the cryptochrome/photolyase protein family (CPF) which perform different functions such as DNA repair, circadian photoreceptor, and transcriptional regulation. Photolyase is a flavoprotein that repairs UV-induced DNA damages of cyclobutane pyrimidine dimer (CPD) and pyrimidine-pyrimidone (6-4) photoproducts using blue-light as an energy source. This enzyme has two chromophores: flavin adenine dinucleotide (FAD) as a cofactor and a photoantenna such as methenyltetrahydrofolate (MTHF). The FAD is essential for catalysis of the DNA repair. The second chromophore absorbs photons from the blue light spectrum and transfers energy to FAD to increase the repair efficiency of the enzyme. Phylogenetic analysis in which amino acid sequences of several hundreds of CPF members are used suggests that they form more classes than we have considered so far. In this chapter, we discussed structure-functions and reaction mechanisms of different classes of photolyases.Publication Open Access Sheep go to heaven, (Angora) goats go to hell: a spatio-temporal analysis of Angora Goat economy in the Province of Ankara (1889-1905)(Vehbi Koç Ankara Studies Research Center (VEKAM) / Vehbi Koç Ankara Araştırmaları Uygulama ve Araştırma Merkezi (VEKAM), 2018) Department of History; Çelik, Semih; Department of History; College of Social Sciences and HumanitiesPublication Open Access Women in management in Turkey(Taylor _ Francis, 2016) Kabasakal, Hayat Engiyaoğlu; Karakaş, Fahri; Maden, Ceyda; Department of Psychology; Aycan, Zeynep; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; 5798Publication Open Access A preliminary attempt to construct a geospatial, multimodal Ottoman transport network for 1899(Koç University Press (KUP) / Koç Üniversitesi Yayınları (KÜY), 2021) Gerrits, Piet; Department of History; Kabadayı, Mustafa Erdem; Özkan, Osman; Koçak, Turgay; Faculty Member; Teaching Faculty; Department of History; College of Social Sciences and Humanities; 33267; N/A; N/APublication Open Access The changing waves of migration from the Balkans to Turkey: a historical account(Springer, 2015) Sert, Deniz; Department of International Relations; İçduygu, Ahmet; Faculty Member; Department of International Relations; Migration Research Program at Koç University (MIReKoç) / Göç Araştırmaları Uygulama ve Araştırma Merkezi (MIReKoç); College of Administrative Sciences and Economics; 207882Ahmet İçduygu and Deniz Sert tell the history of migration from the Balkans to Turkey from the end of the nineteenth century to the present. They relate this history to nation-building, but also to economic conditions and specific Turkish concerns, such as the perceived need for immigration to compensate for a declining population at that time. They also demonstrate that after 1990, ethnic migration decreased and irregular labour migration became more important.