Faculty of Engineering

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Recent Submissions

Using chains of bottleneck transitions to decompose and solve reinforcement learning tasks with hidden states Aydın, Hüseyin; Çilden, Erkin; Polat, Faruk (2022-08-01) Reinforcement learning is known to underperform in large and ambiguous problem domains under partial observability. In such cases, a proper decomposition of the task can improve and accelerate the learning process. Even am...
High current density via direct electron transfer by hyperthermophilic archaeon, Geoglobus acetivorans, in microbial electrolysis cells operated at 80 °C Kaş, Aykut; Yılmazel, Yasemin Dilşad (2022-06-01) Utilization of hyperthermophilic electro-active microorganisms in microbial electrolysis cells (MECs) that are used for hydrogen production from organic wastes offers significant advantages, such as increased reaction rate...
Two-stage anaerobic digestion of ozonated sewage sludge predominantly took over by acetotrophic methanogens with increased biogas and methane production Akcakaya, Merve; Tuncay, Sera; İçgen, Bülent (2022-06-01) Ozonation of sewage sludge prior to single-stage anaerobic digestion (SAD) has been reported to increase biogas and/or methane production. However, no studies have evaluated the impact of ozone pre-treatment on two-stage a...
Comparative Life Cycle Assessment of Uranium Recovery from Brine Altay, Melike Benan; Kalıpçıoğlu, Ceyda; Kurt, Zöhre (2022-06-01) With the increase in world population and the associated increase in raw material, clean water and energy demands, seeking for innovative and sustainable methods to decrease human-made environmental footprint becomes a tas...
<p>Performance and validation of a radiation model coupled with a transient bubbling fluidized bed combustion model</p> Yaşar, Mehmet Soner; Selçuk, Nevin; Külah, Görkem (2022-06-01) None of the transient bubbling fluidized bed combustor (BFBC) models couples the solution of radiative transfer equation with the solution of conservation equations of other transport processes although thermal radiation i...
Automating Coordination Efforts for Reviewing Construction Contracts with Multilabel Text Classification Candas, Ali Bedii; Tokdemir, Onur Behzat (2022-06-01) Construction projects involve multiple company departments and disciplines. The departments follow certain rules in implementing a project, also referred to as requirements in a construction contract. Current administratio...
Properties and applications of boron nitride nanotubes Turhan, Emine Ayse; Pazarçeviren, Ahmet Engin; Evis, Zafer; Tezcaner, Ayşen (2022-06-01) Nanomaterials have received increasing attention due to their controllable physical and chemical properties and their improved performance over their bulk structures during the last years. Carbon nanostructures are one of ...
Does depth estimation help object detection? Cetinkaya, Bedrettin; Kalkan, Sinan; Akbaş, Emre (2022-06-01) Ground-truth depth, when combined with color data, helps improve object detection accuracy over baseline models that only use color. However, estimated depth does not always yield improvements. Many factors affect the perf...
Fatigue and static damage in curved woven fabric carbon fiber reinforced polymer laminates Tasdemir, Burcu; Çöker, Demirkan (2022-06-01) Failure mechanisms of curved cross-ply laminates under static and fatigue loading have been studied extensively, but the examination of fabric laminates which are the most commonly used ply type in curved supports in airpl...
Analysis of the Carbon Metabolism of Rhodopseudomonas palustris for Biohydrogen Production DOĞAN, EZGİ MELİS; Koku, Harun (2022-06-01)
Tensile mode fracture toughness experiments on andesite rock using disc and semi-disc bend geometries with varying loading spans Tutluoglu, Levent; Batan, Ceren; Aliha, M.R.M. (2022-06-01) Purpose of this research is to investigate the effect of loading span on mode I fracture toughness for tests conducted by three-point bend geometries. Mode I fracture toughness tests were conducted on Ankara Golbasi Andesi...
Potential and Prospects of Hydrokinetic Energy in Malaysia: A Review Maldar , Nauman Riyaz; Yee, Ng Chen; Patel, Mohammed Shihab; Oğuz, Elif (2022-05-01) Endlessly rising power demands coupled with the growing urge to tackle the effects of climate change has compelled governments worldwide to explore and utilize every possible clean energy option within their geographical v...
Use of Powdered Steel Slag in Cement-Bentonite Slurry Wall Construction Çokça, Erdal; Talefirouz, Davood (2022-05-01) This paper presents a comprehensive laboratory investigation into the workability, permeability and unconfined compressive strength of powdered-steel-slag, lime-amended cement-bentonite backfills using several series of mi...
Effectiveness of a novel polyaniline@Fe-ZSM-5 hybrid composite for Orange G dye removal from aqueous media: Experimental study and advanced statistical physics insights Imgharn, Abdelaziz; Anchoum, Lahoucine; Hsini, Abdelghani; Naciri, Yassine; Laabd, Mohamed; Mobarak, Mohamed; Aarab, Nouh; Bouzıanı, Asmae; Szunerits, Sabine; Boukherroub, Rabah; Lakhmiri, Rajae; Albourine, Abdallah (2022-05-01) A polyaniline@Fe-ZSM-5 composite was synthesized via an in situ interfacial polymerization procedure. The morphology, crystallinity, and structural features of the as-developed PANI@Fe-ZSM-5 composite were assessed using s...
Empowering Risk Communication: Use of Visualizations to Describe Project Risks Atasoy Özcan, Güzide; Ertaymaz, Ugurcan; Dikmen Toker, İrem; Birgönül, Mustafa Talat (2022-05-01) Risk information that is used during project risk identification and assessment should be communicated well to enable risk-informed decision making. This study aimed to use risk descriptors for risk contextualization and e...
Advanced workflow for multi-well tracer test analysis in a geothermal reservoir Bayer, Peter; AKIN, TAYLAN; Akın, Serhat (2022-05-01) Interpretation of tracer tests in geothermal reservoirs is carried out by fitting the measured data either with simplified two-dimensional (2-D) analytical solutions or with complex numerical models. Available analytical s...
An Effective Forest Fire Detection Framework Using Heterogeneous Wireless Multimedia Sensor Networks Kizilkaya, Burak; Ever, Enver; Yatbaz, Hakan Yekta; Yazıcı, Adnan (2022-05-01) With improvements in the area of Internet of Things (IoT), surveillance systems have recently become more accessible. At the same time, optimizing the energy requirements of smart sensors, especially for data transmission,...
Effectiveness of microplastics removal in wastewater treatment plants: A critical analysis of wastewater treatment processes Kurt, Zöhre; Clayton, Panamá; James, Arthur (2022-05-01) Microplastics (MPs) are among the contaminants that have been of considerable concern in the last decade. One of the most significant contributors to MPs pollution in the environment is the effluent from wastewater t...
Seismic performance evaluation of eccentrically braced frames with long links using FEMA P695 methodology Balıkçı, Elif Müge; Al-Janabi, Musab Aied Qissab; Topkaya, Cem (2022-05-01) © 2022 Elsevier LtdShort links that primarily yield under shear are usually preferred in eccentrically braced frames (EBFs) due to their high rotation and energy dissipation capacities. Long links that yield under flexure ...
Lateral squeezing effects on cement-slag-bentonite slurry wall performance Çokça, Erdal; Talefirouz, Davood (2022-05-01) Cement-slag-bentonite slurry walls are self-hardening structures, and they are mainly used to retard contamination transport into the groundwater stream. Whilst permeability of a mixture is an initial criterion in slurry w...

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