Browsing by Author "2"
Now showing items 321-340 of 398
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Predicting the performance of pressure-swirl atomizers
Nural, Ozan Ekin; Ertunç, Özgür (Begell House Inc., 2018)The purpose of this study is to evaluate the semiempirical correlations that are found in the literature by comparing them with all of the applicable experimental data that are also taken from the literature. Presentation ... -
Pricing decisions in a strategic single retailer/dual suppliers setting under order size constraints
Ekici, Ali; Özener, Başak Altan; Özener, Okan Örsan (Informa Group, 2016)In this paper, we study a duopolistic market of suppliers competing for the business of a retailer. The retailer sets the order cycle and quantities from each supplier to minimize its annual costs. Different from other ... -
Privacy enforcement through policy extension
Arunkumar, S.; Srivatsa, M.; Soyluoglu, Berker; Şensoy, Murat; Cerutti, F. (IEEE, 2016)Successful coalition operations require contributions from the coalition partners which might have hidden goals and desiderata in addition to the shared coalition goals. Therefore, there is an inevitable risk-utility ... -
A profit-driven Artificial Neural Network (ANN) with applications to fraud detection and direct marketing
Zakaryazad, Ashkan; Duman, Ekrem (Elsevier, 2016-01-26)The rapid growth in data capture and computational power has led to an increasing focus on data-driven research. So far, most of the research is focused on predictive modeling using statistical optimization, while profit ... -
Pseudothermal light based quantum random number generator
Özel, H.; Dandaşi, Abdulrahman; Durak, Kadir (IEEE, 2020-10-22)The importance of quantum random number generators (QRNGs) is increasing day by day. An important aspect of any QRNG is the speed of the system. This paper introduces the theory behind a pseudothermal light based QRNG. ... -
Quickly starting media streams using QUIC
Arısu, Şevket; Beğen, Ali Cengiz (Association for Computing Machinery, Inc, 2018-06-12)Originally proposed by Google, QUIC is a low-latency transport protocol currently being developed and specified in the IETF. QUIC's low-latency, improved congestion control, multiplexing features are promising and may help ... -
Radiative energy and exergy analyses of spectrally-selective surfaces for CSP systems
Mohammed, Hayder Noori; Mengüç, Mustafa Pınar (Inderscience Enterprises Ltd., 2018)This work presents a new methodology for calculations of spectral radiative energy and radiative exergy to evaluate the performances of concentrated solar power (CSP) systems. Spectral radiative properties and the operating ... -
Rafinerilerdeki büyük veri problemlerine gerçek-zamanlı veri uzlaştırma çözümleri
Bakır, M.; Aydoğan, B.; Aydın, M.; Khodabakhsh, Athar; Arı, İsmail; Ercan, Ali Özer (IEEE, 2014)Rafineriler tonlarca ham petrolün, her gün faklı kimyasal işlemden geçirilerek benzine ve diğer yan ürünlere dönüştürüldüğü dev endüstriyel tesislerdir. Bu makalede sensör-tabanlı petrol rafinelerine özel endüstriyel büyük ... -
Ranking the predictive performances of value-at-risk estimation methods
Şener, Emrah; Baronyan, Sayat; Mengütürk, L. A. (Elsevier, 2012)We introduce a ranking model and a complementary predictive ability test statistic to investigate the forecasting performances of different Value at Risk (VaR) methods, without specifying a fixed benchmark method. The ... -
Rectangular slotted square patch antenna with a floating ring
Öztürk, Yasin Anıl; Sarı, Uğur; İmeci, Ş. T.; Durak, T. (IEEE, 2017)In this paper, a rectangular slotted square patch antenna with a floating ring and single point feed is presented. The proposed patch antenna, when optimized, achieved the highest gain of 7.17 dB at 7.12 GHz with -6.97 dB ... -
Referanssız görüntü bloklanma ölçümü için yeni bir yöntem
Ozansoy, Koray; Özer, N.; Dönmez, F.; Uğurdağ, Hasan Fatih (IEEE, 2014)Internet’te ve servis sağlayıcı ağlarında video trafiğinin tavan yaptığı günümüzde otomatik görüntü kalitesi ölçümünün faydaları aşikardır. Bu ölçümlerin birçok uygulamada gerçekzamanlı yapılması gerekir ve de bu “Referanssız” ... -
Rekabet avantajı kuramının tanımlanması ve ölçümlenmesi
Gençtürk, Esra; Kandemir, D.; Koç, Ö. T.; Demirci, Işıl Ceren (Marmara Üniversitesi, 2010)Üstün performans elde etmek için, rakiplere karşı sürdürülebilir avantajlara sahip olmak prensibi günümüz strateji düşüncesinin temelini oluşturmaktadır. Ancak, bu avantajların neler olması gerektiği konusunda sınırlı ve ... -
Relay-assisted OFDM-based visible light communications
Kızılırmak, R. Ç.; Narmanlıoğlu, Ömer; Uysal, Murat (IEEE, 2015-10)In this study, we investigate a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office ... -
Relay-assisted OFDM-based visible light communications over multipath channels
Narmanlıoğlu, Ömer; Kizilirmak, R. C.; Uysal, Murat (IEEE, 2015-07)In this paper, we investigate the performance of relay-assisted visible light communication (VLC) system over multipath channels. We consider an indoor environment where the ceiling light serves as the information source ... -
Resonance-filtering combo system for continuous wireless charging range coverage
Sağlam, Üstün; Tekin, Ahmet (Cambridge University Press, 2020-09)Distribution of wireless power charging field uniformly on a large area pad is critical for power receivers, particularly for wearable devices, wherein small form factor coils are involved. Since the receiver coil size is ... -
Resource allocation for visible light communication systems using simulated annealing based on a problem-specific neighbor function
Siddiqi, U. F.; Sait, S. M.; Demir, Muhammet Selim; Uysal, Murat (IEEE, 2019)In this paper, we consider a visible light communication (VLC) system with direct current-biased orthogonal frequency division multiplexing (DC-OFDM) and investigate resource allocation for a multi-user environment. Based ... -
A review of optical and radiative properties of nanoparticle suspensions: effects of particle stability, agglomeration, and sedimentation
Al-Gebory, Layth Wadhah Ismael; Mengüç, Mustafa Pınar (Begell House Inc., 2020)Nanoparticle suspensions (NPSs) are suspensions of nanosize particles in base fluids in the form of a solid-liquid mixture. They are used extensively in a wide range of industrial and engineering applications, and show ... -
Review of the main factors controlling the fracture toughness and impact strength properties of natural composites
Al-Maharma, Ahmad Yousef Mohammad; Şendur, Polat (IOP Publishing, 2019-02)The main critical factors, which have direct influence on the fracture toughness and imapct strength properties of natural fibers composites, are reviewed in details in this paper. Considering the vast body of literature ... -
RImCom: raster-order image compressor for embedded video applications
Palaz, Okan; Uğurdağ, Hasan Fatih; Ozkurt, O.; Kertmen, B.; Donmez, F. (Springer International Publishing, 2017)This paper presents a real-time, rate controlled, end-to-end (encoder and decoder) hardware solution for memory compression of raster-order video streams—named RImCom (short for Raster-order Image Compression). RImCom ... -
A robust optimization approach for production planning under exogenous planned lead times
Albey, Erinç; Yanıkoğlu, İhsan; Uzsoy, R. (IEEE, 2019)Many production planning models applied in semiconductor manufacturing represent lead times as fixed exogenous parameters. However, in reality, lead times must be treated as realizations of released lots' cycle times, which ...
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