Now showing items 41-60 of 14888

    • 2D material liquid crystals for optoelectronics and photonics 

      Hogan, Ben T.; Kovalska, Evgeniya; Craciun, Monica F.; Baldycheva, Anna (Royal Society of Chemistry, 2017)
      The merging of the materials science paradigms of liquid crystals and 2D materials promises superb new opportunities for the advancement of the fields of optoelectronics and photonics. In this review, we summarise the ...
    • 2D vibrational properties of epitaxial silicene on Ag(111) 

      Solonenko, D.; Gordan, O. D.; Lay, G. L.; Sahin, H.; Cahangirov, S.; Zahn, D. R. T.; Vogt, P. (IOP Publishing, 2016-10)
      The two-dimensional silicon allotrope, silicene, could spur the development of new and original concepts in Si-based nanotechnology. Up to now silicene can only be epitaxially synthesized on a supporting substrate such as ...
    • 3 boyutlu kartezyen olmayan paralel görüntülemede değişken görüntü alanına dayalı geriçatım 

      Şenel, Celal Furkan; Çukur, Tolga (IEEE, 2018)
      MRG’de yaygın olarak kullanılan geriçatım yöntemleri değişken yoğunluklu Kartezyen olmayan taramalara da uygulanabilmektedir; fakat bu durumda bu yöntemlerin genellikle yüksek hesaplama karmaşıklığı içeren çok ...
    • 3-Boyutlu orman yangını yayılımı sistemi 

      Köse, Kıvanç; Yılmaz, E.; Grammalidis, N.; Aktuğ, B.; Çetin, A. Enis; Aydın, İ. (IEEE, 2008)
      In the last few years, due to the global warming and draught related to it, there is an increase in the number of forest fires. Forest fire detection is mainly done by people but there exists some automated systems in this ...
    • 3-D motion estimation and wireframe adaptation including photometric effects for model-based coding of facial image sequences 

      Bozdağı, G.; Tekalp, A. M.; Onural, L. (IEEE, 1994-06)
      We propose a novel formulation where 3-D global and local motion estimation and the adaptation of a generic wireframe model to a particular speaker are considered simultaneously within an optical flow based framework ...
    • 3-D motion estimation of rigid objects for video coding applications using an improved iterative version of the E-matrix method 

      Alatan, A. A.; Onural, L. (Institute of Electrical and Electronics Engineers, 1998-02)
      As an alternative to current two-dimensional (2-D) motion models, a robust three-dimensional (3-D) motion estimation method is proposed to be utilized in object-based video coding applications. Since the popular E-matrix ...
    • 3-dimensional median filters for image sequence processing 

      Alp, M. Bilge,; Neuvo, Y. (IEEE, 1991-04)
      Two 3-D median-based filtering algorithms have been developed that preserve the motion in the image sequence while attenuating noise effectively. Some observations are made on the root signals in binary domain based on the ...
    • ∼3-nm ZnO nanoislands deposition and application in charge trapping memory grown by single ALD step 

      El-Atab, N.; Chowdhury F.; Ulusoy, T. G.; Ghobadi, A.; Nazirzadeh A.; Okyay, Ali Kemal; Nayfeh, A. (Nature Publishing Group, 2016)
      Low-dimensional semiconductor nanostructures are of great interest in high performance electronic and photonic devices. ZnO is considered to be a multifunctional material due to its unique properties with potential in ...
    • 3-Propionyl-thiazolidine-4-carboxylic acid ethyl esters: A family of antiproliferative thiazolidines 

      Önen-Bayram F.E.; Buran, K.; Durmaz I.; Berk, B.; Cetin-Atalay, R. (Royal Society of Chemistry, 2015)
      Cancer results from unregulated cell growth. Reactivating the process of the programmed cell death, i.e. apoptosis, is a classical anticancer therapeutic strategy. The apoptosis-inducing property of the (2RS,4R)-2-phenyl ...
    • 3. yılında Türkiye'nin internetle savaşı: Donkişot, Devekuşu,Harakiri 

      Akgül, Mustafa (Türk Kütüphaneciler Derneği, 2010)
      Türkiye'de İnternet yasaklarını düzenleyen 5651 numaralı kanun çıkalı 3 yılı aştı. Bu kanunun çıkış sürecinde ve bugüne kadar uygulamasında, ülkemiz bir yandan dünyaya önderlik etmeye çalıştı, bir yandan Youtube/ Google ...
    • 3.5-GHz Intra-Burst Repetition Rate Ultrafast Yb-Doped Fiber Laser 

      Kerse, C.; Kalaycioʇlu, H.; Elahi, P.; Akçaalan, Ö.; Ilday, F. Ö. (Elsevier, 2016)
      We report on an all-fiber Yb laser amplifier system with an intra-burst repetition rate of 3.5 GHz. The system is able to produce minimum of 15-ns long bursts containing approximately 50 pulses with a total energy of 215μJ ...
    • 3.5-W, 42-MHz, single-mode chirped pulse amplification fiber laser system at 1560 nm 

      Elahi, Parviz; Li, Huihui; İlday, Fatih Ömer (OSA, 2017)
      There is much interest in the development of high power ultra-short fiber laser systems due to their significant properties and applications. Among them, Er-doped fiber lasers are showing more attention, especially in ...
    • 3.5-W, femtosecond chirped pulse amplification fiber laser system at 1560 nm 

      Elahi, Parviz; Li, Huihui; İlday, Fatih Ömer (IEEE, 2017)
      We report a single-mode, 42 MHz, 3.5-W average power chirped pulse amplification fiber laser system operating at 1560 nm. The laser system comprises a dispersion-managed mode-locked oscillator and twoamplifier stages. The ...
    • 30-fs 1.6 mJ pulses at a kHz repetition rate from a single stage DPSS Yb amplifier 

      Andriukaitis, G.; Kartashov, D.; Pugzlys, A.; Lorenc, D.; Baltuska, A.; Giniunas, L.; Danielius, R.; İlday, Ömer Fatih (OSA, 2010)
      200-fs 2.5-mJ pulses from a cw-diode-pumped Yb:CaF2 MOPA are spectrally broadened in Ar and recompressed to 30 fs at 980 nm using a prism pair. Multi-millijoule 12-fs pulses are feasible upon higher-order spectral phase ...
    • 33-fs Yb-fiber laser comb locked to Cs-atomic clock 

      Şenel, Çağrı; Hamid, R.; Erdoğan, C.; Çelik, M.; Kara, O.; İlday, Fatih Ömer (IEEE, 2013)
      Despite the prevalence of fiber frequency combs around 1.5 μm, few fully stabilized frequency combs have been demonstrated around 1.0 μm, despite the generally superior performance of Yb-fiber lasers compared to Er-fiber ...
    • A 3D dynamic model of a spherical wheeled self-balancing robot 

      İnal, Ali Nail; Morgül, Ömer; Saranlı, Uluç (2012)
      Mobility through balancing on spherical wheels has recently received some attention in the robotics literature. Unlike traditional wheeled platforms, the operation of such platforms depends heavily on understanding and ...
    • 3D electron density estimation in the ionosphere 

      Tuna, Hakan; Arıkan, Orhan; Arıkan, F. (IEEE, 2014)
      Ionosphere has ion distribution which is variable in space and time. There have been physical and empirical studies for modeling the ionosphere. International Reference Ionosphere extended to Plasmasphere (IRI-Plas) is the ...
    • 3D Force field spectroscopy 

      Baykara, Mehmet Z.; Schwarz, U. D. (Springer, Cham, 2015)
      With recent advances in instrumentation and experimental methodology, noncontact atomic force microscopy is now being frequently used to measure the atomic-scale interactions acting between a sharp probe tip and surfaces ...
    • 3D forest fire propagation simulation 

      Köse, Kıvanç; Grammalidis, N.; Yılmaz, E.; Çetin, A. Enis (IEEE, 2008-05)
      The increase in the number of forest fires in the last few years dispatch governments to take precautions. Besides prevention, early intervention is also very important in fire fighting. If the firefighters know where the ...
    • A 3D game theoretical framework for the evaluation of unmanned aircraft systems airspace integration concepts 

      Albaba, Berat Mert; Musavi, Negin; Yıldız, Yıldıray (Elsevier, 2021-10-23)
      Predicting the outcomes of integrating Unmanned Aerial System (UAS) into the National Airspace System (NAS) is a complex problem, which is required to be addressed by simulation studies before allowing the routine access ...