Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Conference Object Citation - Scopus: 2Enhancing Multiview 3d Reconstruction Using Polarization Imaging(IEEE Computer Society, 2014) Ozan, S.; Gumustekin, S.Performance of stereo imaging methods, which are used to find depth information of a scene, can be adversely affected by surface reflection properties of subjects in the scene and possible change in relative camera and light source positions. In this study a catadioptric multiview imaging system, which is constructed by using planar mirrors, is proposed. Stereo matching problems which are caused by the specular reflections in the scene are highlighted and it is shown that those problems can be significantly alleviated by using polarization images. © 2014 IEEE.Conference Object A News Chain Evaluation Methodology Along With a Lattice-Based Approach for News Chain Construction(Association for Computational Linguistics (ACL), 2017) Toprak, Mustafa; Özkahraman,Ö.; Tekir, SelmaChain construction is an important requirement for understanding news and establishing the context. A news chain can be defined as a coherent set of articles that explains an event or a story. There's a lack of well-established methods in this area. In this work, we propose a methodology to evaluate the "goodness" of a given news chain and implement a concept latticebased news chain construction method by Hossain et al. The methodology part is vital as it directly affects the growth of research in this area. Our proposed methodology consists of collected news chains from different studies and two "goodness" metrics, minedge and dispersion coefficient respectively. We assess the utility of the lattice-based news chain construction method by our proposed methodology. © EMNLP 2017.All right reserved.Book Part Citation - Scopus: 10Catalog and Illustrative Examples of Lightweight Cryptographic Primitives(Springer International Publishing, 2021) Mileva,A.; Dimitrova,V.; Kara,O.; Mihaljević,M.J.The main objective of this chapter is to offer to practitioners, researchers and all interested parties a brief categorized catalog of existing lightweight symmetric primitives with their main cryptographic features, ultimate hardware performance, and existing security analysis, so they can easily compare the ciphers or choose some of them according to their needs. Certain security evaluation issues have been addressed as well. In particular, the reason behind why modern lightweight block cipher designs have in the last decade overwhelmingly dominated stream cipher design is analyzed in terms of security against tradeoff attacks. It turns out that it is possible to design stream ciphers having much smaller internal states. © The Editor(s) (if applicable) and The Author(s) 2021.Book Part Telemedicine Applications for Pandemic Diseases, With a Focus on Covid-19(Elsevier, 2021) Tarim,E.A.; Karakuzu,B.; Oksuz,C.; Tekin,H.C.Dating back to the development of modern medicine, pandemic and epidemic diseases, such as bubonic plague, smallpox, the plague of Justinian, and the Antonine Plague, have caused massive damage to the human race. For instance, more than 200 million people are estimated to have died due to Black Death (bubonic plague) alone. This situation has not changed in near history either. Diseases such as influenza, HIV/AIDS, severe acute respiratory syndrome, Ebola, Middle East respiratory syndrome, and coronavirus disease 2019 (COVID-19), as today, have emerged and threatened the modern human life. The common feature of these diseases can be listed as having a high risk of infection and transmission, rapidly spreading to large areas, and having high mortality rates and causing permanent damage to the body because of the low immunity profile of the exposed population. If the number of cases increases rapidly for these diseases, the capacity of healthcare services can be exceeded and healthcare services can be threatened as well. These characteristics of pandemic diseases force the authorities to take extraordinary precautions such as isolation and quarantine to reduce the risk of infection. However, these applications can make it difficult to provide proper health services to patients. The development of information technologies provides patients an easy and remote access to healthcare services via telemedicine applications. Telemedicine is used for diagnosis and treatment of diseases by following the same practices used in clinics. It also provides care givers a real-time and remote monitoring of their patients, which can be beneficial in terms of reducing the risk of infections and maintaining healthcare services during a pandemic. Authorities can also use these telemedicine applications to track infected patients and get necessary precaution to minimize the infection risk. This chapter introduces the latest telemedicine applications for epidemic and pandemic diseases, especially for COVID-19. These potential applications could improve and transform the current practices for pandemic disease management. © 2022 Elsevier Inc.Book Part Selected Design and Analysis Techniques for Contemporary Symmetric Encryption(Springer International Publishing, 2021) Mikhalev,V.; Mihaljević,M.J.; Kara,O.; Armknecht,F.In this chapter we provide an overview of selected methods for the design and analysis of symmetric encryption algorithms that have recently been published. We start by discussing the practical advantages, limitations and security of the keystream generators with keyed update functions which were proposed for reducing the area cost of stream ciphers. Then we present an approach to enhancing the security of certain encryption schemes by employing a universal homophonic coding and randomized encryption paradigm. © The Editor(s) (if applicable) and The Author(s) 2021.Book Part Determination of Aluminum Rolling Oil and Machinery Oil Residues on Finished Aluminum Sheet and Foil Using Elemental Analysis and Fourier Transform Infrared Spectroscopy Coupled With Multivariate Calibration(Wiley Blackwell, 2014) Uçar,Ö.I.; Altuner,H.M.; Günyüz,M.; Dündar,M.M.; Özdemir,D.The surface characteristics of rolled aluminum products such as sheets and foils are strongly affected by the particular rolling process and the type of aluminum rolling oil compositions. After the rolling process, coiled aluminum sheets and foils undergoes annealing to form desired crystal structure and remove the rolling oil residues. Depending on the time and the temperature that rolled aluminum exposed for annealing, rolling oil residues are mostly removed from the coiled aluminum products but if there is any contamination in rolling oil due to hydraulic and gearing parts of the rolling systems these heavier oils are not easily evaporates from the aluminum surfaces especially inner parts of the coiled aluminum sheets and foils. These rolling oil contaminants create serious problems for the some specific applications of these aluminum products in certain industries such as automotive and coating as remaining thin oil layer prevents proper painting and coating. Therefore, it is very crucial for the rolling industry to be able to monitor the heavy oil contamination on the rolled products and determine the source of these contaminants .In this study, it was aimed to develop a nondestructive infrared spectroscopic method combined with chemometric multivariate calibration techniques for the quantitative determination of rolling oil residues and contaminants on the rolled aluminum products. To be able to generate multivariate calibration methods, an industrial elemental analysis system was adopted for the quantitative determination of heavy oil contaminants on the rolled aluminum products and these were used as reference values for infrared analysis of the same samples. In addition, apart from conventional use of elemental analysis systems for the total organic analysis, the raw data (raw chromatogram) obtained from elemental analysis was used to directly generate multivariate calibration models for each contaminant by using synthetically contaminated surfaces as the calibration samples. The results promised that elemental analysis can be used not just for the total organic content but also specifically to determine amount of each infrared spectroscopy with grazing angle spectra collection accessories can be used for nondestructive analysis of these contaminants. © 2014 The Minerals, Metals & Materials Society.Book Part Citation - Scopus: 8Graphene-Based Integrated Electronic, Photonic and Spintronic Circuit(wiley, 2013) Güçlü,A.D.; Potasz,P.; Hawrylak,P.A special class of nanoscale graphene triangular quantum dots (GTQDs) with zigzag edges fulfills all three functions needed for information processing: (i) size quantization turns graphene, a semimetal, into a semiconductor like silicon, with a bandgap tunable from THz to UV, enabling a GTQD-based single electron transistor for information processing; (ii) unlike silicon, GTQDs are equivalent to direct-gap semiconductors that absorb and emit light, and hence can be used for communication; and (iii) GTQDs exhibit a voltage-tunable magnetic moment that can be used for information storage. Therefore, graphene quantum dots might potentially be used as elements of graphene-based integrated electronic, photonic and spintronic circuit. This chapter describes progress toward the understanding of the electronic, optical and magnetic properties of graphene quantum dots. Controlled Vocabulary Terms electronic circuits; graphene; information management; integrated optoelectronics; magnetoelectronics; optical properties; photonics; semiconductor quantum dots © 2013 John Wiley. © 2013 John Wiley & Sons, Inc. Published 2013 by John Wiley & Sons, Inc.Conference Object Citation - Scopus: 1Hardware Realization of a Low Complexity Fading Filter for Multipath Rayleigh Fading Simulator(2010) Özen,S.; Toker,K.A.; Arsal,A.A low-complexity high performance Rayleigh fading simulator, and its Field Programmable Gate Array (FPGA) implementation are presented. This proposed method is a variant of the method of filtering of the white Gaussian noise where the filter design is accomplished in the analog domain and transferred into digital domain. The proposed model is compared with improved Jakes' model [1], auto-regressive filtering [2] and IDFT [3] techniques, in performance and computational complexity. Proposed method outperforms AR(20) filter and modified Jakes' generators in performance. Although IDFT method achieves the best performance, it brings a significant cost in storage and is undesirable. The proposed method achieves high performance with the lowest complexity, and its performance has been verified on Virtex4 and Spartan3e FPGA platforms. Our fixed-point Rayleigh fading-channel simulator utilizes only 2% of the configurable slices, 1% of the Look-Up-Table (LUT) resources and 3% A. of the dedicated multipliers on a Xilinx Virtex4 - xc4vsx35 FPGA platform. ©2010 IEEE.Book Part Factors Affecting the Learning Process of Professionals in Architectural Design Firms(CRC Press, 2009) Ozturk-Barlak,G.B.; Arditi,D.; Gunaydin,H.M.; Kale,S.; Yitmen,I.Learning is considered to be a sophisticated process and a source of competitiveꀊadvantage. Learning is essential in project-based environments. The one-of-a-kind structure of the operations of architectural design firms triggers special learning needs and requires a continuous learning activity. Learning is considered to improve an architectural design firm’s efficiency by recognizing the role of individuals in enhancing the firm’s objectives. However, theoretical research on individual professionals’ learning process in the architectural design is rather uncommon. The process of individual learning is composed of (1) data acquisition (2) assessment of the acquired information and (3) implementation of the knowledge gained in a group setting. Ten factors were identified to assess the effectiveness of the learning processes of professionals. This study is the first study in the field of architecture that presents a conceptual model about the factors that affect the effectiveness of the learning process of professionals. © 2010 Taylor and Francis Group, London, UK.Article Citation - Scopus: 2Film-Formation Property of Vinylidene Chloride-Methyl Methacrylate Copolymer Latex. Ii. Effect of Latex Storage Temperature(2002) Cai,W.D.; Ramesh,N.; Tihminlioglu,F.; Danner,R.P.; Duda,J.L.; Dhaan,A.Changes in the minimum film-formation temperature (MFFT) of 91:9 wt% vinylidene chloride (VDC)-methyl methacrylate (MMA) latex prepared by the seeded batch process during storage at 5, 20, and 40°C were investigated. MFFT of the latex rose the fastest at 20°C. Infrared absorption of fresh and stored latexes and wide-angle X-ray diffraction of powder polymers obtained by lyophilization of fresh and stored latexes indicated a much greater increase in polymer crystallinity during latex storage at 20°C than at 5 and 40°C. Observed increases in MFFT during latex storage correlated with increases in polymer crystallinity. Infrared absorption of polymer stored at 5-60°C in the dry state, such as lyophilized polymer and coating film, indicated that a polymer crystallinity increase was greater during storage at higher temperatures. These results showed that crystallization behavior of 91:9 wt% VDC-MMA copolymer latex differed from that of VDC-MMA copolymer in the dry state.