• Novel time-series based DDOS attack detection schemes for traditional networks and software defined networks 

  Fouladi, Ramin Fadaei. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)

  Distributed Denial of Service (DDoS) attacks are always one of the most signifi cant threats for computer networks since they affect the user satisfaction by degrading the availability of on-line services. Although some ...
• Multi-modal tensor representations of brain networks 

  Durusoy, Göktekin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)

  Considering the economic, social and psychological burdens of Alzheimer’s disease (AD), the most common form of dementia, it is essential to gain insight into the process and underlying mechanisms of the disease. Using ...
• DDoS attack detection using signal processing and statistical approaches 

  Erhan, Derya. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)

  DDoS attacks cause a variety of changes in the properties of the attributes in the network traffic. Modeling these changes using signal processing and statistical ap proaches provides detection of these attacks. This thesis ...
• Multi-dimensional yield-aware optimization of the analog and heterogeneous circuits 

  Pak, Murat. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  Even though the design of digital circuits is well supported by several CAD tools, this is not the case for analog circuits and MEMS where the design is typically hand-crafted by expert designers. Several tools have been ...
• Design, fabrication and characterization of micromachined THz absorbers 

  Mamaghani, Ayda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  The purpose of this research is to develop a new class of THz absorbers for imaging and sensing applications that can provide improved functionality and perfor mance. These absorbers consist of periodic arrays of layered ...
• Multilayer perceptron neural network in analog VLSI-A system level study 

  Öğrenci, Arif Selçuk. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1999., 1999.)

  Analog neural networks exhibit a potential for proper/suitable hardware implementation of artificial neural networks. Their advantages such as small size, low power and high speed, however, are seriously questioned/confronted ...
• Machine heath monitoring for cyber-physical systems 

  Aydemir, Gürkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  Estimating the failure time of the machinery that are used in the production is crucial to achieve an e cient maintenance in Industry 4:0 era. Remaining useful life (RUL) is the term that refers to the length of time in ...
• Estimating biological changes in human by different markers from RF exposure using modeling and measurements 

  Uluaydın, Niyazi Korkut. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  This thesis dissertation reviews the works of academia on natural occurring electrical, magnetic, and electromagnetic (EM) phenomena and their subtle relations with living organisms. It also investigates the artificial ...
• Split ring resonators in microwave regime for sensing of reagents in aqueous solutions 

  Çamlı, Berk. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  In this thesis, design, fabrication, and characterization of different microwave band split ring resonator-based sensors used for sensing of glucose in aqueous solu tions are presented. Following an introduction to ...
• Improving the error floor performance of LDPC codes 

  Sarıduman, Abdullah. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  Low-density parity-check codes (LDPC) have become one of the most popular error-correcting code families in recent years due to their high error correction performance and easy implementation. They became one of the biggest ...
• A high voltage triboelectric energy harvesting system utilizing parallel-SSHI rectifier and DC-DC converters for SUB-5 hz motions 

  Kara, İsmail. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  In this thesis, the first integrated circuit (IC) implementation of parallel synchronized switching harvesting on inductor (parallel-SSHI) is presented for triboelectric energy harvester targeting 1 Hz to 5 Hz mechanical ...
• Practical channel coding methods for channels with input-dependent noise 

  Ülkar, Mehmet Görkem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  With the emergence of new applications and needs, communications theory started to be applied to outside of the traditional radio frequency (RF) bands or even in completely di erent channels. Molecular communication and ...
• Development of a high level synthesis tool specialized on fir-based multirate systems 

  Yurdakul, Arda. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1999., 1999.)

  Digital Signal Processing (DSP) is the most studied area in design automation, because it is one of the most well-established branches of electrical engineering for several years. In the last few years, it is stimulated ...
• Design of high efficiency switching converters for mobile applications 

  Ozanoğlu, Kemal. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

  High power efficiency is a key design specification in mobile applications, mainly to increase battery life. To answer this need, switching converters are preferred in such applications to convert the battery voltage to ...
• Stable - matching based resource allocation methods in wireless communication systems 

  Sabuncu Sandal, Yağmur. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

  As the number of smart devices increases day by day, the need for new resource allocation techniques also increases. 5G technologies such as Long-Term Evolution Advanced (LTE-A), carrier aggregated heterogeneous networks ...
• Novel signal processing techniques for fiber optic distributed acoustic sensing 

  Ölçer, İbrahim. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

  In this thesis, to reduce the effect of noise in phase-sensitive optical time domain based (φ-OTDR) distributed acoustic sensing (DAS) systems, two novel approaches are proposed and a real experimental φ-OTDR system is ...
• Unsupervised learning of word alignments for statistical machine translation 

  Mermer, Coşkun. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

  Word alignment is a crucial first step in learning statistical translation models. In this dissertation, we propose a Bayesian approach to unsupervised learning of word alignments by introducing a sparse prior on the ...
• Molecular communication in diffusion based channel 

  Akdeniz, Bayram Cevdet. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)

  This thesis deals with diffusion based molecular communication. Unlike conven tional communication systems, the information is encoded with molecules and these molecules are emitted by nanodevices in a diffusive environment. ...
• Magnetically actuated MEMS scanners for laser scanning confocal microscopy 

  Oyman, Hilmi Artun. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

  Magnetically actutated micro-scanners are fabricated via three-dimensional (3D) printingandlasermachiningtechnologiestouseinalaserscanningconfocalmicroscopy application. First, a 3D printed polymer based scanning mirror ...
• Keyword search for low resource languages 

  Gündoğdu, M. Batuhan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)

  Retrieval of spoken content is one key endeavor, not only for finding the speech parts of interest, but also for an automated and facilitated speech mining towards better automatic speech recognition (ASR) systems. In ...

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