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DONOR-ACCEPTOR TYPE BULK NANO-HETEROJUNCTION SOLAR CELL DESIGNS BASED ON ELECTRONICALLY COUPLED LEAD SELENIDE NANORODS AND LEAD SELENIDE QUANTUM DOTS
Kolay, İrem; Asil Alptekin, Demet; Department of Chemistry (2022-7-22)
Multiple exciton generation (MEG) process has received a great deal of attention in solar energy research due to its high potential in improving photocurrent. In this respect, PbSe NRs are considered as one of the most promising candidates due to their remarkable MEG yield. However, limited number of solar cell studies based on PbSe NRs and their poor performances have been limiting their utilization in photovoltaic (PV) technologies. In this thesis, previously introduced solar cell design, where covalently...
Assessment Of Artificial Neural Network To Improve Hidden Markov Model For Financial Data
Aydoğan Kılıç, Dilek; Kestel, Sevtap Ayşe; Department of Financial Mathematics (2022-7-27)
The aim of this thesis is to eliminate the possible weaknesses of HMMs, which is a successful statistical model that is frequently used in time series modeling. Depending on the selection of the initial parameters of the HMMs, RNN is used as a solution to the failure to reach the global maximum, and it is aimed to benefit from the classification power of this method. The hybrid model, which is developed with this motivation, is built in a way that is suitable for use in non-categorical data, contrary to the...
INTEGRATION THROUGH SMALL-SCALE BUSINESS: THE CASE OF ENTREPRENEURS WITH TURKISH “MIGRANT” BACKGROUND IN GERMANY
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Self-employment as an economic activity has a considerable matter in the migration context. It is associated with social, cultural, political, and economic spheres in which migrants and people with migration background are situated. Migrant entrepreneurship as a particular form of self-employment is related to the transnational labour market since it reflects both these spheres in the host country and immigrant networks and organisations within and across borders. In the migration literature, migrant entrep...
VIEWING EMERGENCY REMOTE TEACHING WITHIN THE ―SEVEN PRINCIPLES FOR GOOD PRACTICE‖ FRAMEWORK: VOICES FROM PREPARATORY SCHOOL EFL INSTRUCTORS
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Due to the sudden change from traditional education to online education, the need for investigating the online teaching practices of EFL instructors became an imperative. Studies revealed that most EFL instructors lacked sufficient training, technological and pedagogical knowledge and faced some difficulties. This mixed-methods study aimed to explore online teaching experiences and perceptions of the EFL instructors working at preparatory schools of three state universities within the "Seven Principles for ...
NEW TMVP-BASED MULTIPLICATION ALGORITHMS FOR POLYNOMIAL QUOTIENT RINGS AND APPLICATION TO POST-QUANTUM CRYPTOGRAPHY
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One of the quantum-safe cryptography research areas is lattice-based cryptography. Most lattice-based schemes need efficient algorithms for multiplication in polynomial quotient rings. The fastest algorithm known for multiplication is the Number Theoretic Transform (NTT), which requires certain restrictions on the parameters of the ring, such as prime modulus. Direct NTT application is not an option for some schemes that do not comply with these restrictions, e.g., the two finalists of the PQC standardizati...
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