Aksaray Üniversitesi Kurumsal Akademik Arşivi
DSpace@Aksaray, Aksaray Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Rail-to-rail cmos voltage buffer design for lcd column drivers
(Institute of Electrical and Electronics Engineers Inc., 2021) Osmani, Festim; Arslan, Emre; Kıyak, İsmail
A high-speed rail-to-rail CMOS buffer amplifier with LCD column driver application and a very simple circuit structure, is proposed. The buffer employs a differential FVF at the input stage as a main circuit block as well as a smaller number of transistors compared to many other buffer designs. Advantages of this buffer compared to many others are low quiescent current, very small output impedance and a very small settling time characteristic. The main simulations have been performed using LTSpice with 0.35 μm CMOS technology parameters, whereas the layout is drawn using Microwind. The simulations reveal a result of 0.3 μs in terms of settling time with a power supply of 3.3 V while driving a 1 nF capacitive load and the quiescent current is found to be 3.95 μA. The buffer amplifier is also analyzed in terms of FOM (Figure-of-Merit) performance measure and compared to other previous published buffers, in which the proposed circuit shows an outstanding and better performance. Moreover, the robustness of the proposed circuit to process mismatches and tolerances are verified by Monte Carlo analysis
MOS-Only current mode filter design
(Institute of Electrical and Electronics Engineers Inc., 2021) Elmalı, Semih; Kızılırmak, Şafak Murat; Arslan, Emre
This work presents a current mode filter circuit that makes use of only the MOS transistors and its parasitic elements like the transconductance and gate-to-source capacitance. The core circuit, which shows the ac equivalent circuit, has only three MOS transistors. The proposed circuit has a very basic circuit structure and a small layout area. The main advantage of the proposed circuit, as compared to filters formed by the active and passive circuit elements, is the operating frequency range and also the cost. Using 0.35um AMS spice parameters, LTSpice simulations are performed. It is given that the simulation results are in harmony with the theoretical results.
PUFA and MUFA
(Elsevier, 2021) Öz, Mustafa; Uçak, İlknur; Nayik, Gulzar Ahmad
Fatty acids are important structural components that are required for the metabolic events. Polyunsaturated fatty acids (PUFAs) include multiple double bonds while monounsaturated fatty acids (MUFAs) have one double bond which makes them different from the other fatty acids in the cis configuration in their chemical structure. Such fatty acids have benefits which are positive and protective on human health and development including decrease in the risk of cardiovascular diseases which have risk of death, effects in cancer prevention and treatment, attenuation of the risk of Alzheimer’s disease, relieve of clinical symptoms in skin diseases, asthma, allergic diseases, rheumatoid arthritis, eczema, seborrhoeic dermatitis, psoriasis, and reduction in the risk of diabetes. In this chapter, sources, extraction techniques, bioavailability, stability, safety, and toxicology, and health benefits of PUFAs and MUFAs will be discussed.
The qualities of effective teachers in the eyes of Turkish students
(IGI Global, 2021) Orakçı, Şenol
The present study was performed with the purpose of exploring views of middle school students about the effective teacher characteristics. For this purpose, qualitative research method was used. The study included 27 middle school students enrolled at different middle schools in Ankara, Turkey. In the study, content analysis method was utilized. According to analysis results, three major themes named "Professional Qualifications, ″ "Professional Values, ″ and "Human Values" were identified depending on middle school students' views. The findings were interpreted in the light of relevant literature.
The effects of SCAMPER technique activities in the 8th grade simple machines unit on students’ academic achievement, motivation and attitude towards science lessons
(Eurasian Society of Educational Research, 2021) Altıparmak, Tuba; Eryılmaz Muştu, Özlem
This study examines the effects of the SCAMPER technique-based educational activities in the simple machines unit of a science lesson on students' academic achievement, motivation and attitude. The study examines the effects of the simple machines unit activities in the science lesson through a paired quasi-experimental design, which is one of the quantitative research methods. The sample group of the research consists of 33 eighth-grade students studying in a middle school in the Ortaköy district of the Aksaray province in 2018–2019. The research uses simple random sampling method. The experimental group was given SCAMPER-based activities in the simple machines unit for 4 hours a week with a total of 16 hours, and lessons were conducted with the control group in line with the curriculum. To collect data within the framework of the research, the 'attitude scale towards science lesson', scale for 'students' motivation towards science learning' and 'simple machines unit achievement test' were used. As a result, when compared to the control group, there was a significant difference in the academic achievement and motivation of the experimental group who performed SCAMPER-based activities in the simple machines unit of the science lesson. There was no significant difference between the attitude scores of the experimental and control group as a result of the study.
