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AlN Piezoelectric Quad-Actuators for 2D Optical Micro Scanning
(Taylor & Francis Ltd, 2022) Hah, Dooyoung; 0000-0002-1290-0597; AGÜ, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği Bölümü; Hah, Dooyoung; 01. Abdullah Gül University; 02. Mühendislik Fakültesi; 02.05. Elektrik & Elektronik Mühendisliği
Piezoelectric actuation has been one of the frequent choices for optical micro scanning. In most of the cases, lead zirconate titanate (PZT) has been used as the piezoelectric material. However, PZT has a potential issue in biomedical applications due to the content of lead. For this, AlN can be used as an alternative. The main drawback of AlN is its low piezoelectric coefficients. In order to overcome such a drawback, this paper presents a novel actuator configuration, designed for a quasi-static operation mode. Quad-actuators and meander-shaped hinges are the essence of the proposed actuator configuration. Numerical simulation study is carried out to prove the concept of the device. The study also shows that the proposed scanner can have the optical scan angle of 9 degree at a quasi-static mode. Two different scan modes, a raster-like mode and a Lissajous mode are tested, demonstrating the two-dimensional scanning capability of the device.
Investigation of the Antitumor Effect of Targeting PI3K-AKT-mTOR Pathway and Histone Deacetylase Enzymes on Acute Myeloid Leukemia Cells
(Cig Media Group, Lp, 2021) Sansacar, Merve; Sagir, Helin; Akcok, Emel Gencer; AGÜ, Yaşam ve Doğa Bilimleri Fakültesi, Biyomühendislik Bölümü; Sansacar, Merve; Sagir, Helin; Akcok, Emel Gencer; 01. Abdullah Gül University; 04. Yaşam ve Doğa Bilimleri Fakültesi; 04.01. Biyomühendislik; 04.02. Moleküler Biyoloji ve Genetik
Citation - Scopus: 11
Kinetic Rosette Patterns and Tessellations
(Wit Press, 2017) Beatini, Valentina; AGÜ, Mimarlık Fakültesi, Mimarlık Bölümü; Beatini, Valentina; 01. Abdullah Gül University
The paper investigates the possibility to create kinetic rosette patterns and their tessellations by means of modular linkages which rely on the same type and number of symmetry operations as the reference models. The mechanisms show a hierarchy of movements. It is found that symmetry is an effective unifying concept in the design of both the fixed models and the mechanisms. Furthermore, the resulting rosette linkages and their tessellations have peculiar kinematic characteristics if compared to other modular mechanisms which may be alternatively used to reproduce the same kind of models. © 2023 Elsevier B.V., All rights reserved.
A New Approach for Numerical Solution of Linear and Non-Linear Systems
(Korean Soc Computational & Applied Mathematics & Korean Sigcam, 2017) Zeybek, Halil; Dolapci, Ihsan Timucin; AGÜ; Zeybek, Halil; 01. Abdullah Gül University
In this study, Taylor matrix algorithm is designed for the approximate solution of linear and non-linear differential equation systems. The algorithm is essentially based on the expansion of the functions in differential equation systems to Taylor series and substituting the matrix forms of these expansions into the given equation systems. Using the Mathematica program, the matrix equations are solved and the unknown Taylor coefficients are found approximately. The presented numerical approach is discussed on samples from various linear and non-linear differential equation systems as well as stiff systems. The computational data are then compared with those of some earlier numerical or exact results. As a result, this comparison demonstrates that the proposed method is accurate and reliable.
Statistical Analysis of Vehicle Driver Behaviors
(Amer Inst Physics, 2018) Saracli, Sinan; Gazeloglu, Cengiz; 0000-0002-8222-3384; AGÜ, Eğitim Bilimleri Fakültesi, Temel Eğitim Bölümü; Gazeloǧlu, Cengiz; 01. Abdullah Gül University
Purpose of this study is to examine the drivers' attitudes and behaviors in traffic via statistical techniques. With this purpose, the reactions of the motor vehicle drivers in traffic, correlations between negative reactions and personality characteristics and how they describe themselves and how they feel while they are driving have been examined. The participants of this study are composed of 500 drivers in Afyonkarahisar Province dates between 01 April - 30 June 2016. To measure the drivers attitudes and behaviors in traffic, a Likert scale type questionnaire, which was used in Cmar 's (2007) study, ranging from 1 'strongly disagree' to 5 'strongly agree' is applied on a face-to-face basis. Because of some unfilled and wrong filled questionnaires, the statistical analyses were applied to over 440 questionnaires. Drivers attitudes and behaviors and the behavior types whether they do or they exposure, on their feelings and determinations of themselves as a driver were examined via CHAID and Multi Dimensional Scaling Analysis. SPSS Software is used to perform the statistical analysis. Some of the important results of the analysis showed that drivers who feel themselves aggressive while driving, determine themselves as drivers since they were born. Physical attack / fighting: as a behavior that they were exposed to was also found significant on the variable of determining themselves as how driver they are.
What Does the Bibliometrics of an Interdisciplinary Field Tell Us?: The Case of Cognitive Science
(Seoul Natl Univ, inst Cognitive Science, 2023) Arik, Beril T.; Arik, Engin; 0000-0002-0981-257X; AGÜ, İnsan ve Toplum Bilimleri Fakültesi, Psikoloji Bölümü; Arik, Engin; 01. Abdullah Gül University; 10. Rektörlük; 06. İnsan ve Toplum Bilimleri Fakültesi; 06.02. Psikoloji
This study investigated the bibliometric characteristics of an interdisciplinary field, Cognitive Science, which consists of contributions from diverse fields such as psychology, computer science, philosophy, linguistics, and anthropology, among others. The results showed that there were 4,711 publications in Web of Science between 1900 and 2017, with an exponential increase in the number of publications in recent years. About two-thirds of publications were classified as social science, of which 41% were in the field of psychology. Seventy percent of the publications were journal articles, half of the publications were written by researchers in the USA, and 95% of the publications were in English. Corpus analyses of abstracts and keywords showed that frequently used words included cognitive, science, research, theory, model, cognition, information, learning, and psychology. These analyses also showed that research in this field centered on the common themes of cognition, information, psychology, language, learning, representation, artificial intelligence, and mind before 2010 and focused on more restricted themes such as embodied and extended cognition, morality and religion, quantum, and music after 2010.

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