Browsing by Subject "Autonomy"

Now showing 1 - 9 of 9

Open Access
A miniature, foldable, collision resilient quadcopter
(2023-06) Bakır, Alihan
In the fields of surveillance, mapping and security, the use of unmanned aerial vehicles (UAVs), is becoming inevitable day by day, especially with their au-tonomous movement capabilities. The main reason for the increasing use of un- manned aerial vehicles is their ability to map and survey unknown and dangerous places such as caves without risking human life. At the same time, the ability to conduct aerial surveillance in full autonomy for public safety and health is also an important factor. Today, UAVs are used for many purposes, such as cave mapping and surveying, detection and intervention of forest fires, and inspection of outdoor and crowded areas for security purposes, often accompanied by an operator. Quadcopters are also used for missions that do not require long duration flight, as they are able to both hold position and ensure a highly stable flight. In addition to their many advantages, these UAVs are very sensitive to even the slightest impact, so their fully autonomous flight is still limited to controlled areas. Various studies are being conducted to increase the crash resistance of the quadcopters. Among these researches, there are different ideas such as protective shells and bumpers that surround the UAV and absorb the impact in case of collisions. The spherical cases that surround the UAV are usually in a mesh structure to be lightweight and not obstruct the airflow. Bumpers designed to protect the most sensitive parts of the UAV, such as the motors and propellers, are insufficient to protect the body. For these reasons, making different parts of the UAV from more flexible materials will eliminate the vulnerability of the UAV and increase its resistance to collisions. In this thesis, in order to increase the impact resistance of quadcopters and to ensure that they do not break, robots with some flexible and some rigid parts were tested and the results of these tests were evaluated in detail. During these tests, the effects of the compliance of the robot’s arms and the compliance of the bumpers protecting the propellers upon the impact were analyzed. In order to make this comparison, flexible and rigid robot bodies with dimensions as close as possible to each other, as well as rigid and flexible bumpers of similar size and structure were designed. The flexible bumper and body were produced by cutting PET sheets via a laser cutter and folding them in an origami-inspired pattern. This production method adds flexibility thanks to the thinness of the PET sheets and structural rigidity thanks to the origami-inspired folding technique. To in- crease the flexibility of the robot in the event of a collision and the stability of the motors, inserts made of TPU are inserted into the body. In addition to impact resilience, this thesis also discusses a soft sensor that can be attached to collision-resiliant drones. This sensor, made of conductive TPU, allows the robot to sense its surroundings by giving it a sense of touch. Thanks to the flexible sensor, robots can detect when a collision occurs and react accordingly. This sensor works entirely based on the flexibility of the UAV’s bumpers and senses the bending of these bumpers. Therefore, such a sensor cannot be used on rigid hulls and bumpers as they do not bend.
Open Access
A perspective on plant robotics: from bioinspiration to hybrid systems
(IOP Publishing Ltd., 2022-11-25) Meder, F.; Baytekin, Bilge; Dottore, E. D.; Meroz, Y.; Tauber, F.; Walker, I.; Mazzolai, B.
As miscellaneous as the Plant Kingdom is, correspondingly diverse are the opportunities for taking inspiration from plants for innovations in science and engineering. Especially in robotics, properties like growth, adaptation to environments, ingenious materials, sustainability, and energy-effectiveness of plants provide an extremely rich source of inspiration to develop new technologies—and many of them are still in the beginning of being discovered. In the last decade, researchers have begun to reproduce complex plant functions leading to functionality that goes far beyond conventional robotics and this includes sustainability, resource saving, and eco-friendliness. This perspective drawn by specialists in different related disciplines provides a snapshot from the last decade of research in the field and draws conclusions on the current challenges, unanswered questions on plant functions, plant-inspired robots, bioinspired materials, and plant-hybrid systems looking ahead to the future of these research fields.
Open Access
Autonomy and robotonomy: The role of gender
(2023-06) Aşkın, Gaye
This study examines how gender affects people's perception of autonomy in social robots. It investigates whether an agent's name (masculine/feminine/neutral/ technical/no-name) and type (human/robot) can impact agency, personification, competency, and gender evaluations and whether these evaluations are at an unconscious level. The study consists of a pre-study and a main study with 150 participants. Participants watched 4-second 18 videos in the main study and answered autonomy-related questions. They also completed three implicit association tasks, adapted according to the study's themes, autonomy, agents, and gender. ANOVA analysis was conducted to analyze the agent, naming, and gender effects for the explicit part. The d-score was calculated for all participants in the implicit part, and an ANOVA analysis was conducted. Regression analysis was conducted to determine gender attribution in the pre-study and main studies. Correlation analyses were also conducted to determine if explicit-implicit parts were correlated. Lastly, a thematic analysis was conducted for qualitative inputs in the explicit part and categorized into nine themes. The study found the main effect of action and agent in agency-level attribution. In competency and gender attribution, agents had no main effect in none of the name conditions. In the implicit part, women and men participants differed in men-independent/women-dependent association IAT-1. The other two IATs, women and men participants, responded similarly. The study suggests that name manipulation does not affect people's autonomy perception, but rather agent types and actions characteristics affect them. Furthermore, people's implicit and explicit answers do not predict each other.
Open Access
Finding the middle way: the formation of democracy and the conflict of authority and autonomy
(2018-06) Civelek, Mert
This thesis aims to find a place where in the conflict of autonomy and authority there is a place for a democratic state to exist. The possibility of a democratic state that could have legitimate authority over its subjects is through consent of the subjects. I claim that individuals in a given neutral state in which there is no sign of a political body that has legitimate authority, will form a body that carries properties of a democratic state. I argue that if there is a possibility for the subjects to refrain from democratic participation, democratic participation can be considered as a way of expressing consent that would enable the state hold legitimate power and impose institutional obligations to its subjects.
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Göklerdeki istikbal: Sivil Havacılık Genel Müdürlüğü
(Bilkent University, 2020) Sülün, Ayşe Aybüke; Bümen, Ebubekir; Çelik, Fatma Selen; Atlı, Gülnur; Yılmaz, Nida Nur
1912 yılında başlayan ilk havacılık çalışmaları, Mustafa Kemal Atatürk'ün "İstikbal Göklerdedir!" sözünü temel alarak 1925 yılında ilk olarak Türk Tayyare Cemiyeti adı altında başlamıştır ve daha sonra Türk Hava Kurumu olarak devam eden kurumsallaşmış yapısını kazanmıştır. 1933 yılı itibari ile önceleri "Türk Hava Postaları" filosu ile ilk Sivil Hava Taşımacılığı gerçekleştirilirken, daha sonraki yıllarda Dünyadaki değişim hızına ayak uydurabilme, Türk Sivil Havacılık faaliyetlerinin uluslararası kimliği, denetlenmesi gibi amaçlar doğrultusunda 1954 yılında Ulaştırma Bakanlığına bağlı olarak Sivil Havacılık Genel Müdürlüğü kurulmuştur. Bu süreçte, çeşitli Sivil Havacılık kazaları yaşanmış ve bu kazaların ardından hava yollarının güvenli hâle getirilmesi için bir dizi önlem alınmıştır. Faaliyetlerini daha hızlı gerçekleştirebilmesi adına 2005 yılı itibariyle Ulaştırma Bakanlığı bünyesinden finansal anlamda özerkliğini kazanmıştır ve Sivil Havacılık Genel Müdürlüğü teşkilatlanmasında değişikliğe gidilmiştir. Sivil Havacılık Genel Müdürlüğü şu an hâlâ çalışmalarını sürdürmektedir.
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Sanat ve özerkleşme süreci -II
(1991) Azaz, Yaşar
Open Access
State-supported provincial university English language instructors' attitudes towards learner autonomy
(2005) Özdere, Mustafa
The purpose of this study was to investigate state-supported provincial university instructors’ attitudes towards learner autonomy and towards sharing instructional responsibilities with learners regarding aspects of students’ own learning. The study was conducted with 72 English language instructors working at Afyonkarahisar Kocatepe University, Akdeniz University, Balikesir University, Mugla University, Nigde University, and Zonguldak Karaelmas University. Data were collected through a questionnaire including Likert-scale questions. The preliminary section of the questionnaire gathered data about the instructors’ educational background and teaching experience. The thirteen items in the questionnaire investigated instructors’ ideas about how much instructional responsibility learners should share in accordance with learner autonomy. Respondents were asked to indicate their opinions on a five-point Likert-scale, with ‘not at all’, ‘little’, ‘partly’, ‘much’, and ‘very much’ for each item. Additionally, the interviews were conducted with 10 instructors from participating universities. The results of the data analysis revealed that participating instructors are neutral to slightly positive toward learner autonomy in their formal teaching environments and consider some areas of teaching and learning as more suitable than others for the implementation of learner autonomy. The outcomes also showed that the participating instructors’ attitudes towards learner autonomy change depending upon the facilities they are provided by their universities and the opportunities for authentic language use in their environments. Moreover, the findings highlighted that an in-service training for the instructors, and systematic and planned adjustments in the curricula might contribute to the promotion of learner autonomy in these universities.
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Türk vergiciliğinde hesap uzmanları kurulu: maliyenin üstatları
(Bilkent University, 2023) Keskin, Ceyhun; Yurdakul, Can Uygar; Çevik, Ahmet Haşim; Daşdemir, Yağızalp; Akdi, Necip Erdem
29 Mayıs 1945’te vergi ve denetim alanlarındaki yetersizliklerden doğan ve Türkiye Cumhuriyeti’ndeki geleneksel vergicilik anlayışına son verip modern bir zihniyet getiren Hesap Uzmanları Kurulu, her ne kadar Maliye Bakanlığı çatısı altında faaliyetlerini sürdürse de özerklik ve tarafsızlık ilkelerini benimsemesiyle kendisini diğer devlet kurumlarından ayrıştırmayı başarmış ve yolsuzluklar karşısında dik bir duruş sergileyerek dikkatleri üzerine çekmiştir. Dolayısıyla Hesap Uzmanları Kurulu (HUK), yıllar boyunca denetim, muhasebe standartlarının belirlenmesi, hesap uzmanlarının eğitimi ve etik kuralların uygulanması gibi önemli görevleri yerine getirerek Türkiye’deki mali düzenin sağlıklı işlemesine katkıda bulunmakla birlikte üst düzey vergi denetimi alanına yeni bir soluk getirmiş; hem devlet hem de özel sektöre nitelikli elemanlar yetiştirmesiyle de ön plana çıkmıştır. Bu çalışmada Türkiye’nin vergicilik ve ekonomi tarihinde, özellikle de devlet bürokrasisinde, önemli bir yere sahip olan söz konusu Kurulun kuruluşu, işleyişi ve kapanışına giden süreç ele alınacaktır.
Open Access
Who supports secession? The determinants of secessionist attitudes among Turkey's Kurds
(Wiley-Blackwell Publishing Ltd., 2016) Sarigil, Z.; Karakoc, E.
Who supports secession in a multiethnic country? What factors lead to secessionist or separatist attitudes? Despite the substantial interest in secessionist movements, the micro-level factors and dynamics behind mass support for secession have been understudied. Using original and comprehensive data derived from two public opinion surveys, conducted in 2011 and 2013 with nationwide, representative samples, this study investigates the determinants of separatist attitudes among Turkey's Kurds. The empirical results show that perceptions of discrimination, ideological factors (i.e. a left-right division and partisanship), region and religious sect do affect support for secession. Our findings provide strong support for the grievance theory and, further, show that ideology is an important factor. However, the results call into question arguments drawing attention to the role of modernisation (i.e. socio-economic status) and of religiosity. The study also discusses some practical implications of the empirical findings. Â© ASEN/John Wiley & Sons Ltd 2016.