Hacettepe Üniversitesi Açık Erişim Sistemi (HÜAES)
- HÜAES, Hacettepe Üniversitesi bünyesinde üretilen kitap, makale, tez, bildiri, rapor gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.
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Recent Submissions
USE AND DESIGN OF ACTIVE BRACING SYSTEMS IN THE PROTECTION OF STRUCTURES UNDER SEISMIC EXCITATION
(Fen Bilimleri Enstitüsü, 2026) İrem ORAN; İnşaat Mühendisliği
Earthquakes can cause significant deformation, loss of performance and various
types of cracks in the view of structures. Higher buildings are especially
vulnerable to these effects due to their greater flexibility and increased peak
displacements. This situation poses serious risks to both life safety and the durability
of structures. As a result, vibration control has become an increasingly critical
research area in earthquake engineering. Earthquake engineers have developed
control mechanisms in this field, categorized as passive and active systems. While
passive control systems can be effective under certain conditions, their limited
adaptability, inability to be reused after earthquakes and dependence on the specific
characteristics of seismic events mean they are not always sufficient. Therefore,
active control systems offering higher performance have been developed.
Among active control systems, the Active Bracing System (ABS) stands out. ABS
uses diagonally placed steel rods and cables, along with actuators, to generate
counteracting control forces. These forces help dissipate a significant portion of
the energy generated during an earthquake, reducing vibrations in the structure.
In this study, two different control approaches—LQR (Linear Quadratic Regulator)
and Lyapunov-based control—were used together to enhance the effectiveness of
ABS. The LQR method determines the optimal force to reduce system responses
with minimal control energy, while the Lyapunov approach ensures system stability
and keeps the control forces within physical limits. Combining these two methods
enables both effective and safe control performance. In short, LQR optimizes the
control force, while Lyapunov ensures the system operates within safe boundaries,
making the system more reliable and realistic.
In the scope of this study, two reinforced concrete building models—one with 6
stories and the other with 10 stories—designed. ABS elements were implemented
on the 1st and 4th floors of the 6-story building, and on the 1st, 5th and 9th floors of
the 10-story building. The mathematical model of the structures was developed
using mass, stiffness, and damping matrices, and analyses were carried out
using Mathematica software. El Centro earthquake values were used as ground
acceleration.
Time-domain analyses were performed and for both controlled and uncontrolled
systems, displacement, velocity, and acceleration responses, actuator forces, modal
analysis findings, and peak values at each floor were obtained. The results showed
that all dynamic responses were significantly reduced in systems equipped with ABS
using LQR and Lyapunov-based control. In particular, the reduction of displacement
and acceleration at upper floors demonstrated that the applied control system
noticeably improved the structural performance. Additionally, by integrating LQR
and Lyapunov-based control with In the ABS system, control forces are kept within
physical limits to ensure system stability.
In conclusion, the LQR and Lyapunov-supported Active Bracing System (ABS) has
proven to be a highly effective method for enhancing the earthquake performance
for multi-story buildings with reinforced concrete. The findings indicate that active
control technologies like ABS can be successfully applied to improve safety and
durability in tall buildings, bridges and critical public structure
Değerler ile Bütünleştirilmiş Fen Eğitiminin Ortaokul Öğrencilerinin Küresel Vatandaşlık Algılarına Etkisi
(Eğitim Bilimleri Enstitüsü, 2026) Kibaroğlu Gülsüm; Fen Bilgisi Öğretmenliği
In an increasingly globalized and interconnected world, it is unrealistic to assume that emerging problems are independent of individuals. Humans and their environment function as parts of a closed system that continuously influence one another. In this context, the traditional knowledge and skills individuals have acquired are no longer sufficient for productive living. Instead, attitudes, perceptions, and values have become more influential than knowledge and skills alone. This study aims to examine the perceptions of global citizenship among 7th-grade middle school students before and after a values-integrated science education process. It specifically investigates the effect of science education enriched with values on students’ perceptions of global citizenship and explores students’ opinions regarding this process. A mixed-methods research design was employed, including a quasi-experimental pre-test–post-test control group design and a case study approach. The study sample consisted of 104 middle school students attending a public school in Sincan, Ankara. Quantitative data analysis revealed a statistically significant relationship between values-integrated science education and students’ perceptions of global citizenship. Qualitative findings further indicate that integrating values into science education contributes positively to students’ affective and behavioral development. The process enhanced students’ environmental and social awareness within the framework of global citizenship, with this awareness reflected in their behaviors and transferred to the family environment. Overall, the study demonstrates that interdisciplinary and values-based approaches are effective in transforming students’ awareness into real-life practices, fostering sustainable living behaviors, and emphasizing that education extends beyond the classroom to influence students’ lifestyles and social relationships.
Dijital Oyun Tasarımı Bağlamında Duygu Aktarımı ve Bir 2B Platform Oyunu Uygulaması
(Güzel Sanatlar Enstitüsü, 2026) Batuhan Dikmen; Grafik
This study examines the topic of emotional transfer in 2D platformer games. Although this genre is often seen as a commercial entertainment vehicle, it has the potential to create artistic and emotional experiences. In this context, the study focuses on the question of what applications can maximize emotional transfer in 2D platformer games. Thus, the aim is both to establish a framework for research on the subject and to reveal the emotional potential of this genre. Both theoretical and experimental methods were used in the research. Literature review, game analysis, creation of an original game prototype, player testing and survey methods were employed. The theoretical research addressed topics such as graphic design, emotion, and emotional design in the digital game environment, and investigated components of digital games such as story, narrative, world, environment, characters, and interface in this context. Following the theoretical research, the functional aspect of 2D platformer games and the typical visual structure resulting from this effect were examined. In the game analysis section, specific 2D platformer games were selected, and review criteria were established based on findings from the literature review. This section expanded on previous findings through examples and served as a source of inspiration for the next stage. In the next section, an original 2D platformer game prototype was developed based on the previous findings. In this application study, the graphical, narrative, and mechanical principles defined within the framework of emotional design theory were transformed into a concrete gaming experience. Playability tests and a survey conducted on the prototype analyzed the emotional effects of graphic design on players and the connection established with the story using quantitative and qualitative data. The findings show the decisive role of visual atmosphere and ludo-narrative harmony in conveying emotions.
MALZEME ÖZ DEĞERLERİ İLE TASARLAMA POTANSİYELLERİ: ZUMTHOR YAPILARI ÜZERİNDEN İNCELEME
(2025-11-28) Akın Kıvanç Kamiloğlu; İç Mimarlık ve Çevre Tasarımı
When interior spaces are approached based on the essential values of materials, which are important design elements, they influence the design process and create significant design potentials. This study aims to understand the potential of approaches that address the act of designing with materials within the design process by understanding materials based on their essential values, and to propose a new design method for the design process. To this end, the theories on materials by John Ruskin, Viollet Le Duc, Gottfried Semper, and Adolf Loos, who have fundamentally influenced contemporary design material approaches from the classical modern and post-modern periods, were examined within the scope of the study. The contribution of the obtained data to the classical modern and post-modern periods was revealed.
Using the accumulated data provided by these materials as a basis, the structures of designer Peter Zumthor, who manages the entire design process from this foundation and designs with materials, have been identified within the scope of this study. Forty-one structures designed by the architect between 1985 and 2013, a period he refers to as his mature period, were examined. Among the 41 structures examined, three structures where the material is linked to the design idea, thereby influencing all stages of the design and revealing the full design potential of the material, namely the Leis Houses (Oberhus Structure), Therme Vals, and Bruder Klaus Chapel, have been selected for analysis within the scope of this study.
In this context, the study defines its methodology through two main phases: discourse and action analysis. The discourse section analyzes the theories of the theorists on the material, the ideas on the subject in the literature, and the statements of the designer on the material. The action section represents the collective case analysis section. This section analyzes the three structures identified within the scope.
The findings presented by the research show that when approached based on the essential values of the material, it can be addressed using trace and image approaches, and that this approach can be related to the fundamental idea of design. In this context, the material that relates to the fundamental idea of design is positioned at the starting point of the design process, plays an active role in creating atmospheric decisions with the sensory data provided by the material, it creates the first archetypes of the design and determines the general form of the design, it serves as the basis for the creation of plan and section organizations, and it has the potential to directly and indirectly influence the creation of detail solutions. It has been concluded that it creates collective design phases within the design process and has the potential to frame and complete the process from start to finish within the framework of a holistic design action.
MİMARİ BAKIŞ AÇISIYLA DUVAR SERAMİKLERİ
(Güzel Sanatlar Enstitüsü, 2026) İrem Işık; Seramik ve Cam
In this study, wall ceramics were analyzed from architectural perspective. In the report, the interaction and relation of architecture and ceramic art was researched. To be able to analyze wall ceramics from architectural perspective, the report was divided into five main parts. In the first part, the definition and the relation of architecture, art, ceramic art, wall and wall ceramics were included. In the second part, observed life, cave art and tile art was studied as surface arts. In the third part, the interaction of architecture and wall ceramics were analyzed. The importance of wall ceramics in architectural buildings were analyzed as well. In the fourth part, ceramic artists and their wall ceramic examples were included. In the fifth part, wall ceramics were designed and applied as personal practices. This study report was completed with the conclusion part by analyzing the research data obtained. As a result, in this master’s study report, the relation and interaction in between architecture and ceramic art was evaluated within the scope of wall ceramics.