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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ALTINDAĞ’DA GÖÇ VE KENTLEŞME: LİSANSÜSTÜ TEZLER ÜZERİNDEN BİR META-SENTEZ ÇALIŞMASI
(Sosyal Bilimler Enstitüsü, 2026-10-16) Ayşe Gül AĞIRKAN ÖZBEY; Sosyoloji
This study examines socio-spatial change shaped by gecekondu settlements, urban transformation and Syrian migration after 2011 in Ankara’s Altındağ district by exploring relationships between qualitative studies conducted in different periods. Fourteen qualitative graduate theses identified through a systematic search covering 2000-2025 in the Council of Higher Education National Thesis Centre were examined using meta-synthesis. Thesis findings were analysed in MAXQDA following Thomas and Harden’s thematic synthesis approach, yielding nine analytical themes. The conclusion and discussion sections were compared to identify converging, contradictory, and complementary interpretations of residents’ experiences. The theoretical framework is based on Lefebvre’s approach to the production of space and Harvey’s conceptualization of the right to the city. The findings indicate that some households experienced urban transformation through indebtedness, rising living costs and repeated displacement. The weakening of neighbourhood relations, trust and the continuity of everyday life alongside changes in the physical environment is conceptualized as a “socio-spatial void”. This condition was observed in both vacated gecekondu areas and Housing Development Administration (HDA) housing. While low-cost housing employment opportunities, and networks of acquaintances played a prominent role in Syrian migrants’ settlement, insecurity and discrimination were prominent in their housing and employment experiences. Some migrants sublet rented properties to newcomers at higher prices or earned income by acting as intermediaries in finding housing, demonstrating that solidarity networks could also generate profit-seeking relationships. A pattern similar to the practices of “gecekondu entrepreneurs” (individuals who built and sold gecekondu dwellings or facilitated their construction for profit during the early stages of gecekondu development) was also observed among Syrian migrants many years later. The shared experience of poverty among host and migrant communities did not automatically lead to solidarity. Instead, tensions over the distribution of limited social assistance in the district deepened ethnic divisions. Local women’s everyday lives were confined to the home and its immediate surroundings, whereas some migrant women gained greater spatial mobility after migration despite continuing gender-based challenges. For young people and children, stigmatization and insufficient safe communal spaces hindered participation in urban life. The absence of any thesis directly focusing on the urban experiences of people with disabilities and older adults among the theses examined highlights the need for further research on these groups. Future studies examining their experiences of transportation, the use of shared spaces, and access to urban services could help fill this gap and contribute to creating liveable cities for all.
PLATFORM EKOSİSTEMİNDE OYUNLAR VE KULLANICI EMEĞİ: STEAM PLATFORMU ÖRNEĞİNDE KAPİTALİST DEĞERİN ÜRETİM PRATİKLERİ
(Sosyal Bilimler Enstitüsü, 2026) Tutku Yağmur Yanardağ; Radyo Televizyon ve Sinema
This thesis examines how digital gaming platforms have transformed into a new sphere of power and surveillance as they have permeated everyday life, using the Steam platform as a case study. The study addresses the question of how gaming has shifted from being a cultural practice to becoming commodified, and how user labor has been rendered invisible in this process; it discusses this within the framework of the constant renewal of economic structures through the dismantling of the old, the functioning of surveillance as a regulatory mechanism, and the conversion of user data into economic value.
The research is based on in-depth interviews conducted with 25 participants who use Steam. The interviews were analyzed using a phenomenological approach, and the findings were categorized around three main themes: Algorithmic Bias, Accessibility, and New Surveillance and Control Mechanisms. The findings reveal that users’ relationships with the platform are not homogeneous and that platform usage constitutes a multilayered experience in which several practices intertwine.
The findings reveal that Steam’s dollar-based pricing policy in Turkey directly influences users’ purchasing behavior. At the same time, it appears that in-platform economic tools, such as the Steam Wallet, facilitate the circulation of value within the platform while also reinforcing users’ dependence on it. It has been determined that algorithmic recommendation systems, on the one hand, facilitate users’ access to games and the discovery process, while on the other hand, they steer the user experience by creating a limited discovery space through recommended content. In the context of surveillance, it has been observed that a reciprocal relationship of surveillance and visibility emerges, in which users observe, evaluate, and make each other visible. Furthermore, it was concluded that the content users produce through game guides, reviews, mods, and forum posts is part of a value-creation process that can be evaluated within the framework of Terranova’s concept of “unpaid labor.”
In conclusion, the thesis argues that Steam users’ position vis-à-vis the platform cannot be defined as either completely free or entirely passive. Users operate within the structural conditions set by the platform, but they negotiate these conditions in various ways and, at times, develop practices aimed at transcending existing boundaries. For this reason, the user experience is viewed as a multilayered form of relationship shaped by the interplay between the opportunities offered by the platform and the limits it imposes.
Distopyalarda Hukuka Biçilen Rol Üzerine Bir Değerlendirme
(Sosyal Bilimler Enstitüsü, 2026) Ahmet Bertuğ ÖZDEMİR; Kamu Hukuku
Proceeding from the premise that theoretical questions regarding law cannot be answered purely from within the law itself, this study examines the nature, functions, and boundaries of law through dystopias as a literary genre. Emerging from a deeply rooted utopian tradition, dystopia provides a fertile ground for discussing the existential boundaries and conditions of law and social life. Indeed, this study assumes that law sustains its existence between two "limit points": one negative and one positive. The negative limit point corresponds to a state-of-nature phase where social bonds dissolve, whereas the positive limit point corresponds to a stage where law becomes redundant in the state's control over the individual and society.
The dystopias analyzed in this study are examined within a tripartite classification. In early dystopias written by H. G. Wells and Jack London, law is portrayed as an instrument that reproduces the capitalist mode of production and safeguards ruling-class interests. In anti-totalitarian dystopias such as We, Brave New World, and Nineteen Eighty-Four, it is concluded that a positive limit point is reached where law becomes superfluous through disciplinary apparatuses that grant the state absolute dominion over the biological and psychological integrity of the individual; it is observed that law finds a fissure to survive within social spaces deliberately left unregulated by the state; and the validity of natural law perspectives is debated within an understanding that reduces truth and justice to the will of the state. In post apocalyptic dystopian fiction or state-of-nature dystopias such as The Road, The Scarlet Plague, or Lord
of the Flies, as law reaches its negative limit point, it comes to the fore through its functions of order, security, and peace, yet fails to sustain its existence without coercive enforcement power.
In conclusion, it can be argued that dystopias—by laying bare the structural tensions among coercion, ideology, social life, and the legal order—offer a fruitful conceptual foundation for theoretical legal studies by accentuating the existential boundaries of law, its sociological dimension, and its role as a terrain of struggle.
YENİ BİR İRRİGASYON SOLÜSYONU TRİTON’UN EPOKSİ REZİN VE KALSİYUM SİLİKAT ESASLI KÖK KANAL DOLGU PATLARININ İTME BAĞLANMA DAYANIMINA ETKİSİ
(2026) Esma Böken Kır; Endodonti
BÖKEN KIR E. The Effect of Triton, a Novel Irrigation Solution, on the Push-Out Bond Strength of Epoxy Resin-Based and Calcium Silicate-Based Root Canal Sealers. Hacettepe University Faculty of Dentistry, Department of Endodontics, Specialization Thesis, Ankara, 2026. This study evaluated the effect of Triton, a novel irrigation solution, on the push-out bond strength of epoxy resin-based and calcium silicate-based root canal sealers. A total of 90 extracted human single-rooted teeth were used in the study. Specimens were divided into two main groups based on the final irrigation protocol: Triton and conventional irrigation (n=45). Each main group was further subdivided into three subgroups based on the root canal sealer used: AH Plus (Dentsply, USA), MTA Fillapex (Angelus, Brazil), and CeraSeal (Meta Biomed, South Korea) (n=15). Root canals were prepared to size F4 using the ProTaper Gold rotary file system (Dentsply Maillefer, Switzerland). The corresponding irrigation protocols were applied, and the final irrigation solutions were activated with an EndoActivator (Woodpecker-Dte, China). After obturation with the assigned root canal sealers, coronal and middle root sections were obtained from each specimen. Push-out bond strength testing was performed on a universal testing machine (Lloyd LRX, England), and failure modes were evaluated under a stereomicroscope (Olympus, SZ-61, Japan). Data were analyzed using appropriate statistical methods. No statistically significant differences were observed between the Triton and conventional irrigation protocols in the coronal and middle sections of the AH Plus, MTA Fillapex, and CeraSeal groups (p>0.05). A statistically significant difference among root canal sealers was observed only in the coronal section of the conventional irrigation group (p=0.003), attributable to the comparison between the AH Plus and MTA Fillapex groups. MTA Fillapex exhibited lower bond strength values. A significant difference between the coronal and middle sections was observed only in the MTA Fillapex subgroup of the conventional irrigation group (p=0.047). Cohesive failure was the primary failure mode across all groups. Within the limitations of this study, the Triton irrigation solution performed comparably to the conventional irrigation protocol in terms of the push-out bond strength of root canal sealers. In addition, AH Plus and CeraSeal tended to exhibit higher bond strength values than MTA Fillapex, and cohesive failure was the predominant failure mode in all groups.
AÇIK APEKSLİ DEVİTAL DİŞLERDE VAKA SEÇİMİ VE KLİNİK PROTOKOL AÇISINDAN DİŞ HEKİMLERİ, ENDODONTİSTLER VE PEDODONTİSTLERİN TEDAVİ YAKLAŞIMLARI
(2026) Pelin KARAYEL; Endodonti
KARAYEL, P., Evaluation of Treatment Approaches of General Dentists, Endodontists, and Pediatric Dentists Regarding Case Selection and Clinical Protocols for Non-vital Immature Teeth with Open Apices, Hacettepe University, Faculty of Dentistry, Department of Endodontics, Specialty Thesis, Ankara, 2026. This study aimed to evaluate and compare the knowledge levels, information sources, treatment-planning approaches, regenerative endodontic treatment (RET) protocols, success criteria, follow-up strategies, complications encountered, and treatment preferences among general dentists, endodontists, and pediatric dentists regarding the management of non-vital immature permanent teeth with open apices. This cross-sectional, questionnaire-based study included 230 dentists practicing in Türkiye, comprising general, endodontic, and pediatric dentists. A structured questionnaire was used to collect data on sociodemographic characteristics, self-reported knowledge level, information sources, factors influencing treatment planning, RET protocols, success criteria, follow-up approaches, complications, and responses to two clinical case scenarios. Statistical analyses were performed using appropriate statistical methods, and a p-value of <0.05 was considered statistically significant. Endodontists and pediatric dentists reported significantly higher levels of knowledge regarding RET than general dentists. These specialists also relied more frequently on current scientific literature and the clinical guidelines of the American Association of Endodontists (AAE) and the European Society of Endodontology (ESE). Root development stage, patient age, infection control, and apical diameter were considered important treatment-planning factors by all participants, whereas significant intergroup differences were observed only in the evaluation of periapical lesion size. Significant differences among specialties were also identified regarding irrigation solutions, intracanal medicaments, irrigation activation techniques, and coronal barrier materials. In the first clinical case scenario, which represents an ideal indication for RET, Endodontists and pediatric dentists more frequently preferred RET than general dentists. In contrast, MTA apexification was more commonly preferred in the second case scenario, which involved uncontrolled type 1 diabetes mellitus. Furthermore, specialists showed greater agreement with contemporary international guidelines on treatment success criteria and follow-up protocols. Clinical decision-making regarding regenerative endodontic treatment is influenced not only by professional specialty but also by knowledge level, use of evidence-based guidelines, professional experience, and case-specific characteristics. Clinicians with greater access to current scientific evidence and international guidelines were more likely to adopt biologically based treatment approaches. These findings underscore the importance of continuing professional education and broader dissemination of evidence-based clinical guidelines to promote standardized, contemporary, and predictable regenerative endodontic practice.