İstanbul Sağlık ve Teknoloji Üniversitesi Kurumsal Akademik Arşivi
DSpace@İSTÜN, Üniversite mensupları 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
Photocatalytic performance of ag/humic acid magnetic nanoparticles for degradation of methylene blue in aqueous medium
(Springer Nature Link, 2025) Kaba, İbrahim; Özdemir Olgun, Fatoş Ayça
The contamination of water as a result of the discharge of organic dyes from industrial facilities that process pharmaceuticals, textile fabrics, leather, and petrochemicals, is a significant concern. The water quality of the aquatic environment is mostly impacted by pigments, even in small amounts less than 1 mgL−1 (Sharma et al. 2021). Methylene blue which is considered as mutagenic, toxic, and non-biodegradable, was selected as a model in this study to represent the azo dye class. The undesired effects of dye contamination can be eliminated through the sustainable and eco-friendly remediation procedure of photocatalytic degradation. The properties and efficiency of the catalytic reaction are significantly influenced by the morphology of the catalyst. Mott Schottky measurements and chronoamperometry were employed to elucidate the electronic properties of a composite silver humic acid magnetic nanoparticle (Ag/HA MNP) with a core-shell structure. The nanoparticle was subsequently employed in the photocatalytic degradation of methylene blue. The indirect band gap energy was calculated as 1.82 eV by employing Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-DRS). The optimal parameters established in the study were used to maintain the effective photocatalytic degradation of methylene blue in an aqueous medium. Optimization studies for photocatalytic degradation of model dye-MB showed that the optimum degradation percentage (42%) was achieved rapidly in a short time period of 30 min with 0.06 g MNP in 10 mgL−1 solution. The first-order rate constant was determined to be 4.4 × 10−2 s −1 . This study contributes to the literature by proposing Ag/HA magnetic nanoparticles which were synthesized and installed for the first time as a catalyst for the photodegradation of methylene blue in aqueous medium.
DeepMatch: A BERT-powered talent matchmaking approach
(Springer Nature Link, 2025) Gözüaçık, Necip; Topaloğlu, Atakan; Evren, Ayse Mine; Karakuş, Serkan; Akram Bennour; Ahmed Bouridane; Somaya Almaadeed; Bassem Bouaziz; Eran Edirisinghe
Consultancy companies aim to match their employees to customer projects based on their employee’s talents. Traditional matchmaking methodologies are founded on manual processes that rely on rules of thumb or algorithms that are based on handcrafted heuristics, which cause the matchings to be not only sub-optimal, but also time-consuming, subjective, and prone to human errors. In this paper, we propose a novel consultancy matching algorithm that utilizes BERT to semantically find the most optimal consultant-project matchings for a given set of consultants and projects, pairing relevant project specifications with consultant specifications using the JVSAP algorithm. In doing so, our proposed talent matchmaking system may be utilized to improve the accuracy and efficiency of consultancy matching, thereby facilitating more effective consultancy engagements. Our findings suggest that the pairings demonstrate a discernible alignment with human intuition, as evidenced by the consistent correlation between consultants possessing domain-specific expertise and projects characterized by corresponding thematic descriptions. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
The impact of unplanned pregnancy on prenatal attachment and subjective happiness
(Ataturk University Publications, 2025) Şahin, Ezgi; Yazıcı, Saadet; Yurtsev, Esra
Objective: Unplanned pregnancies are a major public health problem that causes undesirable socio‐ economic and psychological consequences for women, children and families in both developed and developing countries. This study was carried out to evaluate the impact of unplanned pregnancy on prenatal attachment and subjective happiness. Methods: This analytical cross‐sectional study was conducted with 342 pregnant women who attended the Obstetrics and Gynecology outpatient clinic of a university hospital between July 2022 and October 2022. Data was collected using the Demographic Information Form, London Unplanned Pregnancy Determination Scale, Prenatal Attachment Inventory, and Subjective Happiness Scale. The data was evaluated using descriptive statistics, as well as pearson correlation and regression analyses. Results: Age, number of pregnancies, pregnancy week, feelings experienced upon learning of the pregnancy, and previous pregnancy loss status all appear to have a statistically significant effect on the prenatal attachment and subjective happiness scale (p<.001). Regression analysis results show that prenatal attachment and subjective well being have a statistically significant effect on the London Unplanned Pregnancy Determination Scale (R2 =0.495). Conclusion: It has been found that unplanned pregnancies negatively affect early maternal behavior and individual happiness before birth. Therefore, it is considered important to provide counseling and psychosocial support to all pregnant women in order to bond with motherhood and ensure subjective happiness, along with prenatal education.
The impact of shariah governance, risk management and financial innovation upon performance: organizational agility as mediator
(Gomal University, 2025) Liaqat, Muhammad Mohsen; Sair, Shrafat Ali; Sohail, Aamir
This study examined the impact of Shariah governance, risk management, and financial innovation on performance of Islamic financial institutions (IFIs) in Pakistan, with a specific focus on mediating role of organizational agility. A quantitative research design was employed, and data were collected through structured questionnaire from 300 managers of Islamic banks across Pakistan. The findings, analyzed using the Partial Least Squares Structural Equation Modeling (PLS-SEM), revealed that Shariah governance and risk management had a significant effect upon IFI performance, while financial innovation exhibited moderate yet positive impact. Moreover, organizational agility partially mediated relationships, indicating that agility played crucial role in enhancing effectiveness of governance, risk management & innovation in driving performance. These results offer valued insights for policymakers and Islamic financial institutions, emphasizing the need for robust Shariah governance frameworks, proactive risk management strategies & continuous financial innovation to sustain and enhance institutional performance. This study donates to literature by integrating organizational agility as mediator, offering novel perspective on how Shariah governance, risk management, and financial innovation collectively enhance performance of Islamic financial institutions.
Evaluation of the relationship between pneumatization of mastoid process, articular eminence and glenoid fossa on CBCT
(Universitas Airlangga, 2025) Kotanlı, Sedef; Yalçın, Eda Didem
Background: Pneumatization refers to air-filled spaces within the bone. The studies about articular tubercle/eminence pneumatization were only few in numbers with unclear information regarding the data on pneumatization in this region. PAT may become predisposed to the spread of inflammatory processes along the temporomandibular joint. Traumatic occlusion, one of the triggers of the TMJ inflammatory process, can occur during conservative dentistry treatment which requires the attention of a dentist to avoid TMJ disorder. Purpose: This study aimed to evaluate the prevalence, characteristics and relationships of mastoid process pneumatization (MPP), articular tubercle/eminence pneumatization (PAT), and glenoid fossa pneumatization (PGF) in one population in Turkey by using cone-beam computed tomography (CBCT). Methods: In total, 739 of CBCT images were examined retrospectively. The prevalences of the pneumatization by age, gender, laterality and locularity were detected. Independent t-test and the chi-square test for the significance of differences between variables. Results: Apneumatic type MPP was detected in 3.1% of cases, partial pneumatic type MPP in 33.6%, pneumatic type MPP in 63.3% of cases. PGF was detected in 28.0% of the sides and PAT in 23.7% of cases. There was no statistically significant relationship found between the presence of PAT and PGF with gender and age (p>0.05). In 45 cases with a pneumatic type MPP, PGF was not observed in any of them, while no PAT was determined in 44 (97.8%) of 45 cases. Pneumatic type mastoid was detected in 309 (92.8%) of 333 cases with multilocular PGF and in 89 (82.4%) of 108 cases with unilocular PGF. There was a statistically significant relationship found between MPP and PAT with PGF types (p <0.05). Conclusion: It is necessary to detect these air gaps before TMJ surgery to prevent complications during and after the operation. It will be more accurate if PAT and PGF are assessed on 3D technics than on 2D radiographs. Relationship between MPP pneumatization degree and PAT and PGF can help for understanding the features and functions of PAT and PGF, it has been considered useful to also determine the prevalence and characteristics of PAT in a population of traumatic patients of occlusion treatment and to examine the possible relationship between traumatic types of occlusions and pneumatized articular eminence.
