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    Öğe
    Comparative Analysis of Vision Transformers and Morphological Approaches for Ki-67 Index Estimation on Histopathologic Images: An Experimental Evaluation
    (Ieee, 2024) Akdeniz, Ahmet Sezer; Ozgur, Berkan; Sahin, Emre; Karadag, Ozge Oztimur; Gunizi, Ozlem Ceren
    This research comprehensively compares two different methodologies for predicting the Ki-67 index- morphological-based analysis and Vision Transformers (ViT). The morphological method focuses on the shape and structural features of tissues and cell structures. On the other hand, Vision Transformers represents an innovative approach developed through the use of attention mechanisms and transformer architectures. ViT offers a different perspective by modeling global context information in recognizing image patterns. This analysis provides a deeper understanding of the accuracy, efficiency, and applicability of current techniques in histopathological image processing, highlighting the potential to advance existing methodologies used in cancer diagnosis. This comparative study aims to evaluate the performance differences between morphological analyses and transformer-based models, identifying the most effective and reliable methods for predicting the Ki-67 index. Experimental analysis, revealed that due to the limited number of labeled data on this domain, traditional morphologic approaches are currently more promising than the vision transformers.
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    Öğe
    The impact of nurses' ethical perceptions and sensitivities on care behaviors in internal medicine services
    (Univ South Bohemia Ceske Budejovice, Fac Health Social Sciences, 2025) Duzalan, Ozlem Bulantekin; Cosar, Arife Albayrak; Sahin, Emre
    Background: Ethical decision making is a complex process in health and nursing care. Whenever nurses make ethical decisions, they also have to consider what benefits the patient. Some studies have shown that nurses' ethical perceptions and sensitivities directly affect quality of health care. Aim: This study aimed to assess the impact of internal medicine nurses' ethical perceptions and sensitivities on the quality of care. Methods: The sample of this analytical cross-sectional study consisted of two hundred nurses (n = 200) from internal medicine clinics of a university hospital (in Turkey). Data collection tools used to collect the data were a Nurse Information Form, the Caring Behaviors Inventory-24 (CBI-24), the Moral Sensitivity Questionnaire (MSQ), and the Hospital Ethical Climate Survey (HECS). Data were analyzed with percentages, the Mann-Whitney U test, and correlation analysis. Results: A significant negative correlation was found between the total score of the CBI-24 (r = -0.152, p < 0.005) and the total score of the MSQ. A significant positive correlation (p < 0.05) was found between all subscale and total scores of the BDI-24 and all subscale and total scores of the HECS. There was no statistically significant correlation between HECS and MSQ (p > 0.05).