Gerontosociology

Advancing Gerontological Insights for a Healthier Tomorrow

Welcome, My Dear Visitor!

As a PhD student at Semmelweis University, my research focuses on the health-related attitudes, decisions, and health behaviors of the ageing population, with particular attention to the social and organizational dimensions of primary prevention. I created this website to provide a comprehensive overview of my research activities and their different directions.

On this site, I present the role and accessibility of Health Development Offices (HDOs), as well as their impact on the health behavior of older adults and the factors that influence the acceptance or rejection of preventive health services.

Another, methodologically oriented line of my research addresses the analysis of uncertainty and patterns underlying empirical data. Within this framework, I am developing and applying a novel metric, the Imprecision Entropy Indicator (IEI), which enables the quantitative assessment of informational uncertainty, concentration, and the structural characteristics of data patterns. This approach is applicable not only in the social sciences, but also in health sciences and decision-support contexts.

Uncertainty can be understood as the maximum amount of information carried by a given data pattern. The two- and three-dimensional spatial arrangement of data provides an information structure that can be analyzed through uncertainty per unit of concentration using the IEI indicator. When this measure is combined with average distance and directional components, it yields an entropy field, the analysis of which allows for a deeper understanding of the observed phenomenon.

The aim of this website is to present these conceptually distinct yet interrelated research directions within a unified interdisciplinary framework.

Thank you for visiting in my hompage and I look forward to collaborating with you to improve the health and well-being of our ageing population.

Peter Domjan

Semmelweis Universy

Doctoral College

PhD Candidate

  • XXX Jubilee International Scientific PhD Conference (27.11.2025; Budapest)

    In November 2025, I delivered an oral presentation at the XXX Jubilee International Scientific PhD Conference, organized by the Professors for European Hungary Association in Budapest. The presentation focused on the awareness of the Újbuda Health Development Office (EFI) and attitudes toward disease prevention among adults aged 60 and over. The study was based on…

  • 33rd Semmelweis Symposium (Poster Presentation, 17 of November 2025; Budapest)

    In November 2025, I presented a poster presentation at the 33rd Semmelweis Symposium, held at the Basic Medical Science Center of Semmelweis University in Budapest. The poster focused on the awareness of Health Development Offices (HDOs) and the barriers to utilizing preventive health services among adults aged 60 and over, based on a cross-sectional questionnaire…

  • MESZK XII Scientific Congress of Healthcare Professionals (04–06.09.2025)

    In September 2025, I presented my research at the XII Scientific Congress of Healthcare Professionals, organized by the Hungarian Chamber of Healthcare Professionals (MESZK). The conference provided an important interdisciplinary forum for discussing evidence-based approaches to healthcare practice, prevention, and system-level performance measurement. My presentation focused on the measurement of health promotion performance in relation…

  • National Outpatient Care and Allied Health Conference 2025 (10.09.2025; Balatonfüred)

    In September 2025, I presented my research at the XXVII National Conference on Outpatient Specialist Care and the XXII National Conference of the Hungarian Chamber of Healthcare Professionals, held in Balatonfüred, Hungary. The presentation focused on the gerontosociological role and national coverage of Health Development Offices (HDO) in Hungary, with particular attention to their contribution…

  • Biomedical Data Science Conference 2025 (07.08.2025; Budapest)

    In August 2025, I had the opportunity to present my research at the Biomedical Data Science Conference 2025 held at Semmelweis University in Budapest. My presentation focused on an adaptive Bayesian learning framework integrating a Precision / Imprecision Entropy Indicator (IEI) to improve efficiency in biomedical decision-support and search processes. The primary aim of the…

  • PhD Scientific Days 2025 (07.07.2025; Budapest)

    I am honored to present at the PhD Scientific Days 2025 at Semmelweis University, where I will share our latest research on validating pre- and post-intervention questionnaires designed for elderly health promotion in Újbuda. Our project aims to develop and assess effective measurement tools that can capture the true impact of health interventions targeting the…