Gerontosociology

Advancing Gerontological Insights for a Healthier Tomorrow

Welcome, My Dear Visitor!

As a PhD candidate 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

  • 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…

  • Spring Wind Conference 2025 (21.06.2025 Budapest)

    Between June 20–22, 2025, Semmelweis University will host the „Tavaszi Szél Conference” (Spring Wind Conference). My presentation is titled “Measuring the Uncertainty of Concentration in Healthcare Applications.” In this work, I introduce a modelling approach to quantify uncertainty in targeting tasks, using various search algorithms including Bayesian-adaptive models and examine their efficiency in a simulated…

  • XXIX International PhD – Young Researchers – Conference (25.04.2025 Budapest)

    Validation of Health Behavior Measurement Among Older Adults – A Pre-Post Study at the Újbuda Health Development Office This presentation, delivered at the XXIX International PhD – Young Researchers – Conference, introduces a research study led by Péter Domján and colleagues from Semmelweis University. The study examines the health attitudes and behavioral changes among elderly…

  • ORPHEUS 2025 (09.04.2025 – 12.04.2025, Cavtat, Croatia)

    I’ll be presenting at the ORPHEUS 2025 Conference: „Adapting Academia: Navigating PhD Programs Amidst World Crises and Changes,” hosted by the University of Zagreb. My presentation, titled „The Role of Health Development Offices in PhD Training and Navigating Crises in Translational Research,” will explore how Health Development Offices (HDOs) play a crucial role in addressing…