Szerző: " Opoku-Sarkodie Richmond"

Opoku-Sarkodie Richmond; Bartha Ferenc Ágoston; Van Leeuwen-Polner Mónika; Röst Gergely: Bifurcation analysis of waning-boosting epidemiological models with repeat infections and varying immunity periods.
MATHEMATICS AND COMPUTERS IN SIMULATION, 218. pp. 624-643. ISSN 0378-4754 (2024)

Opoku-Sarkodie Richmond; Bartha Ferenc Ágoston; Van Leeuwen-Polner Mónika; Röst Gergely: Dynamics of an SIRWS model with waning of immunity and varying immune boosting period.
JOURNAL OF BIOLOGICAL DYNAMICS, 16 (1). pp. 596-618. ISSN 1751-3758 (2022)

Wafubwa Ruth Nanjekho; Csíkos Csaba; Opoku-Sarkodie Richmond: In-service mathematics teachers’ conception and perceptions of metacognition in their teaching experience.
SN Social Sciences, 2 (2). Terjedelem: 21 p.-Azonosító: 21. ISSN 2662-9283 (2022)

Nzimande Ntombifuthi P.; El Tantawi Maha; Zuñiga Roberto Ariel Abeldaño; Opoku-Sarkodie Richmond; Brown Brandon; Ezechi Oliver C.; Uzochukwu Benjamin S. C.; Ellakany Passent; Aly Nourhan M.; Nguyen Annie Lu; Folayan Morenike Oluwatoyin: Sex differences in the experience of COVID-19 post-traumatic stress symptoms by adults in South Africa.
BMC PSYCHIATRY, 22 (1). Terjedelem: 8 p.-Azonosító: 238. ISSN 1471-244X (2022)

Wafubwa Ruth Nanjekho; Opoku-Sarkodie Richmond; Csíkos Csaba: Construction and Validation of a Test for Measuring Students’ Proportional Reasoning on Rates, Ratios, & Proportions.
International Journal of Pedagogy, Policy and ICT in Education, 8. pp. 53-76. ISSN 2026-6081 (2020)