Browsing by Author "Nkrumah, B."
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Item Learning foreign languages online: A case of Chinese language learners in Ghana in the era of COVID-19(Journal of Education and e-Learning Research, 2023) Nkrumah, B.; Asamoah, R.E-learning has gained prominence in education institutions across the world. Teaching and learning of the Chinese language at the University of Ghana has been done online due to the university’s announcement to use e-learning to curb the spread of the coronavirus. The aim of this paper is to investigate the online experiences of students learning Chinese language at the University of Ghana in the era of COVID -19. A structured questionnaire was employed using a simple descriptive case study to obtain the research information. The study selected two hundred and fifty (250) Chinese language learners who responded to the research questionnaires. Findings showed that the majority of the students desired to have training in e-learning because they considered it very useful since it enabled them to learn at their own pace and convenience. Most students shared that they have adequate skills in computing. The study also established that e-learning has become a new way of teaching and the study recommends adaptability in studying Chinese language through the internet.Item Modeling the relationship between precipitation and malaria incidence in children from a holoendemic area in Ghana.(2011) Kriefis, A.C.; Schwarz, N.G.; Kruger, A.; Fobil, J.N.; Nkrumah, B.; Acquah, S.; Loag, W.; Sarpong, N.; Adu-Sarkodie, Y.; Ranft, U.; May, J.Climatic factors influence the incidence of vector-borne diseases such as malaria. They modify the abundance of mosquito populations, the length of the extrinsic parasite cycle in the mosquito, the malarial dynamics, and the emergence of epidemics in areas of low endemicity. The objective of this study was to investigate temporal associations between weekly malaria incidence in 1,993 children < 15 years of age and weekly rainfall. A time series analysis was conducted by using cross-correlation function and autoregressive modeling. The regression model showed that the level of rainfall predicted the malaria incidence after a time lag of 9 weeks (mean = 60 days) and after a time lag between one and two weeks. The analyses provide evidence that high-resolution precipitation data can directly predict malaria incidence in a highly endemic area. Such models might enable the development of early warning systems and support intervention measures.Item Systemic bacteraemia in children presenting with clinical pneumonia and the impact of non-typhoid salmonella (NTS).(2010) Schwarz, N.G.; Sarpong, N.; Hunger, F.; Acquah, S.E.K.; Agyekum, A.; Nkrumah, B.; Loag, W.; Hagen, R.M.; Evans, J.A.; Dekker, D.; Fobil, J.N.; Meyer, C.G.; May, J.; Adu-Sarkodie, Y.BACKGROUND: The diagnosis and antimicrobial treatment of pneumonia in African children in the absence of diagnostic means such as x-ray facilities or microbiological laboratories relies primarily on clinical symptoms presented by the patients. In order to assess the spectrum of bacterial pathogens, blood cultures were performed in children fulfilling the clinical criteria of pneumonia. METHODS: In total, 1032 blood cultures were taken from children between 2 months and 5 years of age who were admitted to a rural hospital in Ghana between September 2007 and July 2009. Pneumonia was diagnosed clinically and according to WHO criteria classified as "non-severe pneumonia" and "severe pneumonia" ("severe pneumonia" includes the WHO categories "severe pneumonia" and "very severe pneumonia"). RESULTS: The proportion of bacteriaemia with non-typhoid salmonella (NTS) was similar in children with pneumonia (16/173, 9.2%) compared to children hospitalized for other reasons (112/859, 13%). NTS were the predominant organisms isolated from children with clinical pneumonia and significantly more frequent than Streptococcus pneumoniae (8/173, 4.6%). Nine percent (9/101) of children presenting with severe pneumonia and 10% (7/72) of children with non-severe pneumonia were infected with NTS. Nineteen out of 123 NTS isolates (15%) were susceptible to aminopenicillins (amoxycillin/ampicillin), 23/127 (18%) to chlorampenicol, and 23/98 (23%) to co-trimoxazole. All NTS isolates were sensitive to ceftriaxone and ciprofloxacin. CONCLUSION: In Sub-saharan Africa, sepsis with NTS should be considered in children with symptoms of pneumonia and aminopenicillins might often not be the adequate drugs for treatment.