Browsing by Author "Khatun, Asma"

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A bibliometric analysis of diarrhoeal disease in Bangladesh
(Annals of Library and Infonnation Studies, 2011-06) Khatun, Asma; Ahmed, S.M. Zabed
Exploring online journalism at The Daily Star
(BRAC University, 2017-12) Khatun, Asma; Huda, Roohi
Genetic diversity analysis of high yielding rice (Oryza sativa) varieties cultivated in Bangladesh
(Korean Journal of Agricultural Science, 2021) Epe, Isma Akter; Choudhury, Abul Kashem; Bir, Md. Shahidul Haque; Khatun, Asma; Aktar, Most Mohshina; Arefin, Md. Shamsul; Islam, Mohammed Aminul; Park, Kee Woong
Investigation of genetic diversity and molecular characterization in high yielding rice varieties is important for their identification. The experiment was conducted during 2016 - 2017 to analyse the genetic diversity of fifteen high yielding rice varieties in Bangladesh by using random amplification of polymorphic DNA (RAPD) markers. Polymorphism was revealed in 12 RAPD primers out of 30, whereas no other reaction was detected on the remaining 18 primers. The 40 out of 45 bands (88.89%) polymorphics were produced by the primers and ranged from 50 to 100%. The maximum number of polymorphic bands was produced by the primer OPB-18 whereas the lowest number of polymorphic bands belonged to OPC-12. The genetic similarity coefficients were determined with the RAPD data, which ranged from 0.47 to 0.94. The unweighted paired group of arithmetic means (UPGMA) dendrogram presented the studied rice varieties into two major clusters. Moreover, the value of Nei’s genetic diversity is 0.26 and the Shanon information index is 0.41. The study produced distinct positions, suggesting that the genotypes were different from each other. The results indicated that these markers could be efficient for comparing the genetic relationships, patterns of variation, and measurement of genetic distance among rice varieties. Considering all of these results, RAPD analysis is found to be an effective tool for estimating the genetic diversity of different rice varieties. The outcomes of this research may contribute to the germplasm data of rice accessions and a future breeding program of rice genotypes.
Open Source Integrated Library System and Usability Issues A Study of Koha Interfaces
(©University of Dhaka, 2023-05-22) Khatun, Asma
Open source integrated library system and usability issues: A study of Koha interfaces
(University of Dhaka, 2015-05-26) Khatun, Asma
This research examined the usability of Koha interface from user’s perspective. It used the Koha OPAC interface available at library.bracu.ac.bd. A series of usability experiments were carried out. A set of search tasks was obtained from a user survey and was used in this research. The first experiment was carried out using both novice and experienced users to see their performance and satisfaction with the interface. The results showed that there were significant differences in the time taken to complete the tasks, success score and the number of errors that they were made. There was no significant difference in term of number of search terms used. There was also no significant difference in satisfaction with the interface between the groups. The second experiment was conducted on novices’ learning and retention with the Koha interface using the same equipment, tasks and environment. The results of the experiment showed that novices could readily pick up interface functionality when a brief training was provided. The result of the comparison of novices’ initial performance, learning and retention sessions showed that there were significant differences in search performance in terms of time taken, number of error made and success score. The comparative analysis between novices’ learning and experienced searchers showed no significant difference between the sessions. The outcome of the usability tests provided helpful information about Koha interface and its usability.