http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
New concepts on $R_{0}$ separation axioms in fuzzy soft topological spaces
Ruhul Amin,Raihanul Islam,Sudipto Kumar Shaha 원광대학교 기초자연과학연구소 2023 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.25 No.2
In this paper, we have introduced and studied some new notions of $R_{0}$ separation axiom in fuzzy soft topological spaces by using quasi-coincident relation for fuzzy soft points. We have observed that all these notions satisfy good extension property. We have shown that these notions are preserved under the one-one, onto and FSP continuous mapping. Finally, we have studied some basic properties of this new concept.
New concepts on R₁ fuzzy soft topological spaces
Ruhul Amin,Raihanul Islam 원광대학교 기초자연과학연구소 2021 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.22 No.2
In this paper, we have introduced and studied some new notions of $R_{1}$ separation axiom in fuzzy soft topological spaces by using quasi-coincident relation for fuzzy soft points. We have observed that all these notions satisfy good extension property. We have shown that these notions are preserved under the one-one, onto and FSP continuous mapping. Moreover, we have obtained some other properties of this new concept.
Sultana Jahan Ophra,Sameena Begum,Raihanul Islam,Md. Nazrul Islam 대한공간정보학회 2018 Spatial Information Research Vol.26 No.6
Bangladesh is a riverine country. Every year it faces many natural hazards due to river. Bangladesh is mainly formed by alluvial deposits. It faces riverbank erosion frequently due to regular shifting of river channels. This research work provides an overview of the trend of riverbank erosion of Padma River of Munshiganj, Madaripur and Shariatpur district. It also shows the land cover change due to riverbank erosion. The riverbank erosion was calculated by using remote sensing and geographic information systems (GIS) techniques. Only secondary data have been used to reach the research goals. Various computer software such as Erdas Imagine, Arc GIS, Google Earth, Environment for Visualizing Images etc. have been used to process and analyze raw data. In this study, using seven selected images of Landsat TM and OLI acquired from 1988 to 2017, the riverbank migration patterns and land dynamics of Padma resulted from accretion/ erosion processes for 29 years were investigated. The migration rates are based on the differences in 1988–1993, 1993–1998, 1998–2003, 2003–2008, 2008–2013 and 2013–2017. The average erosion and accretion rates are 1472.056 and 1610.152 ha/year of Padma, respectively. This study shows Padma got meandered and braided from almost straight channel in the time span.
Md. Mostafa Kamal,Md. Rahmat Ali,Mohammad Rezaul Islam Shishir,Md. Saifullah,Md. Raihanul Haque,Shakti Chandra Mondal 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.6
This study was aimed to optimize the processvariables for improved production of biomass protein usingAspergillus niger from banana fruit peel by the use ofresponse surface methodology. A five-level-four factorscentral composite rotatable design was applied to elucidatethe influence of process variables viz. temperature(20–40 C), pH (4–8), substrate concentration (5–25%),and fermentation period (1–5 days) on biomass and proteincontent. The second-order polynomial models were established,which effectively explicated the variation inexperimental data and significantly epitomized theappreciable correlation between independent variables andresponses. After numerical optimization, the predictedoptimum conditions (temperature of 31.02 C, pH of 6.19,substrate concentration of 19.92%, and the fermentationperiod of 4 days) were obtained with biomass of 24.69 g/Land protein of 61.23%, which were verified through confirmatoryexperiments.