Browsing by Author "Hossain, Md. Delwar"

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Measuring Chloride Levels at Color Change Boundaries to Precisely Determine the Migration Coefficient of Chloride Ion in Concrete composed of Various Cement Types
(Department of Civil and Environmental Engineering(CEE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh, 2024-11-30) Hossain, Md. Delwar; Khan, Tanvir Mustafiz; Zisan, Al Shahrier Mohammad
Microcontroller Based Joystick Controlled Wheelchair
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Mahmud, Md. Salek; Rahman, Towfiq-ur-; Hossain, Md. Delwar
When people are unable to walk properly due to old age or as a result of some accident or paralysis due to stroke they may often lose their ability to control their movement and means to travel from one place to another.The prime objective of this research was to develop a prototype system which can provide mobility assistance to individuals.This thesis investigates the method of locomotion via a wheelchair which is controlled using input from a joystick and is analyzed via a microcontroller and out drives the motor. This thesis also consider the design consideration of a simple, low cost battery driven wheelchair where the control is achieved using a microcontroller. Two dc motors are differentially driven using PWM signal from microcontroller which provide easy control over speed and direction. There are further proposed design consideration which includes self-sustaining power supply using PV cells with the wheelchair and also long distance wireless control and use of sensors for autonomous control of the wheelchair.
Parental Socio-Economic Status and their Children’s Primary Education: A Comparative Study on Santal and Oraon Communities in Rural Bangladesh
(University of Rajshahi, 2014) Hossain, Md. Delwar; Uddin, Md. Jalal; Uddin, Md. Emaj
Purpose of the study was to explore and examine the relationship of parental socio-economic status (e.g. education, occupation and annual family income) and their children’s primary education (viz. first enrollment, attendance and performance) between Santal and Oraon communities in rural Bangladesh. In so doing, this study hypothesized that better achievement of Oraon children’s primary education than the Santal ones was significantly associated with their higher parental socio-economic status than the Santal parents’ in rural Bangladesh. In order to examine the hypothesis a total of 180 parents (90 for Oraon and 90 for Santal) and their primary school-going children with class 3, class 4 and class 2 were selected through simple random sampling. Pearson’s Chi-Squire test and partial correlation techniques were applied to find out similarities or differences in and associations between parental socio-economic statuses and children’s primary education between Santal and Oraon communities in the study villages of Bangladesh. Pearson Chi-Squire test suggested that frequency distributions of parental educational status (X2 =24.56, p= .006 for father’s education and X2 =16.63, p= .034 for mother’s education) and annual family income except parental occupational statuses (X2 = 8.24, p= .083 for father’s occupation and X2 = 3.67, p= .299 for mother’s occupation) were significant differences (X2 = 78.02, p= .000) at p<0.05 level. Likely, the frequency distributions of first enrollment age (X2 = 25.57, p= .000) at p<0.01 level, class attendance (X2 = 80.85, p= .002) and class performance were significant differences (X2 = 25.73, p= .000) were significantly different between the two communities at p<0.01 level. Result of Partial Co-relation coefficients suggested that parental socio-economic status, especially parents education, occupation and yearly family income were not related to age of first enrollment but negatively related to class attendance (r2= -.212, p=.005). It was interesting to note that parental education ((r2= -.144, p=.057) and income (r2= .191, p=.011) positively related to educational performance between the two communities in study area. The present research clearly showed that there were significant associations between parental SES (e.g. education, occupation and income) and children’s primary education (e.g. enrollment, attainment and performance). Based on the findings social policy-makers may reformulate social policy and programs to provide social and economic support to the poor parents to enhance their children’s primary education in which social development is realized and social change is accelerated in rural Bangladesh.
Verification of SPL Feature Tree by Using Bayesian Network
(East West University, 5/12/2015) Ferdous, Md. Javedul; Hossain, Md. Delwar
Products with new features need to be introduced on the market in a prompt step and organizations need to speed up their development process. Reuse has been suggested as a solution, but to achieve effective reuse within an organization a planned and preemptive effort must be used. Software Product lines are the most promising technique and it increases productivity and software quality and decreases time-to-market. In SPL, a feature tree shows various types of features and seizures the relationships among them. Bayesian Network is gaining much interest in Software Engineering, mainly in calculating software defects and software reliability. It can make notable consequence on feature analysis & its component. This thesis applies BN in modeling and analyzing features in a feature tree. Many feature analysis are modeled and verified in Bayesian Network. The verification of the rules define the analysis rules & its correctness. Finally a tool is used for reduced human error to make result more efficient & precise.