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Articles by Rafiqul Islam
Total Records ( 7 ) for Rafiqul Islam
  Saiful Islam and Rafiqul Islam
  Losing information causes losing power. Information is lost when the input vector cannot be uniquely recovered from the output vector of a combinational circuit. The input vector of reversible circuit can be uniquely recovered from the output vector. In this study we have emphasized on the design of reversible adder circuits that is efficient in terms of gate count, garbage outputs and quantum cost and that can be technologically mapped. It has been analyzed and demonstrated that the results of our proposed adder circuits shows better performance compared to similar type of existing designs. Technology independent equations required to evaluate these circuits have also been given.
  M. Mahbubul Islam , Rafiqul Islam , M. Nurruzaman , Ranjit Kumar Ghosh , M. Ali Alamgir , A. K. M. Shahadat Hossain and Zahid al Rafique
  Purity, viability, vigour, green yield and fibre yield of O-9897 (Corchorus olitorius L.) and CVL-1 (Corchorus capsularis L.) were studied. Different seed categories were breeder seed, foundation seed, certified seed and farmers seed. Purity, viability and vigour of breeder seed were the best in all respects and of farmers seed were poor. However moisture content was the highest in farmers seed and lowest in breeder seed. The 1000 seeds weight was highest in farmers seed among the seed categories and in CVL-1 over the variety O-9897. Base diameter, green yield and fibre yield were influenced significantly due to seed categories studied. The highest fibre yield was obtained from the breeder seed (3.20 t ha-1 in 0-9897 and 2.64 t ha-1 in CVL-1). Declining trend of fibre yield were observed like- breeders seed > foundation seed > certified seed > farmer`s seed as well.
  Masudar Rahman , Rafiqul Islam and Mizanur Rahman
  This study is to identify the effects of socio-economic and demographic characteristic on causes and consequences of migration. The data of this study was collected by purposive sampling and interview method in Rajshahi City Corporation. The Logistic Regression Analysis has been used to recognize the influence and determinant of migration. It is indicated that education level, monthly income, type of family and land property significantly effect on causes of migration among the selected variables. The risk of migration is higher times for migrants with educational level primary, secondary and above as compared to migrants with illiterate.
  Rafiqul Islam
  The purpose of the present study is to build up models to male urban forward cumulative population of Bangladesh. For this, the secondary data for male population of urban area of Bangladesh is taken from various issues of censuses. To check up the validity of the model, the model validation technique, Cross-Validity Predictive Power (CVPP) is applied. It is seen that forward cumulative distribution of population follows polynomial model.
  Rafiqul Islam
  The purpose of the present study is to build mathematical models to age structure, the number of persons surviving at an exact age x and age specific death rates (ASDRs) for male population of (1Xvalues) Bangladesh in 1981. For this, the secondary data of age structure for male population has been taken from 1981 census. While values and ASDRs for male population have been taken from Islam (2003). It is 1X found that age structure follows modified negative exponential model while both values and ASDRs for male 1X of Bangladesh in 1981 follows 4th degree polynomial model. To examine whether they are valid or not model validation technique, cross-validity prediction power (CVPP), , is applied to those mathematical models.
  Rashed Mamun , Nazrul Islam Mondal , Rafiqul Islam and M. Kabir
  Child labour remains a widespread problem in the world today. It is evident that, though the child laborers work at various health hazardous situations but they have very little access to primary health care and the overall health condition and nutritional status are very low. This study aims at investigating the factors that influences the health complications of the child laborers during research. For this the primary data were collected using purposive sampling technique by scheduled questionnaire from some selected areas of Rangpur district, Bangladesh. Some statistical techniques like percentage distribution,χ 2 test and logistic regression method have been applied in this study. The percentage distribution represents the overall socio-economic, demographic and health related characteristics of the child laborers. The χ 2 test shows the degree of significance of the association between health complications and some selected explanatory variables. The logistic regression analysis shows that working hour per day, place of work and age at the time of entrance to work appeared to be the most significant factors in determining the likelihood of facing health complications during research.
  Sumaiya Abedin , Rafiqul Islam and Tanvir Hossain
  The main objective of this study, is to examine the differentials in antenatal care coverage. The study uses data collected from some rural and urban areas of Naogaon district, Bangladesh. Information are collected from 800 ever-married women by interview method. Bivariate statistical analysis and logistic regression analysis are used. The ever-married mothers are found medium concerned about their antenatal care coverage. Near one-third mothers had not received antenatal care during their last pregnancy. This situation has prevailed more in urban areas than in rural areas. It has been found that respondentís education, husbandís education and occupation, place of residence, current use of contraception, frequent visit of health workers to the respondents have been statistically significantly associated with the utilization of antenatal care received during pregnancy.
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