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Articles by M.R. Zaman
Total Records ( 6 ) for M.R. Zaman
  M.R. Zaman , D.N.R. Paul , M.S. Kabir , M.A.A. Mahbub and M.A.A. Bhuiya
  Fifteen modern rice varieties were grown in Aman seasons of 2002 and 2003. On the basis of data on days to 50% flowering, 1000-grain weight, plant height, flag leaf area, yield, field grain per panicle, tiller number per hill and flag leaf angle in the lower portion, characters like days to 50% flowering and 1000-grain weight made the largest contribution to the total divergence. After excluding less contributory characters to the total divergence and Mahalanabis D2 values were calculated, then identified the most three distant and closest pairs. From the distance matrix tables of Mahalanabis D2 analysis, (BR10, BRRI dhan30) was found as the closest pair and (BR5, BRRI dhan33) was found most distant pair. It was estimated that among the Aman varieties, yield, tiller number per hill, filled grains per panicle were the less contributing characters towards the total divergence. Breeding for the improvement of those characters, therefore, have the little possibility. However, there is a scope to improve days to flowering using those varieties.
  M.R. Zaman , M.K. Roy and N. Akhter
  A variable X follows chi square distribution and another variable Y follows gamma distribution, then Z = f(x,y) follows chi square mixture of gamma distribution. In this study, Chi-square mixture of Gamma distribution has been defined and determines mean, variance, skewness and kurtosis of the distribution. This distribution is always positively skewed and leptokurtic for any value of the parameters.
  M.R. Zaman , D.N.R. Paul , N. Akhter , M.H. Howlader and M.S. Kabir
  In this study, Chi-square mixture of Chi-square distribution has been defined and determined some characteristics of the distribution. The distribution is always positively skewed and leptokurtic for any value of the parameters.
  A.K. Hira , M. Y. Ali , M. Chakraborty , M. A. Islam and M.R. Zaman
  Proximate components, effect of water-hyacinth leaves (WHL), digestibility of different nutrients of WHL and its nutritive value were determined in the Animal Nutrition Laboratory, Bangladesh Agricultural University, Bangladesh to utilize WHL as feed for goat. Twelve Black Bengal goats of similar age, size and sex were divided into 4 groups having 3 goats in each and fed diets; A (100% Dhal grass- DG) to I , B (75% DG+25% WHL) to II, C (50% DG+50% WHL) to III, and D (100% WHL) to group IV up to 60 days. All the goats were provided 200g-concentrate mixture every day. Goats of group IV were used to determine the digestibility of various nutrients in water-hyacinth leaves. Water-hyacinth leaves contained higher percentage of crude protein, nitrogen free extract and organic matter, and lower percent of crude fibre than Dhal grass. Body weight gain, feed intake and feed conversion efficiency were not significant among the groups. Daily weight gain was 29, 27, 23, and 17g in group I, II, III and IV respectively. Feed conversion efficiency was 16.19, 17.99,18.26 and 24.27 in group I, II, III and IV respectively. Daily dry matter intake in group I, II, III and IV were 0.47, 0.49, 0.42 and 0.42 kg respectively. Average COD of dry matter, crude fibre, ether extract and nitrogen free extract in water-hyacinth leaves were 58.39, 65.38, 59.97, 60.09 and 48.97% respectively. Average digestible nutrients; DCP, DCF, DEE, DNFE and TDN of water-hyacinth leaves were 11.81, 13.60, 2.28, 14.98 and 45.54% respectively.
  M.R. Zaman , M.K. Roy and N. Akhter
  In this study, Chi-Square mixture of Erlang distribution has been defined and determines some characteristics of the distribution. Let X follows a chi-square distribution with v d.f. and Y follows a erlang distribution with parameters α and β then Z = f (x,y) follows chi square mixture of Erlang distribution with parameters v, α and β. The mean, variance, skewness and kurtosis of the distribution be respectively. This distribution is always positively skewed and leptokurtic for any value of the parameters.
  M.S. Zahangir , M.A. Karim , M.R. Zaman , M.I. Hussain and M.S. Hossain
  This study examines the levels, trends and differentials of age at first marriage and also to identify the various demographic, social and economic factors influencing on age at first marriage of rural woman in Bangladesh. In this analysis, the overall mean age at first` marriage of rural Bangladeshi woman is found to be only 14.76 years. Marriage cohort analysis of the respondents suggests that mean age at first marriage among most recent cohort is about 1.22 years higher compared to earlier cohort. Independence χ2-test statistic and logistic regression analysis reveal that respondent`s education, access to mass media, religion, husband`s education, childhood place of residence and region have highly significant impact on age at first marriage, whereas husband`s occupation and respondent`s working status have little bit significant effect. Path analysis technique also reveals that all of the direct effects are significantly influenced on age at marriage and the indirect effects are appreciably prejudiced in the same.
 
 
 
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