Estimation of Traffic Intensity Based on Queue Length in a Single M/M/1 Queue

In this article, maximum likelihood estimator (MLE) as well as Bayes estimator of traffic intensity (ρ) in an M/M/1/∞ queueing model in equilibrium based on number of customers present in the queue at successive departure epochs have been worked out. Estimates of some functions of ρ which provide measures of effectiveness of the queue have also been derived. A comprehensive simulation study starting with the transition probability matrix has been carried out in the last section.     

Pregnancy termination intervals in a rural area of Bangladesh

Pregnancy termination intervals, i.e., live birth to live birth (LB-LB), live birth to fetal loss (LB-FL), and fetal loss to live birth (FL-LB), are analyzed prospectively between 1966 and 1970 in a rural population (117,000) of Bangladesh. Results indicate that the mean LB-LB interval was almost 30 months, the LB-FL interval 27 months, and the FL-LB interval 18 months. In addition, postpartum amenorrhea was estimated to be about 13-14 months, and the time added by a fetal loss toa LB-LB interval about 15 months. No relationship was found between LB-LB intervals and the number of living or dead children.     

Age Misstatement for Young Children in Rural Bangladesh

Age data for 3,393 children, six years of age and under, in rural Bangladesh are analyzed for the level and pattern of age misstatement. Random error, age heaping at whole years, and preferences for particular ages are found in the data. Variation in age reporting is discovered to increase monotonically with age. Systematic errors in age misstatement display modest overstatement for the first four years of life and more pronounced understatement for ages 4, 5, and 6. Age misstatement is examined for its effect on one indicator often used in nutritional surveillance—weight-for-age of children. The impact of the various types of age misstatement (a) increases the difficulty of interpreting weight-for-age and (b) obscures accurate understanding of malnutrition in Bangladeshi children.     

The effect of divorce on child survival in a rural area of Bangladesh

The data for this study come from Matlab, a rural area of Bangladesh, where a continuous registration of demographic events has been maintained by the International Centre for Diarrhoeal Disease Research, Bangladesh since 1966. A total of 11,951 first marriages of Muslims that took place in the area between 1975 and 1987 were followed until the end of 1989, to examine the relationship between parental marriage breakdown and survival of first live-born children. The impact of divorce on survival of children during infancy and childhood was examined, using hazard analysis. Other independent variables included age of mother at birth, and mother's education, year of birth, sex of children, and residence at the time of childbirth. It is shown that the net odds of death among children of divorced mothers in infancy and childhood were respectively 3.2 and 1.4 times higher than those of mothers whose marriages continued. The paper also discussed the possible mechanisms which link divorce and child survival.     

The socio-cultural context of child marriage in a Bangladeshi village

This article focuses on the reasons for child marriage in a Bangladeshi village. Although the mean age of marriage for women in Bangladesh is currently 20.2, nearly half of all girls are married before the age of 18. In Bangladesh, female sexuality is controlled through early marriage and the custom of purdah , which limits the social interactions between men and women. The methodology of this research was participant observation, supplemented by questionnaires, discussions, interviews and the construction of case studies. The study was conducted in a village in Bangladesh, and looked at why the rural people of Bangladesh marry off their daughters at an early age, whether they think that they will profit from it, and how. Cost-benefit analysis in exchange theory provides the theoretical framework. This study finds that child marriage occurs as a result of the profit-making motive of the people of Bangladesh, despite the huge costs to the individuals involved, the local community and society as a whole.     

Poverty, Social Exclusion and the Politics of Disability: Care as a Social Good and the Expenditure of Social Capital in Chuadanga, Bangladesh

People labelled with disabilities in Chuadanga, Bangladesh, are denied equitable access to social networks and formal services. In terms both of funding future formal service programmes and of designing community‐based outreach programmes, this lack of access is not a simple reflection of one's impairment but a facet of the social exclusion and stigma that is culturally ascribed to disability in Chuadanga. We utilize a social model to focus on the cultural processes initiated by the onset of illness or impairment. Our participants are drawn from four types of diagnosed disability: blindness, orthopaedic impairment, hearing impairment and mental disorder. Although this inquiry is in line with Daly's focus on how future spending on formal services to promote care and equity in Europe can be helped by searching out information that is often ignored, the particular focus of this study is Chuadanga and the research questions incorporate a disability studies perspective. The authors consider care as a social good and an expenditure of social capital, in reviewing findings from a recent empirical study of disability and employment in the Bangladesh district of Chuadanga. Regardless of disability, poverty can be a morally and socially devastating ordeal. However, the authors conclude that the added loss of social solidarity and equitable access, due to the social exclusion and stigma of disability for the families concerned, make it statistically far less likely that they will access formal services or be able to escape poverty.     

The effect of child mortality experience on subsequent fertility: in Pakistan and Bangladesh

Summary This paper presents an empirical analysis of the effects, behavioural and biological, of child mortality experience on subsequent fertility in two South Asian Islamic nations. Data for the investigation came from retrospective pregnancy histories of 2,910 currently married women interviewed in the Pakistan National Impact Survey (1968-69) and from longitudinal vital registration data (1966-2070) of 5,236 women residing in a rural area of Bangladesh collected by the Cholera Research Laboratory. The aim of this study was to assess the importance of the child-replacement motivational response to child death experience after biological effects have been controlled adequately. A common approach employed previously has been to examine cumulative fertility according to child death experience. In Pakistan and Bangladesh, a consistently positive relationship was demonstrated between the number of children ever born and the number of child deaths. This method, however, did not exclude the inverse relationship, the influence of fertility on mortality, nor did it dissect out behavioural from biological effects. Utilizing a measure of subsequent fertility, live-birth-to-live-birth intervals, the study further illustrated another common pitfall. Since the risk of infant death, which leads to shorter birth intervals, is associated with the mother's reproductive history, women with child mortality experience are more likely to experience shorter intervals because of the biological effect of subsequent infant death. Behavioural influences may, therefore, be observed by considering only those birth intervals in which the first-born child survives to the end of the interval. With these limitations controlled, very few, if any, behavioural influences were noted in the Pakistan and Bangladesh data. Median birth intervals in Pakistan varied between 35-43 and 41-42 months, increasing with parity. Within each parity group, no consistent difference was observed between women with and without previous child loss. In Bangladesh, the median birth interval for all women with a surviving infant was 37-2 months. This was shortened to 24-31 months by an infant death. When intervals with infant deaths were excluded, little or no behavioural influence was detected among women of the same parity, but with varying levels of previous child loss. Even without behavioural effects, elimination of infant mortality in Bangladesh would reduce fertility by prolonging the average period of post-partum sterility. In the Bangladesh setting, however, the size of the effect was only about four per cent. This modest effect, more-over, was counterbalanced by an overall increase of net reproduction by seven per cent due to better survivorship of infants.