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Search Results: 1 - 10 of 2554 matches for " Mahfuza Islam "
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Influence of Socio-Demographic Variables on Fertility in Bangladesh: Application of Path Model Analysis
Towfiqua Mahfuza Islam
Pakistan Journal of Social Sciences , 2012,
Abstract: This study seeks to examine the effects of some selected socio-economic and demographic variables on fertility using a well-known multivariate technique named path model analysis. The data are from 2004 Bangladesh Demographic and Health Survey (BDHS). This study argues that for both cohorts (i.e., aged below 30 years and aged 30+ years) women s education, age at first marriage and length of breast feeding are found to have significant direct negative effects, while the place of residence and the number of dead children have significant direct positive effects on the number of children ever born. Fetal loss appears to have a significant direct positive effect on fertility in Bangladesh. Based on the finding of this study, it may be suggested that attention should be focused on the need for providing educational facilities in particularly among women in rural areas in order to decline the level of fertility in Bangladesh.
An Approach of Improving Student’s Academic Performance by using K-means clustering algorithm and Decision tree
Hedayetul Islam Shovon,Mahfuza Haque
International Journal of Advanced Computer Sciences and Applications , 2012,
Abstract: Improving student’s academic performance is not an easy task for the academic community of higher learning. The academic performance of engineering and science students during their first year at university is a turning point in their educational path and usually encroaches on their General Point Average (GPA) in a decisive manner. The students evaluation factors like class quizzes mid and final exam assignment lab -work are studied. It is recommended that all these correlated information should be conveyed to the class teacher before the conduction of final exam. This study will help the teachers to reduce the drop out ratio to a significant level and improve the performance of students. In this paper, we present a hybrid procedure based on Decision Tree of Data mining method and Data Clustering that enables academicians to predict student’s GPA and based on that instructor can take necessary step to improve student academic performance
Population Change, Health, Environment and Development: An Interrelationship
Ismail Tareque,Mostafizur Rahman,Towfiqua Mahfuza Islam
Environmental Research Journal , 2012, DOI: 10.3923/erj.2012.75.80
Abstract: Attempts have been made to investigate the interrelationship among population change, health, environment and development in global level using secondary data from WHO and United Nations. USA (for Index of Health facilities (IH) and Environment (IE)) and Switzerland (for Index of Development (ID) and Quality of Life (IQL)) were at the top ranking position in 1990 but in 2000 they came down to 2nd and 3rd position. Cross tabulation analysis reveals all the indices are significantly associated with one another in both the years. With respect to quality of life using stepwise regression analysis, results shows that ID and IH are at first and second step and same for both the years. However, at the third step they are different. The path analysis also indicates that quality of life improved when health facilities increased but the quality of life decreased with increase in population in both the years.
An Approach of Improving Students Academic Performance by using k means clustering algorithm and Decision tree
Md. Hedayetul Islam Shovon,Mahfuza Haque
Computer Science , 2012,
Abstract: Improving students academic performance is not an easy task for the academic community of higher learning. The academic performance of engineering and science students during their first year at university is a turning point in their educational path and usually encroaches on their General Point Average,GPA in a decisive manner. The students evaluation factors like class quizzes mid and final exam assignment lab work are studied. It is recommended that all these correlated information should be conveyed to the class teacher before the conduction of final exam. This study will help the teachers to reduce the drop out ratio to a significant level and improve the performance of students. In this paper, we present a hybrid procedure based on Decision Tree of Data mining method and Data Clustering that enables academicians to predict students GPA and based on that instructor can take necessary step to improve student academic performance.
Mathematical Modeling of Women Empowerment in Bangladesh
Golam Mostofa,Ismail Tareque,Morshedul Haque,Towfiqua Mahfuza Islam
Research Journal of Applied Sciences , 2012,
Abstract: The aim of the present study is to estimate the women empowerment index value in Bangladesh since, women s empowerment is a matter of basic human rights which has during the last decade become a panacea for third world development. For this purpose, BDHS-2004 data have been used which reveals that empowerment level of women increases with age except the age group 45-49. Moreover, a mathematical model has been fitted to the mean score of women empowerment index which shows that women empowerment index follows a quadratic polynomial model.
Effects of Neem Leaf Dust and a Commercial Formulation of a Neem Compound on the Longevity, Fecundity and Ovarian Development of the Melon Fly, Bactrocera cucurbitae (Coquillett) and the Oriental Fruit Fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)
Mahfuza Khan,M. Aftab Hossain,M. Saidul Islam
Pakistan Journal of Biological Sciences , 2007,
Abstract: Neem leaf dust and a commercial formulation of neem were tested on adult Bactrocera cucurbitae (Coquillett) and Bactrocera dorsalis (Hendel) to determine their effects on the longevity, fecundity and ovarian development. Different combinations of neem leaf dust and a commercial formulation of a neem compound incorporated with sugar solution and adult rearing diets were tested. The Laboratory tests showed that ingestion of neem can significantly reduced the longevity and fertility of both the fly species. Significantly fewer pupae were collected from adults fed on laboratory rearing diet and nimbicidine as water source. Effect of neem treatment on the pupation and subsequent adult emergence of late-instar larvae was negligible. Microscopic observation indicated that the decreased fecundity was due to the block of ovarian development. Experimental results confirmed that neem can be effectively used as a safe alternative insecticide for the control of Bactrocera species.
Design and Analysis of Different Types of Rotors for Pico-Turbine  [PDF]
Samia Tabassum, Mashudur Rahaman, Muhammad Shahriar Bashar, Saidul Islam, Afrina Sharmin, Abdullah Yousuf Imam, Azizul Hoque, Nahid Mahbub, Sayeda Khatun, Mahfuza Khanam
Smart Grid and Renewable Energy (SGRE) , 2015, DOI: 10.4236/sgre.2015.66013
Abstract: Small-scale vertical axis wind turbine (VAWT) rotor is developed for use in areas lacking adequate energy infrastructure. The materials and methods of construction are selected to minimize cost as much as possible. The paper describes the design of different kinds of vertical axis wind turbine rotors having different number of blades and twist angle. The aim of the work is to study the influence of the different designs on rotational speed and power of rotor in different wind speed.
Amelioration of Salinity Stress in Maize Seed Germination and Seedling Growth Attributes through Seed Priming  [PDF]
Lucky Akter, Oli Ahmed Fakir, Md. Khairul Alam, Mahbub Ul Islam, Priyanka Chakraborti, Md. Jahangir Alam, Md. Harunur Rashid, Mahfuza Begum, Md. Abdul Kader
Open Journal of Soil Science (OJSS) , 2018, DOI: 10.4236/ojss.2018.85011
Abstract: Germination of seeds and growth of seedling respond to seed priming as priming can guard the damage of salinity stress. A study conducted in the net house of the Department of Agronomy, BAU, Mymensingh during the period from November 2012 to April 2013 investigated the ameliorative effect of seed priming on seed germination and seedling attributes of maize under various salinity stress conditions. The experiment consisted of five seed priming and four salinity levels (NaCl) and laid out in a Completely Randomized Design (CRD) with three replications. Seed germination and seedling attributes of maize varied due to salinity stress and priming. The highest seed germination (95.7%) was recorded when no stress was imposed under hydropriming (48 hours). The germination of seeds performed even well (92.3%) when treated with hydropriming (48 hours) and NaCl@0.25 dS·m-1 which was followed by hydropriming (24 hours) under no salinity imposed and NaCl@0.25 dS·m-1 salinity. Hydropriming for 48 hours without salt stress performed the best on number of leaves seedling-1 (8), shoot length (28.2 cm), root length (14.5 cm), fresh weight (100.8 g) and dry weight of seedling (50.3 g). The germination and seedling growth parameters were reduced with the increase in salinity levels irrespective of priming while all seed priming treatments showed ameliorative effects. However, reduction in seed germination and seedling attributes were minimal with hydropriming for 48 hours. The results revealed that priming of maize seeds could be used for amelioration of salinity stress and hydropriming for 48 hours appeared as the best seed priming treatment.
Comparative Study of Raw and Boiled Silver Pomfret Fish from Coastal Area and Retail Market in Relation to Trace Metals and Proximate Composition
Roksana Huque,M. Kamruzzaman Munshi,Afifa Khatun,Mahfuza Islam,Afzal Hossain,Arzina Hossain,Shirin Akter,Jamiul Kabir,Yeasmin Nahar Jolly,Ashraful Islam
International Journal of Food Science , 2014, DOI: 10.1155/2014/826139
Abstract: Trace metals concentration and proximate composition of raw and boiled silver pomfret (Pampus argenteus) from coastal area and retail market were determined to gain the knowledge of the risk and benefits associated with indiscriminate consumption of marine fishes. The effects of cooking (boiling) on trace metal and proximate composition of silver pomfret fish were also investigated. Trace element results were determined by the Energy Dispersive X-ray Fluorescence (EDXRF) Spectrometer wherein fish samples from both areas exceeded the standard limits set by FAO/WHO for manganese, lead, cadmiumm and chromium and boiling has no significant effects on these three metal concentrations. Long-term intake of these contaminated fish samples can pose a health risk to humans who consume them. 1. Introduction Fish is a healthy food for most of the world’s population particularly developing countries in contrast to meat, poultry, and eggs. Fish provides comparatively cheap and readily available protein sources (about 15 to 20 percent) in addition to long chains of n-3 fatty acids, amino acids, vitamins, and minerals which contributes to healthier nutritional options for a balance dietary intake [1, 2]. Among the all fishes, marine fish are very rich sources of protein and various mineral components. The total content of minerals in raw flesh of marine fish is in the range of 0.6–1.5% of wet weight [3]. Trace metals are present in water from natural sources such as the rocks of the sea bed and also accumulated as a result of human activities such as emissions from industrial processes. These elements are taken up by marine fishes which are higher up the food chain. As a result, the concentrations of many elements including mercury, arsenic, lead, and cadmium in fish can be relatively high compared to other foods. Many of these metals such as iron, copper, cobalt, manganese, molybdenum, nickel, and zinc are essential trace elements and play important roles in biological systems. Meanwhile, mercury, lead, and cadmium are toxic, even in trace amounts [4]. Moreover, elevated concentration of manganese and nickel has been found to be toxic to aquatic organism [5, 6]. To monitor trace metals concentrations in the coastal environment, marine fishes have been widely used as bioindicators due to their wide range of distribution. Several studies have been carried out on metal pollution in different species of edible fish. Predominantly, fish toxicological and environmental studies have prompted interest in the determination of toxic elements in seafood [7–10]. According to the
Temperature Stimulation of Effective Value of Density of the Current of Semiconductor Solar Cells  [PDF]
Aliev Rayimjon, Ikromov Rustamjon Gulomjonovich, Alinazarova Mahfuza Alisherovna
Energy and Power Engineering (EPE) , 2019, DOI: 10.4236/epe.2019.112006
Abstract: Influence of temperature on effective value of a current density of a semiconductor solar cell is investigated. New equations for explanation of dependence of photovoltaic characteristics of solar cell from temperature are received.
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