Browsing BracU Faculty Publications by Title
Now showing items 566-585 of 665
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A single phase AC-AC boost converter with improved input power factor and THD
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011)A new circuit is proposed for single phase AC-AC conversion using Boost topology. Input Power factor, input current Total Harmonic Distortion (THD) and efficiency of the circuit are examined for the proposed circuit for ... -
A single phase buck-boost AC-AC converter with low input current THD and high input power factor
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011)Two new topologies of Buck-Boost single-phase ac-ac conversion are proposed. In one of the circuits a bi-directional switch with a single buck-boost inductor is used, whereas, in the other circuit a bi-directional switch ... -
A single phase SEPIC AC-DC converter with improved power factor and input current THD
(© 2016 IEEE, 2017-02-13)A new topology of single-phase SEPIC (Single Ended Primary Inductor Converter) AC-DC converter with low input current THD and high input power factor is proposed. Instead of using a single phase rectifier followed by a ... -
Socio-demographic characteristics and tobacco use among the adults in urban slums of Dhaka, Bangladesh
(© 2017 BioMed Central Ltd., 2017-05-05)Background: Use of tobacco has become one of the major causes of premature deaths in most developing countries, including Bangladesh. The poorest and most disadvantaged populations, such as those living in slums, are ... -
Socio-economic inequality of chronic non-communicable diseases in Bangladesh
(© 2016 Public Library of Science, 2016-11)Introduction Chronic non-communicable diseases (NCDs) are a major public health challenge, and undermine social and economic development in much of the developing world, including Bangladesh. Epidemiologic evidence on the ... -
Socio-economic vulnerability and neo-liberalism lessons from Bangladesh
(© 2009 SAGE Publications, 2009-11)Based on a case study of an export-oriented Bangladeshi garment company, this article shows how hierarchies of vulnerability have developed in the process of global integration of Bangladesh’s garment industry. Situating ... -
Socio-economic vulnerability and neo-liberalism: lessons from Bangladesh
(© 2009, Sage Publication, UK, 2009-11-01)Based on a case study of an export-oriented Bangladeshi garment company, this article shows how hierarchies of vulnerability have developed in the process of global integration of Bangladesh’s garment industry. Situating ... -
Software implementation of the Central Solar Battery Charging Station (CSBCS)
(© 2013 Institute of Electrical and Electronics Engineers Inc., 2013)Solar Battery Charging Station is the beginner's outline of the Central Solar Battery Charging Station which can be worn as an alternation of the complementary power source or electricity for assembling the ever-increasing ... -
Software test estimation tool: comparable with COCOMOII model
(© 2016 IEEE, 2016-12)This study illustrates an estimation tool for software test that provides the estimated time and the cost of any sort of software test project. There are different well-recognized estimation tools for software development ... -
Solar battery charging station and torque sensor based electrically assisted tricycle
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012)Bangladesh is witnessing an increase in solar electricity generation as part of an ambitious plan to boost the provision of power from renewable energy sources. Solar energy is being harnessed and converted to electrical ... -
Solar electric ambulance van unfolding medical emergencies of rural Bangladesh
(© 2016 IEEE, 2016-10)Rickshaws are a key mode of transportation in Bangladesh. When it was changed to electrically-assisted ones, it achieved prevalence but was soon banned because of overconsumption of power from the national grid. In ... -
Solar home system components qualification testing procedure and its effect in bangladesh perspective
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012)Bangladesh has seen a proliferation of Solar Home System (SHS) in Off-grid areas as a substitute for grid electricity. Along with the demand, supply of low quality SHS components is increasing resulting in decreased SHS ... -
Some analytical models of anisotropic strange stars
(© Springer Science+Business Media Dordrecht 2015, 2016)Over the years of the concept of local isotropy has become a too stringent condition in modeling relativistic self-gravitating objects. Taking local anisotropy into consideration, in this work, some analytical models of ... -
Some new solutions of the (1+1)-dimensional PDE via the improved (G ′/ G)-expansion method
(© 2014 American Institute of Physics Inc., 2014)In this article, an improved (G′/G)-expansion method is implemented for the simplified Modified Camassa-Holm (MCH) equation involving parameters, with an aim to construct many new traveling wave solutions. In this method, ... -
Some new solutions of the (3+1)-Dimensional Jimbo-Miwa equation via the improved (G'/G)-Expansion method
(© 2014 Eudoxus Press, LLC, 2014)The improved (G'/G)-expansion method is straightforward and effective mathematical tool for establishing exact traveling wave solutions of different nonlinear partial differential equations which arise in engineering ... -
Some new traveling wave solutions of the nonlinear reaction diffusion equation by using the improved (G′/G)-expansion method
(© 2012 Mathematical Problems in Engineering, 2012)We construct new exact traveling wave solutions involving free parameters of the nonlinear reaction diffusion equation by using the improved (G ′ /G)-expansion method. The second-order linear ordinary differential equation ... -
Some new Wyman–Leibovitz–Adler type static relativistic charged anisotropic fluid spheres compatible to self-bound stellar modeling
(© The Author(s) 2015. This article is published with open access at Springerlink.com, 2015)In this work some families of relativistic anisotropic charged fluid spheres have been obtained by solving the Einstein–Maxwell field equations with a preferred form of one of the metric potentials, and suitable forms of ... -
Square diaphragm CMUT capacitance calculation using a new deflection shape function
(© 2011 Hindawi Publishing Corporation, 2011)A new highly accurate closed-form capacitance calculation model has been developed to calculate the capacitance of capacitive micromachined ultrasonic transducers (CMUTs) built with square diaphragms. The model has been ... -
Squaring the circle: EFA in the post-2015 global agenda
(© 2014 Elsevier Ltd., 2014-11)The Millennium Development Goals (MDGs) and Education for All (EFA) initiative have influenced educational development in poor countries both positively and negatively. From the perspective of Bangladesh, international ... -
Stakeholder insights for effective higher education management
(© 2008 published jointly by BAFED and BU-IED, 2008)This paper looks at human development in higher education through the lens of its users (the alumni). Tertiary education in Bangladesh has recorded over a five-fold growth since its birth in 1971. Yet, the participation ...