Browsing Electrical Engineering by Issue Date
Now showing items 1-18 of 18
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K-Maps: a visual tool for systematic design of combinational circuits using multiplexers
(University of Botswana, 1998)One of the application areas of digital multiplexers is in implementation of logic equations. Truth tables can be used as a design tool, but they become very limited when design details are explored.It will be shown in ... -
High definition television:-the TV system of the future
(University of Botswana, 1998)This paper describes the fundamental principles of production and accomplishment of High Definition Television (HDTV)-the television system of the future.It looks at the parameters of high definition television (HDTV),and ... -
Essential elements of telephone call charging systems
(University of Botswana, 1998)There are many instances where a telephone call charge needs to be avaialable immediately after a call is made. Usually, for a fee a telecommunication provider can provide call charge for a particular call. Call charging ... -
Improvement of AC electronmagnet performance
(University of Botswana, 1999)Electromagnets are essentials for the operation of relays, contactors and other electromagnetic apparatus and take part in driving control and protective circuits of industrial processes and power systems. Performance of ... -
Educatin and training of engineers: a case study
(University of Botswana, 2000)Engineering and training play an important role in the technical, economic and social progress of society.A number of factors influence the education and training of engineers, from the nature and form of curricular to ... -
An algorithm for the determination of feedback coefficients of a state variable feedback control system
(University of Botswana, http://www.ub.bw, 2000)This paper describes a new method of determining the feedback coefficients in a state variable feedback system, given the closed loop transfer function, making use of the transfer function between different and relevant ... -
Implementing the LASO model: development of a pilot online course at the Faculty of Engineering and Technology, University of Botswana
(Emerald http://www.emeraldinsight.com, 2004)This paper reports on the process of developing a blended online engineering course at the Faculty of Engineering and Technology of the University of Botswana. It presents the actual development process in terms of its ... -
Self-clocked sequential circuits: a design example
(University of Botswana, 2004)Asynchronous sequential circuits offer improved speed of operation when compared to their synchronous counterparts. However, the standard methods of asynchronous design require careful examination of the flow table for ... -
Design of automatic power factor control system
(University of Botswana, www.ub.bw, 2004)Maintenance of the proper power factor is a very important matter for the industry and for the economy of any country. A study of the power factor value for a number of industrial plants in Botswana shows that they operate ... -
Accessing applications from multiple file servers in a computer network
(Science Publications http://www.doaj.org/doaj?func=abstract&id=116222, 2005)This study proposes a technique of accessing applications from multiple file servers in a computer network that caters for a large user community. The technique is a step towards creating a computer network system that is ... -
Analysis of dielectric loaded resonator dual-mode filter
(University of Botswana, 2006)A dielectric loaded rectangular cavity for the design and realisation of different elliptic function filters topologies is presented. The 3-D Transmission Linee modelling method (TLM) is applied to the analysis of the ... -
Implementation of a single phasing protective circuit for three phase induction motors
(University of Botswana, 2006)Analysis of the induction motor failures show, that a significant number of motors are damaged due to single phasing.At such conditions the current increases rapidly and the motor is subjected to burnouts and consequently ... -
Application of the method of D-partitioning for stability of control systems with variable parameters
(University of Botswana, www.ub.bw, 2007)By the turn of the century, Botswana will be 34 years old as an independent nation. Reflecting on the past, is a background of tremendous achievements from a socio-economic development perspective. The achievements could ... -
Development of a mathematical model for reactive power transmission costs in electric power systems
(IEEE http://www.saiee.org.za/publications/2008/sept/99-3-4.pdf, 2008)The paper gives detailed analyses to help determine the increase in production costs due to the transmission of reactive power. On the basis of that and with due consideration to the cost of VARS compensation equipment, ... -
Cyclic stress–strain behavior of conventional grain and ultrafine grain nickel under biaxial straining
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S135964620800064X, 2008)Results are presented on the effects of biaxial straining on the cyclic stress–strain response of ultrafine grain nickel (grain size 260 nm) and conventional grain nickel (grain size 50 lm) over a range of effective ... -
Information system based implementation of Semester-to-Semester progression at University of Botswana
(http://ijedict.dec.uwi.edu/viewarticle.php?id=555., 2008)In August 2002, the University of Botswana changed from a yearlong to a semester based academic system. However, the progression regulations were not be fully implemented on the information system mainly due to problems ... -
Assessment of ICT-based course delivery for mechanical engineering students: a case study
(http://www.ais.up.ac.za/digi/docs/oladiran_paper.pdf, 2009)During the first semester of 2007/2008 academic session at the University of Botswana (UB), some mechanical engineering courses were delivered using a blended method i.e. online resource (eLearning) and traditional face to ... -
The burden of HIV-related admissions and mortality at Princess Marina Hospital, Botswana in 2000: a pre-combination antiretroviral therapy era
(Scientific Research, www.scirp.org/, 2017-03-31)Background: human immune virus and acquired immunodeficiency syndrome (HIV/AIDS) have been recognized in Botswana for the last three decades, however, combination anti-retroviral therapy (cART) was only introduced after ...