Browsing by Author "Luhanga, Matthew L."
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Item Analutical Modeling of a Large Local Area Network – Part I: Internet raffic Characterization(College of Engineering and Technology, University of Dar es Salaam, 2008-07) Luhanga, Matthew L.; Cuthbert E.B.M., Amos,The goal of both IP network operators and the end users is to get the highest performance from the system for a given cost. This makes Performance a key criterion in the design, procurement, and use of computer and communication systems. In order to address problems associated with performance degradation of operational communications systems, over the last decade, traffic engineering techniques have emerged in an attempt to optimize communication systems' performance and ensure more efficient use of their resources. One of these techniques is analytical modeling.Item The Assessment of Vulnerability and Adaptation to Climate Change Impacts in Tanzania(Centre for Energy, Environment, Science and Technology, 1998, 1998) Mwandosya, Mark J.; Nyenzi, Buruhani Salum; Luhanga, Matthew L.Item The Courage for Change. Re-Engineering the University of Dar es Salaam(Dar es Salaam University Press (December 31, 2009), 2009-12-31) Luhanga, Matthew L.Item Energy and Development in Tanzania: Issues and Perspectives", Energy Policy(Elsevier, 1993-05) Mwandosya, Mark J.; Luhanga, Matthew L.Although per capita consumption of commercial fuels in Tanzania remains low, the energy sector faces a number of difficult challenges. As in most other countries, energy policy formulation takes place in the context of great uncertainty, being the result of pressures exerted by conflicting interests, particularly with respect to fuel pricing. The Tanzania National Energy Policy was recently adopted after a process of studies and public hearings which spanned more than a decade. One of its principal goals is to reduce dependence upon imported petroleum fuels. The reliability of the electricity system and the financial status of the electric utility are also important issues. Despite the fact that many previous authors have emphasized woodfuel problems, at present the problem is limited to localized shortages. One of the most important obstacles facing the energy sector is the shortage of skilled personnel necessary to operate the sector.Item Energy planning and wood balances(1990-05) Hosier, Richard H.; Boberg, Jill; Luhanga, Matthew L.; Mwandosya, Mark J.Woodfuel balances are commonly used by energy planners in developing countries to determine the adequacy of woodfuel resources. Recently, critics have argued that wood balances are misleading in their simplicity, exaggerating both the severity of the woodfuel shortage and the need for planned interventions to solve that problem. This paper examines four different wood balances developed for Tanzania. While the four studies all indicate that areas with miombo woodlands are in the greatest wood surplus, the specific estimates for any given region may differ widely. Despite their shortcomings, energy planners need woodfuel balances to give an impression of the adequacy of woodfuel resources. However, if energy planning is to have any effect, these balances must represent the beginning, and not the end result, of the planning process. Planners must follow the wood-energy balance analysis with work utilizing local people to solve local problems.Item Energy resources, flows, and end-uses in Tanzania(Dar es Salaam University Press, 1983, 1983) Mwandosya, Mark J.; Luhanga, Matthew L.Item Environmental Protection and Sustainable Development, Centre Technology(Centre for Energy, Environment, Science, and Technology, 1996, 1996) Mwandosya, Mark J.; Luhanga, Matthew L.; Mugurus, Eric K.Item Fundamentals of Control Engineering(Dar es Salaam University Press, 1999) Mwandosya, Mark J.; Luhanga, Matthew L.Item Future Energy Development in Tanzania: The Energy Costs of Urbanization(1993-05) Hosier, Richard H.; Mwandosya, Mark J.; Luhanga, Matthew L.This paper utilizes the detailed energy balance data developed as part of the Tanzania Urban Energy Project to examine future energy use in Tanzania. The energy costs of urbanization are shown to be quite substantial. National energy balances demonstrate that the urban areas make up a large share of the consumption of all fuels except woodfuel. As urbanization continues into the future, it will be accompanied by dramatic increases in the consumption of petroleum fuels, electricity and charcoal. For example, using base case or business as usual assumptions, over a planning period stretching from 1990 to 2010, every 1% increase in the level of urbanization can be expected to lead to a 12% increase in electricity consumption, a 14% increase in the consumption of all petroleum fuels and a 14% increase in the consumption of charcoal. Finally, the paper examines different energy policy options which are consistent with the stated national energy policy. After the examination of a set of ambitious policy efforts, a set of feasible policies are tested and shown to have a significant impact on the goals of improving efficiency, obtaining the desirable energy consumption profile and conserving indigenous woodfuel resources.Item Higher Education Reforms in Africa: The University of Dar es Salaam Experience(Michigan State University Press, 2003, 2003) Luhanga, Matthew L.Item Packet Error Probability for Diversity Systems in Slow Rayleigh Fading and Gaussian Noise(1986-07) Luhanga, Matthew L.Analytical results on packet error probability for noncoherent frequency-shift-keying (NCFSK) and differential phase-shift-keying (DPSK) systems with diversity reception operating over slow Rayleigh fading channels with Gaussian noise are derived. Expressions obtained are applicable to two linear combining schemes: selection combining and maximal-ratio combining.Item Pollution in the Manufacturing Sector in Tanzania(Centre for Energy, Environment, Science & Technology (CEEST), 1995) Mwandosya, Mark J.; Luhanga, Matthew L.Item A Pyramid Algorithm For The Haar Discrete Wavelet Packet Transform(Bachudo Science Co. Ltd, 2013-10) Luhanga, Edith T.; Luhanga, Matthew L.One area of application of the discrete wavelet transform (DWT) has been the detection and classification of physiological signals such as electroencephalography (EEG) signals. Anomalies in EEGs yield very low frequency signals which are ideal for analysis using the DWT. Anomalies in mechanical systems yield high frequency signals. The structure of the DWT makes it an un-ideal tool for the analysis of such signals. Such signals are, however, ideal for analysis using the wavelet packet transform (WPT) in which Mallat’s pyramid algorithm is applied to the multiresolution analysis (MRA) of both the approximation and detail subspaces of a signal. As a contribution to the computer-aided signal processing of non-stationary signals, this paper develops a pyramid algorithm for the discrete wavelet packet transform (DWPT) from two-scale relations for wavelet packets. The algorithm is used in the derivation of the fast Haar discrete wavelet packet transform (FHDWPT) and its inverse. It is found out that the FHDWPT is computationally as efficient as the fast Fourier transform (FFT).Item Strategic planning and higher education management in Africa: the University of Dar es Salaam experience(Dar es Salaam University Press, 2000-01) Luhanga, Matthew L.; Mkude, Daniel; Mbwette, Daniel J.; Chijoriga, Marcelina M.; Ngirwa, Cleophace A.A book that aims to identify the core problems facing African universities and to examine the potential role of strategic planning in addressing them. It reviews global, regional and national development trends in higher education, and identifies problems within the areas of human resources, organisational culture, physical resources, municipal services, governance, financial resources, and quality and quantity of academic and professional outputs. The authors then provide examples from the University of Dar es Salaam's experience and transition programmes to demonstrate how the adoption of a strategic planning and management culture can address the principal common areas of concern. The book is organised into sections covering: higher education management, historical perspectives of planning at the University of Dar es Salaam; strategic planning in higher education institutions; the development of corporate strategic plans; development of the university's five-year rolling strategic plans; strategic planning and the catalysts of the University of Dar es Salaam's transformations; and strategic planning transformations; and strategic planning in African universities, constraints and prospects. The final section also presents experiences from eight other African universities which are known to have adopted strategic planning, and assesses how these universities are addressing core problems. Universities included in the study are Moi; Makerere; Ghana, Kwame Nkrumah; Zambia, Eduardo Mondlane, Botswana and Namibia.Item The Tanzanian Experience in Initiating And Sustaining Tertiary Education Reforms(Improving Education in Africa: Things That Work, 2003) Luhanga, Matthew L.A historical sketch on educational reforms at the University of Dar es Salaam is provided covering the initiation of the reforms, strategic planning and the implementation of the reforms and the strategic plan. Measures ensuring success in the transformation process are described.Item Telematics in Control Or Control in Telematics(1999) Luhanga, Matthew L.