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Conference Paper

Techno-economic analysis of UMTS900 and UMTS2100 for rural connectivity in Tanzania Simba, Fatuma · 2012

Conference Paper

Cost-Effective Mobile Based Learning Content Delivery in Resources and Network Constrained Environments Simba, Fatuma · 2014

Journal Article, Peer Reviewed

Fatigue of sisal fibre reinforced composites: Constant-life diagrams and hysteresis loop capture Towo, Arnold · 2007

Journal Article, Peer Reviewed

High HIV Seroprevalence, Rectal STIs and Risky Sexual Behaviour in Men Who Have Sex with Men in Dar es Salaam and Tanga, Tanzania Ross, Michael W. · 2014

Conference Paper

The relationship of indigenous knowledge and technological innovation to poverty alleviation in Tanzania Mwantimwa, Kelefa · 2008

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Theses and Dissertations
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Recent Submissions

Access status: Open Access ,
The psychology of money
(University of Dar es Salaam, 2010)
James Morgan
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Access status: Open Access ,
The honour of Africa
(1965)
Mwalimu Julius K Nyerere
Access status: Metadata only ,
Swahili Muslim Publics and Postcolonial Experience. By Kai Kresse. African Expressive Culture Series. Bloomington: Indiana University Press. 2018, pp. xii+237 ISBN: 978-0-253-03753-4
(UTAFITI, 2019-06-30)
Ndaluka, Thomas
Access status: Metadata only ,
Quality 4.0 conceptualisation: an emerging quality management concept for manufacturing industries
(Emerald, 2023-01-26)
Maganga, Deusdedith Pastory
;
Taifa, Ismail W.R.
Purpose Quality 4.0 refers to a modern quality management approach that uses Industry 4.0 technologies, integration and digitalisation. This research explores the current understandings of Quality 4.0 in various publications. The focus is on Quality 4.0 concepts or explanations, available models, motivation and readiness factors for adoption, enablers and technologies that can be leveraged. Design/methodology/approach A qualitative approach was deployed to collect the findings. This paper employs bibliometric, scientometric and visual analytic tools to identify and analyse articles from Scopus, Web of Science (WOS), Google Scholar databases and other sources such as ScienceDirect and Taylor and Francis. Findings The bibliometric results revealed that Quality 4.0 publications began in 2016 and increased dramatically in 2020 and 2021, with India leading the way while scientometric analysis found no clear definition of Quality 4.0 hitherto. However, several authors have defined the concept of Quality 4.0, arguing that it is characterised by digitalisation and integration, Industry 4.0 technologies applications and big data management. Some of the Quality 4.0 models published in the theoretical underpinnings include total quality management (TQM) in the basis of Industry 4.0 model, the European Foundation for quality management model, Quality 4.0 model combining operational technology (OT) and information technology (IT) through digital transformation and the LSN Research eleven axes of Quality 4.0 model. The research highlights key enablers of Quality 4.0 adoption, such as enabling technologies, big data capability, skilled and competent workers, collaboration and leadership support. Research limitations/implications The findings can benefit Quality 4.0 researchers and practitioners on the available Quality 4.0 models, motivation and readiness factors for Quality 4.0 adoption, enablers and leveraged technologies in Quality 4.0. Originality/value This study attempted to explore the current understandings of Quality 4.0 concepts to sediment these emerging quality management concepts for manufacturing industries.
Access status: Metadata only ,
Design and simulation of hybrid renewable energy sources for Mwanza International Airport
(University of Dar es Salaam, 2022-10-21)
Minja, Monyiaichi Nelson
;
Mushi, Aviti Thadei
This paper presents the design and simulation of hybrid renewable energy sources utilizing both solar energy and wind energy sources with a backup generator. The demand for reliable electric energy in support of investments in large social and economic developmental activities such as airport operations has been an agenda worldwide. In Tanzania, Mwanza International Airport (MIA) consumes about 18 MVA annually of electricity power in support of its operations. About 78–80% of the world commercial energy comes from fossil fuels. Non-renewable fuels apart from other negative effects contribute to the global warming through destruction of ozone layer. Additionally, most of centralized conventional methods of generation require transmission systems, add complexity of the system and poor power quality. Therefore, the proposal to use a mixed coupled hybrid renewable energy source to power the airport is necessary. The considered energy mix are solar photovoltaic, wind, diesel generator and a battery. There is an average solar irradiation of 5.38 kWh/m2 and wind speed average of 4.20 m/s that is able to be converted to electricity by installation of 10 kW wind turbine. The intermittency is taken care of by the diesel generator and the battery designed at 40 kVA and 400 Ah respectively. The project will be in operational for a period of 25 years hence its costs are reasonable and the justification is the potential of the estimated energy. Some mathematical computations were performed and, in the end simulation results displayed different techno-economic HRES configurations. The complete design of the selected system would include 78.48 kW PV system comprising 314 pieces of 200 W poly-crystalline modules, 608 batteries of 83.4 Ah, 12V rating, load following dispatch strategy, 140 kVA diesel generator, and 41.64kVA bidirectional converter. The net present cost of the selected design was $357,780.8, cost of energy $0.93/kW, and minimum renewable fraction of 40.2%.