Browsing by Author "Muhwezi, Lawrence"

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    Assessment of the Effects of Procurement Planning Processes on Performance of Construction Contracts in Local Governments in Uganda
    (Journal of Civil, Construction and Environmental Engineering, 2020) Muhwezi, Lawrence; Tumusime Musiime, Fred; Onyutha, Charles
    Procurement as one of the core functions of public sector agencies in Uganda has become a big matter of concern as expenditure on its processes have continued to be alarmingly high in government departments including local governments. This study assessed the effects of procurement processes on performance of construction contracts in Local Governments in Uganda. The study adopted a descriptive research design and used purposive sampling to sample 81 respondents. Data were collected using questionnaire and analyzed using SPSS software. The study revealed that poor procurement planning led to big budget deficits with a mean of 1.86 thus affecting performance of construction contracts to a very large extent. The study further revealed that funds for the construction contracts are not always released in time and this has a big effect on performance of construction contracts. The study concluded that procurement planning and contract monitoring and administration have a significant effect on the performance of construction contracts in District Local Governments in Uganda. The study recommended that Local Governments should adopt the developed model to control the procurement process and other anomalies in the award and management of construction contracts.
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    Evaluation Of Factors Influencing Performance of Building Construction Projects in Uganda: A Case Study of Masaka City
    (East African Nature and Science Organization, 2024-11-10) Hakizimana, Venust; Muhwezi, Lawrence; Acai, Joseph
    The construction industry has gained rapid growth for the past decade due to population growth resulting in housing and infrastructure demand. In Uganda, over twelve percent (12%) of the gross domestic product (GDP) is contributed by the building construction sector and is of great significance in the current economy. Despite this contribution to the sector, building construction fails due to performance issues as previously conducted studies have indicated and there are various reasons and factors which contribute to these performance issues. Therefore, there is a need to have a deeper understanding of the major factors attributing to this trend for better performance improvement. This study aimed to establish strategies to improve the performance of building construction projects in Uganda cities, a case study of Masaka city. The study employed a survey research design and targeted a population of 420 participants from which a sample of 201 respondents was selected. Data were collected using a questionnaire and interview guide. SPSS version 21 and Excel were used in data analysis. The following factors were established; cost factors, health and safety factors, time factors, quality factors productivity factors, project stakeholders’ factors, environmental factors and resource factors. The regression analysis conducted confirmed time factors, quality factors and cost factors to have evidence of a significant impact on the performance of building construction projects in Masaka city.  A framework for improving the performance of building construction projects was developed based on factors with significant impact. These findings highlight the need to prioritize these factors with significant impact when evaluating and managing building construction projects in Masaka City
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    Mathematical Modeling of Traffic Flow in Kampala City Using the Moving Observer Method
    (East African Journal of Interdisciplinary Studies, 2024) Okiza, Humphrey; Muhwezi, Lawrence; Okello, Joseph Omwonylee; Awichi, Richard Opaka; Nuwagaba, Savannah
    The purpose of the study was to investigate the variables affecting traffic flow in Kampala Central Business District (CBD), employing a leading into and out of the city which included traffic on Entebbe Road, Jinja road, Sir Apollo Kaggwa Road, Yusuf Lule and Wandegeya roads using the moving observer method. Regression analysis was done to identify the relationships between the variables, leading to the development of a predictive model for traffic flow. The study found out that the flow tends to increase as the day progresses and as well flow rate increases with increase in density. A mathematical model was generated which could be used to predict the traffic intensity on the road at a given day and time. The model shows that changing from weekdays to weekend, the flow decreases by about 29%, and as density increases by 1%, the flow also increases by 1.5% over time. The study recommends prioritizing public transportation improvement, establishment of out of city parking yards, utilizing the other various means of transport other than road and promoting non-motorized modes of transportation in order to reduce traffic density on the road and subsequently manage congestion
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    Water availability trends across water management zones in Uganda
    (Atmospheric Science Letters, 2021) Onyutha, Charles; Asiimwe, Arnold; Muhwezi, Lawrence; Mubialiwo, Ambrose
    This study assessed trends in gridded (0.25 0.25 ) Climate Forecast System Reanalysis (CFSR) precipitation, potential evapotranspiration (PET), and precipitation minus PET (PMP) across the four water management zones (WMZs) in Uganda including Kyoga, Victoria, Albert, and Upper Nile. The period considered was 1979–2013. Validation of CFSR datasets was conducted using precipitation observed at eight meteorological stations across the country. Observed precipitation trend direction was satisfactorily reproduced by CFSR data extracted at five out of eight stations. Negative (positive) values of longterm PMP mean were considered to indicate areas characterized by water scarcity (surplus). Areas with large positive PMP were confined to Lake Victoria and mountains such as Rwenzori and Elgon. The largest negative PMP values were in the arid and semi-arid areas of north and northeastern Uganda. The null hypothesis H0 (no trend) was rejected (p < 0.05) for increasing annual precipitation trends across the various WMZs except in the extreme eastern parts of the Upper Nile, Kyoga, and Victoria WMZs (or areas along the boundary of Uganda and Kenya). The H0 (no trend) was rejected (p < 0.05) for decreasing trends in annual PET over West Nile region of the Upper Nile, western parts of Victoria, and the Albert WMZs. For increasing trend in PMP, the H0 (no trend) was rejected (p < 0.05) across the various WMZs except around the Mount Elgon area. The study findings are relevant for planning of water resources management across the different WMZs in the country.