Alexander Ngenzi

Alexander Ngenzi
University of Rwanda · COMPUTER AND SOFTWARE ENGINEERING

Doctor of Philosophy in Computer Science Engineering

About

19
Publications
15,530
Reads
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63
Citations
Citations since 2016
16 Research Items
60 Citations
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2016201720182019202020212022051015

Publications

Publications (19)
Conference Paper
Full-text available
Agriculture contributes to the economies of developing countries. Tea is the most popular crop in Kenya as it contributes majorly to her economy. Among the various stages of processing tea, fermentation is the most important as it determines the final quality of the processed tea. Presently, the process of monitoring is done manually by tea tasters...
Article
Full-text available
Tea (Camellia sinensis) is one of the most consumed drinks across the world. Based on processing techniques, there are more than 15 000 categories of tea, but the main categories include yellow tea, Oolong tea, Illex tea, black tea, matcha tea, green tea, and sencha tea, among others. Black tea is the most popular among the categories worldwide. Du...
Article
Full-text available
Tea is currently the most popular beverage after water. Tea contributes to the livelihood of more than 10 million people globally. There are several categories of tea, but black tea is the most popular, accounting for about 78% of total tea consumption. Processing of black tea involves the following steps: plucking, withering, crushing, tearing and...
Article
Full-text available
Previous studies have considered scheduling schemes for Internet of Things (IoT)-based healthcare systems like First Come First Served (FCFS), and Shortest Job First (SJF). However, these scheduling schemes have limitations that range from large requests starving short requests, process starvation that results in long time to complete if short proc...
Conference Paper
Full-text available
Tea (Camellia Sinensis) is among the most popular crops worldwide. The crop has been cultivated for more than 300 years and is a source of various categories of tea which include: green, black, yellow, white Oolong, ilex, among others. Among these categories of tea, black tea is the most popular with an estimated consumption of 78% of the total tea...
Article
Full-text available
Abstract: Fire monitoring in local urban markets within East Africa (EA) has been seriously neglected for a long time. This has culminated in a severe destruction of life and property worth millions.These rampant fires are attributed to electrical short circuits, fuel spillages, etc. Previous research proposes single smoke detectors. However, they...
Article
Full-text available
Abstract: Tea is one of the most popular beverages in the world, and its processing involves a number of steps which includes fermentation. Tea fermentation is the most important step in determining the quality of tea. Currently, optimum fermentation of tea is detected by tasters using any of the following methods: monitoring change in color of tea...
Article
Modern hand held devices such as smart phones and Personal Digital Assistant (PDAs) have become increasingly powerful in the recent years. Dramatic breakthroughs in processing power which has evolved over time along with the number of extra features included in these devices have opened doors to a wide range of commercial possibilities. The incorpo...
Article
Full-text available
Modern hand held devices such as smart phones and Personal Digital Assistant (PDAs) have become increasingly powerful in the recent years. Dramatic breakthroughs in processing power which has evolved over time along with the number of extra features included in these devices have opened doors to a wide range of commercial possibilities. The incorpo...
Article
Full-text available
An effective resource management is one of the critical success factors for precise virtualization process in cloud computing in presence of dynamic demands of the user. After reviewing the existing research work towards resource management in cloud, it was found that there is still a large scope of enhancement. The existing techniques are found no...
Article
Full-text available
An effective resource management is one of the critical success factors for precise virtualization process in cloud computing in presence of dynamic demands of the user. After reviewing the existing research work towards resource management in cloud, it was found that there is still a large scope of enhancement. The existing techniques are found no...
Article
Full-text available
Live Migration is one of the essential operations that require more attention to addressing its high variability problems with virtual machines. We review the existing techniques of resource management to find that there are less modeling to solve this problem. The present paper introduces a novel framework that mainly targets to achieve a computat...
Article
Full-text available
Creating enough space for resources by minimizing number of servers in datacenters is a prerequisite for server consolidation. This requirement can be characterized by Bin packing algorithm, which is known to be NP hard problem. There are different categories of bin packing problem like First fit decreasing, Best Fit, and load balancing techniques....
Article
Full-text available
Threats in virtual machines have been a major challenge in most cloud data centers. The attack/ threat begins from physical machines (hosts) and spreads to all virtual machines(guests). As a result, the virtual machines get infected rapidly by recursive growth of the seeds/ nodes generated in a random manner. This paper proposes threat modeling bas...
Article
Full-text available
Cloud resource management has been a key factor for the cloud datacenters development. Many cloud datacenters have problems in understanding and implementing the techniques to manage, allocate and migrate the resources in their premises. The consequences of improper resource management may result into underutilized and wastage of resources which ma...
Article
Full-text available
As more and more information on individuals and companies are placed in the cloud, concerns are beginning to grow about just how safe an environment it is. It is better to prevent security threats before they enter into the systems and there is no way how this can be prevented without knowing where they come from. The issue of resource allocation a...

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