An AHP approach to systems development and implementation for improved sustainability
- Authors: Nkosi, Samkele N.
- Date: 2013-05-28
- Subjects: Software engineering management , Computer software development , Analytic Hierarchy Process , Computer-aided engineering
- Type: Mini-Dissertation
- Identifier: uj:7560 , http://hdl.handle.net/10210/8422
- Description: M.Ing. (Engineering Management) , Sustainable development is the buzz word of the twenty-first century and it is the prerogative of the modern organization to ensure that it keeps up with sustainable development initiatives in order to keep its products marketable. As such a need has arisen to assist OPSI Systems, an IT company that specializes in software development, in selecting appropriate algorithms, implementation architectures and business processes to implement in order to achieve improved sustainability in the development, deployment and usage of its software products. The Analytic Hierarchy Process (AHP) is the management tool of choice for this. Opsi Systems is an IT company that develops niche vehicle routing and scheduling software for the transport logistics industry. Opsi Systems' software products are typically used by distribution planners and managers to find the most efficient combinations of vehicles to use to transport goods, assignment of goods to vehicles, routes to take and stops to make along routes, in order to optimise the value-chain in the supply of products to customers. As a software development and support company, there are various documented methodologies that can be used to enhance Opsi Systems' own value-chain in delivering its software products to its clients. The Systems Development Life Cycle (SDLC) approach is used in the development of OPSI Systems' products and a lifecycle approach to product development is important in catering for sustainability in the software design process[3]. The main objective of OPSI systems software products is optimally realistic solution of the Vehicle Routing Problem (VRP), which is quite key for logistics and supply chain management companies to be able to conduct their business with minimal impact to the environment. The use of fewer vehicles and a reduction in the total distance travelled by those vehicles means lower fuel consumption and lower cost of business. IT integration also leaves less of a paper trail and thus electronic processing of orders is possible at a much reduced cost to the company and the environment than traditional paper based sign-off . The savings introduced by e cient solution of the VRP has a direct positive impact on sustainable development. As such research on the VRP is also an important component of this study.
- Full Text:
- Authors: Nkosi, Samkele N.
- Date: 2013-05-28
- Subjects: Software engineering management , Computer software development , Analytic Hierarchy Process , Computer-aided engineering
- Type: Mini-Dissertation
- Identifier: uj:7560 , http://hdl.handle.net/10210/8422
- Description: M.Ing. (Engineering Management) , Sustainable development is the buzz word of the twenty-first century and it is the prerogative of the modern organization to ensure that it keeps up with sustainable development initiatives in order to keep its products marketable. As such a need has arisen to assist OPSI Systems, an IT company that specializes in software development, in selecting appropriate algorithms, implementation architectures and business processes to implement in order to achieve improved sustainability in the development, deployment and usage of its software products. The Analytic Hierarchy Process (AHP) is the management tool of choice for this. Opsi Systems is an IT company that develops niche vehicle routing and scheduling software for the transport logistics industry. Opsi Systems' software products are typically used by distribution planners and managers to find the most efficient combinations of vehicles to use to transport goods, assignment of goods to vehicles, routes to take and stops to make along routes, in order to optimise the value-chain in the supply of products to customers. As a software development and support company, there are various documented methodologies that can be used to enhance Opsi Systems' own value-chain in delivering its software products to its clients. The Systems Development Life Cycle (SDLC) approach is used in the development of OPSI Systems' products and a lifecycle approach to product development is important in catering for sustainability in the software design process[3]. The main objective of OPSI systems software products is optimally realistic solution of the Vehicle Routing Problem (VRP), which is quite key for logistics and supply chain management companies to be able to conduct their business with minimal impact to the environment. The use of fewer vehicles and a reduction in the total distance travelled by those vehicles means lower fuel consumption and lower cost of business. IT integration also leaves less of a paper trail and thus electronic processing of orders is possible at a much reduced cost to the company and the environment than traditional paper based sign-off . The savings introduced by e cient solution of the VRP has a direct positive impact on sustainable development. As such research on the VRP is also an important component of this study.
- Full Text:
Implementation of industry 4.0 technologies in the mining industry – a case study
- Authors: Sishi, Michael Ntokozo
- Date: 2017
- Subjects: Mineral industries - Technological innovations , Industrial revolution , Mineral industries - Management , Computer-aided engineering
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/269861 , uj:28674
- Description: M.Phil. (Engineering Management) , Abstract; In modern mining, it is imperative to have a real-time flow of information between the enterprise level and shop floor systems. The gaps that exist between these spheres make it difficult for managers to have timely information for optimum decision making. A mining company needs instantaneous visibility on production, quality, cycle times, machine status, and other important operational variables to achieve optimum and effective operations. The flow of information only within various business systems in an organisation is not sufficient in today’s world. An organisation should be able to share some information with business partners such as suppliers and customers to gain competitive advantage. Tracking products from raw material status, through various stages of production, up to finished goods is pivotal for Product Lifecycle Management (PLM). A product should be smart enough to know such things about itself as constituents, recipe, time of manufacturing, production lines, machines, quality, and destination. This study investigates the possibilities, protocols, and benefits, of Industry 4.0 implementation in the mining sector. The key focus of this research includes the evaluation of the impact of Cyber Physical Systems (CPS), Internet of Things (IoT), Industrial IoT (IIoT), and Big Data at the Mine. With the implementation of Industry 4.0 technologies at a Mine, the integration of fragmented shop floor and the enterprise level systems enables seamless communication in delivering optimum operations. This research demonstrates Industry 4.0 technologies as the mechanisms for integrating business systems and processes. The methods researched are deployed using Software Development Lifecycle (SDLC) process at a uranium mining company in Namibia to integrate the manufacturing systems, plant systems, business partners’ systems, and SAP ERP. The results are thoroughly analysed and validated to introduce a smart Mine with real-time visibility of the overall mining status. The research further presents the results of integrated Mine architecture, reports, KPIs, and automated workflows. The results prove the viability of industry 4.0 with all teams having full visibility on integrated KPIs that drive cross-functional delivery. The operations teams, management teams, executives, and the CEO have real time visibility and control of all aspects of the facilities via real time data.
- Full Text:
- Authors: Sishi, Michael Ntokozo
- Date: 2017
- Subjects: Mineral industries - Technological innovations , Industrial revolution , Mineral industries - Management , Computer-aided engineering
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/269861 , uj:28674
- Description: M.Phil. (Engineering Management) , Abstract; In modern mining, it is imperative to have a real-time flow of information between the enterprise level and shop floor systems. The gaps that exist between these spheres make it difficult for managers to have timely information for optimum decision making. A mining company needs instantaneous visibility on production, quality, cycle times, machine status, and other important operational variables to achieve optimum and effective operations. The flow of information only within various business systems in an organisation is not sufficient in today’s world. An organisation should be able to share some information with business partners such as suppliers and customers to gain competitive advantage. Tracking products from raw material status, through various stages of production, up to finished goods is pivotal for Product Lifecycle Management (PLM). A product should be smart enough to know such things about itself as constituents, recipe, time of manufacturing, production lines, machines, quality, and destination. This study investigates the possibilities, protocols, and benefits, of Industry 4.0 implementation in the mining sector. The key focus of this research includes the evaluation of the impact of Cyber Physical Systems (CPS), Internet of Things (IoT), Industrial IoT (IIoT), and Big Data at the Mine. With the implementation of Industry 4.0 technologies at a Mine, the integration of fragmented shop floor and the enterprise level systems enables seamless communication in delivering optimum operations. This research demonstrates Industry 4.0 technologies as the mechanisms for integrating business systems and processes. The methods researched are deployed using Software Development Lifecycle (SDLC) process at a uranium mining company in Namibia to integrate the manufacturing systems, plant systems, business partners’ systems, and SAP ERP. The results are thoroughly analysed and validated to introduce a smart Mine with real-time visibility of the overall mining status. The research further presents the results of integrated Mine architecture, reports, KPIs, and automated workflows. The results prove the viability of industry 4.0 with all teams having full visibility on integrated KPIs that drive cross-functional delivery. The operations teams, management teams, executives, and the CEO have real time visibility and control of all aspects of the facilities via real time data.
- Full Text:
Computational intelligence technology for the generation of building layouts combined with multi-agent furniture placement
- Authors: Bijker, Jacobus Jan
- Date: 2012-11-02
- Subjects: Multiagent systems , Computational intelligence , Computer-aided engineering , Architectural design
- Type: Thesis
- Identifier: uj:7318 , http://hdl.handle.net/10210/8056
- Description: M.Sc. (Computer Science) , This dissertation presents a method for learning from existing building designs and generating new building layouts. Generating fully furnished building layouts could be very useful for video games or for assisting architects when designing new buildings. The core concern is to drastically reduce the workload required to design building layouts. The implemented prototype features a Computer Aided Design system, named CABuilD that allows users to design fully furnished multi-storey building layouts. Building layouts designed using CABuilD can be taught to an Artificial Immune System. The Artificial Immune System tracks information such as building layouts, room sizes and furniture layouts. Once building layouts has been taught to the artificial immune system, a generation algorithm can utilise the information in order to generate fully furnished building layouts. The generation algorithm that is presented allows fully furnished buildings to be generated from high-level information such as the number of rooms to include and a building perimeter. The presented algorithm differs from existing building generation methods in the following ways: Firstly existing methods either ignore building perimeters or assume a buildings perimeter is a rectangle. The presented method allows the user to specify a closed polygon as a building perimeter which will guide the generation of the building layout. Secondly existing generation methods tend to run from a set of rules. The implemented system learns from existing building layouts, effectively allowing it to generate different building types based on the building layouts that were taught to the system. Thirdly, the system generates both the building layout as well as the furniture within rooms. Existing systems only generate the building layout or the furniture, but not both. The prototype that was implemented as a proof of concept uses a number of biologically inspired techniques such as Ant algorithms, Particle Swarm Optimisation and Artificial Immune Systems. The system also employs multiple intelligent agents in order to furnished rooms. The prototype is capable of generating furnished building layouts in merely a few seconds, much faster than a human could design such a layout. Possible improvements and future work is presented at the end of the dissertation.
- Full Text:
- Authors: Bijker, Jacobus Jan
- Date: 2012-11-02
- Subjects: Multiagent systems , Computational intelligence , Computer-aided engineering , Architectural design
- Type: Thesis
- Identifier: uj:7318 , http://hdl.handle.net/10210/8056
- Description: M.Sc. (Computer Science) , This dissertation presents a method for learning from existing building designs and generating new building layouts. Generating fully furnished building layouts could be very useful for video games or for assisting architects when designing new buildings. The core concern is to drastically reduce the workload required to design building layouts. The implemented prototype features a Computer Aided Design system, named CABuilD that allows users to design fully furnished multi-storey building layouts. Building layouts designed using CABuilD can be taught to an Artificial Immune System. The Artificial Immune System tracks information such as building layouts, room sizes and furniture layouts. Once building layouts has been taught to the artificial immune system, a generation algorithm can utilise the information in order to generate fully furnished building layouts. The generation algorithm that is presented allows fully furnished buildings to be generated from high-level information such as the number of rooms to include and a building perimeter. The presented algorithm differs from existing building generation methods in the following ways: Firstly existing methods either ignore building perimeters or assume a buildings perimeter is a rectangle. The presented method allows the user to specify a closed polygon as a building perimeter which will guide the generation of the building layout. Secondly existing generation methods tend to run from a set of rules. The implemented system learns from existing building layouts, effectively allowing it to generate different building types based on the building layouts that were taught to the system. Thirdly, the system generates both the building layout as well as the furniture within rooms. Existing systems only generate the building layout or the furniture, but not both. The prototype that was implemented as a proof of concept uses a number of biologically inspired techniques such as Ant algorithms, Particle Swarm Optimisation and Artificial Immune Systems. The system also employs multiple intelligent agents in order to furnished rooms. The prototype is capable of generating furnished building layouts in merely a few seconds, much faster than a human could design such a layout. Possible improvements and future work is presented at the end of the dissertation.
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BiCMOS millimetre-wave active bandpass filter
- Authors: Chaturvedi, Saurabh
- Date: 2018
- Subjects: Bipolar integrated circuits , Computer-aided engineering , Radio frequency microelectromechanical systems , Wireless power transmission , Wireless communication systems
- Language: English
- Type: Doctoral (Thesis)
- Identifier: http://hdl.handle.net/10210/286034 , uj:30943
- Description: D.Ing. (Electrical and Electronic Engineering) , Abstract: The various available unlicensed frequency bands around 60 GHz make the millimetre-wave (mm-wave) spectrum relevant for high-speed wireless data transfer. The continuous development in communication technology has supported wireless communication systems with higher operating frequencies. Filters are key front-end components in these communication systems. In a radio frequency (RF) receiver of a communication system, a bandpass filter (BPF) is used to allow in-band signals and to attenuate out-of-band signals sufficiently. High-quality BPFs are essential for the improvement of the overall performance of an RF receiver. This research work entailed an investigation into mm-wave active BPFs with low loss, low noise and low power dissipation. The research showed that this could be achieved using a...
- Full Text:
- Authors: Chaturvedi, Saurabh
- Date: 2018
- Subjects: Bipolar integrated circuits , Computer-aided engineering , Radio frequency microelectromechanical systems , Wireless power transmission , Wireless communication systems
- Language: English
- Type: Doctoral (Thesis)
- Identifier: http://hdl.handle.net/10210/286034 , uj:30943
- Description: D.Ing. (Electrical and Electronic Engineering) , Abstract: The various available unlicensed frequency bands around 60 GHz make the millimetre-wave (mm-wave) spectrum relevant for high-speed wireless data transfer. The continuous development in communication technology has supported wireless communication systems with higher operating frequencies. Filters are key front-end components in these communication systems. In a radio frequency (RF) receiver of a communication system, a bandpass filter (BPF) is used to allow in-band signals and to attenuate out-of-band signals sufficiently. High-quality BPFs are essential for the improvement of the overall performance of an RF receiver. This research work entailed an investigation into mm-wave active BPFs with low loss, low noise and low power dissipation. The research showed that this could be achieved using a...
- Full Text:
Simulation of six phase induction machine using the Matlab/Simulink environment
- Ogunjuyigbe, A. S. O., Nnachi, A. F., Jimoh, Adisa A., Nicolae, Dan-Valentin
- Authors: Ogunjuyigbe, A. S. O. , Nnachi, A. F. , Jimoh, Adisa A. , Nicolae, Dan-Valentin
- Date: 2008
- Subjects: MATLAB , SIMULINK , Electric machinery , Converter simulations , Computer-aided engineering
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/18518 , uj:16010 , Citation: Ogunjuyigbe, A.S.O. et al. 2008. Simulation of six phase split winding induction machine using the MATLAB/SIMULINK environment. Journal for Electrical Enginnering, 8(3): 33-39
- Description: Abstract: Six-phase induction machine presents several benefits over their conventional three-phase counterpart. This paper thus presents the model and described in detail the simulation of a Six-phase split winding induction machine in a Matlab/Simulink environment. The Simulink model is built in such a flexible manner such that various variables of the machine can be accessed easily for further purposes such as control. Finally, simulation results showing free acceleration as well as dynamic response of the machine were presented for both direct ac supply and the PWM inverter voltage source.
- Full Text:
- Authors: Ogunjuyigbe, A. S. O. , Nnachi, A. F. , Jimoh, Adisa A. , Nicolae, Dan-Valentin
- Date: 2008
- Subjects: MATLAB , SIMULINK , Electric machinery , Converter simulations , Computer-aided engineering
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/18518 , uj:16010 , Citation: Ogunjuyigbe, A.S.O. et al. 2008. Simulation of six phase split winding induction machine using the MATLAB/SIMULINK environment. Journal for Electrical Enginnering, 8(3): 33-39
- Description: Abstract: Six-phase induction machine presents several benefits over their conventional three-phase counterpart. This paper thus presents the model and described in detail the simulation of a Six-phase split winding induction machine in a Matlab/Simulink environment. The Simulink model is built in such a flexible manner such that various variables of the machine can be accessed easily for further purposes such as control. Finally, simulation results showing free acceleration as well as dynamic response of the machine were presented for both direct ac supply and the PWM inverter voltage source.
- Full Text:
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