Carbon Fibre-Reinforced Polymers (CFRP) have been used to increase the strength of reinforced concrete members, currently no studies have been conducted on torsional strengthening using Near Surface Mounted method as current research on torsional strengthening has been conducted using Externally Bonded Reinforcement technique only. Experimental, numerical and theoretical results of twenty-eight reinforced concrete beams have been presented. The beams have been tested in torsion using a specialized torsional rig system. The influence of groove spacing, the effect of different strengthening techniques, and the use of CFRP laminates and CFRP ropes were the critical parameters and the variables investigated was considered using epoxy and cement-based adhesive as an alternative adhesive to epoxy.
This study is one of the very few to examine the effectiveness of green branding through the customer value approach in the context of a developing country. It offers critical theoretical contributions for the green marketing initiatives as well as important managerial implications for organisations intending to implement green marketing and corporate social responsibility strategies. The findings of this study suggest that a well-implemented green branding strategy can lead to more effective green communication, higher customer value and more attached and loyal customer-brand relationships.
The efficient operation of wave-energy converters requires a resonance between the natural frequency of the devices and the frequency of incoming waves. However, the power delivered at resonance is controlled by the damping. Thus, experiments were undertaken on the effects of size change on the internal damping of small-scale converter models. Two of the most popular concepts for wave energy conversion were examined: the heaving buoy and the oscillating water column. It was found that the damping contributions traditionally not considered by linear wave theory exert a significant, nonlinear impact on the damping as model-size is varied.
This study explores the potential use of humanoid robots in primary schools. Classroom settings are complex, and future use of educational service robots will need to take this into account. This thesis makes timely suggestions about planning to use robots in education, in particular by engaging teachers in pre-implementation design. Based on teachers' input, a learning activity was developed for the purpose of evaluating a humanoid robot's capacity to enhance primary school students’ computational practice. The study contributes to the field of education technology implementation by demonstrating how curricular and pedagogical implications can be extrapolated early in the design process.
The purpose of this research was to identify local microbes from Sarawak soil capable of promoting plant growth to reduce the use of chemical fertilizer by introducing biofertilizer to the silviculture of Eucaplyptus pellita. The costly chemical fertilizer brings harms to the environment if used extensively for long period. In order to reduce the use of chemical fertilizer, biofertilizer that contains the beneficial natural microbes associated to the plants were isolated and incorporated into the formula of the fertilizer. The results from this research has shown that the local microbes found could potentially reduce the use of chemical fertilizer as they yield similar results with lower usage of chemical fertilizer.
A dynamic model based on the chemical thermodynamics and kinetics of reactions occurring in three different zones has been developed to predict the compositional evolution of slag and metal in a top blown steelmaking process. The fundamental process phenomena such as metal droplet ejection, the reaction of droplets in the slag-metal emulsion, slag-metal-gas equilibria were successfully incorporated in the mathematical model. The simulation results provide a comprehensive insight by quantitatively evaluating the influence of process dynamics on refining behaviour of impurities. The gathered fundamental understanding with the predictive tool should find application in the advanced process control of a steel refining process.
Hydrodynamics of laminar, steady converging and diverging flow between parallel disks and cones has been studied. A novel method that takes into account convective acceleration averaged over the gap and resulting in analytical solution of equations of motion has been developed. Biconical coordinate system is used for analysis of flow between cones. The velocity profiles and pressure distribution for both converging and diverging flow have been studied. Using the velocity profiles obtained, the motion of a particle in radial flow between disks have been studied. The research provides a tool to improve the performance of separators for wastewater treatment.
Dr Law investigated Open Learner Model visualisations in task-oriented portfolio teaching from student and teacher perspectives. This led to the design and development of a new independent open learner model tool called Doubtfire++. The teaching staff found that it helped them in creating a supportive learning environment that facilitated student self-regulated learning and students felt supported and rewarded for learning in a self-regulated manner. Both user groups have had a very positive experience using Doubtfire++.
Steady streaming is generated in a fluid when sound is applied. In this thesis, theoretical and computational methods were developed to study the role of steady streaming in attraction or repulsion between two spheres, once they come close to each other. The ultrasonic separation of cream from milk is among the many applications of this work. When ultrasound is applied, the micron-sized, spherical, Milk Fat Globules (MFGs) attract, touch and rapidly rise out of milk. This thesis explains why smaller MFGs remain behind after most of the cream separation, potentially re-creating traditional dairy products but much faster.
This research is a theoretical investigation of near-field thermophotovoltaic (TPV) systems which convert heat into electricity. Such systems are capable of producing much greater electrical power than conventional solar cells in addition to being more versatile as they can be powered by a variety of heat sources including waste heat; which could potentially revolutionise the clean energy sector. This research analyses the parameters and configurations that affect the behaviour and performance of near-field TPVs, offering engineers greater insight into such devices and allowing them to make more informed design decisions. Moreover, ways to improve performance are also proposed.