Abstract This thesis presents the design and implementation of a signal level simulator supporting a wide variety of radar systems, and focusing on multistatic and netted radars. The simulator places few limits on the simulated system, and supports systems with arbitrary numbers of receivers, transmitters, and scatterers. Similarly, the simulator places no restrictions on the radar waveform to be simulated, and supports pulsed, continuous wave (CW) and carrier-free radar systems. A exible mod...
Abstract Diisopropyl ether (DIPE) was synthesised in a single step from a feed of propylene and water over Amberlyst 15 ion exchange resin catalyst. It was produced in a trickle bed reactor at pressures between 1 bar and 60 bar, at temperatures between 70°C and 160°C and at overall propylene to water ratios between 1 : 5 and 10 : 1. Reaction proceeded in the liquid phase within the catalyst particles. The only reactions that occurred in the system were the hydration of propylene to form is...
Abstract This investigation was undertaken to find the optimum hydraulic fluids and materials for combating cavitation erosion in hydraulic mining machinery operating,on 5:95 oil-in-water emulsions, Controlled cavitation was generated in the laboratory in a vibratory cavitation apparatus employing the stationery specimen system. The influence of separation distance between the drill tip and specimen and of varying medium temperature on cavitation erosion were also investigated but were of sec...
Abstract Asset pricing models are well established and have been used extensively by practitioners both for pricing options as well as for hedging them. Though Black-Scholes is the original and most commonly communicated asset pricing model, alternative asset pricing models which incorporate additional features have since been developed. We present three asset pricing models here - the Black-Scholes model, the Heston model and the Merton (1976) model. For each asset pricing model we test the...
Abstract This study analyses the level of student engagement at youth skills development organisations which are situated in low-income, high-stress communities. It asks the following questions: What motivates youth to be engaged in their learning environments? What are youths reporting on experiencing while in the learning environment? How might we use this data to help us develop the skills of the youth better? Through capturing a day in the life of youth from a cognitive, emotional and co...
Abstract This research looks to understand the role digital media plays to inspire and sustain sports participation and how digital media could be used as a socially inclusive tool. The study explores if strategically packaged digital media could be used in a socially inclusive way to increase or sustain sports participation. This would address one of the problems facing sports organisations, as sports participation is decreasing or at least stagnating both in South Africa and on a global sca...
Abstract The crystal structures or a number of molecular complexes formed by 4a4'•din1trodiphenyl with various diphenyl derivatives are described. The general type of structure is undoubtedly the same tor all the complexes examined and the typical arrangement may be taken as that in the complex of 4·z4 1 .. dinitrodiphenyl with 4-hydroxydiphenyl, the structure of which has been tully determined. As shown 1n fig. 7 the dinitrodiphenyl molecules form layers in face•centred array and lie on...
ABSTRACT Strategic management is a critical factor in strengthening organizational performance through effective decision making, systematic strategy formulation and implementation of strategic goals for the effective performance of an organization. Many successful organizations have consistently performed better than their competitors mainly because they have implemented strategic management. The Ministry of Education, Science and Technology (MOES&T) in the Republic of Kenya expects that all...
ABSTRACT The Tiv concept of power-sharing, ya na angbian, is a socio-political philosophy that the Tiv have been practising since the pre-colonial era. However, little effort has been made to explore the philosophical element of thisphilosophy. In this exposè, the researcher traces the roots of ya na angbian from the ethico-metaphysical perspective, narrowing it to the Tiv cosmology and ontological order, Tiv ethics and established the point of departure for the practice of the principle. ...
Abstract Suffering and its opposite, happiness, are the basic push and pull of every human action, thus their centrality in human existence. In the 6th century B.C, Gotama Siddhatta, who later became the Buddha, was struck by the reality of human suffering. For this, he abandoned all in his youth in the search for a solution to this problem. Following his enlightenment, he came to the conclusion that: firstly, life is simply suffering; secondly, the cause of human suffering is desire or crav...
The theory of knowledge as espoused by David Hume is built on the principle of sense experience as a basis of human development. Kenya‟s secondary schools education appears to have borrowed from various philosophical theories, with Hume‟s theory of knowledge being one of them. Hence the study aimed at evaluating this theory and its relevance in secondary school education level in Baringo Central District as a point of reference. The study employed descriptive ex post facto research d...
ABSTRACT Deforestation and forest degradation are among the sources of greenhouse gases emissions. Therefore, reducing emissions from deforestation and forest degradation, ‘plus’ forest conservation, sustainable management of forests and enhancement of forest carbon stocks (REDD+)are considered asa unique opportunity of improving forest governance in developing countries. REDD+ has already been included as amitigation mechanismin the Paris Agreement onclimate change.Tanzania is among th...
ABSTRACT Rice is the main food staple in Zanzibar, accounting for about 54 percent of the total caloric intake. Zanzibar imports about 80 percent of its rice requirements. Based on the potential of 3 tons per hector in rain fed and 6 tons per hector in irrigated rice. The government of Zanzibar intends to reduce external dependency from current 80 to 40 percent as part of country’s food self-sufficiency goal. This study intends to inform policy by providing quantitative evidence about farm...
EXTENDED ABSTRACT This study was undertaken to reduce the losses caused by Bactrocera dorsalis (Hendel) in Manica province, Mozambique, through an optimized integrated pest management (IPM) package. It involved interviews with farmers to collect baseline information on awareness of fruit producers regarding fruit fly pests and their management so that an IPM package can be developed based on the farmers’ needs. Additionally, systematic trapping data of B. dorsalis seasonality and damage we...
EXTENDED ABSTRACT In an effort to unlock the productive potential of the agricultural sector in Nigeria, in 2011 the government implemented the Growth Enhancement Support Scheme (GESS) in all the thirty six states of Nigeria including Abuja Federal Capital Territory. GESS is an innovative input subsidy programme that uses phone technology to reach farmers directly with subsidized fertilizer and improved maize seeds. The overall objective of GESS programme was to raise the productivity of mil...