How the Choice of Bed Material Load Equations and Flow Duration Curves Impacts Estimates of Effec... more How the Choice of Bed Material Load Equations and Flow Duration Curves Impacts Estimates of Effective Discharge Michael James Cope Department of Civil and Environmental Engineering, BYU Master of Science The purpose of this study is to analyze how estimates of an important geomorphic parameter, effective discharge, are impacted by the choice of bed material load equations and flow duration curves (FDCs). The Yang (1979), Brownlie (1981), and Pagosa equations developed by Rosgen (2006) were compared for predicting bed material load. To calculate the bed material load using the Pagosa equations, the bedload and suspended load are calculated separately and the results are added together. To compare the effectiveness of the equations, measured bed material load data from the USGS Open-File Report 89-67 were used. Following the calculations, the equation results were compared to the measured data. It was determined that the Pagosa equations performed the best overall, followed by Brownli...
A comparative study of the reactivity of two sesquiterpene quinones, perezone and isoperezone, wi... more A comparative study of the reactivity of two sesquiterpene quinones, perezone and isoperezone, with a series of five mercaptans, using three different modes of activation (thermal, infrared and microwave irradiations), and under the presence or absence of solvent was performed.
A topic of recent interest in financial risk management is the predictive accuracy of Value-at-ri... more A topic of recent interest in financial risk management is the predictive accuracy of Value-at-risk (VaR) models for adequate capitalization under different market conditions (or regimes). This article assesses the forecasting performance of popular GARCH-based volatility models in the context of VaR estimation. In particular, we conduct a cross-regime analysis between time periods whereby market conditions experiences a shift. Stock returns data from the FTSE/JSE Africa All Share index were selected for the evaluation of both long and short positions of trade. Despite prior findings of the long memory models dominating in the South African financial market, we conclude that such dominance does not necessary hold when assessed under different regimes of the market. Moreover, our findings indicated a need for implementations of model switching policies, which may provide significant improvements in forecasting and minimize chances of VaR estimates falling short of actual trading losses.
Studies of community water have been on the increase since the International Drinking Water Suppl... more Studies of community water have been on the increase since the International Drinking Water Supply and Sanitation Decade, 1981- 1990. However there is some key areas of community water supply that still require research as the literature survey in this thesis illustrates. The Operation and Maintenance of community water supplies has been identified to be as important in sustainability of the services as the institutional factors. Due to the increased number of failure of the community water supplies to continue operation after short periods of time compared to urban water supplies, effort is required to identify the least amount of in puts to ensure continued operation. Through literature survey and field collection of data on management of existing projects a model was developed in order to calculate the minimum amount of funds required for the operation and maintenance. The research showed that the current monthly charges by water committees were sufficient to operate and maintain...
The cycle index of dihedral group acting on the set of the vertices of a regular-gon was studied ... more The cycle index of dihedral group acting on the set of the vertices of a regular-gon was studied (See [1]). In this paper we study the cycle index formulas of acting on unordered pairs from the set. In each case the actions of the cyclic part and the reflection part are studied separately for both an even value of and an odd value of. 1.
Training provides employees with specific skills and helps to correct deficiencies in their perfo... more Training provides employees with specific skills and helps to correct deficiencies in their performances, while development is an effort to provide employees with abilities the organization will need in the future. Training and development in the organizational context is a process by which the employees of an organization are helped in a continuous, planned way to acquire or sharpen capabilities required to perform various functions associated with their present or expected future roles and develop their capabilities as individuals.
Devolution under Kenya's new 2010 constitution has wide-ranging implications for the water se... more Devolution under Kenya's new 2010 constitution has wide-ranging implications for the water sector. The constitution recognizes that access to safe and sufficient water is a basic human right. It also assigns responsibility for water supply and sanitation provision to 47 newly established counties. Effective implementation of the new devolved framework now requires the water sector to focus on the emerging opportunities and to address a number of challenges. This note analyses the pertinent issues and options for national government and county leadership to achieve sustainable delivery of improved water services under the new dispensation.
A research thesis submitted in partial fulfilment of the requirements for the degree of the maste... more A research thesis submitted in partial fulfilment of the requirements for the degree of the master of education in the school of education of Kenyatta University September 2015
How the Choice of Bed Material Load Equations and Flow Duration Curves Impacts Estimates of Effec... more How the Choice of Bed Material Load Equations and Flow Duration Curves Impacts Estimates of Effective Discharge Michael James Cope Department of Civil and Environmental Engineering, BYU Master of Science The purpose of this study is to analyze how estimates of an important geomorphic parameter, effective discharge, are impacted by the choice of bed material load equations and flow duration curves (FDCs). The Yang (1979), Brownlie (1981), and Pagosa equations developed by Rosgen (2006) were compared for predicting bed material load. To calculate the bed material load using the Pagosa equations, the bedload and suspended load are calculated separately and the results are added together. To compare the effectiveness of the equations, measured bed material load data from the USGS Open-File Report 89-67 were used. Following the calculations, the equation results were compared to the measured data. It was determined that the Pagosa equations performed the best overall, followed by Brownli...
A comparative study of the reactivity of two sesquiterpene quinones, perezone and isoperezone, wi... more A comparative study of the reactivity of two sesquiterpene quinones, perezone and isoperezone, with a series of five mercaptans, using three different modes of activation (thermal, infrared and microwave irradiations), and under the presence or absence of solvent was performed.
A topic of recent interest in financial risk management is the predictive accuracy of Value-at-ri... more A topic of recent interest in financial risk management is the predictive accuracy of Value-at-risk (VaR) models for adequate capitalization under different market conditions (or regimes). This article assesses the forecasting performance of popular GARCH-based volatility models in the context of VaR estimation. In particular, we conduct a cross-regime analysis between time periods whereby market conditions experiences a shift. Stock returns data from the FTSE/JSE Africa All Share index were selected for the evaluation of both long and short positions of trade. Despite prior findings of the long memory models dominating in the South African financial market, we conclude that such dominance does not necessary hold when assessed under different regimes of the market. Moreover, our findings indicated a need for implementations of model switching policies, which may provide significant improvements in forecasting and minimize chances of VaR estimates falling short of actual trading losses.
Studies of community water have been on the increase since the International Drinking Water Suppl... more Studies of community water have been on the increase since the International Drinking Water Supply and Sanitation Decade, 1981- 1990. However there is some key areas of community water supply that still require research as the literature survey in this thesis illustrates. The Operation and Maintenance of community water supplies has been identified to be as important in sustainability of the services as the institutional factors. Due to the increased number of failure of the community water supplies to continue operation after short periods of time compared to urban water supplies, effort is required to identify the least amount of in puts to ensure continued operation. Through literature survey and field collection of data on management of existing projects a model was developed in order to calculate the minimum amount of funds required for the operation and maintenance. The research showed that the current monthly charges by water committees were sufficient to operate and maintain...
The cycle index of dihedral group acting on the set of the vertices of a regular-gon was studied ... more The cycle index of dihedral group acting on the set of the vertices of a regular-gon was studied (See [1]). In this paper we study the cycle index formulas of acting on unordered pairs from the set. In each case the actions of the cyclic part and the reflection part are studied separately for both an even value of and an odd value of. 1.
Training provides employees with specific skills and helps to correct deficiencies in their perfo... more Training provides employees with specific skills and helps to correct deficiencies in their performances, while development is an effort to provide employees with abilities the organization will need in the future. Training and development in the organizational context is a process by which the employees of an organization are helped in a continuous, planned way to acquire or sharpen capabilities required to perform various functions associated with their present or expected future roles and develop their capabilities as individuals.
Devolution under Kenya's new 2010 constitution has wide-ranging implications for the water se... more Devolution under Kenya's new 2010 constitution has wide-ranging implications for the water sector. The constitution recognizes that access to safe and sufficient water is a basic human right. It also assigns responsibility for water supply and sanitation provision to 47 newly established counties. Effective implementation of the new devolved framework now requires the water sector to focus on the emerging opportunities and to address a number of challenges. This note analyses the pertinent issues and options for national government and county leadership to achieve sustainable delivery of improved water services under the new dispensation.
A research thesis submitted in partial fulfilment of the requirements for the degree of the maste... more A research thesis submitted in partial fulfilment of the requirements for the degree of the master of education in the school of education of Kenyatta University September 2015
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