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Papers by Nelson Perera
Middle East Business and Economic Review, 2006
To make smart business decisions, businesses need the power of statistical analysis. The second e... more To make smart business decisions, businesses need the power of statistical analysis. The second edition prepares students to make informed decisions based on real-world data. This text equips students with the quantitative decision-making skills and analysis ...
Uncertainty generates unstable processes along supply chains, which in the end worsen their perfo... more Uncertainty generates unstable processes along supply chains, which in the end worsen their performance. Some sources of uncertainty in agri-food supply chains are distinct from those affecting general supply chains. These include issues such as variable harvest and production yields, and the huge impact of climate conditions. Thus, a deep understanding of which uncertainty factors mostly affect on agri-food supply chain management and its performance is vital for allow agribusiness to deal with them effectively. The purpose of this study is to discuss the perceived environmental uncertainties in the context of the rice supply chain in Thailand. A review of the literature indicates that perception of seven factors —supply, demand, process, planning and control, competitor behavior, government policy, and climate uncertainty— are all potential causes of uncertainty and hence instability in the Thai rice supply chain. The research method used in order to confirm these factors is a sur...
The theme of unit roots in macroeconomic time series have received a great amount of attention in... more The theme of unit roots in macroeconomic time series have received a great amount of attention in terms of theoretical and applied research over the last three decades. Since the seminal work by Nelson and Plosser (1982), testing for the presence of a unit root in the time series data has become a topic of great concern. This issue gained further momentum with Perron¿s 1989 paper which emphasized the importance of structural breaks when testing for unit root processes. This paper reviews the available literature on unit root tests taking into account possible structural breaks. An important distinction between testing for breaks when the break date is known or exogenous and when the break date is endogenously determined is explained. We also describe tests for both single and multiple breaks. Additionally, the paper provides a survey of the empirical studies and an application in order for readers to be able to grasp the underlying problems that time series with structural breaks ar...
SSRN Electronic Journal, 2000
Australian Journal of Labour …, 2004
Australia has moved rapidly from a centralised Award based wage determination system to decentral... more Australia has moved rapidly from a centralised Award based wage determination system to decentralised enterprise bargaining. This move has been associated with a substantial drop in strike activity. The relationship between working days lost and a series ...
This study examines the role of foreign debt, trade openness and labor force in the economic grow... more This study examines the role of foreign debt, trade openness and labor force in the economic growth of Sri Lanka, by employing the Johansen maximum likelihood approach of cointegration. It analyzes the data for the period, 1950-2006. The study finds that there is a cointegration relationship between economic growth and foreign debt, trade openness and labor force. Further the results
SSRN Electronic Journal, 2000
Economic Progress and Growth, 1994
The purpose ofthis paper is to investigate seven uncertain factors (supply, demand, process, plan... more The purpose ofthis paper is to investigate seven uncertain factors (supply, demand, process, planning and control, competitors' action, climate condition and Thai government policy uncertainty) affecting on efficiency of Thai rice millers. The conceptual framework for this study is developed based on literatures in the environmental uncertainty of agri-food supply chain and its performance field. Efficiency is one important performance
Middle East Business and Economic Review, 2006
To make smart business decisions, businesses need the power of statistical analysis. The second e... more To make smart business decisions, businesses need the power of statistical analysis. The second edition prepares students to make informed decisions based on real-world data. This text equips students with the quantitative decision-making skills and analysis ...
Uncertainty generates unstable processes along supply chains, which in the end worsen their perfo... more Uncertainty generates unstable processes along supply chains, which in the end worsen their performance. Some sources of uncertainty in agri-food supply chains are distinct from those affecting general supply chains. These include issues such as variable harvest and production yields, and the huge impact of climate conditions. Thus, a deep understanding of which uncertainty factors mostly affect on agri-food supply chain management and its performance is vital for allow agribusiness to deal with them effectively. The purpose of this study is to discuss the perceived environmental uncertainties in the context of the rice supply chain in Thailand. A review of the literature indicates that perception of seven factors —supply, demand, process, planning and control, competitor behavior, government policy, and climate uncertainty— are all potential causes of uncertainty and hence instability in the Thai rice supply chain. The research method used in order to confirm these factors is a sur...
The theme of unit roots in macroeconomic time series have received a great amount of attention in... more The theme of unit roots in macroeconomic time series have received a great amount of attention in terms of theoretical and applied research over the last three decades. Since the seminal work by Nelson and Plosser (1982), testing for the presence of a unit root in the time series data has become a topic of great concern. This issue gained further momentum with Perron¿s 1989 paper which emphasized the importance of structural breaks when testing for unit root processes. This paper reviews the available literature on unit root tests taking into account possible structural breaks. An important distinction between testing for breaks when the break date is known or exogenous and when the break date is endogenously determined is explained. We also describe tests for both single and multiple breaks. Additionally, the paper provides a survey of the empirical studies and an application in order for readers to be able to grasp the underlying problems that time series with structural breaks ar...
SSRN Electronic Journal, 2000
Australian Journal of Labour …, 2004
Australia has moved rapidly from a centralised Award based wage determination system to decentral... more Australia has moved rapidly from a centralised Award based wage determination system to decentralised enterprise bargaining. This move has been associated with a substantial drop in strike activity. The relationship between working days lost and a series ...
This study examines the role of foreign debt, trade openness and labor force in the economic grow... more This study examines the role of foreign debt, trade openness and labor force in the economic growth of Sri Lanka, by employing the Johansen maximum likelihood approach of cointegration. It analyzes the data for the period, 1950-2006. The study finds that there is a cointegration relationship between economic growth and foreign debt, trade openness and labor force. Further the results
SSRN Electronic Journal, 2000
Economic Progress and Growth, 1994
The purpose ofthis paper is to investigate seven uncertain factors (supply, demand, process, plan... more The purpose ofthis paper is to investigate seven uncertain factors (supply, demand, process, planning and control, competitors' action, climate condition and Thai government policy uncertainty) affecting on efficiency of Thai rice millers. The conceptual framework for this study is developed based on literatures in the environmental uncertainty of agri-food supply chain and its performance field. Efficiency is one important performance