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Item An investigation into short production runs in spray drying plants of the New Zealand dairy industry : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Industrial Management and Engineering at Massey University(Massey University, 1982) Kay, RobertThe features of short production runs in spray-drying plants of the New Zealand Dairy Industry were examined and some methods developed to help improve productivity in dealing with them. In particular a survey was carried out of the managers of all spray-drying plants in order to establish quantitative and qualitative information on short production runs. It was found that short production runs could be classified into those caused by interruptions to runs, such as mechanical breakdown, those caused by specification changes, and those caused by the decision to run the plant for a limited period, usually as a result of the limited milk available for processing. The effect of capacity utilisation on spray-drying plants and the costs of smoothed milk flow were examined and it was found that smoothed milk flow could not be justified on economic grounds alone. The occurrence of short runs due to specification changes in other industries is documented as are methods to overcome their costs. It was concluded that the major effects in spray-drying plants were likely to be through set-up cost and learning behaviour. However, it was found that neither of these seriously affected cost of powder manufacture, short production runs due to specification changes were dealt with without excess costs over normal manufacture. The relationship between run length and energy consumption and run length and processing rate were examined and quantified. A computer based management information system was developed to assist in the control of costs in general and short production runs in particular in spray-drying plants.Item Efficiency in production of butter : being an investigation into certain factors affecting the economic aspects of technical efficiency of butter factories operating in New Zealand, with special reference to the1949/50 season : a thesis presented to the University of New Zealand in partial fulfilment of the requirements for the degree of Doctor of Philosophy(Massey University, 1956) Vautier, Clyde Percival WilliamNew Zealand's economy is dependent on dairying as a source of national income to a very marked degree, for more than one-third of the country's total export income is derived from this source. Of the total whole milk produced *at the pail* in the 1952-53 season, over 68 per cent was manufactured into creamery butter, yielding 200,000 tons. A revenue in excess of £52,000,000 was derived from this butter. A processing industry of this magnitude and importance merits close attention. Although much time and research have been devoted to technical manufacturing problems, very little analytical work has been conducted in New Zealand on the economic aspect of efficiency in dairy processing industry. Although data are available in the form of reports, compiled statistics and articles, they are descriptive in character, or mere compilations. As such they fail in the important task of analysis of the conditions they describe. It seems strange that in a country like New Zealand where the standard of scientific reasearch is so high and where the dairy industry contributes so much to the national economy, that so little is known of the economic aspects of the dairy industry. Apart from TASKER's two papers TASKER, J.P. (1938;: The Cost and Capitalization of North Auckland creameries during 1935-36. The Accountants' J. (August) - New Zealand Creamery Costs and Pay-outs for the 1937-38 Season. N.Z.Jnl. of Science and Technology, Vol. 26. Np.4 (Sec. A), PP. 204-213, 1944. the amount of analytical research is almost nil. The valuable information compiled by the New Zealand Dairy Board is largely descriptive and statistical and does not throw light upon the problems as investigated by research workers in this field overseas. See Appendix A: "Related Studies".Item The logistics of milk collection : an exploratory case study between New Zealand and Brazil : a thesis submitted in partial fulfilment of requirements for a degree of Master in Logistics and Supply Chain Management, Massey University, Palmerston North Campus, New Zealand(Massey University, 2010) Pimenta, Luis Carlos QueirozLogistics has became one of the most important activities for all companies where has been treated as strategic function to gain competitive advantage over a companies' competitors. Agribusiness as any other business is also using logistics tools in their supply chain to reduce their chain cost and more important to improve their business efficiency as a whole. Transportation is one of the logistics activities that most influences price of product which in some cases can represent 25% of the final price. Milk collection for a dairy business plays an important part in the overall performance of the company. A poor milk collection system jeopardise the entire chain as it is the first stage of the manufacturing process. The main purpose of this work is to identify and describe the possible differences and similarities between a Brazilian and New Zealand Dairy Company regarding their logistics of milk collection. Even though the two companies are in the same business segment they are inserted in different environments/markets therefore need to deal with different issues regarding milk collection such as companies' structure, milk production's cycle, and routing and scheduling applications. However, both understand the importance of the logistics activities and apply tools in their chain to improve their efficiency. Due to its size and market share the New Zealand Company has a better collection system in place than the Brazilian Company. Both have implemented some changes in the last few years that brought some improvements for their milk collection.