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N'DIAYE, WALY ABOUBACAR. "MILK SUPPLY ADJUSTMENTS AND INVESTMENT BEHAVIOR IN ARIZONA AND NEW MEXICO." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/188007.
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Government involvement in the production and marketing of milk and dairy products is more pronounced than in any other agricultural product. The U.S. government administers two major programs that affect significantly the production and marketing of milk throughout the United States. These are the Federal Milk Marketing Order Program and the Dairy Price Support Program. In Arizona, in addition to these two major programs, the United Dairymen of Arizona Cooperative operates a base system that determines how cooperative milk revenues are allocated among producer members. This dissertation discusses some theoretical models that provide some insights into the following questions: (1) How would the dairy industry perform without the historically administered prices? (2) What are the benefits and costs associated with the order program and the base system? Then, this inquiry focuses on the Arizona and New Mexico dairy sectors. The two production sectors are quite similar, as are the marketing institutions, except for the existence of the base system in Arizona. Milk supply response in Arizona and New Mexico is investigated. Two ways in which supply adjustments can be achieved are identified and empirically investigated. (1) Creation of new dairy facilities or relocation of dairy facilities from other markets. If the decision to invest in Arizona or New Mexico is assumed as given, it is found that the existence of base system is a significant factor in explaining the location choice of new producers. (2) Expansion in output of existing dairy farms. It is found that dairy farmers in Arizona and New Mexico respond to changes in the farm level price of milk. The last effort of the empirical investigation is on the consumers' welfare losses due to the regulations of the Arizona and New Mexico dairy markets. It is found that the milk marketing orders and the policies of the UDA Cooperative in Arizona and AMPI in New Mexico, on the average, enforce a tax on Arizona's consumers of fluid milk in the amount of 10 million dollars per year, or 13.5 percent of producers' total revenue, and a tax on New Mexico's consumers of fluid milk in the amount of 5.6 million dollars per year, or 12.6 percent of producers' total revenue. (Abstract shortened with permission of author.)
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Fadel, I. "Economic and technical aspects of lactation in Awassi sheep with special reference to simplified recording and system development under semi-arid conditions." Thesis, Bangor University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380212.
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Mndeme, Shafii Hussein. "An econometric approach to estimating the unit cost of procducing milk in the South African dairy industry." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2227.
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MScAgricABSTRACT: Small dairy farms in South Africa are observed to have higher costs than larger farms, and whether those higher costs are due to technology or inefficiency has implications for policy. This research focused on finding the curve that best represents the relationship between average cost and level of output. That was done by relating average cost to actual output. However, it was found to be more appropriate to relate average cost to planned output on the basis that costs are more likely to reflect what the farmer expects output to be. As a result, a pragmatic two-step procedure was adopted. In the first step, the farmer’s planned output was determined by estimating a production function based on the farmer’s actual use of inputs, i.e., land, number of cows in the herd, labour, feed and veterinary costs. In the second step, the long-run average cost (LAC) curve was estimated where average cost is calculated as total cost divided by planned output and this is then related to the level of planned output. To identify the determinants of production cost thus the drivers of higher costs on small farms, the cost of milk production by farm size was decomposed into frontier and efficiency components with a stochastic cost curve and long run cost curve using data from dairy farms in KwaZulu-Natal (South Africa). Financial data of 37 farms for the period 1999 to 2007 were used in econometrics estimation of long run average cost curve (LAC) function for different level of production (as a proxy of planned output). Results show that average cost curves exhibiting variation in unit cost with output thus suggesting the existence of economies of size with larger farms being able to produce any given level of output at lower costs compared to their smaller counterparts. The study found that long-run average cost curve (LAC) for the sample of dairy farms is L-shaped rather than U-shaped.
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杜明德 and Beng-teck Benedict Taw. "The socio-economic impact of mild head injury in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41650840.
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Rinfret, Hugues. "Tariffication in the dairy industry : a spatial equilibrium approach to analyze geographic price relationships between Canada and United States." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=67540.
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The impacts of tariffication on Canadian milk producers were estimated via supply, price and trade flow parameters using a spatial price equilibrium model applied to milk production regions of Canada and the United States.Two price scenarios were put forward because of supply management in Canada. The first incorporated producer prices while the second used shadow prices for Canadian producers, defined as the producer price less a reduction in price which accounts for the value of production quota. The hypothesis that tariffication reduces milk production in Canada to the extent that U.S. producers increase their exports to Canada was partly supported in scenario one but not in scenario two. Specific tariffs of $11.00/hl prevented U.S. imports to reach Qu 'ebec and Ontario. However, the rest of Canada increased its imports from Great Lakes to the detriment of Quebec and Ontario. Consequently, production decreased slightly in Qu 'ebec and increased in Ontario, whereas prices decreased significantly in both provinces. Scenario two showed ability of Qu 'ebec and Ontario to withstand American competition. Prices and production level remained unchanged while export flows to the rest of Canada increased to the detriment of the Great Lakes.
The present study investigated only a specific aspect of the tariffication proposal in the GATT and does not intend not to reflect the very complex aspects of GATT negotiations. The findings of this analysis must be interpreted with this caveat. Further studies considering other plausible tariffication scenarios or effective tariffs on an individual dairy product basis would broaden our understanding of the potential implications of tariffication.
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Kumbirai, Kaguru Tinashe. "Characterisation of the production and consumption of milk in the communal livestock production sector of the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/3066.
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The study was conducted in Eastern Cape Province, South Africa with the objective of characterising milk production and consumption among the communal households. A pretested semi-structured questionnaire was used to collect data through a single visit survey between June 2014 and May 2015. The study was undertaken in five randomly selected communal districts using a multi – stage area probability sampling method. Household sample size was calculated using a statistical methodology through a fixed formula based on a rural population size of 4410000, at a confidence level of 95 percent. A total of 500 households were selected with a sample size of 20 households in 5 communities within five different communal districts within the province. Half of the total sample size was used to represent the number of non-milk producing households (250) to get a true reflection on consumption profiles for nonproducers. Across the province the average communal family size was between 5-10 members with a monthly income of ZAR1340 per household. On average, pasture land size of the sampled households was 1 ha, with a range of 0.25-1.7 ha. The numbers of animals per species found in the studied province was highest for sheep (310) followed by cattle (227) and goat (87). Average livestock holding per household in the study area was 9.85 TLU (Tropical Livestock Unit). According to the respondents the predominant milking livestock numbers were between 1-3 animals milking per household. In the studied area traditional hand milking of livestock was the major milking practices at 12 percent in goats, 15 percent in sheep and 45 percent in cattle milk production. Consumption was the predominant reason for milk production recorded at 27 percent across the province. Milk production was 43 percent most preferred in cattle followed by 32 percent in goat and least at 29 percent in sheep across the province. In general, from the study it was noted that the majority (38 percent) of the respondents across the province indicated 0-5mins as the time it took to milk most milk producing livestock. The majority of the milking practices was done (37 percent) predominantly once a day, followed by 2 percent twice daily across the province. The daily milk production was on average (0.45±1.07) 2-5 litre in cattle, (4.86±0.814) 0-1litre in goats and (2.62±0.42) 0-1 litre sheep per producing house hold with in the province The monthly raw milk consumption in the province was (2.20± 1.42) 2-5 litres of cattle milk, (4.78±0.79) 2-5 litres of goat milk and (4.98±0.69) 2-5 litres of sheep milk per consuming household.
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Schoeffling, James Robert 1959. "The financial and management implications of bovine somatotropin on the Arizona dairy industry." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276854.
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This study examines how Bovine Somatotropin (BST) may impact Arizona dairy producers. The results of dairy scientists experimenting with BST are summarized in terms of reported milk yields and possible changes in feeding and herd management. Dairy enterprize budgets representative of Arizona are constructed to examine how income statements may change if BST is approved. The effects of increased milk supply on Arizona milk prices are estimated using the institutional structure of the Central Arizona Order and the United Dairyman of Arizona. Results of experiments with BST in Arizona are used to generate net returns at several rates of adoption under changing milk prices for three dairy farms in Arizona.
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White, Bruce M. ""Give us a little milk" : economics and ceremony in the Ojibway fur trade." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64477.
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Begnis, Heron Sérgio Moreira. "Formação de valor transacional e relacional na cadeia produtiva do leite no Rio Grande do Sul." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/8957.
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A realidade do ambiente competitivo marcada por fenômenos como a globalização dos mercados e das culturas e o rápido desenvolvimento tecnológico determina a forma como se deve pensar as organizações econômicas. No campo do agronegócio esta mudança de olhar foi marcada pela construção de lógicas de análise que não se colocam como micro ou macroeconômicas, mas buscam o entendimento das interconexões de atividades. As abordagens de cadeias produtivas (filières) e sistemas de commodities dominaram os estudos em agronegócios em virtude desta sua lógica própria de salientar as ligações interorganizacionais e pela tentativa de englobar o máximo possível do processo de produção, transformação, comercialização e consumo de produtos de origem agropecuária. Avançando sobre a lógica de encadeamento de atividades e das parcerias de longo prazo, esta pesquisa partiu do entendimento de que é o processo de formação de valor que constitui a base sobre a qual articulam-se os relacionamentos interorganizacionais presentes nas cadeias produtivas agronegociais. Enquanto arranjo interorganizacional, uma cadeia produtiva compõe-se de diferentes organizações unidas por um componente relacional ainda não muito bem explicado pelas abordagens existentes. Nesta direção, tomou-se por objetivo central a busca do entendimento de como se estabelece o processo de construção de relacionamentos interorganizacionais sob a ótica da formação valor. Dentro desta perspectiva, esta pesquisa teve como objetivo investigar a configuração dos relacionamentos interorganizacionais e o estabelecimento de parcerias de longo prazo no interior das cadeias produtivas agronegociais, procurando especificar a participação de elementos relacionais formadores ou geradores de valor neste processo, considerando este como um fenômeno marcado pela complexidade, dinâmica e multidimensionalidade. Frente a este objetivo, a pesquisa desenvolveu-se tomando como referência a cadeia produtiva do leite no Rio Grande do Sul, Brasil, em especial o segmento da industrialização do leite. Esta pesquisa construiu-se sustentada numa revisão teórica sobre diferentes tipos de configurações interorganizacionais que obedecem a uma lógica de cadeia, da Economia dos Custos de Transação – ECT enquanto base teórica para a formação destes arranjos interorganizacionais e fundamentalmente sobre o processo de formação de valor através de relacionamentos interorganizacionais. Os resultados alcançados permitem uma ampliação do entendimento sobre a própria noção de cadeia produtiva (MORVAN, 1985, RAINELLI et al., 1991, MONTIGAUD, 1992) e de sistemas de valor (PORTER, 1989). Assim, baseado no entendimento econômico de valor e do conceito de empresa orientada pelo mercado, concluise que os relacionamentos interorganizacionais, formados no centro da cadeia produtiva estudada, efetivam-se quando há uma percepção inicial de valor ao nível mínimo dos atributos intrínsecos dos bens (valor comercial). Em complemento, na medida em que a percepção de valor atinge níveis mais complexos, forma-se valor relacional e solidificam-se os relacionamentos e as parcerias de longo prazo entre as organizações inseridas nas cadeias produtivas agronegociais. Neste processo, identifica-se a presença e atuação de seis elementos essenciais ou básicos da formação de valor relacional: confiança, cooperação, comprometimento, compartilhamento, comunicação e compensação.The complex reality of the competitive environment, globalization of markets and cultures and the fast technological development determines the way as we should think the organizations. In the agribusiness field this change was signaled by the construction of an analytical logic that could not be situate as micro or macroeconomics, but this approach goes toward a more holistic understanding on the interconnected activities. These productive chains (filières) and commodities systems approaches dominated the studies in agribusiness due to their own logic that points out the interorganizational connections with the aim of viewing the whole process of the production, transformation, marketing and consumption of agricultural goods. Moving forward on the logic of linkage of activities and long run partnership, this study starts from the understanding that it is the value formation process that constitutes the base on which the interorganizational relationships are build in the agribusiness productive chain’s context. While an interorganizational configuration, an agribusiness chain is composed by different joined organizations that are integrated by a relational component that is not still very well explained by the current theoretical approaches. In this perspective, the research had as objective investigates the configuration of the interorganizational relationships and the establishment of long run partnerships inside the agribusiness chains reality. Particularly this study try to specify the participation of the relational elements while value producers in this process that are understood as a complexity, dynamic and multidimensional phenomena. In this sense, this study investigated the agribusiness productive chains configuration trying to deepen the study about the value formation process, considering this as complex, dynamic and multidimensional phenomena. With this purpose, this research was developed taking the milk agribusiness chain of Rio Grande do Sul, Brazil as reference and focusing on the agro-industry. The study is supported by a theoretical background about different kinds of interorganizational configurations that follow the logic of chains, on the Transaction Costs Economics - TCE as theoretical base for the formation of these arrangements and fundamentally about the process of value formation through multidimensional relationships. The reached results allow an enlargement of the understanding on the own notion of productive chain or filière (MORVAN, 1985; RAINELLI et al., 1991; MONTIGAUD, 1992) and value systems (PORTER, 1989). Then, based on the economical understanding of value and market it is possible to conclude that the interorganizational relationships formed in the center of the chain productive studied taking shape when there is an initial perception of value at the minimum level of the intrinsic attributes of the goods (commercial value). When the perception of value reaches more complex levels the relational value is formed and the relationships and long run partnerships among organizations inserted in agribusiness chains become consolidated. Inside of this process it is possible to identify the presence and performance of six decisive relational value formation elements: trust, cooperation, sharing, commitment, communication and compensation.
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Lewis, Andrew (Andrew Michael). "Using Stochastic Optimization and Real-Options Models to Value Private Sector Incentives to Invest in Food Protection Measures." Thesis, North Dakota State University, 2006. https://hdl.handle.net/10365/29905.
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Agro-terrorism has become a major concern since the September 11, 2001, terrorist attacks due to characteristics that create unique problems for managing the threat of an agro-terrorist attack. The costs of trucking delays alone were in the tens of millions of dollars. Over the last few years, the government has spent billions of dollars on biological surveillance and record keeping in preventing potential attacks. Several public and private initiatives are currently in use. Examples include 1) the bio-terrorism regulation of 2004 on maintenance of records; 2) establishment of food protection centers for research and teaching excellence; and 3) investments in emerging technology, such as radio frequency monitoring (RFEM) technology, with the potential to track shipments and provide real-time data that can be used to prevent agro-terrorism risks along food supply chains. This thesis addresses the costs and risk premiums associated with alternative tracking strategies, where and when along the milk supply chain these strategies will reduce the most risks, and what policy implications are associated with the most costeffective tracking strategy. To accomplish these objectives, stochastic optimization is used to determine the costs and risk premiums of alternative tracking strategies. Next, the realoptions method along with a portfolio of options, also referred to as the "tomato garden" framework, is used to determine where and when alternative intervention strategies should be implemented to reduce the most risks. Finally, policy implications are derived on the cost-risk tradeoffs, probability of attacks, and containment efforts if there is an attack by using game theory to determine the incentives needed to motivate participants in the milk supply chain to invest in security measures.
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Lewis, Andrew Michael. "Using Stochastic Optimization and Real-Options Models to Value Private Sector Incentives to Invest in Food Protection Measures." Thesis, North Dakota State University, 2006. https://hdl.handle.net/10365/29905.
Full textAbstract:
Agro-terrorism has become a major concern since the September 11, 2001, terrorist attacks due to characteristics that create unique problems for managing the threat of an agro-terrorist attack. The costs of trucking delays alone were in the tens of millions of dollars. Over the last few years, the government has spent billions of dollars on biological surveillance and record keeping in preventing potential attacks. Several public and private initiatives are currently in use. Examples include 1) the bio-terrorism regulation of 2004 on maintenance of records; 2) establishment of food protection centers for research and teaching excellence; and 3) investments in emerging technology, such as radio frequency monitoring (RFEM) technology, with the potential to track shipments and provide real-time data that can be used to prevent agro-terrorism risks along food supply chains. This thesis addresses the costs and risk premiums associated with alternative tracking strategies, where and when along the milk supply chain these strategies will reduce the most risks, and what policy implications are associated with the most costeffective tracking strategy. To accomplish these objectives, stochastic optimization is used to determine the costs and risk premiums of alternative tracking strategies. Next, the realoptions method along with a portfolio of options, also referred to as the "tomato garden" framework, is used to determine where and when alternative intervention strategies should be implemented to reduce the most risks. Finally, policy implications are derived on the cost-risk tradeoffs, probability of attacks, and containment efforts if there is an attack by using game theory to determine the incentives needed to motivate participants in the milk supply chain to invest in security measures.
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Broome, Malcolm Charles, and mikewood@deakin edu au. "Aspects of milk protein catabolism by lactobacilli." Deakin University. School of Sciences, 1988. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050902.120502.
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Lactobacillus plantarum and subspecies of Lactobacillus casei were isolated from good quality mature Cheddar cheese and characterized with respect to metabolic functions that would allow their use in cheesemaking. In this way microbiological control of the maturation process with particular emphasis on protein catabolism was achieved. The lactobacilli isolated were selected for low growth rates (and acid production) in milk, and low proteinase activity to allow for their addition in high numbers to cheesemilk together with the normal starter flora (group N streptococci). The growth and acid production of the starter bacteria were unaffected by the presence of the lactobacilli during cheese manufacture and it was found that the added lactobacilli were able to grow and function under the conditions prevalent in Cheddar cheese during maturation. It was also demonstrated that the lactobacilli could be grown in an artificial medium to high numbers under controlled conditions and could be harvested for the preparation of cell concentrates, a necessary characteristic for commercialization. The lactobacilli also metabolized citrate, a potential problem in cheese maturation associated with C02 production but this did not adversely affect the maturation process under the conditions used.
Compared to the group N streptococci the non-starter lactobacilli possessed a proteinase system that had a higher temperature optimum and was less affected by heat and sodium chloride. They also possessed a more active peptidase system although both the lactobacilli and the starter organisms possessed a similar range of peptidases.
Non-starter lactobacilli were added to normal cheese and cheese made with proteinase negative starter. The added organisms did not adversely affect manufacturing parameters and did not metabolize citrate or lead to the formation of biogenic amines. However protein catabolism rates, particularly with respect to peptide degradation,
were increased, as was flavour development and intensity. It was observed that the body and texture of the cheeses was unaffected by the treatment. By controlling both the starter and non-starter microflora in the cheeses a practical system for favourably influencing cheese maturation was possible.
The investigation has demonstrated that carefully selected and characterized non-starter lactobacilli can be incorporated into Cheddar cheese manufacture in order to influence flavour development during maturation. Moreover the organisms can be added to the vat stage of manufacture without causing problems to the manufacturing process. This approach is a simple cost effective means of improving the cost of Cheddar cheese production and provides an unique opportunity to improve and control quality of all Cheddar cheese produced.
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Itsaranuwat, Pariyaporn. "Aspects of the fermentation of soy milk." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272234.
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Suutari, T. (Tero). "Economic aspects in education." Master's thesis, University of Oulu, 2015. http://urn.fi/URN:NBN:fi:oulu-201504021231.
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Leading theme in this master’s thesis is adaptation and preparation to ever changing requirements of skills and knowledge in the working life. These changes of requirements in the working life are implied by the changes in the occupational structure in Finland that is presented in the thesis. The data used in thesis to show the changes in the occupational structure in Finland Finnish Longitudinal Employer-Employee Data, FLEED, which is gathered by Statistics Finland and it shows changes in occupational structure of Finland between years 1995 and 2007. Education is considered in this thesis so that its object is to prepare children and future generations for working life with suitable skills and knowledge. The variety of other, equally important, objects that education has and possibly contradictions as well as problems that might arise in the course of achieving all the objects is beyond of this study. Changing occupational structure arises a question that how education prepares itself to the unknown changes? To answer the question asked, I will introduce Economics of education and Educational planning and how these two relate to each other, especially how economics of education has affected education and educational planning. Therefore I will first take historical review of the economics of education and introduce two main theories; human capital theory and screening theory. The main difference of these two will be explained and also what kind of difference it would make to education if either one could be proved right. It would also have an effect on how education should be arranged in the society. Educational planning has had, in its course, different approaches to analyze and predict future. I will review those approaches; also these approaches have been influenced by economics of education. In the last part of the thesis I bring up studies in Finland has tried to prepare and project changing work life. Also I discuss about can education bring something new to economics of educationTämän Pro gradu-tutkielman johtava teema on mukautuminen ja valmistautuminen muuttuviin vaatimuksiin tiedoista ja taidoista työelämässä. Ammattirakenteen muutos Suomessa viittaa siihen että vaatimukset erilaisille tiedoille ja taidoille työelämässä on tapahtumassa. Aineisto ammattirakenteen muutoksesta on Tilastokeskuksen yhdistetty työntekijä-työnantaja-aineisto (Finnish Longitudinal Employer-Employee Data FLEED). Ammattirakenteen muutos ajoittuu vuosien 1995 ja 2007 välille. Koulutus mielletään tässä Pro gradu-tutkielmassa sellaiseksi toiminnaksi jonka tavoite on valmistaa lapsia sekä tulevia sukupolvia työelämään oikeanlaisilla taidoilla ja tiedoilla. Yhtälailla tärkeät muut tavoitteet, mitä koulutukselle ja kasvatukselle on annettu, sekä mahdollisesti syntyviä ristiriitoja tavoitteita saavuttamisessa ovat tämän tutkielman ulkopuolella. Muutokset ammattirakenteessa luo kysymyksen, että miten koulutus on valmistautunut tällaisiin tuntemattomiin muutoksiin? Vastatakseni kysymykseen esittelen koulutusekonomian ja koulutussuunnittelun, sekä erityisesti miten koulutusekonomia on vaikuttanut koulutussuunnitteluun. Aluksi käyn läpi koulutusekonomian ja esittelen sen kaksi pääteoriaa: inhimillisen pääoman teorian ja siiviläteorian. Selitän millä tavoin nämä teoriat eroavat toisistaan ja mikäli jompikumpi voidaan todistaa oikeaksi millainen vaikutus sillä olisi koulutukseen. Koulutussuunnittelussa on käytetty monenlaisia analysointivälineitä tulevaisuuden ennakoimiseksi. Esittelen nämä eri tavat ja työkalut, sekä miten koulutussuunnittelu on historiansa aikana muuttunut ja miten taloudellinen ajattelu on muuttanut koulutussuunnittelua. Viimeisessä osassa tuon esille tutkimuksia siitä miten Suomessa pyritään ennakoimaan ja valmistautumaan muutoksiin työelämässä. Käyn myös keskustelua siitä voiko kasvatustiede tuoda jotain uutta koulutusekonomiaan
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Keller, David Scott. "Factors affecting economic values for yields of milk components /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu148759165817296.
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Aguilar, Bobadilla Silvia E. "ECONOMIC ASPECTS OF HISTORICAL CONTAMINATION." Doctoral thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-161826.
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The main scope of the work is to support a wider understanding of the achievements and limitations of economic analysis in historical contamination issues. The work describes how various schools of economics focus their study on environmental problems, specifically on Brownfields redevelopment. It presents the ideas of environmental economics, resource economics, free market environmentalism, institutional economics, political economy and ecological economics. The work includes a case study from the region of Ralsko in North Bohemia.
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Lei, Stephen. "Economic Feasibility of Assembling Grade-A Milk by Protein Content." DigitalCommons@USU, 1988. https://digitalcommons.usu.edu/etd/4082.
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This thesis consisted of two computerized simulations of assembling milk from dairy farms and distributing it to milk plants, using TRUCKSTOPS, a commercial truck routing computer program. In the first simulation milk was assembled and delivered to the nearest available plant without regard to protein content, with the high-protein milk delivered to manufacturing plants. Doing so increased the fat and protein in milk delivered to manufacturing plants, and increased cheese production 2.6 percent. It also increased assembly costs and lowered fat and protein in milk delivered to fluid milk plants. The value of the extra cheese was less than the extra assembly costs and the value of the butterfat diverted from fluid milk to manufacturing plants, making the operation economically unfeasible.
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Shappell, Nancy W. "Calcium: some aspects of subcellular accumulation and distribution in milk." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/81003.
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Distribution and bioavailability of ⁴⁷calcium in milk labeled by extrinsic and intrinsic methods was investigated. Milk from Sprague Dawley rats was labeled by both methods, and milk from a cow was labeled by the extrinsic method. Retention of ⁴⁷Ca from milks administered to young male Sprague Dawley rats was determined through whole body counting for 6 days after administration of milk. Percent of ⁴⁷Ca dose retained was 72% for extrinsically labeled cow milk, 62% for extrinsically labeled rat milk, and 55% for intrinsically labeled rat milk. Samples were fractionated by ultracentrifugation and by gel exclusion chromatography. ⁴⁷Calcium distributions in rat milk labeled intrinsically or extrinsically were similar. The majority of ⁴⁷Ca was found in a particulate, > 30,000 molecular weight fraction (about 60% for cow milk, about 90% rat milks). The amount of milk calcium retained by rats appeared to be related to the amount of noncasein micelle-associated calcium.
When administered by intraperitoneal injection into rats, ⁴⁵Ca specific activity of milk peaked in 60 to 90 minutes. Specific activity was highest in cytosol, and lower in Golgi apparatus and rough endoplasmic reticulum. Specific activities in subcellular fractions changed in parallel with specific activities of milk. Rapid turnover of Ca was observed in endoplasmic reticulum and Golgi apparatus; this was expected since secretory proteins and associated Ca are transported through these organelles for secretion.
In vitro ⁴⁵Ca accumulation was compared in Golgi apparatus and endoplasmic reticulum from liver and mammary gland of lactating Dunkin Hartley guinea pigs. In the presence of ATP, highest accumulation per unit total fraction protein was found in Golgi apparatus (mammary gland 28% of available ⁴⁵Ca, liver 11%) while 8% was accumulated by endoplasmic reticulum fractions. Calcium accumulation was not the result of binding, as preincubation of vesicles with calcium ionophore resulted in less than 10% of the accumulation found without ionophore. The ATPase inhibitor sodium orthovanadate, and the ATP analog AMP-PNP, reduced ⁴⁵Ca accumulation in all fractions. Protonophore caused a small reduction in ⁴⁵Ca accumulation in all cases. Citrate accumulation by fractions was not observed under conditions used for ⁴⁵Ca accumulation.Ph. D.
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Heintz, Emelie. "Health economic aspects of diabetic retinopathy." Doctoral thesis, Linköpings universitet, Utvärdering och hälsoekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-76283.
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To ensure that the resources of the health care sector are used effectively, new technologies need to be evaluated before implementation to examine if they generate health outcomes at an acceptable cost. This information can be collected by performing health economic evaluations in which the costs and health outcomes of different technologies are compared. To estimate the effect on health care budgets, there is also a need for information about the prevalence of the specific disease. Health outcomes in health economic evaluations are often measured in quality-adjusted life years (QALYs), which are calculated by multiplying the remaining life years after an intervention by a weight representing the health-related quality of life (HRQoL) during those years. This thesis aims to provide deeper knowledge of the health economic aspects of diabetic retinopathy (DR), an eye complication that affects patients with diabetes and may in the worst case lead to blindness. The focus is on three empirical and two methodological health economic research questions. The empirical research areas cover prevalence, costs, and HRQoL related to patients with DR. The methodological research questions explore the performance of different methods for estimation of QALY weights. This is of interest since it has been argued that the most common methods for estimating QALY weights may not capture all relevant vision-related aspects of quality of life. The analyses comprehend the validity of different methods for estimating QALY weights among patients with DR and if the results of one of the specific methods for estimating QALY weights, the time trade-off (TTO) exercise, are affected by patients’ subjective life expectancy (SLE). The empirical results demonstrate that DR is seen in approximately 40% and 30% of patients with type I and type II diabetes respectively, indicating that the prevalence of DR has decreased in both of these patient groups. Healthcare costs vary considerably between different severity levels of the disease, being estimated at €26, €257, €216, and €433 per patient per year for background retinopathy, proliferative diabetic retinopathy (PDR), diabetic macular oedema (DMO), and PDR combined with DMO respectively. Blindness due to DR is associated with an increased use of transportation services, caregiving services, and assistive technologies as well as productivity losses. This suggests that preventing the progression of DR may lower healthcare costs. Patients with vision impairment due to DR have lowered HRQoL in various dimensions, but the diagnosis of DR in itself has only a limited effect on HRQoL. The results on the methodological research questions show that different methods for estimating QALY weights seem to give different results. In comparison to EQ-5D, the Health Utilities Index Mark 3 (HUI-3) is the most sensitive method for detecting differences in QALY weights due to DR, and if decisions are to be made based on values from the general public, it can be recommended for use in cost-utility analyses of interventions directed at DR. Neither of the direct methods, TTO and the visual analogue scale, seems to be sensitive to differences in visual function, and more research is needed concerning the role of vision in people’s responses to the TTO exercises. In TTO exercises with time frames based on actuarial life expectancy, the patients’ SLE has an effect on their willingness to trade off years for full health. Thus, applying time frames deviating from patients’ SLE may result in biased QALY weights. Such bias may appear stronger within patient populations than within the general public. In conclusion, this thesis offers estimates for prevalence, costs, and QALY weights that can be used in economic evaluations of interventions directed at DR and as benchmarks for future DR research in order to follow up consequences of changes in diabetes care. In addition, it demonstrates that the choice of method for estimating QALY weights may have an impact on whether an intervention is considered cost-effective.
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Santos, Alvaro K. "Economic aspects of airport security measures." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA366334.
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Sach, Tracey Helen. "Economic aspects of paediatric cochlear implantation." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403949.
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Echevarne, R. "Economic aspects of the Spanish airports." Thesis, Cranfield University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309617.
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Miltz, David. "Economic aspects of targeting environmental policy." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235914.
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This thesis is composed of two parts; the first addresses theoretical aspects of the economics of targeting pollution control policy, whilst the second is an illustrative case study designed to embellish the more abstract insights of the first section.
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Nazerzadeh, Hamid. "Internet advertising : optimization and economic aspects /." May be available electronically:, 2009. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
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Hefti, Elise. "Economic aspects and implications of obesity." Frankfurt, M. Berlin Bern Bruxelles New York, NY Oxford Wien Lang, 2009. http://d-nb.info/995713553/04.
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Hubbard, Lionel James. "An economic analysis of policy measures in the EC milk sector." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303170.
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MacDonald-McSharry, Fiona. "Aspects of occurrence of Listeria monocytogenes in milk and diary products." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360134.
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Stefani, Gianluca. "Economic aspects of information in environmental economics." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489205.
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Information may resolve uncertainty and uncertainty is pervasive. Thus, seeking, producing and trading of information are common economic activities. This is also true in the economics of the environment and for the different stakeholders therein involved. The central aim of this research is to investigate some theoretical aspects of the value and effects of information in environmental economics. Information is valuable either as a decision aid in contexts where either health and environmental characteristics of goods are uncertain or as the object of direct valuation under different provision rules. In a choice context three questions arise providing grounds for empirical investigations.
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Cali, Massimiliano. "Spatial aspects of the economic development process." Thesis, London School of Economics and Political Science (University of London), 2009. http://etheses.lse.ac.uk/2068/.
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In recent years the spatial dimension of economic development has attracted increasing interest in the development field. However there is still little analysis and evidence of the ways many spatial dimensions interact with other economic dimensions in the development process. This thesis aims to help filling this gap by bringing a geographical perspective into development economics frameworks. It is empirical in nature and uses data on different sub-national units from India and Uganda. The work is structured around four main papers (divided into six chapters). The first paper analyses two important aspects of the Indian urbanisation process. First it finds a U-shaped relation between rural-urban disparities in living standards and income per capita across Indian states in the Post-Independence period. Second, it shows that the urbanisation process in India has been characterised by convergence in the 20th century: smaller towns grow faster than large ones. The second paper examines the role of the agricultural sector in influencing the shape of the urban system. The analysis suggests that the elasticity of rural-urban labour supply increases both urban primacy and the urbanisation rate in Indian states during the Post-Independence period. The third paper tests for the impact of urban growth on rural poverty using a sample of Indian districts in the period 1981-1999. It finds that urbanisation reduces poverty surrounding rural areas. This effect is largely attributable to positive spillovers from urbanisation rather than to the movement of the rural poor to urban areas. The final paper examines the deteminants of rising returns to schooling in Ugandan districts during the 1990s. The findings suggest that both educational supply and demand factors influenced the wedge between skilled and unskilled labour. Moreover while trade opening reduced this wedge, pro-market reforms increasing inter-district trade raised returns to education in districts relatively abundant in skilled labour.
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Ivlevs, Artjoms. "Economic and political economy aspects of migration." Aix-Marseille 2, 2006. http://www.theses.fr/2006AIX24009.
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L’objectif de cette thèse est d’explorer plusieurs phénomènes liés à la migration en prenant en considération différents aspects de la réalité économique contemporaine : l’importance du secteur non-échangeable, l’asymétrie entre les flux migratoires et les flux des investissements, ainsi que les problèmes persistants entre différentes communautés ethniques. Dans le premier chapitre introductif, nous explorons la littérature sur la politique économique de l’immigration et nous étudions les différentes voies par lesquelles les immigrés peuvent affecter le bien-être des résidents domestiques. Dans la deuxième partie, nous développons un cadre théorique afin d’analyser les effets de l’immigration sur le bien-être individuel dans une petite économie ouverte avec le secteur non-échangeable. Nos résultats expliquent pourquoi les résidents domestiques sont généralement opposés à l’immigration peu qualifiée et favorisent l’influx des immigrés hautement qualifiés. Dans le chapitre trois, nous faisons une extension du modèle élaboré dans le chapitre deux, en prenant en compte les flux internationaux du capital. D’abord nous cherchons à décrire le lien entre la migration peu et hautement qualifiée et les investissements directs à l’étranger. Puis, nous analysons le changement dans les attitudes envers l’immigration suite à l’introduction de la mobilité internationale du capital. Dans le quatrième chapitre, nous démontrons comment la diversité ethnique peut affecter les intentions d’émigrer. Nous traitons le cas de la Lettonie où les minorités ethniques constituent 40% de la population. Nous pouvons constater que les individus appartenant aux minorités ethniques sont plus probables d’émigrer et que cette probabilité augmente avec le revenu. Les individus appartenant à la majorité ethnique, au contraire, sont plus probables d’émigrer si leurs revenus sont plus basThe objective of this thesis is to contribute to a better understanding of migration-related economic issues in the world today. We concentrate both on immigration and emigration and at various stages of our work address all three parties involved in migration process : people hosting immigrants, people left behind and the migrants themselves. We account for several important features of today’s rapidly globalising life : the importance of the non-traded sector, asymmetry between capital and labour flows, and persisting problems between ethnic communities. The first chapter in an overview of the political economy of immigration literature and addresses the multiple ways in which immigrants may affect natives’ welfare. In particular, we discuss the role of economic and non-economic arguments in shaping immigration attitudes and summarise main labour market and welfare-state effects of immigration. Chapter two develops open economy with a non-traded sector. Our finding provide additional understanding of why native population is generally opposed to low-skilled immigrants and favouring high-skilled foreign workers. The third chapter extends the model developed in chapter two to accommodate internationally mobile capital. First, we investigate whether immigration of high-skilled and low-skilled labour leads to positive or negative FDI. Then, we find out how would immigration attitudes change if a country allows international capital movements. Chapter four investigates how ethnic diversity at home may influence emigration intentions of an individual. We explore the case of Latvia where ethnic minorities constitute 40% of the population. We find that ethnic minorities are more likely to emigrate and are positively self-selected on the basis of income, while the opposite is true for ethnic majority population
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Soares, Richard Queirós. "OTT TV services: technical and economic aspects." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12846.
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Mestrado em Engenharia Eletrónica e TelecomunicaçõesThe breadth of availability and variety of online video contents has helped to encourage a far more mobile experience, which has proved particularly popular among younger generations. Over The Top (OTT) services, particularly those on-demand video platforms, became more and more attractive to consumers when compared with the current main TV packages. This document describes how the video OTT Ecosystem works from a technical side. The description presented reaches both ends of the distribution chain: from how the video signals are acquired and processed, thru all the way to how they are delivered to the client, passing by the challenges and consequences that such services have on the network. The main objective of this dissertation is to understand the possibility to create in Portugal a new operator where the core business is video delivery using only OTT services.
A amplitude e variedade de conteúdos disponíveis online têm ajudado a promover uma experiência cada ver mais móvel da televisão, serviço que se tem revelado particularmente popular entre os mais jovens. Serviços Over The Top (OTT), sobretudo aqueles disponíveis através de plataformas de video on-demand, têm-se tornado cada vez mais atraentes para os consumidores, em comparação com os atuais pacotes de televisão. Este documento descreve como funciona, do ponto de vista técnico, o ecossistema do vídeo sobre OTT. A descrição apresentada abrange ambas as extremidades da cadeia de distribuição: desde a forma como os sinais de vídeo são adquiridos e processados até ao modo como eles são entregues ao cliente, passando pelos problemas e consequências que tais serviços podem ter na rede. O principal objectivo deste trabalho é contribuir para compreender se é possível criar em Portugal um novo operador onde o core business seja a distribuição de vídeo utilizando apenas serviços OTT.
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Hietasalo, P. (Pauliina). "Behavioral and economic aspects of caries control." Doctoral thesis, Oulun yliopisto, 2010. http://urn.fi/urn:isbn:9789514263453.
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Abstract The aim was to determine the association between baseline factors, such as oral health-related behavior, attitudes, knowledge and beliefs in relation to caries increment during a randomized clinical trial (RCT). A further aim was to evaluate treatment costs and health outcomes during and after the RCT. In Pori Finland, 11- to 12-year-old children with active initial caries lesion(s) participated in the RCT in 2001–05. The experimental group (n=250) received multiple measures for controlling caries. The control group (n=247) received standard dental care. In 2005–08, all received standard dental care. Regression analyses were used to study the associations between behavioral factors and caries increment. Cost-effectiveness analysis was conducted (trial period), and costs and health outcomes as well as dental service utilization were evaluated (post-trial period). In the experimental group, brushing teeth twice a day was indicative of developing no new caries lesions, whereas eating candy at least once a day, predicted new lesions. In the experimental and control groups, lack of concern about cavities and lack of knowledge about mother’s dental health predicted new caries lesions. The average incremental cost for averting one DMF surface was €34. The experimental regimen was more effective and more costly than the standard dental care. The total costs decreased year after year. The mean total cost per adolescent was lower and the clinical outcome was better among the former participants in the experimental group. The utilization of dental services was significantly more regular among the former participants in this group. It may be feasible to control caries more effectively by affecting toothbrushing, candy eating and oral health-related attitudes, as preventive procedures may be ineffective if those factors are not in order. It is important to discuss oral health-related topics in families, because this may improve the oral health-related behavior of children. Cost-effectiveness of regimen used for the experimental group may be improved by division of work or by selective reduction of preventive procedures. Well-timed caries control can decrease treatment cost and yield long-term improvement of dental healthTiivistelmä Tutkimuksen tarkoituksena oli selvittää satunnaistetun kliinisen kokeen alussa rekisteröityjen suunterveyteen liittyvien tapojen, tietojen, asenteiden, uskomusten ja karieskertymän välisiä yhteyksiä. Lisäksi arvioitiin hoitokustannuksia ja hoidollisia tuloksia sekä kokeen ajalta että kokeen jälkeiseltä ajalta. Ne 11–12-vuotiaat lapset, joilla oli ainakin yksi alkava aktiivinen kariesvaurio, osallistuivat kokeeseen Porissa vuosina 2001–05. Koeryhmän lapset (n=250) saivat tehostettua ehkäisevää hoitoa ja kontrolliryhmän lapset (n=247) tavanomaista hammashoitoa. Kaikki saivat tavanomaista hammashoitoa vuosina 2005–08. Käyttäytymisellisten tekijöiden ja karieskertymän välisiä yhteyksiä tutkittiin regressioanalyysien avulla. Kustannusvaikuttavuusanalyysi tehtiin kokeen ajalta. Hoitokustannuksia ja hoidollisia tuloksia sekä palveluiden käyttöä arvioitiin kokeen jälkeiseltä ajalta. Lapsilla, jotka harjasivat vähintään kaksi kertaa päivässä, oli yleensä ehjät hampaat, kun taas lapsilla, jotka söivät päivittäin makeisia, oli useasti reikiä. Huolettomuus reikiintymistä kohtaan ja tietämättömyys äidin hampaiden kunnosta näkyi lasten hampaiden reikiintymisenä. Yhden hammaspinnan säästyminen paikkaukselta maksoi keskimäärin 34 €. Koeryhmän saama hoito oli vaikuttavampaa, mutta kalliimpaa kuin kontrolliryhmän saama hoito. Kokonaiskustannukset laskivat vuosi vuodelta. Keskimääräiset hoitokustannukset olivat pienemmät ja hammasterveys parempi entisen koeryhmän jäsenillä kuin kontrolliryhmäläisillä. Myös palveluiden käyttö oli säännöllisempää koeryhmässä. Karieksen hallintaa voidaan todennäköisesti tehostaa vaikuttamalla hampaiden harjaukseen, makeisten syöntiin ja suunterveyteen liittyviin asenteisiin. On tärkeää varmistaa, että nämä asiat ovat kunnossa, koska ehkäisevät toimenpiteet saattavat muuten jäädä tehottomiksi. Suunterveyteen liittyvistä asioista olisi hyvä keskustella perheissä, koska asioiden esillä pitäminen voi vaikuttaa suotuisasti lasten terveystapoihin. Koeryhmän saaman hoito-ohjelman kustannusvaikuttavuutta voisi todennäköisesti parantaa muuttamalla suunterveydenhuollon henkilöstön työnjakoa tai karsimalla valikoiden ehkäisevien toimenpiteiden määrää. Oikea-aikainen karieksen hallinta voi vähentää hoitokustannuksia ja lisätä hammasterveyttä pitkällä aikavälillä
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Agrawal, Ajay K. "Economic issues concerning the mobility of scientific inventions and implications for firm strategy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0013/NQ56491.pdf.
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Politi, Ricardo Batista. "Aspectos concorrenciais no mercado de leite fluido: um teste empírico no município de São Paulo." reponame:Repositório Institucional do FGV, 2006. http://hdl.handle.net/10438/2019.
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Previous issue date: 2006-09-05T00:00:00ZThe main purpose of this work is to characterize competition in the fluid milk market (long-shelf and pasteurized milk) in São Paulo considering evidences from retail price movements and market margins. It was applied the model proposed by Houck (1977) including the changes latter suggested by Carman and Sexton (2005). This approach separates the explanatory variables between price increases and price decreases paid to milk producers. This analysis allows to compare the different lags movements between prices increases and decreases and to study agents’ pricing strategies. Data ranges from December 1999 to December 2005, including milk retail price (source FIPE) and milk producer price (source CEPEA/USP). It is possible to conclude that competition in the long shelf market is different from the competition in the pasteurized milk market. Whereas in the long shelf market competition is closer to the perfect competitive market, the pasteurized market is far from competitive. To better understand these differences, it was considered the geographical relevant market and the retail area influence. The results allow some inferences for sector analysis and for public policies concerning the milk chain. The huge increase in the long shelf sales, when it has taken a major share in the fluid milk market, it has brought a higher competition in the processing and distribution milk industry, as long as a faster decrease price transmission to the consumer level. However, the mark-up pricing strategy on the retail level, as observed at the long shelf milk, reveals that at processor and at distribution level the industry has some market power. As a consequence price increases movements are higher transmitted at absolute level to the consumer marke.
O objetivo deste trabalho é caracterizar o padrão de concorrência no mercado de leite fluido (longa vida e pasteurizado) na cidade de São Paulo a partir de evidências sobre os movimentos de preços no varejo e do comportamento das margens de mercado. Utilizou-se o modelo originalmente proposto por Houck (1977) acrescido das observações feitas por Carman e Sexton (2005). Essa abordagem separa as variáveis explicativas entre aumentos e diminuições de preços pagos ao produtor. Além de maior clareza na sua estrutura, essa construção permite comparar a defasagem entre esses dois movimentos e estudar a estratégia de preços dos agentes a partir das margens dos intermediários. O período analisado foi de dezembro de 1999 à dezembro de 2005, com dados de preços ao consumidor da FIPE e dados de preços ao produtor da CEPEA/ USP. Identificou-se que o padrão de concorrência do leite longa vida é bastante diverso do encontrado para o leite pasteurizado. Enquanto para o longa vida o padrão de concorrência é mais próximo do modelo competitivo, para o leite pasteurizado o padrão encontrado foi de pouca concorrência. Para compreender essas diferenças, foi discutido o aspecto locacional do varejo e a importância do mercado relevante geográfico. Os resultados permitem algumas inferências para análises setoriais e de políticas públicas voltadas à produção leiteira. O vertiginoso crescimento das vendas de leite longa vida, absorvendo grande parte do mercado antes abastecido pelo leite pasteurizado, trouxe maior concorrência nos segmentos de indústria e distribuição, assim como maior velocidade de transmissão de preços ao longo da cadeia produtiva. Entretanto, a precificação com markups com percentual fixo, observada no leite longa vida, indica que indústria e distribuição gozam de algum poder de mercado e que variações de custo da matéria-prima são repassadas mais que proporcionalmente, em termos absolutos, ao consumidor final.
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Gonçalves, Juliano Leonel. "Impact of subclinical mastitis on milk yield and economic return of dairy cows." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-03052017-151813/.
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The general objectives of the present thesis were to evaluate: (i) the effects of subclinical mastitis (SM) caused by major pathogens on SCC, milk leukocyte differentials (MLD) and milk yield; (ii) milk yield losses caused by SM at the cow and quarter level; and (iii) the economic impact of SM caused by major pathogens. The thesis was structured in four studies. In study 1, quarter milk samples (n = 302) from 78 cows with SCC gt;200,000 cells/mL were analyzed by milk leukocyte differential (MLD) methodology and by microbiological culture (MC). Quarters with positive-culture results were obtained from 102/156 (65.4%) of MLD-positive milk samples, while 28/135 (20.7%) of MLD-negative milk samples were MC-positive. When MC was considered the gold standard for mastitis diagnosis, the sensitivity (Se) of the MLD was 65.4% (IC95% = 57.4 to 72.8%) and the specificity (Sp) was 79.3% (IC95% = 71.4% to 85.7%). In conclusion, the use of the MLD on cows with monthly composite SCC > 200×103 cells/mL for screening at quarter level identified quarters more likely to be culture-positive. In study 2, the effect of different pathogens was evaluated by comparison of contralateral (healthy and infected) mammary quarters of 146 lactating cows. The impact of SM on economic return (quarter milk yield × milk price) was determined by applying milk payment estimates on milk collected from healthy versus infected glands. The milk losses ranged from 0.07 Kg/quarter.milking to 2.9 Kg/quarter.milking, and varied according to the pathogen causing SM. Economic losses were higher for SM caused by Enterococcus spp. (US$0.43/quarter.milking), Strep. Dysgalactiae (US$ 0.74/quarter.milking) and E. coli (US$0.98/quarter.milking). Additionally, there was a trend for Staph. aureus and Citrobacter spp. To induce economic losses of US$ 0.26 and 0.29/quarter.milking, respectively. In general, the economic return was lower in quarters with SM caused by environmental and contagious pathogens (US$ 0.18 and 0.22/quarter.milking, respectively) when compared to their healthy contralateral quarters. In study 3, a total of 146 out of 650 lactating cows were selected from seven dairy herds for having composite milk SCC > 200,000 cells/mL in combination with the isolation of a major mastitis pathogen. From these selected cows, 1,436 quarter milk samples were collected during three successive sampling occasions at intervals of 15-20 days. Quarter milk yield was measured by milking the mammary quarters individually using three successive milk samplings over time. Bacterial isolates were identified by microbiological culture, MALDI-TOF MS and partial sequencing of the 16S rRNA gene. Milk losses and economic returns varied according to the type of mastitis-causing pathogen: 0.24 to -0.87 kg/quarter.milking for environmental streptococci, and -1.57 to -1.69 kg/quarter.milking for Staph. aureus. Overall, mammary quarters that were cured from SM caused by Staph. aureus and environmental streptococci exhibited an increase in economic return of approximately 0.47 and 0.69 US$/quarter.milking, respectively. In study 4, test day records (n = 1,200,002) were obtained from the Paraná State Holstein Association, which included data from 92,560 lactating cows, from 781 herds, from January 2010 to December 2015. A segmented regression was fitted to estimate the cut-off point of Log10SCC scale where milk yield started to be affected by mastitis: 0.90 (~7,963 cells/mL). In conclusion, first lactation cows have a reduction of 1.37 to 2.28 kg/cow/d of milk yield for each increase of one unit of Log10SCC over the cutoff point, whereas second and later lactation cows are expected to have milk yield losses of 2.36 to 4.20 kg/cow/d for each unit increase of Log10SCC over the cutoff point. Overall, the results of this thesis indicated that milk losses depend on the type of pathogen causing SM. Major pathogens have showed greater effects on milk quality than when it was observed using the approach of culture results of negative or positive. The methodology for evaluation of subclinical mastitis effect on milk yield interferes in the estimation of milk losses, and should include factors such as DIM and number of parity.Os objetivos gerais da tese foram avaliar: (i) os efeitos da mastite subclínica (MS) causada por patógenos primários sobre a CCS, contagem diferencial de células e produção de leite; (ii) perdas de produção de leite ocasionadas pela MS, em nível de vacas e quartos mamários; e (iii) o impacto econômico da MS causado por patógenos primários. A tese foi estruturada em quatro estudos. No estudo 1, amostras de leite de quartos mamários (n = 302) foram submetidas a cultura microbiológica (CM) e contagem diferencial de leucócitos (MLD). Quartos com resultados cultura-positiva apresentaram 102/156 (65,4%) amostras de leite MLD-positivas, e 28/135 (20,7%) das amostras de leite MLD-negativas tiveram CM-positivas. Quando a CM foi considerada o padrão-ouro para o diagnóstico da mastite, o diagnóstico por meio da MLD apresentou sensibilidade (Se) de 65,4% (IC95% = 57,4 a 72,8%) e especificidade (Sp) de 79,3% (IC95% = 71,4% a 85,7%). Em conclusão, o uso da MLD em vacas com CCS mensal > 200,000 células/mL para triagem de quartos identificou os mais prováveis de ser cultura-positivos. No estudo 2, o efeito de diferentes tipos de patógenos foi estudado avaliando pares de quartos mamários contralaterais (sadios e infectados) de 146 vacas em lactação. O impacto da MS sobre o retorno econômico (produção de leite × preço do leite) foi determinado pela aplicação de estimativas de pagamento do leite de quartos sadios e infectados. As perdas de leite variaram de 0,07 Kg/quarto.ordenha a 2,9 Kg/quarto.ordenha de acordo com o patógeno causador de MS. As perdas econômicas foram maiores em casos de MS causados por Enterococcus spp. (US$ 0,43/quarto.ordenha), Strep. dysgalactiae (US$ 0,74/quarto.ordenha) e E. coli (US$ 0,98/quarto.ordenha). Além disso, houve uma tendência de Staph. aureus e Citrobacter spp. ocasionar perdas de US$ 0,26 e 0,29/quarto.ordenha, respectivamente. Em geral, o retorno econômico foi menor em quartos com MS causada por patógenos ambientais e contagiosos (US$ 0,18 e 0,22/quarto.ordenha, respectivamente) quando comparados com os quartos contralaterais sadios. No estudo 3, um total de 146 das 650 vacas em lactação foram selecionadas de sete rebanhos por apresentar amostras compostas de leite com alta CCS (> 200.000 células/mL) e isolamento de patógeno primário causador de MS. Destas vacas selecionadas, 1.436 amostras de leite de quartos foram coletadas durante três amostragens sucessivas com intervalos de 15-20 dias. A produção de leite em nível de quartos mamários foi mensurada por meio de ordenha completa e individual. Os isolados bacterianos foram identificados por CM, MALDI-TOF MS e sequenciamento parcial do gene 16S rRNA. As perdas de leite e os retornos econômicos variaram de acordo com o tipo de patógeno causador da mastite: - 0,24 a -0,87 kg/quarto.ordenha (Streptococcus ambientais) e -1,57 a -1,69 kg/quarto.ordenha (Staph. aureus). Em geral, os quartos mamários que apresentaram cura da MS causada por Staph. aureus e Streptococcus ambientais apresentaram aumento no retorno econômico de aproximadamente 0,47 e 0,69 US$/quarto.ordenha, respectivamente. No estudo 4, registros do controle leiteiro (n = 1.200.002) foram obtidos da associação Paranaense do gado Holandês, os quais incluíram dados de 92.560 vacas Holandesas em lactação de 781 rebanhos, de janeiro de 2010 a dezembro de 2015. Uma regressão segmentada foi ajustada para estimar o ponto de corte na escala Log10CCS em que a produção de leite começou a ser afetada pela MS: 0.90 (~ 7.963 células/mL). Como conclusão, vacas de primeira cria apresentaram redução de 1,37 a 2,28 kg/vaca/dia na produção de leite para cada aumento de uma unidade Log10CCS acima do ponto de corte, enquanto vacas com duas ou mais crias apresentaram perdas de 2,36 a 4,20 kg/vaca/dia. Em geral, os resultados desta tese indicaram que as perdas de leite dependem do tipo de patógeno que causa SM. Os patógenos primários mostraram maiores efeitos sobre a qualidade do leite do que quando foram observados pela abordagem com base nos resultados de cultura negativa ou positivos. A metodologia de avaliação do efeito da mastite subclínica sobre a produção de leite interfere na estimativa das perdas de leite e deve incluir fatores como DIM e número de paridade.
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Allan, Catherine Louise 1958. "MATERNAL ATTITUDES ABOUT PROVIDING BREAST MILK FOR THE INTENSIVE CARE INFANT." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276377.
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Wong, Chi-kwong Patrick, and 黃志光. "Economic changes in rural China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31954509.
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Vigier, Adrien. "Essays on economic and social networks." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609482.
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Genc, Talat. "Some economic aspects of a restructured electricity industry." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/280472.
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This thesis examines several issues that arise in restructured electricity markets. These issues include production, scheduling and forward contract decision making, capital investment decisions in uncertain environments, and equilibrium bidding in wholesale electricity auctions. In the chapter, "Supply Function Equilibria with Pivotal Suppliers", we study the impact of pivotal suppliers in supply function bidding settings. Observers of these markets have noted the important role that pivotal suppliers, those who can substantially raise the market price by unilaterally withholding generation output, sometimes play. However the literature on SFE has not considered the potential impact of pivotal suppliers on equilibrium predictions. This is a potentially important deficiency of applications of SFE to electricity markets, given the large role that pivotal suppliers sometimes play in these markets. We formulate a model in which generation capacity constraints can cause some suppliers to be pivotal. In symmetric and asymmetric versions of the model we show that when pivotal suppliers are present, the set of SFE is reduced relative to when no suppliers are pivotal. In the chapter, "Dynamic Oligopolistic Games Under Uncertainty: A Stochastic Programming Approach", we study several stochastic programming formulations of dynamic oligopolistic games under uncertainty. It is well known that if the number of state variables increases, dynamic programming becomes computationally intractable. For such games, we show that under certain symmetry assumptions, players earn greater expected profits as demand volatility increases. The key to our approach is the "scenario formulation" of stochastic programming. The examples presented in this paper illustrate that this approach can address dynamic games that are clearly out of reach for dynamic programming, the common approach in the literature on dynamic games. In the chapter, "Scenario-based Electricity-Gas Forward and Spot Pricing and Load Formulations", we propose load models and price and return formulations in specific energy markets. Existing energy models do not consider inter-relations between the trio: spot price, derivative price and electric load. Also these models, which are in the spirit of the models proposed in financial and commodity markets, ignore special characteristics of electricity, which may make the proposed models useless. In our formulations we consider these characteristics and correlations between these variables. Simulation results that we run support our modeling approaches.
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文玉蘭 and Yuk-lan Catherine Man. "Cyanide waste management: technologies, economic aspects, and constraints." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31253507.
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Willekens, Marleen. "Economic aspects of audit regulation and auditor liability." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/36143/.
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This thesis provides one of the first (to the author's knowledge, the first) micro-economic analyses of audit regulation and auditor liability. The analysis draws on insights from the economics and law literature that liability and regulation affect behaviour of individuals and organisations. The major research questions addressed in the thesis are the following: 1) How is demand for external audit services affected by joint and several liability of directors and external auditors? 2) How do auditor liability and professional audit standards affect audit quality? 3) Is it in the public interest to use auditor liability and professional audit standards jointly to monitor audit quality? The analysis is general, in the sense that a number of alternative regulatory scenarios are considered, and therefore hopes to be of relevance to various legal environments. Propositions about audit demand and production behaviour are drawn, as well as corollaries about the welfare implications of audit regulation and liability. Some major conclusions from the economic analysis are the following. 1) Consistency in judicial reasoning should be promoted. Certainty about what constitutes 'due care' leads to compliance by directors and auditors. 2) Uncertainty about due care crucially affects behaviour, both of auditors and directors. 3) Liability insurance arguments are irrelevant for audit demand when the due care level for directors is fairly certain. 4) Statutory audit requirements should only be imposed under limited circumstances. 5) More prescriptive professional audit standards have a positive effect on audit quality, but one standard for all client situations can never lead to social efficiency. 6) Liability restriction has a negative effect on audit quality. It may however promote socially efficient behaviour when there is overproduction of audit quality. 7) The joint use of liability restriction and more prescriptive professional audit standards may lead to a status quo in terms of audit quality produced, and therefore not welfare improving.
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Doyle, C. "Some intertemporal and informational aspects of economic theory." Thesis, University of Warwick, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383632.
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Novais, Joana Lobo Fernandes. "Economic and engineering aspects of disposables-based bioprocessing." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270590.
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Man, Yuk-lan Catherine. "Cyanide waste management : technologies, economic aspects, and constraints /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17665346.
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Mani, Kevin. "Abdominal aortic aneurysm epidemiological and health economic aspects /." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-110810.
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Penn, Simon Andrew Christopher. "Social and economic aspects of fourteenth century Bristol." Thesis, University of Bolton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.731703.
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Fisher, Hayley Claire. "Essays in the economics of marriage, cohabitation and divorce." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609754.
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Millar, Timothy Marc. "Novel aspects of the activity and function of xanthine oxidase." Thesis, University of Bath, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311326.
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Paudel, Lok Nath. "Sustainable increase in buffalo milk production farmers' preferences, performance and gender aspects in Nepal." Göttingen Cuvillier, 2009. http://d-nb.info/993674135/04.
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Khaskheli, Muhammad. "Some aspects of the production and quality improvement of fermented milk/cereal mixture (Kishk)." Thesis, University of Glasgow, 1998. http://theses.gla.ac.uk/38917/.
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Kishk is a very popular dried fermented milk/cereal mixture consumed in many countries of the world. The manufacture of Kishk is based on traditional methods, and may differ from one region to another. In the present study, the following aspects were investigated: First, standardising the production of laboratory-made Kishk; after using different ratios of wheat Burghol and yoghurt, a ratio of 1:4 was found to be suitable. Second, evaluating the compositional quality of Burghol made from different varieties of oats and barley, and the effect of these cereals on the overall characteristics of Kishk. Third, assessing the quality of Kishk using different cereals (porridge oats, oats flour, wheat flour, Burghol and Burghol flour), yoghurt, acidulant and/or 'milk'. Burghols from different varieties of barley and oats were prepared in a similar manner to that for the production of wheat Burghol. The traditional cracking process was successful for barley and oats, but difficulties were experienced in the separation of husk from the oats product. The chemical composition of the parboiled 'cracked' cereals were compared with that of the original grains, and with wheat Burghol. In all, the proximate composition (i.e. fat, protein and ash) of the parboiled 'cracked' products were reduced compared to the original cereals. Sensory evaluation of these Kishks could be summarised as follows: First, Kishks made with different cereal Burghols (oats, barley or wheat) were differentiated by the type of cereal used. Second, the flavour of Kishk made with different cereals (oats and wheat), yoghurt, GDL and 'milk' were different. Most of the odour, flavour, after-taste and mouth feel characters have differentiated the Kishk according to the type of 'dairy' base used. The perceived mouth feel characters (chalky, sticky, slimy) differentiated the Kishk according to the type and particle size of cereals (e.g. porridge oats, oats flour, wheat Burghol or wheat flour) used. Third, Kishk made with different wheat products (Burghol, Burghol flour or wheat flour) was also differentiated by the particle size. Fourth, wheat flour-based Kishk was perceived to have better mouth feel characters followed by Burghol flour- and Burghol-based Kishk. Yoghurt/Burghol or wheat flour mixtures were studied during the secondary fermentation period (0, 48, 96 and 144 h), and the influence of particle size of the cereal was evident on the β-amylase and proteolytic activities. Burghol-based mixture had the highest β-amylase content/activity and wheat flour the lowest, whilst the non-protein nitrogen compounds content was higher in wheat flour than the Burghol-based mixture after 144 h. The degradation of starch in all these mixtures was almost linear during the secondary fermentation period. This appeared to be influenced by the interactions between the starch and other components such as protein, lipids and polyphenols to make the starch resistant to enzymatic degradation. The release of enzyme inhibitors such as phytic acids during the secondary fermentation period may also have interfered in the recovery of the starch during analysis. The microstructure of cereal (Burghol or wheat flour)/yoghurt or whey from yoghurt mixture suggest that physical change in starch granules occurred rather than degradation.