3,264 research outputs found

    Optimal location of consumer facilities within a city

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    FIELD CROP SUBSECTOR STRUCTURE AND COMPETITION UNDER FREE TRADE: CANADA

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    Crop Production/Industries, International Relations/Trade,

    China's Melamine in Milk Scandal: Failures All Around

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    Agricultural and Food Policy, Livestock Production/Industries,

    IMPACTS OF GLOBAL WARMING ON CROPPING PRACTICES IN ALBERTA

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    A Target MOTAD farm-level model was developed to assess the expected impacts from global warming on representative grain and oilseed farms in Alberta. It was found that a warmer climate would increase crop yields and length of the cropping season. Net returns and shadow values of land would increase substantially. Price risk generally was more important than yield risk under simulated warmer climates.Environmental Economics and Policy,

    THE RELATIONSHIP BETWEEN PRICE STABILIZATION AND CYCLES IN THE CANADIAN WHEAT MARKET

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    In this study, moving average price stabilization schemes were analyzed under the assumption of rational expectations. It was shown that moving average price schemes may induce cyclical behavior into market prices where no cyclical pattern previously existed. Moving average price stabilization schemes are important to Canadian agricultural policy analysis because they are a characteristic of stabilization programs in Canada. Indeed, the Agricultural Stabilization Act, introduced in 1975, and the Gross Revenue Insurance Program, introduced in 1991, use moving average prices to calculate returns to producers.Demand and Price Analysis,

    Water for Life Strategy in Alberta: Changing Priorities in Canadian Water Policy?

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    Water resources are being stretched to the limit in Alberta and irrigation activities account for more than 70 percent of consumptive water use in the province. Conflicts among users and potential users may be looming. Pollution of surface water and groundwater and outbreaks of water-borne pathogens have been increasing. Freshwater systems are likely to deteriorate further with impending climate change. Following passage of the Alberta Water Act in 1999 and the Irrigation Districts Act in 2000, which allowed limited transfers of water among water users, the Alberta government issued its Water for Life Strategy in late 2003. The strategy’s principal goals include (1) evaluation of the use of economic instruments to manage water demand by 2007; (2) demonstration of best management practices by 2010; and (3) a 30 percent increase in productivity and efficiency over 2005 levels by 2015. This seems to presage a new era in water management in Alberta, but will the necessary changes in water management be forthcoming? This study examines the need for demand-based management and the constraints that make effective changes in water policy problematic. Evidence from a recent study in the St. Mary’s River Irrigation District highlights problems with water markets.Environmental Economics and Policy,

    Controlling Terahertz Radiation - Novel Fabrication Methods and Materials for Terahertz Components

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    The interaction between light and matter has been a field of research for centuries, from the days of Sir Isaac Newton in the 17th century up to today, where new effects, such as plasmonics open up new applications or the extension of the accessible electromagnetic spectrum, are still engaging scientists and engineers in this field of research. The understanding of the interaction between light, or more general: electromagnetic radiation and matter is a crucial step in the development of components which give the necessary control to gain access to the desired part of the electromagnetic spectrum. One of the less developed parts of the electromagnetic spectrum is terahertz (THz) radiation. THz radiation promises many applications, from spectroscopy for material and medical applications to communication technology. But, so far, most applications have not managed to overcome the experimental status, mostly because of missing materials and manufacturing methods suitable for the required length scales and material properties in the terahertz regime. This thesis focuses on structures for the control of THz radiation. To do so, and to overcome the natural limitations of many materials in the THz region, new materials and modern fabrication techniques are used to find new ways to overcome the shortage of readily available components for this part of the electromagnetic spectrum. As such, ceramics and polymers are used for various components, from lenses to spoof plasmonic waveguides, fabricated with a variety of techniques, including 3D printing and micro-milling. Finite-Difference Time-Domain simulations are used for the design of all structures. The ultimate goal is to demonstrate low-cost methods to produce THz components for future industrial implementation

    Alberta's Water for Life Strategy: Some early indications of its acceptance by the irrigation industry in Southern Alberta

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    Water is essential for sustainable agricultural development - for irrigation of crops, livestock watering, processing, and sustaining farm families. Agriculture uses 71 percent of all water diverted for consumptive use in Canada (Environment Canada, 2004), and is by far the greatest water consumer in Canada. In the absence of a Canadian national water strategy, Alberta has developed a long-term water management plan called the Water for Life Strategy. Its successful implementation will depend largely on the participation of irrigators. This study explores the reaction of irrigators to one of the strategy's main goals - a 30 percent increase in water use efficiency and productivity by 2015 over 2005 levels. The study reveals that irrigators vary significantly in their views as to the extent to which this goal can be reached, and the means by which it should be achieved within agriculture. Further, these responses reflect differences among irrigation districts relating to the extent of water stress, on-farm irrigation water efficiency and natural factors that limit crop diversity in some areas. Ultimately the government may have to revise its 30 percent target and tailor the strategy to irrigation districts as opposed to a broad-based approach.Resource /Energy Economics and Policy,
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