1,879 research outputs found

    A Yearly Food Plan for South Dakota Farms

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    In this circular, created by the Agriculture Extension Service at South Dakota State College, the information provided includes techniques in managing ones farm budget in regards to their yearly food plan. This information is provided through the guidance of the Agriculture Department during the year 1934

    Alfalfa For Livestock

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    Alfalfa is truly a wonderful crop; a hardy, deep-rooted, long-lived, drought resistant legume plant; a nearly perfect forage; a very important crop for all parts of South Dakota. Alfalfa should be a permanent crop on every South Dakota farm. There is no crop that farmers can grow that will return as high an acre value for the labor expended upon it. Alfalfa has no superior as a hog pasture. It will withstand dry weather and in addition, it will furnish green feed over a longer period than any other legume. As it is a source of cheap, homegrown protein-both as hay and pasture-it has a very important part to play in the production of low-cost livestock. It is not to be considered as a crop for rotation purposes, as a good stand of alfalfa should last at least six or seven years. With two or three cuttings each year, an abundant crop can be realized from a single seeding. It is an important soil builder. Eastern South Dakota contains an average of only 6112 acres per farm. Considering its many profitable uses, this is entirely too small an acreage of this valuable crop. The amount that should be grown on each farm will depend upon the size of the farm and the number of livestock kept. Renters should insist on a sma11 acreage at least, and far-sighted landlords cannot help but come to the conclusion that it is a valuable addition to their property

    County Extension Work in South Dakota

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    County extension work in South Dakota is now completing its 15th year, under the Smith-Lever bill passed by Congress in 1914. Those 15 years have seen many changes and developments in the farming and farm home-making of the state, and for many of these changes and improvements county extension work has been largely responsible. To acquaint readers with what the county service is now doing and planning to do toward making our farms and rural communities better and more profitable places to live, this circular is published. In addition to presenting a brief summary of activities during 1928, a plan for greater service in the future is reviewed. The past is of interest because of lessons learned and achievements recorded, but the future, with its greater challenges and its growing demand for solutions of new and complicated problems, holds our attention. It is hoped that this circular may enable the reader to visualize some of the future trends in South Dakota farming. Results of past years will serve as a measuring stick. They also give emphasis to the fact that cooperation, leadership, and careful thought are necessary factors in utilizing the extension service for the greatest benefit to South Dakota agriculture

    Sweet Clover for Profit

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    Sweet Clover was once considered only as a weed, but now it is held a very valuable crop. This deep-rooted, vigorous-growing, hardy, biennial legume surely has a place on South Dakota farms. It has no equal as a combined soil-building, weed-fighting, pasture and hay crop

    Available Agricultural Engineering Circulars and Blue Print Plans

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    The plans listed in this circular are not for elaborate and expensive buildings. Most of them are for plain substantial, well proportioned, serviceable buildings, designed for the owner of the farm: No particular claim for originality is made in the design, of these buildings as the best ideas of construction have been freely taken from other plans from practically every state in the Union. Particular effort has been made to design these buildings so that they are uniformly strong. If a building is built stronger in one place than it is in another, lumber is wasted. (See more in text.

    Flax Facts

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    The flaxseed situation in the United States has been unusual from 1909 to the present in that production has averaged slightly less than half of the consumption, although the acre income from flax in North Dakota, Minnesota, and South Dakota has been fairly consistently higher than that for spring wheat or oats. This relationship has held notwithstanding the all-too-general practice among farmers of sowing spring wheat and oats early on the best land and leaving the flax seeding until l ate on such land as may be left over

    Nested Rules in Defeasible Logic

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    Defeasible Logic is a rule-based non-monotonic logic with tractable reasoning services. In this paper we extend Defeasible Logic with nested rules. We consider a new Defeasible Logic, called DL^ns, where we allow one level of nested rules. A nested rule is a rule where the antecedent or the consequent of the rule are rules themselves. The inference conditions for DL^ns are based on reflection on the inference structures (rules) of the particular theory at hand. Accordingly DL^ns can be considered an amalgamated reflective system with implicit reflection mechanism. Finally we outline some possible applications of the logic

    Towards robust aero-thermodynamic predictions for re-usable single-stage to orbit vehicles

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    Re-usable single stage to orbit launch vehicles promise to reduce the cost of access to space, but their success will be particularly reliant on accurate and robust modelling of their aero-thermodynamic characteristics. For preliminary design and optimization studies, relatively simple numerical prediction techniques must perforce be used, but it is important that the uncertainty that is inherent in the predictions of these models be understood. Predictions of surface pressure and heat transfer obtained using a new reduced-order model that is based on the Newtonian flow assumption and the Reynolds analogy for heating are compared against those of a more physically-sophisticated Direct Simulation Monte Carlo method in order to determine the ability of the model to capture the aero-thermodynamics of vehicles with very complex configuration even when run at low enough resolution to be practical in the context of design optimization studies. Attention is focused on the high-altitude regime where lifting re-usable Single-Stage to Orbit configurations will experience their greatest thermal load during re-entry, but where non-continuum effects within the gas of the atmosphere might be important. It is shown that the reduced-order model is capable of reproducing the results of the more complex Monte Carlo formalism with surprising fidelity, but that residual uncertainties exist, particularly in the behaviour of the heating models and in the applicability of the continuum assumption given the onset of finite slip velocity on surface of vehicle. The results suggest thus that, if used with care, reduced-order models such as those described here can be used very effectively in the design and optimization of space-access vehicles with very complex configuration, as long as their predictions are adequately supported by the use of more sophisticated computational techniques

    Supplement to Flax Facts

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    In February, 1930, Flax Facts was published jointly as North Dakota Extension Circular 90, Minnesota Extension Special Bulletin 128, South Dakota Extension Circular 293 and Montana Extension Bulletin 107. This publication is available at the Agricultural College in each of these states and copies may be obtained by writing for them

    Available Agricultural Engineering Circulars and Blue Print Plans

    Get PDF
    The plans listed in this circular are not for elaborate and expensive buildings. Most of them are for plain, substantial, well proportioned, serviceable buildings, designed for the owner of the farm. No particular claim for originality is made in the design of these buildings as the best ideas of construction have been freely taken from other plans from practically every state in the Union. Particular effort has been made to design these buildings so that they are uniformly strong. If a building is built stronger in one place than it is in another, lumber is wasted. (See more in text.
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