276 research outputs found

    Choosing the right liming material

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    Urban weeklies: what needs do they fulfill (A case study of the city of East Providence, Rhode Island where two weeklies survive in the shadow of the state's largest daily newspaper)

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    Thesis (M.S.)--Boston UniversityStatement of the problem: Why do urban weeklies exist in the very shadow of a daily newspaper? How can urban weeklies survive within the circulation of a strong daily? What is the appeal of the weeklies? What needs are they fulfilling that the daily newspaper does not or cannot afford to fulfill? Purpose of this study: The findings of this thesis are based on a thorough study of the newspaper situation in East Providence, Rhode Island, a city of 40,000 where two weeklies publish despite the Evening Bulletin of nearby Providence which is the daily newspaper for 95 per cent of the residents of East Providence. The conclusions of this thesis are considered applicable for the community that has blossomed into an urban center as the outgrowth of a larger metropolitan area and which has developed a community press within the circulation area of an established daily. This study is intended to reflect the basic appeals the urban weekly holds for the residents of such a community. Scope and Method of research: The findings of this study are based on interviews with 152 residents of East Providence. All interviews were I selected by methods of random sampling as set down by competent authorities. In addition, questionnaires were mailed to 250 subscribers of the weekly newspapers. Again, the sample was selected on a random basis. A comparison of the two methods of testing is made. Also both publishers of the weekly newspapers were interviewed to compare what they thought the weekly meant to the image held by the reader

    Future ultra-speed tube-flight

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    Future long-link, ultra-speed, surface transport systems will require electromagnetically (EM) driven and restrained vehicles operating under reduced-atmosphere in very straight tubes. Such tube-flight trains will be safe, energy conservative, pollution-free, and in a protected environment. Hypersonic (and even hyperballistic) speeds are theoretically achievable. Ultimate system choices will represent tradeoffs between amoritized capital costs (ACC) and operating costs. For example, long coasting links might employ aerodynamic lift coupled with EM restraint and drag make-up. Optimized, combined EM lift, and thrust vectors could reduce energy costs but at increased ACC. (Repulsive levitation can produce lift-over-drag l/d ratios a decade greater than aerodynamic), Alternatively, vehicle-emanated, induced-mirror fields in a conducting (aluminum sheet) road bed could reduce ACC but at substantial energy costs. Ultra-speed tube flight will demand fast-acting, high-precision sensors and computerized magnetic shimming. This same control system can maintain a magnetic 'guide way' invariant in inertial space with inertial detectors imbedded in tube structures to sense and correct for earth tremors. Ultra-speed tube flight can complete with aircraft for transit time and can provide even greater passenger convenience by single-model connections with local subways and feeder lines. Although cargo transport generally will not need to be performed at ultra speeds, such speeds may well be desirable for high throughput to optimize channel costs. Thus, a large and expensive pipeline might be replaced with small EM-driven pallets at high speeds

    Better lawns

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    Analyses of West Virginia Soils : Second Report

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    Analyses of One Hundred West Virginia Soils

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    The Residual Effects of Fertilizers

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    Methods in Soil Analysis

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    Timothy culture

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