2,102 research outputs found

    Endogenous Firm Objectives

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    We analyze the behavior of a monopolistic firm in general equilibrium when the firm's decision are taken through shareholder voting. We show that, depending on the underlying distribution, rational voting may imply overproduction as well as underproduction, relative to the efficient level. Any initial distribution of shares is an equilibrium, if individuals do not recognize their influence on voting when trading shares. However, when they do, and there are no short-selling constraints the only equilibrium is the efficient one. With short- selling constraints typically underproduction occurs. It is not market power itself causing underproduction, but the inability to perfectly trade the rights to market power.Imperfect Competition, Shareholder Voting, Politico Economic Equilibrium

    Surry [sic] Zoological Gardens

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    Print shows pond and people walking at the Surrey Zoological Gardens, London, England, with a balloon ascending in the distance. Print commemorates the 17th anniversary of the birth of Princess Victoria, May 24, 1836. (Source: A.G. Renstrom, LC staff, 1981-82.)Title from item."Printed and published in the Gardens, Monday & Tuesday, May 23d & 24th, 1836, in commemoration of H.R.H. the Princess Victoria's birth day"--printed below title.Tissandier collection

    [Orville Wright, Major John F. Curry, and Colonel Charles Lindbergh, who came to pay Orville a personal call at Wright Field, Dayton, Ohio. June 22, 1927]

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    Title from: Wilbur & Orville Wright, pictorial materials: a documentary guide / Arthur G. Renstrom. Washington: Library of Congress, 1982, p. 27.Attributed to Wilbur and/or Orville Wright.Forms part of: Glass negatives from the Papers of Wilbur and Orville Wright

    Climate policy: choosing the right instrument to reap an additional employment dividend

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    Climate protection should use environmental policy instruments that raise revenues, which can be used, for instance, to cut labour taxes to alleviate unemployment in economies suffering from high and persistent unemployment. This paper elaborates the possibilities of an employment dividend of climate policies and shows the potential importance of such a second dividend for a comprehensive cost-benefit analysis of climate policy. It is argued that national attempts to reap such a double dividend may be bound to fail if resource suppliers can respond in a way that leads to a large-scale international reallocation of environmental rents. Only a internationally coordinated uniform base tax on CO2 that complements already existing emission trading systems could keep revenues from climate policy in those countries bearing the cost of fighting global warming and thus leave them with the option on a second dividend. --Climate policy,double-dividend hypothesis,employment dividend,supplier responses

    From Silicon Cell to Silicon Human

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    This chapter discusses the silicon cell paradigm, i.e. the existing systems biology activity of making experiment-based computer replica of parts of biological systems. Now that such mathematical models are accessible to in silico experimentation through the World-Wide Web, a new future has come to biology. Some experimentation can now be done in silico, leading to significant discoveries of new mechanisms of robustness, of new drug targets, as well as to harder validations or falsifications of biological hypotheses. One aspect of this future is the association of such live models into models that simulate larger parts of the human body, up to organs and the whole individual. Reasons to embark on this type of systems biology, as well as some of the challenges that lie ahead, are discussed. It is shown that true silicon cell models are hard to obtain. Shortcut solutions are indicated. One of the major attempts at silicon cell systems biology, in the Manchester Centre for Integrative Systems Biology, is discussed in some detail. Early attempts at higher order, human, silicon cell models are described briefly, one addressing interactions between intracellular compartments and a second trying to deal with interactions between organs

    Stabilizing effects of ankle bracing under a combination of inversion and axial compression loading

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    The combined effects of bracing, axial compression and inversion rotation on the ankle-subtalar complexes were evaluated. Ex vivo tests under the load-controlled condition were performed on six cadaver ankle specimens using a six degree-of-freedom fixture. Inversion rotation was measured while subjecting the ankle-subtalar complex to a 2.5 N-m inversion moment and a combination of the testing variables (brace type, no brace, 178 N axial compression load, no compression load, 0° and 20° of plantar flexion) for a total of 16 tests per specimen. Three commercially available braces (two semirigid types and one lace up type) were evaluated. An axial compression load significantly decreased ankle-subtalar motion in unbraced ankles for the tested inversion moment. The contribution of bracing to stabilization of the ankle was smaller in the axial loading condition than in the no axial loading condition. The semirigid braces had greater stabilizing effects in response to the inversion moment than the lace up brace. Stabilizing effects of bracing were significantly greater in 20° of plantar flexion than in 0° of plantar flexion. The most common mechanism for an ankle sprain injury is inversion rotation on a weight-bearing ankle. Therefore, we should not overestimate stabilizing effects of bracing from evaluations of bracing without axial compression loading

    Analysis of transportation possibilities from a satellite mine to the Aitik processing site

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    The Aitik mine is the largest copper mine in Sweden. In the surrounding area several minor deposits have been found. If these deposits will be mined the ore can be handled in the concentrator of the Aitik mine, which means that the ore has to be transported to the Aitik mine. Transportation options of one of these satellite mines, 15 km away from Aitik, are investigated. This is based on a pre-feasibility study provided by Boliden. The transportation scenarios of nearby mines have been analysed in order to find similarities to the satellite mine. The similarities are as follows: the Renstrom mine is located 15 km from the concentrator, the ore of the Aitik mine has the same composition and pit of the Kaunisvaara project is in the same order of magnitude. Selection criteria are listed, involving limitations, environmental issues and economics. The criteria are listed from low influence to high influence: forest, animals, emission, shareholders, employees, transportation costs, profit, maximum weight and fragmentation size. Eight different transportation scenarios are listed based on these similarities and selection criteria. Two of these scenarios are further analysed. In these scenarios the ore is loaded on a mine ruck to the surface and further transported with highway trucks to the concentrator. One of these scenarios involves stockpiling before the ore is brought to the concentrator, this is found to be the best option. In this scenario 11 mine trucks with a payload of 50 tonnes, 16 mine trucks with a payload of 25 tonnes, 3 shovels, 1 wheel loader and 4 highway trucks are needed. The total costs of the mining and the transportation to the concentrator will be 36 SEK/tonnes, which is about 5.5 USD/tonnes. Further investigation can be done by changing the duration of the project, in order to conclude what this will do to the costs. One can also investigate what will happen when the equipment will break down and what will happen when the equipment will be leased from a contractor. Finally, the mining schedule and the amount of equipment need to be geared to each other.Resources EngineeringGeoscience & EngineeringCivil Engineering and Geoscience
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