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The state of the nation’s infrastructure is the subject of widespread discussion and comment because it is thought to include many deteriorating and unsafe bridges. Ever since the terrorist attacks of 9/11, there has been increasing concern over the extent to which an attack on infrastructure could result in serious economic disruption. This research develops a model to analyze the economic consequences of an attack on a major element of the highway network. We add a freight network to a national multiregional economic impact model and make freight traffic flows endogenous. The use of a sub-national interstate model recognizes that most infrastructure planning is at the state level and most political leaders’ interest is local. We base our approach on the National Interstate Economic Model (NIEMO) and refer to an elaboration that we name Transportation network and the National Interstate Economic Model (TransNIEMO). The new model enables us to study the state-specific and industry-specific economic impacts of some significant changes in the nature of highway freight movements. We tested the model for selected freight movements in and out of California. The results are entirely plausible and encourage us to elaborate and test the model for hypothetical disruptions of freight traffic throughout the US.  相似文献   
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The basic thesis of this exploratory investigation was that a corporate strategy perspective may complement the traditional financial paradigm in explaining capital structure in large U.S. corporations. Earlier fusion of strategic and financial literature led to a series of propositions antecedent to this work. Inclusion of Rumelt's diversification categories plus elsewhere validated financial contextual variables led to hypotheses for the present study. Results suggest a managerial choice perspective may help to explain the capital structure choice at the firm level of analysis.  相似文献   
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The issue of separating capital from operating expenditures has been largely ignored in discussions of the U.S. Federal Government's deficit. This paper attempts to overcome this void by conducting a simulation experiment designed to assess the macroeconomic consequences of separating capital from current expenditures under several alternative balanced budget rules and financing arrangements. The alternatives considered are directly related to management accounting issues and thus the purpose of this paper can be seen as compatible with the literature on the relationship between accounting techniques and economic analyses. The results of the study reaffirm the need for federal capital investment planning.  相似文献   
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A stochastic model is developed to estimate the expected social costs with and without a family planning program provided to a population. By examining the tradeoffs between the program costs and the costs of unwanted pregnancies, it is possible to estimate the costs and benefits of alternative family planning programs. Several extensions of the basic model are presented which permit the selection of optimal treatment variables for administration of a particular program as well as determining the long range effects of a particular family planning program.  相似文献   
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