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91.
文中采用理论分析与模型构建相结合的方式,研究货运车辆的燃油消耗与运输效率之间的关系,基于调研数据,采用回归分析的方法构建模型,得到了不同车型车辆的百吨公里燃油消耗量与实载率的倒数关系模型,为企业提高车辆运输效率,降低燃油消耗提供数据参考。 相似文献
92.
土工试验数据处理通常是通过繁琐计算与作图来完成,且要求及时、准确。线性回归处理法通过一定的数理关系有效简化数据处理的计算与作图过程。通过大量的剪切、液塑限试验数据处理表明,其结果是准确的、值得信赖的,它通过线性回归简化繁琐计算,使作图也变得简单。本文主要针对土工试验中的线性回归应用进行分析,从大量的剪切、液塑限联合试验中论证其结果的准确性。 相似文献
93.
为确定某露天磷矿露天开采爆破振动的传播规律及对周围村庄民居的安全影响,对该矿不同采场的爆破作业振动进行了测试。对监测数据进行回归分析,找出了该矿爆破振动的传播规律及特征,判断爆破引起的振动不会对周围村庄民居产生不良影响,并就如何降低爆破振动影响提出了一些建议,为矿山今后的爆破作业提供了指导依据。 相似文献
94.
Gender wage gap studies: consistency and decomposition 总被引:1,自引:0,他引:1
Astrid Kunze 《Empirical Economics》2008,35(1):63-76
This paper reviews the empirical literature on the gender wage gap, with particular attention given to the identification
of the key parameters in human capital wage regression models. This is of great importance in the literature for two main
reasons. First, the main explanatory variables in the wage model, i.e., measures of work experience and time-out-of-work,
are endogenous. As a result, applying traditional estimators may lead to inconsistent parameter estimates. Second, empirical
evidence on the gender wage gap hinges on estimates of the parameters of interest. Accordingly, their economic meaning may
be limited by restrictive assumptions included in wage models. This challenges both researchers and policymakers who require
precise measures of the gender wage gap in order to create and enforce efficient equality policies.
This paper is a substantially revised version of the first chapter of my thesis. I am grateful to Christian Dustmann and Wendy
Carlin for their great support and comments. I also thank Bernd Fitzenberger, colleagues at the Norwegian School of Economics
and Business Administration and IZA, and three anonymous referees for their helpful comments and suggestions. 相似文献
95.
Nuria Osés-Eraso Frederic Udina Montserrat Viladrich-Grau 《Environmental and Resource Economics》2008,40(4):529-550
We study appropriation strategies in common pool resources where extinction is a credible threat. Here we present an experimental
study of the appropriation of common pool resources in a dynamic setting where resource availability depends on the initial
environmental characteristics of the common resource and on human-induced resource depletion due to users’ appropriation patterns.
Our results show that initial resource scarcity limits appropriation by inducing an initial caution among users that persists
throughout of the game. Additionally, we find that subjects restrain their appropriation strategies when scarcity increases.
However, this concern for resource scarcity is not enough to prevent resource depletion. Agents do not counteract the previous
rounds’ appropriation strategies but follow the appropriation trend. High appropriation levels are followed by higher appropriation
strategies, thus promoting the well known tragedy of the commons. Often concern for resource preservation is not great enough
to limit appropriation.
相似文献
96.
本文主要根据2001-2011年江苏省用电量样本数据,建立了江苏省电力负荷与人均GDP、工业化以及人口数之间的多元回归预测方程,并预测了江苏省2014-2020年总用电量数据,在此基础上提出了相应的建议。 相似文献
97.
Redistribution and growth: Pareto improvements 总被引:1,自引:1,他引:1
This paper analyzes the relationship between income distribution and economic growth. It introduces heterogeneous households who have preferences for leisure into Grossman and Helpman's model of endogenous growth (in which income distribution has no effect on economic growth). Wealth distribution affects the endogenous rate of growth as the labor supply of each individual responds inversely to his permanent income. When the labor Engel curve is concave (convex), unequal wealth distribution decreases (increases) the rate of growth. Pareto-improving-growth-enhancing wealth redistributions are characterized. 相似文献
98.
In this paper we present estimates of the responses of individuals to marginal tax rates in their reporting of income, using
data from individual tax returns for the year 1995. One estimation method is ordinary least squares regression. A second method
uses quantile regression, which provides evidence on behavioral responses at different points (or quantiles) in the distribution
of income and so is relevant to the question of whether the responses of, say, the rich differ from those at other points
in the income distribution. Our results clearly indicate that marginal tax rates affect the reporting decisions of individuals.
However, there are significant differences in the marginal tax rate reporting responses for the various types of reported
income, there are major differences across income classes, and there are notable differences in the estimated responses across
estimation methods.
相似文献
James AlmEmail: |
99.
We investigate the determinants of wages in Zambia and based on the quantile regression approach, we analyze how their effects
differ at different points in the wage distribution and over time. We use three cross-sections of Zambian household data from
the early nineties, which was a period of economic transition, because items as privatization and deregulation were on the
political agenda. The focus is placed on the public-private sector wage gap, and the results show that this gap was relatively
favorable for the low-skilled and less favorable for the high-skilled. This picture was further strengthened during the period
1991–1996. 相似文献
100.
文章基于我国1997-2009年省级面板数据,采用数据本身隐含信息进行内分组的面板平滑转移模型来检验财政支出与经济增长之间的非线性效应,并进一步拓展了Armey曲线推论。研究发现,我国省级政府财政一般预算支出规模和财政支出结构均与经济增长之间存在Armey曲线所描绘的非线性效应,其中财政一般预算支出最优规模为9.32%,财政支出最优结构为1.643,并且财政一般预算支出规模与财政支出结构都在最优值两侧对经济增长的影响具有不对称性,相比而言,财政一般预算支出规模的转换速度似乎更快。这意味着现阶段我国财政一般预算支出规模与财政支出结构不合理,需要政府提高财政支出效率。 相似文献