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51.
52.
In last several years, Vietnams economy has reached significant achievements. Those are clearly seen by analyzing economic growth, economic structure transformation, trade and investment and Vietnams economy competitiveness. However, in the process of development, Vietnams economy is still facing many difficulties and challenges. Vietnam is accelerating speed of innovation process, is active and quicker in international economic integration in order to complete the economic – social objectives in the period of 2001–2005 with annual average economic growth rate of 7.5%. 相似文献
53.
考察了语言多样性对分析师盈余预测质量的影响,以及这种影响如何因员工教育水平的不同而变化.基于中国上市公司的实证检验结果显示,语言多样性显著降低了分析师盈余预测质量,但是随着公司员工受教育水平提高,语言多样性对分析师盈余预测质量的负面影响有所减弱.进一步研究发现,分析师与CEO间的校友关系增强了员工教育水平对语言多样性与分析师盈余预测准确性之间关系的正向调节作用.研究结论一定程度上丰富了分析师私有信息获取及其影响机理以及社会关系等方面的文献,而且还可帮助投资者、监管者等利益相关方更好地理解分析师行为,促进资源合理配置,增强资本市场的有效性等方面具有一定的启示意义. 相似文献
54.
基于需求不确定和纵向约束的链与链竞争环境,识别固定加价合同选择的绩效改进条件和博弈均衡特征,并进一步分析市场需求波动风险、市场规模、市场份额、价格竞争、零售商预测能力及固定加价比例对合同选择行为的影响。研究发现:当横向价格竞争相对较弱,零售终端的市场份额相对较大时,基于纵向约束的固定加价合同是实现供应链系统绩效改进的贝叶斯占优均衡;若此时固定加价的比例相对适中且市场需求波动风险不是很高,或者固定加价的比例较大但市场需求波动的风险相对适中,则固定加价合同是实现制造商和零售商Pareto绩效均改进的贝叶斯均衡;而若价格竞争非常激烈,则无纵向约束的批发价格合同能形成实现供应链系统绩效Pareto改进的占优贝叶斯均衡。 相似文献
55.
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This paper examines recent changes in weekly income levels and dispersion for Māori, New Zealand’s indigenous ethnic group.
Changes in the Māori income distribution between 1997 and 2003 reflect rapid increases in economic growth and employment rate.
A reduced proportion of people had zero or benefit-level incomes and a higher proportion had high incomes. Income inequality
declined for working-aged Māori and was stable for employed Māori. The average income gap between Māori and Europeans declined.
The increased Māori employment rate during this period was the single most important driver of changes in the Māori income
distribution.
相似文献
David C. Maré (Corresponding author)Email: |
57.
The authors show how saddlepoint techniques lead to highly accurate approximations for Bayesian predictive densities and cumulative distribution functions in stochastic model settings where the prior is tractable, but not necessarily the likelihood or the predictand distribution. They consider more specifically models involving predictions associated with waiting times for semi‐Markov processes whose distributions are indexed by an unknown parameter θ. Bayesian prediction for such processes when they are not stationary is also addressed and the inverse‐Gaussian based saddlepoint approximation of Wood, Booth & Butler (1993) is shown to accurately deal with the nonstationarity whereas the normal‐based Lugannani & Rice (1980) approximation cannot, Their methods are illustrated by predicting various waiting times associated with M/M/q and M/G/1 queues. They also discuss modifications to the matrix renewal theory needed for computing the moment generating functions that are used in the saddlepoint methods. 相似文献
58.
唐代为科举制度初行期,作为新生事物有其活力,其某些情况与做法(如进士科行卷等)属空前绝后;而唐代任官须经考核始实授,其中包括书法。唐代又是书法艺术发展的高峰期,代表了特有的时代风尚与士人健康的文化心理。书法与科举、任官密切相关,而科举、任官制度则有力推动了书法艺术的发展。 相似文献
59.
60.
Cohort Succession in the US Housing Market: New Houses, the Baby Boom, and Income Stratification 总被引:1,自引:0,他引:1
Rachel E. Dwyer 《Population research and policy review》2008,27(2):161-181
Federal housing policy in the US across the postwar period supported the construction of new houses more than public provision
or renovation of older structures as a means of ensuring a sufficient supply of quality dwellings. Understanding trends in
new housing in particular is thus crucial to understanding the housing regime. Following Myers (Housing demography: Linking demographic structure and housing markets. University of Wisconsin Press, 1990; Housing Studies, 14, 473–490,1999), this paper conceptualizes historical change in the housing stock within a demographic framework as the movement
of cohorts of households through cohorts of housing stock. Recent evidence suggests that a new cohort of houses arose in the
1980s and 1990s (larger with more amenities than past vintages), and that buyers of those new houses were increasingly affluent.
In this paper, I link the succession to a new cohort of houses to household cohort succession and examine the increasing affluence
of new house buyers by age and cohort, focusing especially on the entry of the Baby Boom generation exactly when the new cohort
of houses arrived. I use US Census microdata for 1960–2000 to develop a cohort longitudinal dataset, and analyze historical
change in stratification in new house ownership. I find significant shifts between cohorts in income inequality among new
house buyers, with implications for the capacity of the housing regime to meet the future needs of an increasingly diverse
population.
相似文献
Rachel E. DwyerEmail: |