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101.
Gilles Zumbach 《Quantitative Finance》2013,13(1):29-44
The long memory linear ARCH process is extended to a multivariate universe, where the natural cross-product structure of the covariance is generalized by adding two bi-linear terms with their respective parameter. The residuals of the linear ARCH process are computed using historical data and the (inverse square root of the) covariance matrix. Simple measures of quality assessing the independence and unit magnitude of the residual distributions are proposed. The salient statistical properties of the computed residuals are studied for three data sets of size 54, 55 and 330. Both new terms introduced in the covariance help to produce uncorrelated residuals, but the mean residual magnitudes are much larger than one. The large magnitudes of the residuals are due to the exponential decay of the covariance eigenvalues, corresponding to directions with very small fluctuations in the historical sample. Because the postulated properties of the innovations cannot be obtained regardless of the parameter values, subsequent inferences reach a fundamental limitation in a large multivariate universe. 相似文献
102.
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104.
Gilles Saint-Paul 《Journal of International Economics》2007,73(1):152-174
An increase in the range of tradable goods is analyzed in a two-country Dornbusch-Fischer-Samuelson style model, where labor cannot relocate to another sector upon a non-expected increase in the range of goods that can be traded.The effect of liberalization on the terms of trade tend to favor the poorer country (the “East”), if (as assumed) the most sophisticated goods are tradable before reform. Second, under ex-post liberalization, there exists a class of workers in the West who are harmed because they face competition from Eastern workers and cannot relocate to other activities. But if the East's economy is relatively small, their wage losses are not very large. Things are different, however, if there exist asymmetries in labor market institutions, such that upon reform, labor can relocate in the East but not in the West. Some workers in the West can then experience very large wage losses. Thus, rigid labor markets in the West magnify opposition to reform there. 相似文献
105.
106.
Marie-Ève Lapalme Michel Tremblay Gilles Simard 《International Journal of Human Resource Management》2013,24(5):1132-1145
This research examines the role played by an employee's supervisor and organization in the relationship between structural and content plateauing, affective commitment to the organization, and psychological distress. Our analyses, based on data taken from a sample of 575 hospital employees, reveal that there is a significant relationship between the two forms of plateauing and perceived supervisor support, whereas only hierarchical plateauing is related to perceived organizational support. Our results also highlight the mediating effect of perceived organizational support in the relationship between hierarchical plateauing, perceived supervisor support, and the consequences examined. 相似文献
107.
Jrme Bourdieu Lionel Kesztenbaum Gilles Postel‐Vinay Akiko Suwa‐Eisenmann 《Review of Income and Wealth》2019,65(1):21-47
This paper examines intergenerational wealth mobility between fathers and children in France between 1848 and 1960. Considering wealth mobility in the long run requires taking into account not only positional mobility (that is, how families move within a given distribution of wealth), but also structural mobility induced by changes in the distribution of wealth. Such changes are related to two structural phenomena: in the nineteenth century, the rising number of individuals leaving no estate at death and, after World War I, the decline in the number of the very rich who could live off their wealth. The paper studies the movements between these groups and estimates the intergenerational elasticity of wealth, taking into account the persistence at the bottom and at the top. 相似文献
108.
This study develops a mathematical modelling framework for simultaneously generating production plans for molds and the end items that are made with them. The inputs considered are the item demand (assumed constant over an infinite planning horizon), holding costs and shortage costs, together with the molds’ statistical lifetime distribution (in terms of number of uses) and costs pertaining to amortization, preventive replacements and corrective replacements. 相似文献
109.
The article describes an applied research project in which existing theory from the policy and organization theory literature was used to develop a rationale for estimating response times of competitors to easily imitated new products. A specific study of commercial banking product introductions is reported. 相似文献
110.
Thomas P Morris A Yannis G Lejeune P Wesemann P Vallet G Vanlaar W 《International journal of injury control and safety promotion》2005,12(4):251-253
The unavailability of consistent traffic accident data and road safety information limits the opportunities to provide target approaches to reduce road crashes. The European commission has decided to meet the demand for this data by establishing a new Road Safety Observatory. The structure and much of the initial content is being developed within the SafetyNet Integrated Project. This paper describes the structure of its key components. 相似文献