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31.
Gianmarco I. P. Ottaviano Giovanni Peri 《Journal of the European Economic Association》2012,10(1):152-197
This paper calculates the effects of immigration on the wages of native US workers of various skill levels in two steps. In the first step we use labor demand functions to estimate the elasticity of substitution across different groups of workers. Second, we use the underlying production structure and the estimated elasticities to calculate the total wage effects of immigration in the long run. We emphasize that a production function framework is needed to combine own‐group effects with cross‐group effects in order to obtain the total wage effects for each native group. In order to obtain a parsimonious representation of elasticities that can be estimated with available data, we adopt alternative nested‐CES models and let the data select the preferred specification. New to this paper is the estimate of the substitutability between natives and immigrants of similar education and experience levels. In the data‐preferred model, there is a small but significant degree of imperfect substitutability between natives and immigrants which, when combined with the other estimated elasticities, implies that in the period from 1990 to 2006 immigration had a small effect on the wages of native workers with no high school degree (between 0.6% and +1.7%). It also had a small positive effect on average native wages (+0.6%) and a substantial negative effect (−6.7%) on wages of previous immigrants in the long run. 相似文献
32.
This paper proposes the ‘Mapping Tool for Make-To-Order companies’ (2MTO), a new approach to map, analyse and achieve lean benefits in high-variety-low-volume job shops. The focus is, mainly, on the transitional phase from push to pull, when there is a compelling need to acquire a deep understanding of the current state of the system under analysis. Sometimes, in this initial phase, a pure pull approach cannot be developed and a job shop configuration must be maintained. If so, 2MTO allows selecting a suitable hybrid Production Planning and Control system to control Work-In-Process and to limit lead times, so as to quickly achieve lean benefits, without significantly altering the original layout. 2MTO is fully explained making reference to an Italian precision mechanic company, where the application of the method led to a successful implementation of a Workload Control system. 相似文献
33.
34.
Rita Chiesa Gerardo Petruzziello Marco Giovanni Mariani Dina Guglielmi 《The Career development quarterly》2020,68(3):254-267
Although there has been growing attention to clients' expectations of career counseling, more research is necessary to clarify the role of these expectations in shaping client satisfaction at the end of the intervention. On the basis of expectation confirmation theory, this study examined the indirect effect of clients' initial expectations on overall satisfaction through the perceived performance and final confirmation of expectations. We also explored whether this indirect effect is dependent on counselors' initial expectations. Longitudinal data were collected on 83 counselor-client dyads involved in a career counseling intervention in northeast Italy. Results confirmed that clients' initial expectations predicted overall satisfaction with the intervention through the subsequent mediation of perceived performance and confirmation of clients' expectations. The moderating role of the counselors' initial expectations was not confirmed. These findings imply that career counselors should invest their efforts in managing clients' expectations. 相似文献
35.
Giovanni Dosi Mauro Napoletano Andrea Roventini Joseph E. Stiglitz Tania Treibich 《Economic inquiry》2020,58(3):1487-1516
We analyze the individual and macroeconomic impacts of heterogeneous expectations and action rules within an agent-based model populated by heterogeneous, interacting firms. Agents have to cope with a complex evolving economy characterized by deep uncertainty resulting from technical change, imperfect information, coordination hurdles, and structural breaks. In these circumstances, we find that neither individual nor macroeconomic dynamics improve when agents replace myopic expectations with less naïve learning rules. Our results suggest that fast and frugal robust heuristics may not be a second-best option but rather “rational” responses in complex and changing macroeconomic environments. (JEL C63, D8, E32, E6, O4) 相似文献
36.
Franck Galtier Giovanni Belletti Andrea Marescotti 《Development policy review : the journal of the Overseas Development Institute》2013,31(5):597-615
The commodity nature of green coffee is the main cause of the ‘coffee paradox’ (falling producer prices and rising consumer prices). Geographical Indications (GIs) may be an effective ‘decommodifier’ of the coffee market, but many constraints have to be overcome. Based on an analysis of how the characteristics of the coffee production system shape the positions of local stakeholders and, thus, the GI building process, this article identifies some constraining factors that can seriously undermine the capacity the GI has to decommodify the market and attain a fairer distribution of the benefits for local producers. 相似文献
37.
Claudio Giovanni Borroni Raffaella Piccarreta 《Statistical Methods and Applications》2001,10(1-3):113-121
Hierarchical partition models (see Malec and Sedransk, 1992, Consonni and Veronese, 1995) aim at finding an optimal grouping (partition) of a set of experiments regarding a target variable. In this class of models the partition is regarded as an unknown parameter, and one of the main goals is computing the posterior distribution over the class of the possible partitions. This problem has been addressed in Sampietro and Veronese (1998), where a Metropolis-Hastings algorithm is applied. In this paper the performance of an alternative procedure, based on the logic of genetic algorithms, is evaluated. The results of the two approaches are compared, even if a conjoint use of them is to be advised. 相似文献
38.
A fuzzy logic approach to poverty analysis based on the Gini and Bonferroni inequality indices 总被引:1,自引:0,他引:1
In the poverty analysis framework, a great deal of attention has been paid to the poverty measurement in terms of monetary variables, such as income or consumption. In this context, a relevant open problem is connected with the distinction between poor and non-poor. In fact, the concept of poverty is rather vague and cannot be defined in a clear way. In this respect, following a fuzzy logic approach, some new poverty measures are proposed. In particular, the fuzzy extension of two existing poverty measures based on the Gini and Bonferroni inequality indices is provided. Some synthetic and real applications are given in order to show how the proposed poverty measures work. 相似文献
39.
One of the main challenges in the field of performance measurement and management in public organisations is about how to use and manage performance measures effectively. This study aims to examine the stages involved in the process of utilisation of performance measures, i.e. adoption and implementation, and to investigate the political, cultural and rational factors that affect this process. For this purpose, a theoretical model from the literature has been extended and tested by using the data gathered through a survey involving the managers of several departments of Italian regions and municipal districts. The final sample has included 201 usable observations. The data analysis has been conducted using structural equation modelling. A significant cause-and-effect relationship was found between the stages of adoption and implementation. Moreover, it was found that adoption is driven significantly by rational factors. Otherwise actual implementation is influenced by factors addressed both by political considerations, such as external interest groups and by rational evaluations such as resources. The effects of other rational and cultural factors on implementation stage are mediated by adoption. 相似文献
40.
Journal of Management and Governance - 相似文献