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91.
An age‐structured model of population dynamics with age‐dominance is proposed and analyzed. Existence and uniqueness of solutions are established as well as the uniqueness and local asymptotic stability of steady‐states. Conditions for convergence to or oscillation about the steady‐state are specified in some cases. 相似文献
92.
Fabio Luis Barbosa dos Santos 《Globalizations》2019,16(2):216-231
ABSTRACTThis article critically assesses Brazil’s role in the South American regional integration process. My hypothesis is that despite the rhetoric of Brazil’s Workers’ Party (PT) governments about a ‘new developmentalism’ project to support ‘post-neoliberal’ regional integration, the structural continuities imposed by neoliberal macroeconomic policies have constrained all possibilities of overcoming underdevelopment. In the realm of regional integration, the driving force has been the internationalization of oligopolic Brazilian business in a process that promised Brazil a leadership role in the subcontinent. This frame has fostered business based on the overexploitation of labour and the destruction of the environment, enforcing trends that deepen the structures of economic dependency and social conflict. The political outcome of that process is that the PT has contributed to contain social pressures, both in the domestic and in regional contexts, as Brazil has played a moderating role in South America’s so-called progressive wave. 相似文献
93.
Fabio Monteduro 《Journal of Management and Governance》2014,18(1):29-49
In the last century local public services have often been reformed. The declared outcome of the most recent reforms is the privatization and liberalization of the sector. However, in almost all European countries, the privatization of local public services has been only partial, because local governments have sought to privatise a minority stake in the public owned-companies, while remaining committed to retaining public ownership and control over the longer-term as a means of protecting public interest. The phenomenon of mixed public–private companies emerged as a result of this process. In this context, the article investigates whether differences in financial performance can be found between public–private companies and totally public-owned enterprises. Empirical quantitative studies on this particular topic are quite lacking at the moment. The present study tries to fill this gap through an empirical analysis on a sample of 623 Italian local utilities. The results of the study suggest that there are differences in economic performance between local utility companies with varying degrees of public ownership. In particular, public–private utilities show better economic performance than publicly owned firms, especially in terms of profitability. The results also seem to suggest that the majority private ownership is not necessary for better performance. In other terms, public–private partnership—and not private majority ownership—seems to be the key point for good performance. 相似文献
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97.
This paper deals with the convergence in Mallows metric for classical multivariate kernel distribution function estimators. We prove the convergence in Mallows metric of a locally orientated kernel smooth estimator belonging to the class of sample smoothing estimators. The consistency follows for the smoothed bootstrap for regular functions of the marginal means. Two simple simulation studies show how the smoothed versions of the bootstrap give better results than the classical technique. 相似文献
98.
Art dealers are often described as gatekeepers who are focused on their own position as well as the status of their artists and collectors. We argue that this is an incomplete account of art dealing. The goal of this article is to explain how art dealing is a “toolkit” that does not exclusively focus on status building and social capital, but also includes behavior associated with accessing the visual arts field and community development. First, art dealers often have a background that has strong social ties to art, which provides them with intimate knowledge of the art world and social connections with artists, collectors, and other art world actors. For that reason, entry into art dealing reflects intimate knowledge of art practices, what we call “proximate connoisseurship.” Second, art dealerships reflect both competitive and communal factors. Art dealers may choose to work with artists based on their ability to generate income, social capital, and prestige (“competitive logic”), but art dealers may also employ a “communal logic” focused on friendships and creating community. This theory of art dealers is illustrated with excerpts from interviews with 34 dealers randomly selected from the rosters of international art fairs such as Art Basel Miami, EXPO Chicago, Aqua, and the New Art Dealers Alliance show. 相似文献
99.
Fabio D’Orlando 《Journal of Socio》2010,39(2):295-305
Swinging is a sexual behaviour of increasing relevance but substantially ignored in theoretical economic investigation. This paper has two major goals. The first is to describe what swinging is, discuss its economic relevance and single out the main characteristics of swinger behaviour. To this end, the Italian situation has been considered as a type of case study. The second goal is to use standard and less-standard tools from economic theory to propose some preliminary assessments of the causes and consequences of swinger couples’ behaviour. In this respect, some contributions on two-sided markets, hedonic adaptation approaches and equilibrium matching models have proved particularly useful. 相似文献
100.
Self-categorization theorists (Oakes, Haslam & Turner, 1994) have shown that stereotypes are not rigid and fixed, and that they vary to reflect variations in the comparative context within which they are formed. In this paper we investigate stereotype variability in a sample of 6/7-year-old children. Participants describe a specific outgroup, and then describe the ingroup (that is 'boys' or 'girls', depending on the sex of the participant). There are two conditions: in condition one the outgroup is represented by adult 'men', if participants are boys, or by adult 'women', if participants are girls. In condition two the outgroup is represented by 'girls', if participants are boys, or by 'boys', if participants are girls. Results show that stereotypical traits attributed to the ingroup change significantly with changes in the frame of reference. 相似文献