Annals of Finance - This paper develops a model for optimal portfolio allocation for an investor with quantile preferences, i.e., who maximizes the $$\tau $$ -quantile of the portfolio return, for... 相似文献
Portuguese Economic Journal - In this paper we provide the first estimate of the intertemporal substitution for leisure in Spain, accounting for the impact of human capital accumulation. This would... 相似文献
Quality & Quantity - Broadband projects nowadays represent a valid investment alternative to pursuing smart city goals, particularly considering the rapid development that has affected the... 相似文献
International Entrepreneurship and Management Journal - Entrepreneurial education (EE) has proliferated in recent years, however, while previous research has extensively analyzed the impact of EE... 相似文献
Bid delegation to specialized intermediaries is common in internet ad auctions. When the same intermediary bids for competing advertisers, its incentive to coordinate client bids might alter the functioning of the auctions. This study develops a methodology to detect bid coordination and presents a strategy to estimate a bound on the search engine revenue losses imposed by bid coordination. When the method is applied to data from auctions held on a major search engine, coordination is detected in 55% of the cases of delegated bidding and the search engine's revenue loss ranges between 5.3% and 10.4%. 相似文献
This paper studies the impact of sectoral productivity growth on welfare in Sub-Saharan Africa. Using the analytical framework of a DSGE model, the main finding is that, for the estimated values of structural parameters, the allocation of scarce resources to the tradable agricultural sector for boosting productivity leads to a greater increase in overall welfare than would be the case if they were allocated to the non-traded goods sector.
International Entrepreneurship and Management Journal - Although the field of strategic entrepreneurship has received much attention in recent years, the relationship of strategic entrepreneurship... 相似文献
In a market where a stochastic interest rate component characterizes asset dynamics, we propose a flexible lattice framework to evaluate and manage options on equities paying discrete dividends and variable annuities presenting some provisions, like a guaranteed minimum withdrawal benefit. The framework is flexible in that it allows to combine financial and demographic risk, to embed in the contract early exercise features, and to choose the dynamics for interest rates and traded assets. A computational problem arises when each dividend (when valuing an option) or withdrawal (when valuing a variable annuity) is paid, because the lattice lacks its recombining structure. The proposed model overcomes this problem associating with each node of the lattice a set of representative values of the underlying asset (when valuing an option) or of the personal subaccount (when valuing a variable annuity) chosen among all the possible ones realized at that node. Extensive numerical experiments confirm the model accuracy and efficiency.
A key element of the platform business model is concentrating great organisational power over the work process while simultaneously allowing workers certain degrees of autonomy and encouraging them to see themselves as self-employed. This study applied the neo-normative control concept to analyse the mechanisms platforms use to promote freedom of choice and self-regulation values, which are formed extra-organisationally in deeply neoliberal societies such as Chile. The Uber ride-hailing and Pedidos Ya home delivery platforms in Chile were examined using a labour process theory framework based on an ethnographic design. The results show the specific ways in which these platforms deploy forms of neo-normative control, how this deployment is anchored in the labour context of neoliberal Chilean society, and how workers re-signify, stress, or seek to subvert this control strategy. The findings' theoretical and empirical implications are discussed. 相似文献