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991.
We study the relationship of the VIX index and the exchange-traded note VXX on various timescales. We find that changes of VIX and VXX are correlated only contemporaneously on timescales of days, but VIX leads VXX on timescales of months. Next, we construct a simple joint model for VXX and VIX which replicates all the key characteristics of these two time series, but in which VIX and VXX are related only via a correlated error term. Therefore, VIX cannot be used as a predictor of VXX and there is no apparent trading profit opportunity.  相似文献   
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993.
Tras analizar el mercado de trabajo colombiano entre 2002 y 2011, los autores constatan una mejora sustancial de las oportunidades de empleo, junto con el aumento del empleo atípico. Exploran cómo ello afectó a la calidad del empleo mediante un indicador compuesto basado en el método de componentes principales categóricos, y concluyen que hubo una leve mejora generalizada, debida al aumento de los ingresos y de la seguridad social y al menor subempleo por horas, que benefició sobre todo a las trabajadoras independientes. Ello deja todavía un déficit cualitativo importante, que requiere políticas de estímulo de la institucionalidad y la productividad laborales y de la inversión.  相似文献   
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996.
Currently knowledge is considered an essential resource to contribute to the creation and generation of competitive advantage in organizations. The human factor as an intangible resource of a company has become a main value generator, and even though both knowledge management and intellectual capital are intangibles that can be measured in the financial reports of companies, their position as main value generators is not reflected in financial information. In Mexico, industrial sector companies need to promote the creation of intellectual added value based on its own abilities, which reside on their intellectual capital. The value added intellectual coefficient (VAIC?), with its components, is a tool that contributes to achieving this goal, and helps to identify the positive impact on key factors such as financial profitability, market capitalization and level of share value.  相似文献   
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998.
This paper aims to examine the credibility value of sustainability assurance and the type of assurance provider on cost of capital. A large sample of international companies from the period 2007–2014 was used to develop our models of analysis. We find a greater decrease in cost of capital for companies that publish and assure their social and environmental reports. Thus, voluntary sustainability disclosures decrease the cost of capital. However, companies also have the opportunity to reinforce this decrease by providing an assurance statement, so increasing the credibility of corporate social responsibility information. In addition, the decrease in the cost of capital is significantly higher when such assurance is provided by a top‐tier accountancy firm instead of by engineering or consultancy firms; this result supports also the reputational capital of accountancy firms.  相似文献   
999.
Recent pension reforms in Spain have been guided by two opposite goals: achieving financial stability and improving redistributive aspirations. In particular, reforms implemented in 1997/2001 entailed a mixture of both through: (i) changes in the pension formula; (ii) the extension of entitlement to early retirement to all cohorts; and (iii) increases in survival pensions. This paper builds an applied general equilibrium OLG model that captures the fundamental non‐stationarity of the Spanish reality (ageing population, education transition and increasing female attachment to the labour market) to assess the impact of those reforms. As a novel feature with respect to the literature, households in our model economy are made up of two potential earners who make saving and labour supply decisions. Our main conclusions from the analysis are at three different levels. First, the Spanish pension system is clearly unsustainable, with pension expenditure reaching a figure of about 18 per cent of GDP in 2050, and the reforms have clearly been  相似文献   
1000.
The future looked bright for Argentina in the early twentieth century. It had already achieved high levels of income per capita and was moving away from authoritarian government towards a more open democracy. Unfortunately, Argentina never finished the transition. The turning point occurred in the 1930s when to stay in power, the Conservatives in the Pampas resorted to electoral fraud, which neither the legislative, executive, or judicial branches checked. The decade of unchecked electoral fraud led to the support for Juan Peron and subsequently to political and economic instability.  相似文献   
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