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1.
Tina Hviid Rydberg 《Finance and Stochastics》1997,1(3):251-257
Simple sufficient conditions for the existence of a unique equivalent martingale measure are provided. Furthermore, these
conditions give us a handle on situations where an equivalent martingale measure cannot exist. The existence of a unique equivalent
martingale measure is of relevance to problems in mathematical finance. Two examples of models for which the question of existence
was unresolved are studied. By means of our results existence of a unique equivalent measure up to an explosion time is proved. 相似文献
2.
In this article, we examine two hypotheses concerning emigration. The first hypothesis is that emigration is positively correlated with wage differentials. The second hypothesis concerns a positive correlation between emigration and higher education in the sending country (the so-called brain gain hypothesis). We analyse unique time-series data for Suriname for the period 1972–2009, for which we fit error correction models to disentangle short-run from long-run effects. We document moderate support for the first hypothesis, but we find strong support for the brain drain (and not brain gain) hypothesis. We conclude with implications of our findings for Suriname. 相似文献
3.
Anette Hallin Tina Karrbom-Gustavsson Peter Dobers 《Business Strategy and the Environment》2021,30(4):1948-1957
Our purpose is to explore the concept of “sustainability” when understood from a performative perspective, i.e. as a concept that is filled with meaning across time. Drawing on a 10 year-long study of the digital footprint of Stockholm Royal Seaport, claimed to be northern Europe's largest sustainable urban development district, we show that “sustainability” emerged as the project became associated with particular places, projects, histories, and technologies. This means that “sustainability” was local in that it was situated in the particular spatial context of the project; temporal in that it was situated in a particular time; and political in that it expressed particular values and perspectives. The study contributes to explaining why “sustainability” remains—and always will remain—a contested concept, which is why sustainability transitions are complex. Consequently, we suggest that the transition towards sustainability always involves the transition of sustainability, something that needs to be acknowledged in order for a transition to actually become sustainable. 相似文献
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Rahmenpl?ne für die Altenpflege - Seit der Einführung des bundeseinheitlichen
Altenpflegegesetzes 2003 sind Pflegeeinrichtungen verpflichtet, die Ausbildung ihrer Auszubildenden
in der Altenpflege auf der Grundlage eines Ausbildungsplanes sicherzustellen.
Was sollte er beinhalten und wie wird er erstellt? 相似文献
6.
Elodie Gentina L. J. Shrum Tina M. Lowrey Scott J. Vitell Gregory M. Rose 《Journal of Business Ethics》2018,150(4):1173-1186
What causes adolescents to develop consumer’ ethical beliefs? Prior research has largely focused on the negative influence of peers and negative patterns of parent–child interactions to explain risky and unethical consumer behaviors. We take a different perspective by focusing on the positive support of parents and peers in adolescent social development. An integrative model is developed that links parental and peer support with adolescents’ self-worth motives, their materialistic tendencies, and their consumer ethical beliefs. In a study of 984 adolescents, we demonstrate support for a sequential mediation model in which peer and parental support is positively related to adolescents’ self-esteem and feelings of power, which are each associated with decreased materialism as a means of compensating for low self-worth. This reduced materialism is, in turn, associated with more ethical consumer beliefs. 相似文献
7.
The metropolitan region is commonly defined by a socio-spatial network of urban nodes that are linked in territory and function. Such a network is differentiated by size and dominance of the linked nodes, characterized by physical or virtual flows of a wide-ranging variety. The analytic network process (ANP) is a multi-criteria analytic method that measures the influence or dominance of the nodes in a network with feedback. We illustrate how ANP determines county rank as a measure of influence in a metropolitan statistical area (MSA) defined by its interrelated socio-economic and spatial elements qualitatively and quantitatively. We compare the ANP results to similar measures of regional influence in the literature. 相似文献
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The EU Savings Directive has been celebrated as a major political breakthrough in coordinating taxation in Europe. Against this background, the present paper evaluates the real‐world effects of this directive. The directive has left a loophole by providing grandfathering (exemption from withholding tax) for some securities. In this paper, we compare the pre‐tax returns of exempt bonds and comparable taxable bonds. If working around the Savings Directive is difficult for income tax evaders in Europe, then investors should be willing to pay a premium for bonds that are exempt from the withholding rate. Conversely, if such a premium is absent, then this suggests that the supply of existing loopholes (exempt bonds included) is large enough to allow tax evaders to continue evasion at no additional cost. The findings of our study are in line with this latter interpretation. 相似文献