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51.
Abstract

We consider the three-factor double mean reverting (DMR) option pricing model of Gatheral [Consistent Modelling of SPX and VIX Options, 2008], a model which can be successfully calibrated to both VIX options and SPX options simultaneously. One drawback of this model is that calibration may be slow because no closed form solution for European options exists. In this paper, we apply modified versions of the second-order Monte Carlo scheme of Ninomiya and Victoir [Appl. Math. Finance, 2008, 15, 107–121], and compare these to the Euler–Maruyama scheme with full truncation of Lord et al. [Quant. Finance, 2010, 10(2), 177–194], demonstrating on the one hand that fast calibration of the DMR model is practical, and on the other that suitably modified Ninomiya–Victoir schemes are applicable to the simulation of much more complicated time-homogeneous models than may have been thought previously.  相似文献   
52.
Multivariate Lagrange Multiplier Tests for Fractional Integration   总被引:1,自引:0,他引:1  
We introduce a multivariate Lagrange multiplier (LM) test forfractional integration. We derive and analyze the LM statisticand show that it is asymptotically noncentral chi-squared distributedunder local alternatives, and that, under Gaussianity, the LMtest is asymptotically efficient against local alternatives.It is shown that the regression variant in Breitung and Hassler(2002, Journal of Econometrics 110, 167–185) is not equivalentto the LM test in the multivariate case, although it is in theunivariate case. A generalization of the LM test that explicitlyallows for different integration orders for each variable isalso introduced. The finite sample properties of the LM testare evaluated by Monte Carlo experiments which demonstrate thatit is superior to the Breitung and Hassler (2002) test. An applicationto multivariate time series of real interest rates for six countriesis offered, demonstrating that more clear-cut evidence can bedrawn from multivariate tests compared to conducting severalunivariate tests.  相似文献   
53.
54.
In 1996, the British Government was accused of a protectionist 'buy British' campaign when it awarded a contract for army ambulances to Land Rover. We present a model where the procurement decision of the government affects the perception of consumers in the rest of the world about the quality of the domestic firm's product relative to that of a foreign rival's product. The model compares the outcome when the government's only concern is value for money with the outcome when the government takes account of the effect of its decision on export sales of the domestic firm.  相似文献   
55.
Increasing the Number of Women on Boards: The Role of Actors and Processes   总被引:1,自引:0,他引:1  
In this article, we offer an approach of how participative stakeholder innovation can be evaluated in complex multistakeholder settings that address wicked issues. Based on the principle of mutual value creation, we present an evaluation framework that accounts for the social interaction process during which stakeholders integrate their resources and capabilities to develop innovative products and services. To assess this evaluation framework, we collected multiple data from the case study of the Swiss Cardiovascular Network, which represents a multistakeholder setting related to the prevention of cardiovascular disease. Our findings indicate that the evaluation dimensions of the stakeholders’ mindsets, the process and context of the stakeholder interactions, as well as the outcomes are useful concepts to account for a cooperative process of innovation in a multistakeholder setting. We discuss both the theoretical and practical insights of our analysis for participative stakeholder innovation.  相似文献   
56.
To combat the financial crisis that intensified in the fall of 2008, the Federal Reserve injected a substantial amount of liquidity into the banking system. The resulting increase in reserve balances exerted downward price pressure in the federal funds market, and the effective federal funds rate began to deviate from the target rate set by the Federal Open Market Committee. In response, the Federal Reserve revised its operational framework for implementing monetary policy and began to pay interest on reserve balances in an attempt to provide a floor for the federal funds rate. Nevertheless, following the policy change, the effective federal funds rate remained below not only the target but also the rate paid on reserve balances. We develop a model to explain this phenomenon and use data from the federal funds market to evaluate it empirically. In turn, we show how successful the Federal Reserve may be in raising the federal funds rate even in an environment with substantial reserve balances.  相似文献   
57.
The main argument of this paper is that the theoretical definition of Giffen's paradox is ambiguous to the extent that it ignores the initial endowments of the consumer. A Slutsky equation incorporating positive initial endowments is used to discuss the Irish demand for potatoes in 1845-49, and some conditions to test whether or not the Irish potato was a Giffen good are deduced.  相似文献   
58.
In this paper a nonparametric variance ratio testing approach is proposed for determining the cointegration rank in fractionally integrated systems. The test statistic is easily calculated without prior knowledge of the integration order of the data, the strength of the cointegrating relations, or the cointegration vector(s). The latter property makes it easier to implement than regression-based approaches, especially when examining relationships between several variables with possibly multiple cointegrating vectors. Since the test is nonparametric, it does not require the specification of a particular model and is invariant to short-run dynamics. Nor does it require the choice of any smoothing parameters that change the test statistic without being reflected in the asymptotic distribution. Furthermore, a consistent estimator of the cointegration space can be obtained from the procedure. The asymptotic distribution theory for the proposed test is non-standard but easily tabulated or simulated. Monte Carlo simulations demonstrate excellent finite sample properties, even rivaling those of well-specified parametric tests. The proposed methodology is applied to the term structure of interest rates, where, contrary to both fractional- and integer-based parametric approaches, evidence in favor of the expectations hypothesis is found using the nonparametric approach.  相似文献   
59.
Imagining decolonized cities creates space to explore how urban places could strip away colonial dominance and restore the ability of Indigenous people to live, know and be. In this essay, we describe one attempt to create such space. While working in Porirua in Aotearoa New Zealand, we ran an urban design competition, hosted workshops with young people and held a symposium. Through all three phases we drew on utopian thinking to imagine beyond the current constraints of urban form in Aotearoa New Zealand to consider how cities might reflect the diverse realities of Māori. While this approach is an attempt at generating hopeful geographies, it also sat in tension with (post)colonial realities, such as racist attempts by white people to claim Indigeneity, and the ongoing need for land to be returned to Indigenous people. We argue that envisioning how cities might be decolonized is useful and needs to be rooted in the particular politics of place, but this imagining needs to be paired with action to confront persistent colonialism.  相似文献   
60.
In a deliberate attempt to shift the analytical focus away from critical examination of the underlying ideological assumptions of project management standards, this study focuses on the performativity of a specific project life cycle methodology. Through a case study, the article analyzes the effects and usages of the methodology in practice. This article proposes to think of project methodologies as fluid objects, creating shifting and adaptable relationships between methodology and practice.  相似文献   
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