The Global Competitiveness Report of the World Economic Forum examines the relative
competitiveness of economies on a broad basis of microeconomic and macroeconomic
indicators. The following discussion uses the results of the Global Competitiveness Report
2004–2005 and investigates how the relative competitiveness of Germany and other
European countries has developed over the recent past. 相似文献
The purpose of this study is to examine how scholarly research on luxury brand marketing has evolved in the twenty-first century. This literature review focuses on 242 articles related to luxury marketing. The contributions of these articles are thoroughly analyzed, combining qualitative interpretations with bibliometric citation analysis that uses a social network of referrals. This study identifies the most influential universities, research outlets, and scholars in the recent evolution of luxury marketing research. The study also identifies current and future research streams, geographic scope, and underlying research methodologies, and it reveals the most frequently used theories and prominent constructs in luxury marketing research. There are few studies that have examined the literature review of the luxury marketing discipline. No previous research has investigated luxury branding by means of a bibliometric analysis and qualitative assessment within such a large scope. Building on the results of this analysis, researchers can target their studies precisely and, thus, increase the contributions of their empirical research.
In this paper, we take up an approach of (Lindberg, in Bernoulli, 15(2):464–474, 2009) who introduced a new parameterization
of the Black–Scholes model that allows for an easy solution of the continuous-time Markowitz mean-variance problem. We generalize
the results of (Lindberg, in Bernoulli, 15(2):464–474, 2009) to a jump-diffusion market setting and slightly correct the proof
and the assertion of the main result. Further, we demonstrate the implications of the Lindberg parameterization for the stock
price drift vector in different market settings, analyse the dependence of the optimal portfolio from jump and diffusion risk
and finally indicate how to use the method. We particularly also show how the optimal strategy can be obtained with the restricted
use of historical data. 相似文献
This article explores project management offices (PMOs) through community of practice theory. Preliminary results from a national health care case study are used to confirm the legitimacy of this approach. Today's knowledge‐based economy calls for mechanisms to share knowledge. The issue of making more with less is at stake in order to reuse good practices, support innovative practice, and prevent the reinvention of the wheel. Members of these communities are at the heart of the learning process. The originality of this research is that it sheds light on PMOs in a new theoretical perspective within the field of knowledge management. 相似文献
This study uses GARCH-EVT-copula and ARMA-GARCH-EVT-copula models to perform out-of-sample forecasts and simulate one-day-ahead returns for ten stock indexes. We construct optimal portfolios based on the global minimum variance (GMV), minimum conditional value-at-risk (Min-CVaR) and certainty equivalence tangency (CET) criteria, and model the dependence structure between stock market returns by employing elliptical (Student- and Gaussian) and Archimedean (Clayton, Frank and Gumbel) copulas. We analyze the performances of 288 risk modeling portfolio strategies using out-of-sample back-testing. Our main finding is that the CET portfolio, based on ARMA-GARCH-EVT-copula forecasts, outperforms the benchmark portfolio based on historical returns. The regression analyses show that GARCH-EVT forecasting models, which use Gaussian or Student- copulas, are best at reducing the portfolio risk. 相似文献
Forecasting labour market flows is important for budgeting and decision‐making in government departments and public administration. Macroeconomic forecasts are normally obtained from time series data. In this article, we follow another approach that uses individual‐level statistical analysis to predict the number of exits out of unemployment insurance claims. We present a comparative study of econometric, actuarial and statistical methodologies that base on different data structures. The results with records of the German unemployment insurance suggest that prediction based on individual‐level statistical duration analysis constitutes an interesting alternative to aggregate data‐based forecasting. In particular, forecasts of up to six months ahead are surprisingly precise and are found to be more precise than considered time series forecasts. 相似文献
In a 2008 article in the EU’s Competition Policy Newsletter, Peter Lowe, Director General of the EU Commission’s Directorate Competition, synthesised the experience of his office with regard to the design of competition policy institutions for the 21st century. A year earlier, he had co-authored another article, appearing in the same venue, recapitulating the Commission’s lessons learned from the Energy Sector Inquiry and the need for effective unbundling of energy transmission networks. The reader of both, at first astounded by the apparent gap between policymaking reality and reflections upon it, soon detects a rather pragmatic approach to shaping regulatory agendas. But are there limits to expediency? 相似文献