通用全球营销主管任命之争

引子2009年7月,通用任命原负责产品开发的副总裁Bob Lutz兼做全球营销主管,负责广告和营销,此番任命在广告界掀起了巨大的波澜。     

Resolving the Presidential Puzzle

Many financial economists are puzzled by the fact that stock returns are higher under Democratic than Republican presidencies. In this paper, we test whether this return differential is explained by risk using a conditional version of the Fama and French (1993) model that allows risk to vary across political cycles. We find that the presidential puzzle can be explained when risk is properly taken into account. Much of the return differential can be attributed to the fact that Democratic presidencies are associated with higher market and default risk premiums than their Republican counterparts.     

On the short-maturity behaviour of the implied volatility skew for random strike options and applications to option pricing approximation

In this paper, we propose a general technique to develop first- and second-order closed-form approximation formulas for short-maturity options with random strikes. Our method is based on a change of numeraire and on Malliavin calculus techniques, which allow us to study the corresponding short-maturity implied volatility skew and to obtain simple closed-form approximation formulas depending on the derivative operator. The numerical analysis shows that these formulas are extremely accurate and improve some previous approaches for two-asset and three-asset spread options such as Kirk’s formula or the decomposition method presented in Alòs et al. [Energy Risk, 2011, 9, 52–57]. This methodology is not model-dependent, and it can be applied to the case of random interest rates and volatilities.     

Disclosure quality vis-à-vis disclosure quantity: Does audit committee matter in Omani financial institutions?

Review of Quantitative Finance and Accounting - We examine the impact of audit committee (AC) characteristics (e.g. AC foreign members, AC female members, AC members with multiple directorships, AC...     

What factors drive the adoption of digital banking? An empirical study from the perspective of Omani retail banking

This study aims to investigate the factors influencing the adoption of digital banking by retail banking customers. A theoretical model was developed based on an extended technology acceptance model to conceptualize the linkage among the factors impacting digital banking adoption. The primary data were acquired through a structured questionnaire from 200 customers. The multiple linear regression equation was used to analyse the relationship among six independent factors. The study revealed awareness, web features and perceived usefulness have significant positive influence on adoption of digital banking. The study is useful to plan and promote service model to enhance digital banking adoption.     

Economic Complexity and Inflation: An Empirical Analysis

Atlantic Economic Journal - This study examines the relationship between inflation and economic complexity, the set of productive capabilities and know-how embedded in the structure of an economy....     

Motives for foreign direct investment in Oman

This paper empirically examines the factors that influence foreign investors to engage in foreign direct investment (FDI) in Oman. One hundred and six foreign equity ventures participated in the study. The analysis of the data reveals that political and economic stability are the two most important motives for investing in Oman. Contrary to expectations, purchasing power of customers, market size, and availability of low‐cost inputs are the least desirable factors, respectively. The statistical analysis indicates that all motives do not equally appeal to all foreign investors from different countries. © 2003 Wiley Periodicals, Inc.     

Differences in campaign funds: A racial explanation

Black candidates for the U. S. House of Representatives receive substantially lower levels of campaign contributions than non-black candidates. This article investigates the reason for this discrepancy. Are blacks discriminated against or do they receive less money because they are riskier candidates? The results suggest that blacks do receive less money because of their race and that the source of the funds is important. Political action committees and political parties tend to discriminate but individual contributors do not.     

Cognitive sophistication and deliberation times

Experimental Economics - Differences in cognitive sophistication and effort are at the root of behavioral heterogeneity in economics. To explain this heterogeneity, behavioral models assume that...