精益六西格玛的突破——层级设计使两种互斥方法取长补短

精益与六西格玛的关系是重大六西格玛会议中广受欢迎的话题,也是许多书籍和文章的主题.两者间的关系看上去似乎简单,但是实际应用起来却相当富有挑战性,因为将两者结合起来的方法实在是数不胜数.     

Anticipating the future: ‘Biotechnology for the poor’ as unrealized promise?

This article analyses visions of the future articulated by proponents of ‘biotechnology for the poor’, those who claim that an embrace of transgenic technology in agriculture is critical to alleviating poverty in developing countries. Specifically, we analyse how such ‘biotechnology for the poor’ proponents represent a future with or without transgenic crops. Such representations include visions of a beckoning (promising) future, where much is to be gained from an embrace of transgenic technology in agriculture, and an onrushing (threatening) future, where much will be lost if the technology is not embraced. The article shows that claims about a beckoning or onrushing future by ‘biotechnology for the poor’ proponents are based upon unexamined or problematic assumptions about the poor and poverty. As such, poverty becomes merely a moral backdrop against which visions of a future are articulated. Furthermore, ‘biotechnology for the poor’ writings do not engage in dialogue with alternative voices in articulating their perspectives on the future, losing a key opportunity to democratize debate about this crucial issue. We conclude by considering the policy consequences (in regulatory and institutional terms) of ‘biotechnology for the poor’ depictions of the future, particularly for the global South where such consequences will be felt.     

The value relevance of disclosure: Evidence from the emerging capital market of Egypt

This study examines the value of voluntary and mandatory disclosure in a market that applies International Accounting Standards (IAS) with limited penalties for non compliance. The lack of enforcement creates an element of choice in the level of mandatory disclosure by companies. Using panel-data analysis, our empirical results show that, after controlling for factors such as asset size and profitability, mandatory disclosure has a highly significant but negative relationship with firm value. This result, although puzzling from a traditional perspective, is consistent with the predictions of analytical accounting models, which emphasize the complex interplay of factors determining disclosure effects. Our results also show that voluntary disclosure has a positive but insignificant association with firm value. This lack of statistical significance supports the view that there is a complex interplay of different factors determining the relationship between disclosure and firm value.     

Earnings quality: Some evidence on the role of auditor tenure and auditors’ industry expertise

Prior studies suggest that auditors with short tenure are associated with lower earnings quality because of the lack of client-specific knowledge and/or low balling. In this study, we examine whether industry specialization of auditors and low balling affect the association between auditor tenure and earnings quality. We find that the association between shorter auditor tenure and lower earnings quality is weaker for firms audited by industry specialists compared to non-specialists. In addition, we do not find results consistent with the low balling explanation.     

Random walk and efficiency tests in the Asia-Pacific foreign exchange markets: Evidence from the post-Asian currency crisis data

This paper empirically tests the random walk and efficiency hypothesis for 12 Asia-Pacific foreign exchange markets. The hypothesis is tested using individual as well as panel unit root tests and two variance-ratio tests. The study covers the high (daily) and medium (weekly) frequency post-Asian crisis spot exchange rate data from January 1998 to July 2007. The inferential outcomes do not differ substantially between the unit root tests and the variance-ratio tests when using daily data but differ significantly when using weekly data. With the daily data, both types of unit root tests identify unit root components for all the series and two variance-ratio tests provide the evidence of martingale behavior for majority of the exchange rates tested. With the weekly data, panel unit root tests identify unit root component for the exchange rates and, the unit root tests on a single series basis identify unit root component for 10 foreign exchange markets. However, the variance-ratio tests reject the martingale null for the majority of the exchange rates when using weekly data.     

Agenda formation and accounting standards setting: lessons from the standards setters

There are many studies on lobbying of accounting standards, but the technical agenda of regulators is taken as ‘given’ and why a particular topic was admitted to the agenda is not investigated. Agenda formation is important as control of the agenda determines which topics get regulated and the form of the regulatory response. A few studies have explored agenda formation across regulatory institutions but are largely silent on the role of individual decision makers and technical staff. However, the standards setters have sought to explain their agenda processes. This paper reviews statements by the members of accounting standards setting agencies about their experiences of agenda formation. It identifies insights gained from standard setters and makes some suggestions for future research.