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51.
The present note sheds light on several pitfalls associated with unit root tests that are overlooked by a growing volume of literature in financial economics. Specifically, several studies have confused unit root tests with the Random Walk hypothesis. Unit root tests are not designed for such a task since they aim at investigating whether a time series is difference-stationary or trend-stationary and are not, therefore, predictability tests. Secondly, we emphasize some serious shortcomings associated with the widely used unit root test developed by Zivot and Andrews [Zivot, E. & Andrews, D.W.K. (1992). Further evidence on the great crash, the oil-price shock, and the unit-root hypothesis. Journal of Business and Economic Statistics, 10, 251–270.]. In particular, we stress that results from the Zivot–Andrews test are sensitive to the methods employed to calculate the critical values and to select the maxim lag k. Furthermore, Zivot–Andrews test imposes a one time structural break in a time series; however recent studies showed that not counting for other true structural breaks may bias the results and may cause a spurious rejection of the unit root null hypothesis. Finally, we support our arguments by an empirical example based on the findings of Narayan and Smyth [Narayan, K.P. & Smyth, R. (2004). Is South Korea’s stock market efficient? Applied Economics Letters, 11, 707–710.] with regards to the efficiency of South Korean stock market. We show that contrary to what the authors claim, the KSE (KOSPI) price index is predictable, and hence the South Korean stock market is not informationally efficient. 相似文献
52.
The interesting finding in this article is that the Australian coal exporter's loss, which occurs due to a strong Australian dollar, is less than the profit from increasingly higher prices of Australian steam coal. For this reason, Australian steam coal exporters choose to export more when the price is high. The empirical results of this analysis confirm that for each one cent increase in Australian dollar value against the U.S. dollar, the Australian steam coal price increases by 0.8182 U.S. dollars and for each additional one million tons export of Australian steam coal, the Australian steam coal price increases by 1.752 U.S. dollars. 相似文献
53.
Recent conceptualization of built-in versus bolted-on corporate social responsibility (CSR) initiatives has offered a much-needed distinguishing framework to sophisticate our understanding of why different CSR initiatives yield varying corporate social performance (CSP) and associated recognition from stakeholders. One of the major roadblocks in conducting research on these two types of CSR initiatives is the absence of a valid and reliable measure. We address this void by developing a measure for bolted-on versus built-in CSR that relies on coding publicly available content. Our measure of these two types of CSR initiatives tests favorably for both convergent and discriminant validity and inter-rater reliability. Advancement of such a measurement instrument will positively contribute to CSR research, enabling scholars to better theorize the linkage between CSR and reputation, and other aspects of firm performance. 相似文献
54.
55.
It is argued that the evidence from Asia indicates that despite the rise in average incomes the incidence of rural poverty has shown little tendency to diminish and in many cases the standard of living of some groups and classes, notably the landless, actually has declined. It then is suggested that the reasons for this have less to do with aggregate or sectoral rates of growth than with the interaction between the structure of the economy and four dynamic processes. Finally, the limitations of conventional theories and models are indicated and an alternative framework of analysis is proposed. 相似文献
56.
In industrialized countries, the human needs and purposes to be served by science and technology are increasingly subject to greater social control. People in developing countries are also preoccupied with controlling choices in the development and application of technology - and the priceless ingredient in controlling their own destiny.The encounter between the more and less dynamic societies makes developing countries the targets of an ‘information bombardment’. Science, technology, values and organization - the ‘active ingredients’ in development - are all forms of information (a resource that is not merely renewable but expandable). The capacity of indigenous people to understand and manipulate the information flow - linking science (‘know what’) and technology (‘know-how’) to human values (‘know why’) and social authority and organization (‘know who’) - is consequently the key to the dynamics of ‘development’. 相似文献
57.
The company law landscape in Malaysia has witnessed a significant change in its insolvency law with the adoption of two new corporate rescue mechanisms, the corporate voluntary arrangement and judicial management under the Companies Act 2016 (CA 2016), which has repealed the Companies Act 1965 (CA 1965). Previously, the insolvency laws under the CA 1965 were based on the traditional pro‐creditor laws of winding up and receivership, which embodied the liquidation culture. This article examines the transition of the insolvency laws in Malaysia from a liquidation culture under the CA 1965 to a corporate rescue culture under the CA 2016. It also reviews the necessary changes to the pro‐creditor laws, which are preserved under the CA 2016 in order to accommodate the pro‐debtor laws with the introduction of the corporate rescue mechanisms, which came into force on March 1, 2018. Through comparative and critical analysis of similar laws in the United Kingdom and Singapore, this article argues that while the corporate rescue mechanisms are regarded as pro‐debtor however the review reveals that the position of secured creditors are impeding its application and reforms ought to be considered. 相似文献
58.
The paper jointly evaluates the determinants of switching to modern rice and its productivity while allowing for production inefficiency at the level of individual producers. Model diagnostics reveal that serious selection bias exists, justifying the use of a sample selection framework in stochastic frontier models. Results revealed that modern variety selection decisions are influenced positively by the availability of irrigation and gross return from rice and negatively by a rise in the relative wage of labour. Adoption of modern rice is higher in underdeveloped regions. Seasonality and geography/location does matter in adoption decisions. Stochastic production frontier results reveal that land, labour and irrigation are the significant determinants of modern rice productivity. Decreasing returns to scale prevail in modern rice production. The mean level of technical efficiency (MTE) is estimated at 0.82. Results also demonstrate that the conventional stochastic frontier model significantly overestimates inefficiency by three points (MTE = 0.79). Policy implications include measures to increase access to irrigation, tenurial reform and keeping rice prices high to boost farm returns and offset the impact of a rise in the labour wage which will synergistically increase the adoption of modern rice as well as farm productivity. 相似文献
59.
This study examines the role that the bicultural identity of members of an ethnic diaspora (the Indian diaspora in Canada and the United States) can play in affecting the level of economic engagement between their country of residence (COR) and country of origin (COO). Specifically, it examines how differences in bicultural identity can explain the varying levels of engagement by diasporic members in different trade and investment facilitation behaviors, and how the different components of bicultural identity, cultural distance, and cultural conflict, could affect the level of economic engagement between the diasporic members’ COR and COO. Results indicate that cultural distance and cultural conflict and their interaction do have a significant impact on economic engagement behaviors; these effects are complex and multifaceted and are mediated by the diaspora’s social networks in both the COR and COO. 相似文献
60.
We test for reliable evidence of the day-of-the-week effect on both the mean and volatility for the S&P/TSX Canadian return index. Unlike previous studies, we permit several specifications for the error distribution — GARCH normal, Student's t, generalized error distribution, and double exponential distribution. Unlike other studies, we find that the day-of-the-week effect in both mean and conditional volatility is sensitive to the particular specification of the underlying distributions. We also find that using a regression analysis assuming a Student's t distribution is a better way to investigate this effect. Our evidence demonstrates the apparent fragility of previous empirical studies on calendar anomalies. Thus, our results serve as a warning that with financial data, the error distributional assumptions are critical to correctly identifying empirical regularities in the data. 相似文献