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91.
The construction of an importance density for partially non‐Gaussian state space models is crucial when simulation methods are used for likelihood evaluation, signal extraction, and forecasting. The method of efficient importance sampling is successful in this respect, but we show that it can be implemented in a computationally more efficient manner using standard Kalman filter and smoothing methods. Efficient importance sampling is generally applicable for a wide range of models, but it is typically a custom‐built procedure. For the class of partially non‐Gaussian state space models, we present a general method for efficient importance sampling. Our novel method makes the efficient importance sampling methodology more accessible because it does not require the computation of a (possibly) complicated density kernel that needs to be tracked for each time period. The new method is illustrated for a stochastic volatility model with a Student's t distribution. 相似文献
92.
Research summary: Although the middle management literature has identified various bridging roles performed by middle managers in the market environment, it is relatively vague about whether and how they manage the political environment to achieve market‐related goals. In an inductive field study of four large state‐owned enterprises based in mainland Communist China, operational middle managers were found to take an active role in dealing with political actors to achieve market efficiency in their local environments, performing two distinct bridging strategies. Our field study suggests that middle managers are better equipped than their bosses (top executives) as well as their subordinates (frontline employees) to perform the bridging function between competing market and political imperatives in various local settings. Managerial summary: For firms that operate in diverse geographies, it is challenging for a handful of top executives to deal with numerous political actors. This burden could be shared with operational middle managers, who play a bridging role by drawing on their operational knowledge and local networks. Our research on middle managers who work under the scrutiny of political actors in China found that they bridge market and political ideology by conveying common features that seem legitimate to both. They also bridge market goals and political actors with personal affect. Compared to top executives and frontline employees, middle managers have unique advantages in performing these bridging functions. Firms can enhance their strategy execution ability by training middle managers in dealing with political actors in diverse contexts. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
93.
This article adopts a nonparametric quantile causality approach to examine the causal effects of the U.S. and Japan stock markets on the stock markets of the Pacific-Rim region. This approach allows us to detect not only nonlinear causalities in conditional return (mean) and conditional volatility (variance) but also the asymmetries of causalities under extreme market conditions (bullish vs. bearish states). Our results provide significant evidence of causality in return and volatility at different points of the conditional distributions of returns, with the greater effects from the U.S. than from Japan. Asymmetric quantile causality patterns are particularly pronounced in the case of Japan. 相似文献
94.
Phung Thai Minh Trang Nguyen Minh Tuan Nguyen Huu Tho 《Journal Of Asia-Pacific Business》2017,18(3):180-191
The study used quarterly panel data of 6 years from 2010 to 2015 of all companies listed on both Vietnamese stock markets including the Ho Chi Minh City Stock Exchange and Ha Noi Stock Exchange, and on three leading industries consisting of insurance-banking, foodstuff, and real estate to explore the relationship among four key financial ratios and stock trading volume. Two models, fixed effects model (FEM) and random effects model (REM), with robust standard errors, were applied for this study. The key findings showed that earnings before tax on sales, debt on owner’s equity, and owner’s equity on total assets significantly influenced trading volume. 相似文献
95.
Convergence refers to the process of narrowing the differences between International Accounting Standards/International Financial Reporting Standards (IAS/IFRS) and country‐specific accounting standards. The purpose of this study is to measure the formal convergence between Vietnamese Accounting Standards (VAS) and IAS/IFRS using a fuzzy‐based approach. We assess the extent of convergence between VAS and IAS/IFRS from the perspective of a single standard, clusters of standards and the standards as a whole. The levels of standards convergence are clustered into four categories: full convergence, substantial convergence, substantial difference and complete difference. Our results indicate that the level of convergence between the two sets of standards only achieves mid‐level convergence. The findings of this study should help policy makers improve VAS to meet international standards. 相似文献
96.
Cuong Viet Nguyen Tung Duc Phung Van Khanh Ta Dat Tho Tran 《International Review of Applied Economics》2017,31(6):734-753
We measure the impact of road and irrigation projects on the livelihoods of households in the poorest and most remote areas of Vietnam using difference-in-difference estimators. We find that both rural road and irrigation projects help local households improve the access to safe water and welfare measured by a wealth index. The impact of irrigation projects is found to be larger than the impact of road projects. We also find heterogeneous impacts of road and irrigation projects. Households with higher levels of education tend to benefit more from road projects, while households with lower levels of education are likely to benefit more from irrigation projects. 相似文献
97.
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99.
Thu Thi Trinh 《旅游与文化变迁杂志》2013,11(4):239-263
Museums have several functions as custodians of heritage and culture, disseminators of knowledge about heritage and as places that attract tourists as well as local residents. Arguably all these functions require visitors to be satisfied with the visit experience if museums are to achieve their objectives. This paper reports findings from 411 visitors to the Cham Museum, Danang, Vietnam. It describes the nature of the museum and argues that satisfaction involves the conative, which may be measured by the willingness of visitors to make recommendations to others. However, the study identifies that interpretation and displays are important determinants and simply adjuncts to the generation of satisfaction. 相似文献
100.
This article examines the impact of small and medium-sized enterprises' (SMEs) proactive environmental strategy on market performance through the mediating mechanism of environmental reputation. In addition, we investigate the potential moderating role of competitive strategies on the environmental reputation-market performance nexus. Data were collected from 223 SMEs. Using the hierarchical multiple regression analysis, the results show that a proactive environmental strategy positively enhances environmental reputation. Also, the influence of proactively environmental strategy on market performance is mediated by environmental reputation. In addition, our findings show the relationship between environmental reputation and market performance is greater for firms that adopt the differentiation strategy but not significant for firms adopting the low-cost and integrated strategies. Our study offers several theoretical and practical implications. 相似文献