On the variance of the ratio estimator for midzuno-sen sampling scheme

Summary For the sampling scheme ofMidzuno [3] andSen [4], which provides unbiased ratio estimators an expression for the variance of the estimator does not seem to be available in literature. An expression for the same is derived in this note.     

在近岸采油装置上实施集成风险检查系统

介绍中东国家把集成风险检查和检查系统用于近岸油田装置。根据详细的风险检查分析和过去的检查记录,对所选择的设备采用无损检测技术实施检查。资产数据、检查记录和有关文件都集中保存在计算机系统中。这样有能力保管和查看不同种类的文件和图样。这个系统能生成和监管维修和检查工作单,并能与企业其他系统进行交流。有一个知识数据库用于资产整合活动,与MS Excel的输入/输出功能进行数据交换也更加方便。     

Building relationship innovation in global collaborative partnerships: big data analytics and traditional organizational powers

This study examines how relationship innovation can be developed in global collaborative partnerships (alliances, joint ventures, mergers, and acquisitions). The recently emerging theory of big data analytics linked with traditional organizational powers has attracted a growing interest, but surprisingly little research has been devoted to this important and complex topic. Therefore, after developing the theoretical foundations, our study empirically quantifies the links between the theoretical constructs based on the data collected from chief executive officers, managing directors, and heads of departments who work in contemporary global data‐and‐information driven collaborative partnerships. The results from structural equation modeling indicate that the relationship innovation depends on the power of big data analytics and non‐mediated powers (NMP, expert and referent). The power of big data analytics also mediates the correlation between NMP and relationship innovation. However, mediated powers (coercive and manipulative) negatively affect the power of big data analytics and relationship innovation. The interaction effects further depict that analytically powered partnerships have better relationship innovation compared with those which focus less on the analytical power. Consequently, the contributions of this study provide a deeper understanding of mechanisms of how modern collaborative partnerships can use big data analytics and traditional organizational powers to co‐create relationship innovation.     

Measuring the spatial price differences in China with regional price parity methods

The measurement of prices has been an important field in economics, and a spatial price index is very useful in comparing the standards of living and well-being across regions in a country. This paper intends to measure the regional price parities (RPPs) across different provincial areas in China with an urban sample of 140 goods and services in 2015 according to the framework of the International Comparison Program (ICP) methodology. The results show that the RPPs that were estimated with commonly used approaches, such as the Gini–Éltetö–Köves–Szulc (GEKS), Geary–Khamis (GK) and weighted country product dummy (WCPD), are only slightly different. The RPPs of three regions including Guangdong, Shanghai and Zhejiang are greater than 1 (with Beijing = 1), while the other 27 regions are all lower than 1, which represents price levels that are less than Beijing. In the extrapolation of the RPPs from 2000 to 2014, a significant descending trend is found for the standard deviation series of the RPPs over time that shows that the price differences across regions decreased during the extrapolating period. This finding provides evidence of a phenomenon of spatial price converging in China. Finally, a study on the deflation of provincial aggregates with the RPPs reveals that the spatial price adjustment will change the ranks or relative importance of different regions in the country. Especially, the measurement of income inequality proves that the Gini coefficients of provincial income deflated by the RPP^GEKS are all lower than the Gini coefficients of unadjusted incomes.     

专利技术特征划分的反思与重构

技术特征划分的不确定性在一定程度上加剧了专利确权诉讼和侵权纠纷的频发以及结果的频繁“反转”。从表面上看，技术特征的划分难以通过形式理性加以规范；在理论层面上，技术特征划分涉及事实与价值二分的理论问题。要解决技术特征划分的问题，应在事实与价值之间建立沟通机制，而实践理性正是沟通事实与价值的理论，建立在实践理性的基础之上，将技术特征划分中的事实部分与价值部分利用主客观尺度加以区分。在符合技术特征划分定义的规范下，存在多种技术特征的划分方式，决定最终划分方式的是其背后的实践理由。在具体情境之下，对基于实践理由的制度利益进行衡量，重构司法推理三段论，从而在技术特征划分中建立起技术事实到价值判断的理性化和正当化路径。     

Shall One Sit “Longer” for a Free Lunch? Impact of Trading Durations on the Realized Variances and Volatility Spillovers

This study examines the effect of trading durations on the realized variance of rupee futures traded in national stock exchange (NSE), India and Dubai Gold & Commodities Exchange (DGCX), Dubai as there exists a difference in the trading durations at these exchanges, where DGCX has longer trading duration. The empirical results suggest that longer trading duration has significantly higher realized variance, and also non-trading durations at NSE account for higher overall realized variance of Rupee Futures. We model the impact of trading durations on intraday and overnight realized variance for rupee futures and estimate a reduced realized volatility of 40–70 bps due to shorter trading duration. We find that non-trading durations at National Stock Exchange account for 60–70% of the overall realized variance of rupee futures. Using MGARCH model with BEKK parameterization, we find evidence of bidirectional volatility spillover from Offshore to Onshore Rupee markets.

     

Gender diversity and firm performance: evidence from India and Singapore

ABSTRACT

This study investigates if gender diversity on boards is an effective driver of financial performance. For this purpose, this study choses two countries, one of which has the soft law approach (Singapore) while the other has mandatory requirements (India) on corporate boards gender diversity. By doing so, it examines if there is a comparability between the listed firms of the two countries. Our results suggest that the gender diversity has a positive and significant effect on the financial performance of the firms of both the countries. Although, the gender diversity of the two countries does not seem to affect the growth opportunities of both the countries. Further, our results indicate that the board characteristics affect the performance positively and significantly when the sample is divided into five quantiles for the firms in these two countries. These findings have implications to the managerial decision making and relevance to stewardship theory and resource dependency theory.     

Observational equivalence of the overlapping generations and the discounted dynamic programming frameworks for one-sector growth

Two alternative frameworks for one-sector growth are considered: an overlapping generations model with two-period lived, strictly selfish agents and a discounted dynamic programming model with infinitely lived agents. It is shown that under certain assumptions the two models are observationally equivalent, i.e., generate identical timepaths for all aggregate variables. One of the key assumptions is that the steady-state real interest rate in the overlapping generations model be strictly greater than the growth rate. The result is proved for the deterministic case and extension to a stochastic case is indicated.