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The purpose of this paper is to investigate both the impact of different reward types and the adoption of knowledge-sharing practice on a crowdsourcing-based open innovation contest. Despite the benefit of knowledge sharing, contestants could struggle to find a balance between knowledge sharing and knowledge protection in open innovation.

The authors' approach follows a stylised contest model in a game-theoretical setting in which contestants first decide on their efforts and then the contest sponsor chooses the winner. Moreover, the outcome of an open innovation contest is delineated as either intermediate goods that require further refinement and risk-taking versus a market-ready end product for the contest sponsor. The authors also investigate how knowledge sharing among contestants would be influenced by reward types such as fixed-monetary prizes vs performance-contingent awards.

The contest sponsor will lower the prize level after adopting knowledge sharing. Therefore, the total effort will decline regardless of the reward type. Moreover, the choice of reward types depends on the contest sponsor's characteristics because the performance-contingent award is suitable for a large market size but the fixed-monetary prize can more efficiently raise the quantity of contestant inputs.

Prior studies have tested the connection between contest performance and knowledge sharing in crowdsourcing-based contests; however, there is not an integrated framework to best design the operation of a contest when considering different reward types and knowledge-sharing practices.

This chapter tests the market risk and economic policy uncertainty (EPU) of five Asian stock market returns and finds positive and significant intertemporal relations between excess stock returns and conditional volatility/downside risk. The results support positive risk-return relations across five Asian markets after controlling for the lagged dividend yield and the change in EPU ( Δ EPU). The evidence strongly indicates that excess stock returns are negatively correlated with the Δ EPUs. This finding holds true not only for the domestic market but also for external sources. The negative effect of Δ EPU is more profound from the US and global markets as compared with those from the Europe, Japanese, and domestic markets and suggests that a pathway to forming an optimal strategy for portfolio risk management depends on developing an effective hedging strategy against the impact of Δ EPUs from US/global markets.

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.

Using a GED-GARCH model to estimate monthly data from January 1990 to February 2022, we test whether gold acts as a hedge or safe haven asset in 10 countries. With a downturn of the stock market, gold can be viewed as a hedge and safe haven asset in the G7 countries. In the case of inflation, gold acts as a hedge and safe haven asset in the United States, United Kingdom, Canada, China, and Indonesia. For currency depreciation, oil price shock, economic policy uncertainty, and US volatility spillover, evidence finds that gold acts as a hedge and safe haven for all countries.

China around 1900 was an enormous domain with approximately 400 million people, almost all of them desperately poor. Most were farmers, working intensively on small tracts of land using relatively primitive technology. It was in many respects a Malthusian economy, with high death and birth rates and many residents living close to the subsistence level.

The purpose of this study is to provide new cross-country evidence on the relation between real estate investment trust (REIT) returns and idiosyncratic risk for samples of listed and unlisted REITs in the US and Australia.

Five alternative models with exponential GARCH enhancements were employed, in a Fama-MacBeth (1973) setup. The authors assess the statistical significance of the idiosyncratic risk variable and interpret the outcomes.

The results show that listed REITs in the US and Australia demonstrate a positive idiosyncratic risk-return linkage over the long period of January 1980-November 2013 and April 1994-December 2012, respectively. A further examination by sub-period reveals that this positive relation is only evident in the new REIT era (January 1993-September 2001), absent in the vintage era (before December 1992) and maturity era (November 2001-August 2008). The unlisted REITs in both countries show no relation with idiosyncratic risk. Further, the global financial crisis has no effect on the relation between idiosyncratic risk and REIT returns.

A key motivation of this paper stems from the mixed findings documented in the literature. Also very little research has been done on the idiosyncratic risk-REIT returns linkage in the Australian context. This study offers unique insights from comparisons: Australia vs the US; and listed vs unlisted REITs.

This study finds evidence that a stock return is inversely correlated with downside risk, confirming a pattern of risk-aversion behavior. Evidence from testing a stock return's response to a change in economic policy uncertainty indicates a significantly negative effect in the Chinese stock market; this conclusion holds true for testing the impacts of changes in fiscal and monetary policy uncertainties. However, the data produce a mixed effect for the change in fiscal policy uncertainty. The evidence produced from examining the geopolitical effect on the stock market strongly supports the presence of an adverse effect on stock market performance.

Despite decades of social science research into disasters, practice in the field continues to be informed largely from a technical perspective. The outcome is often a perpetuation of vulnerability, as narrowly defined technical interventions fail to address or recognize the ethical, historical, political and structural complexities of real-world community vulnerability and its causes. The authors propose that addressing this does not require a rejection of technical practice, but its evolution into a critical technical practice – one which foregrounds interdisciplinarity, inclusion, creativity and reflexivity, as means to question the assumptions, ideologies and delimited solutions built into the technical tools for understanding risks.

The authors present findings from three events they designed and facilitated, aimed at rethinking the engineering pedagogy and technical practice of disaster risk management. The first was a 2-day “artathon” that brought together engineers, artists and scientists to collaborate on new works of art based on disaster and climate data. The second was the Understanding Risk Field Lab, a 1-month long arts and technology un-conference exploring critical design practices, collaborative technology production, hacking and art to address complex issues of urban flooding. The third was a 4-month long virtual workshop on responsible engineering, science and technology for disaster risk management.

Each of these events uncovered and highlighted the benefits of interdisciplinary collaboration and reflexivity in disaster risk modeling, communication and management. The authors conclude with a discussion of the key design elements that help promote the principles of a critical technical practice.

The authors propose “critical technical practice” which foregrounds principles of interdisciplinarity, inclusion, creativity and reflexivity, as a means to question the assumptions, ideologies and delimited solutions built into the technical tools for understanding climate and disaster risk.

Among developing countries, the Republic of China in Taiwan (hereinafter Taiwan) has been experiencing economic growth accompanied by improving income distribution. Between 1964 and 1980, the average annual growth rate of the real gross national product was 9.92 per cent (Council for Economic Planning and Development (CEPD), 1982, p. 23). In the same period, the income ratio between the top 20 per cent and the bottom 20 per cent of families dropped from 5.33 to 4.17 and the Gini coefficient decreased from 0.36 to 0.30 (CEPD, 1982, p. 54; Directorate‐General of Budget Accounting and Statistics, 1980, (DGBAS), p. 44). To put it somewhat dif‐ferently, in 1964 the lowest fifth of households received 7.71 per cent of total personal income, and the highest fifth 41.07 per cent. But in 1980, the income share of the lowest fifth increased to 8.82 per cent while that of the highest fifth decreased to 36.80 per cent. The condition of greater equality in income distribution appears more obvious in the capital city of Taipei. In 1981, for instance, its Gini coefficient was estimated to be only 0.28 (Taipei Bureau of Budget, Accounting and Statistics, 1981, (TBBAS), P. 24).