Settlement procedures and stock market efficiency

This study examines why most derivatives markets that settle on the day following expiration choose the opening rather than the closing price as the final settlement price (FSP), whereas most markets that settle on the expiration day select an average rather than a single price as the FSP. Four exogenous changes in the Taiwan Futures Exchange settlement procedures provide an experimental basis for studying the settlement procedures’ impact on underlying assets. Greatest market efficiency is observed when the FSP is determined by a single rather than an average price and hypothesize that manipulation is prevented at the expense of market quality.     

The Knowledge Café–A Knowledge Management System and Its Application to Hospitality and Tourism

SUMMARY

Knowledge management is identified as a key success factor in most industries today. While data or information can be stored independently from people, knowledge is bound to people who use it for their interactions. The main goal of knowledge management is to improve the usage of knowledge in the enterprise. Knowledge management systems are not only organizational memory information systems. They also contain organizational standard procedures and a certain cultural attitude. A reference framework gives implementation hints mainly influenced by technical possibilities. The knowledge management system reference architecture contains layers of sources, repositories, taxonomy, services, applications and user interfaces. A software tool that largely corresponds to this reference framework is the Knowledge Café. Possible applications of this tool to the area of hospitality and tourism are described in this paper.     

Archaeological heritage tourism in China: the case of the Daming Palace from the tourists' perspective

Archaeological heritage tourism has been critical in historic cultural revival, archaeological knowledge dissemination, environment upgrading, and local community improvement. Little has been undertaken to evaluate the effectiveness and consequences of archaeological heritage projects in China from the tourist perspective. This study of the Daming Palace Heritage Site in Xi’an illustrates how archaeological and cultural resources have contributed to tourists' experiences. Through investigating an array of approaches that have been applied to advance tourists' understanding of archaeological and cultural resources, the paper proposes that more versatile methods and creative works are to be integrated to develop effective interpretative methods for both education and entertainment purposes. Local government needs to change its top-down approach to a more inclusive one, to establish strong networks among state and non-state stakeholders, and to promote their collective involvement in archaeological heritage tourism. Heritage site packaging strategies and partnerships among heritage resources citywide are advocated. More attention should be given to how to integrate various resources of local communities into heritage tourism. The current organization of government-run archaeological heritage in China calls for more opportunities for archaeologists to contribute actively with their expertise to enhance interpretive programmes and general tourist experience.     

我国钢材期货对现货价格波动的影响

我国钢材期货和现货价格波动存在正相关性,即使价格短期出现分歧,但从长期来看也会趋向于一致;钢材期货表现出了一定的价格发现功能;上一期现货价格的波动会引起当期期货价格和现货价格的同方向变动,且影响远大于同期期货价格波动和前一期期货价格和现货价格波动的影响;钢材期货的上市不仅不是钢材现货市场价格大幅波动的原因,而且在一定程度上对现货价格的大幅波动起到了抑制作用.钢材期货的推出,无论是对涉钢企业规避价格风险,还是对钢材市场平稳发展及稳定钢材价格,都具有一定的积极意义.     

Price discovery in tick time

This paper develops a tick time model for the quote setting dynamics on Nasdaq. The model decomposes quotes into an efficient price, asymmetric information and noise. Both the evolution of the efficient price and the information contents of quotes depend on quote durations. New measures for the contribution to price discovery are defined within this model. When aggregated to fixed calendar time intervals, they relate closely to Hasbrouck [Hasbrouck, Joel, 1995, One security, many markets: determining the contribution to price discovery, Journal of Finance 50, 1175–1199] information shares. Empirical results for 20 Nasdaq stocks indicate that ECNs, in particular Island, contribute most to price discovery for active stocks. For less active stocks, wholesale market makers contribute most.     

NFC协议的模糊测试优化方案

针对NFC协议进行模糊测试方案时产生大量不符合协议规范的无效测试用例而导致测试效率较低的问题,应用图论思想,提出了基于生成的策略与深度优先算法融合后的模糊测试方案。在基于生成的策略下构造测试用例的过程中,遍历由协议规范连接成的测试需求图,以深度优先算法搜索图中覆盖点较多的生成路径,精简测试用例的生成路径,保证生成的测试用例能够接近协议规范。实验分析表明,所提出的模糊测试方案能够有效地减少无效测试用例的生成,提高测试效率。     

Fractional cointegration and price discovery in Canadian commodities

Using as a unifying theme commodities important to the Canadian economy, recently developed tools are applied to studying price discovery in the spot and futures markets. For each commodity the fractionally cointegrated vector autoregression (FCVAR) model of Johansen and Neilsen is estimated and tested against the special case of the conventional cointegrated vector autoregression (CVAR). These models characterize the fundamental value of a commodity as the common stochastic trend shared by its cointegrated spot and futures prices, and so price discovery can be analyzed using the permanent-transitory decomposition of Gonzalo and Granger. Model forecasts are evaluated and compared using a distributional result due to Clark and West. The generalization to fractional cointegration is found to be statistically significant. However the economic significance of this generalization—in terms of forecast accuracy and the profitability of mean–variance dynamic trading strategies—is more fragile than may have been appreciated.     

Trading activity and price discovery in Bitcoin futures markets

This study examines the impact of trading activities on price discovery in the Bitcoin futures markets. We find that trades of hedgers are positively correlated with the modified information shares in both CME and CBOE futures markets, suggesting that their trading promotes futures market efficiency. Retailers’ trading activity relates negatively to the price discovery of the CME Bitcoin futures and thus destabilizes the market. Speculators exert positive (negative) impact on the price discovery in the CME (CBOE) Bitcoin futures. Our finding that CME’s Bitcoin futures exhibit superior price discovery than CBOE’s provides plausible justification for CBOE’s decision in March 2019 to suspend further listings of Bitcoin futures contracts.     

辽宁装备制造业竞争力评价及影响因素分析——基于产品附加值视角

结合辽宁装备制造业向高技术、高附加值靠拢的发展趋势,通过在内生增长理论模型上嵌入成本发现模型的定性分析,提出装备制造业产品附加值的影响因素;从附加值低这一短板因素出发,采用聚类分析的定量研究方法,将辽宁省与部分地区的竞争力水平进行测算并加以横向对比。结果表明,辽宁装备制造业竞争力影响因素除了人均资本积累、人均自然资源存量,还有内部知识的积累、外部知识的获得、国家的体制与政策环境。