A lattice model for option pricing under GARCH-jump processes

This study extends the GARCH pricing tree in Ritchken and Trevor (J Financ 54:366–402, 1999) by incorporating an additional jump process to develop a lattice model to value options. The GARCH-jump model can capture the behavior of asset prices more appropriately given its consistency with abundant empirical findings that discontinuities in the sample path of financial asset prices still being found even allowing for autoregressive conditional heteroskedasticity. With our lattice model, it shows that both the GARCH and jump effects in the GARCH-jump model are negative for near-the-money options, while positive for in-the-money and out-of-the-money options. In addition, even when the GARCH model is considered, the jump process impedes the early exercise and thus reduces the percentage of the early exercise premium of American options, particularly for shorter-term horizons. Moreover, the interaction between the GARCH and jump processes can raise the percentage proportions of the early exercise premiums for shorter-term horizons, whereas this effect weakens when the time to maturity increases.     

An empirical study of commercialization performance on nanoproducts

Along with the trend toward the convergence between nanotechnology and other disciplines, the commercial application and the diffusion of Nan products have drawn much attention. The successful commercialization of nanoproducts is based not only on R&D breakthroughs but also on the products' attributes and the consumers' needs. However, no research has yet been carried out to investigate the effect of performance and importance on nanoproducts. The aim of this study is to discuss and evaluate the commercialization performance of nanoproducts from consumer perspectives. The importance?performance analysis (IPA) approach was used to construct a series of nanoproducts' importance attribute and performance evaluation maps to identify areas for improvement. The empirical data were compiled in a structural consumer questionnaire-based survey from consumer perspectives across different nanoproducts. Respondents were required to identify nanoproducts' innovative characteristics and the performance differences of their attributes. Both innovation characteristics and product attribute dimensions as representing nanoproduct innovations were further weighted in terms of their perceived importance and their performance. As a consequence, the proposed approach in this study is to understand how to integrate consumers' perceived importance into performance, with particular concern on the identification of market opportunities into the commercialization of nanoproducts. In addition, this study enables nanotechnology firms to develop nanoproduct technologies and to strategically market them based on their attributes and performance, thus leading to the achievement of their commercialization and the creation of a successful long-term, performance-based competitive strategy.     

The effects of corporate governance on airline performance: Production and marketing efficiency perspectives

This study explores the relationship between operating performance and corporate governance in 30 airline companies operating in the US. First, this study applies a two-stage Data Envelopment Analysis (DEA) to evaluate the production efficiency and marketing efficiency of the airlines. Our findings indicate that, in general, there is not as much dispersion in the relative productive efficiencies of the airlines as there is in their marketing efficiencies. The low-cost airlines, on average, are more efficient carriers than the full-service ones, but less efficient marketers. Secondly, truncated regression is used to explore whether the characteristics of corporate governance affect airline performance. The results demonstrate that corporate governance influences firm performance significantly. Finally, we address the managerial decision-making matrix and make suggestions to help airline managers improve performance.     

Unemployment with trade and firm heterogeneity

By specifying the setting of the footloose capital model with firm heterogeneity, this paper examines the effects of trade liberalization on unemployment through two different mechanisms: firstly, we embed search frictions into the labor market; and secondly, we consider fair wages as the source of unemployment. In the model with search frictions, we find that both the expected wage and employment rate could be higher for a small country with better search technology. In the fair wage setting, the results show that an increase in trade freeness increases the unemployment rate of the large (small) country when the trade freeness is sufficiently high (low). Finally, we try to compare the welfare levels under different scenarios and discover that unemployment may lead to a deterioration in the welfare gains from trade.     

Effective teaching,student engagement and student satisfaction during the Covid-19 pandemic: Evidence from business students' qualitative survey evaluations

We investigate the influence of unanticipated prolonged disruption on effective teaching, student engagement and student satisfaction during campus lockdown due to COVID-19. Qualitative comments provided by undergraduate business students in the university end-of-semester survey were analysed using a variety of methods, including sentiment analysis. Our findings indicate that effective teaching through the characteristics of the instructor, can lead to enhanced student engagement and higher levels of student satisfaction in an emergency remote teaching environment. Our findings highlight the critical role of the instructor in providing cognitive and affective support to students, along with clear communication, during times of substantial change.     

碳中和背景下城市碳汇功能及提升 策略——以沈阳核心区为例

城市是碳排放产生的主要地域空间，是进行“碳中 和”核算与政策制定的主体。除了减少固定能源与交通碳排放 外，增加城市碳汇也是实现“碳中和”的重要手段。通过分析 沈阳三环区域城市碳汇(植被、土壤、水系、建筑物)不同组 成部分的碳汇能力，估算出城市碳汇固碳量为430.93万t， 能够抵消沈阳市年能源消耗产生CO2的7.34%。在明晰城市 碳汇固碳机理、固碳潜力及其空间分布特征的基础上，提出增 加固碳面积与提升碳密度两方面的城市碳汇功能提升策略，旨 在为中国低碳规划与碳中和实现提供理论指导与技术支撑。