In this paper, we study the market of the CBOE S&P 500 three-month variance futures that were listed on May 18, 2004. By using a simple mean-reverting stochastic volatility model for the S&P 500 index, we present a linear relation between the price of fixed time-to-maturity variance futures and the V IX. The model prediction is supported by empirical tests. We find that a model with a fixed mea...

Based on the classical regression model, timevarying coefficient model, unit root, co-integration, Granger causality test, VAR, impulse response and variance decomposition, the dynamic relationship between prices of natural rubber futures in China and Japan has been researched systematically. The following conclusions are gotten through empirical researches: Firstly, there is a stable co-integr...

This paper focuses on the dynamic of recent upheaval in tourism and hospitality sector due to COVID-19 epidemic Greece Santorini island. It uses case study a country one-fourth whose GDP consists tourism. We compare available statistical data showing change variables previous years with 2020 look into new challenges opportunities posed by drop numbers visitors flights. focus mainly economic soc...

This paper proposes a perfect foresight model of a two-region two-sector economy, where localized externalities in the acquisition of skills cause specialization and uneven regional development. The introduction of a new technology either reinforces or reverses this development pattern. Wealth differences are reinforced if, in spite of higher wages, the new technology locates in the advanced re...

The recent pandemic has painfully reminded us of the need for IS design to be informed by possible futures and conscious undesirable – Within months, many nice-to-have functionalities have become must-haves; Technology solutions in response raised privacy equality concerns. Although science research fundamentally focuses on shaping artefacts events create a more desirable future, there been lim...