the presence of bubbles in the markets and its formation has been regarded by economists and they have been looking to develop methods that can be recognized by using appropriate method for the formation of bubbles. in this paper, first, the formation of bubbles is tested using the new unit root test known as phillips test (generalized sup adf test) for 50 companies in the tehran stock exchange...

Inspired by the recent literature on aggregation theory, we aim at relating the long range correlation of the stocks return volatility to the heterogeneity of the investors’ expectations about the level of the future volatility. Based on a semi-parametric model of investors’ anticipations, we make the connection between the distributional properties of the heterogeneity parameters and the auto-...

Boiling heat transfer is a key thermal limit in nuclear systems. However, for decades, its modeling has relied on speculative hypotheses and a good dose of empiricism. As researchers now start to develop more mechanistic models, the need for high-quality high-resolution data on the bubble nucleation and growth cycle is increasing. Specifically, nucleation site density, bubble departure diameter...

This empirical study is an attempt to detect speculative bubbles in different indexes of the Pakistan stock market (KSE-100, KSE-30 & KMI-30) using monthly time series data from (2005– 2020) evaluate all four Rtadf (Recursive, Right tail Augmented Dickey-Fuller) tests. includes Standard ADF, Rolling-window Supreme ADF (SADF) and Generalized SADF (GSADF) with Monte-Carlo simulation, under Ga...

The Nasdaq Composite fell another ≈ 10% on Friday the 14’th of April 2000 signaling the end of a remarkable speculative high-tech bubble starting in spring 1997. The closing of the Nasdaq Composite at 3321 corresponds to a total loss of over 35% since its all-time high of 5133 on the 10’th of March 2000. Similarities to the speculative bubble preceding the infamous crash of October 1929 are qui...