In order to carry out the relevant analyses, it was necessary to complete the tweets database. In order to eliminate the problem of randomness (for each organisation, there may be events that could cause unusually high activity for the organisation on Twitter for a short time) a sufficiently long period was used for the analysis. In the range from 15 July to 12 October 2017 (i.e. 90 days), each day of the week was randomly selected twice (i.e. two Mondays, two Tuesdays, etc.). If the selected testing days were immediately following one another
equilibrium. When cross-country differences are concerned, the countries with a greater propensity in both human and physical capital will be relatively richer given that this set of countries is experiencing the same rate of labour-augmenting technological process. Mankiw, Romer and Weil (1992) in addition tested the Solow model empirically as well. They found that a significant part of the income differences across countries can be explained by the differences in human and physical capital investment behavior. Then, the immediate implication is that attention should be
Janusz Kudła, Katarzyna Kopczewska, Agata Kocia, Robert Kruszewski and Konrad Walczyk
-term equilibrium, solving dynamic optimisation problem with continuous time. In other words, we are looking for optimal long-term tax policy of the government aiming to sustain fiscal solvency, contingent on the values of chosen parameters. We assume capital income to be partially or fully shifted abroad as a consequence of tax avoidance strategies of economic agents. We believe that this better reflects the limited mobility of physical capital and the treat of possible income shifting. For example, one can expect the latter to intensify during an insolvency crisis when fast
also changed, by which one means to multiply one type of wealth that does not take place at the expense of others. The richness of the nation consists of, inter alia, natural wealth and indirectly the richness of nature, anthropogenic material and financial wealth, physical and intellectual human wealth as well as social, cultural and institutional richness ( Poskrobko 2011 , 9). Therefore, taking into account external effects, especially in large projects interfering with the environment is of key importance for achieving long-term social and ecological goals.
Visions, Improving Life Busan. Korea - 27-30 October 2009 Retrived 01.03.2018 from http://www.oecd.org/site/progresskorea/44109779.pdf .
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rest of the world in 1999−2011. Together with the standard gravity variables, our model controls for the technology gap and the difference in factor endowments of the trade partners. Following Santos Silva and Tenreyro (2006) , we estimate the model by PPML for the EU-15 and V4 separately. The estimation results show that while for the EU-15, human capital accumulation is statistically significant and export flows increase with similarity in physical capital accumulation of the trade partner; for V4, instead of similarity, the difference in physical capital stock
Odunayo Magret Olarewaju, Stephen Oseko Migiro and Mabutho Sibanda
Asian Journal of Macroeconomics and Public Finance, 3 (2): 195-220.
David, T., Ginglinger, E. (2016) When cutting dividends is not bad news: The case of optional stock dividends. Journal of Corporate Finance, 40 , 174-191.
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Dhamala, M., Rangarajan, G., Ding, M. (2008) Estimating Granger causality from Fourier and wavelet transforms of time series data. Physical
Kokoszczyński Ryszard, Sakowski Paweł and Ślepaczuk Robert
, Dupire 1994 ) or using other distribution of the rate of return on the underlying asset rather than normal distributions ( Jarrow and Rudd 1982 , Corrado and Su 1996 , Rubinstein 1998 , Lim et al . 2005 ). On the other hand, the Black-Scholes model is still widely used not only as a benchmark in comparative studies testing various option pricing models, but also among the market participants. Christoffersen and Jacobs (2004) show that much of its appeal is related to the treatment of volatility – the only parameter of the Black-Scholes model, however, is not