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(Luypaert and Van Caneghem 2014). Theoretically, an audit can be viewed as an economic goods or a professional service process (Knechel et al. 2020). Introduction Economic goods viewpoint Professional

Marsden, 2015; Nian and Chuen (2015); Gafar et al., 2021) 4 Background(Cont.) •Support combine Cryptocurrency to Portfolio •Low correlation with traditional assets(Krückeberg and Scholz, 2019) • Improve

characteristics (Matsumoto, 2002) - Institutional ownership - Reliance on implicit claims with their stockholders - Value-relevance of earnings Natural disasters (such as hurricanes: Byard et al. 2007

).; Jacobson, M. Z. (2009). Review of solutions to global warming, air pollution and energy security. Energy & Environmental Science (2), 148-173.; Lechón, Y., de la Rúa, C., & Sáez, R. (2008). Life Cycle

-economy-startup-50cc72f2e37b Cormier and Magnan (2007) Berthelot, Coulmont, and Serret (2012) Kaspereit and Lopatta (2014) De Klerk, De Villiers, and Staden (2015) Ratanacharoenchai et al. (2017) Naimy et

, helping to stimulate the air traffic demand ( Source: International Air Transport Association). For the Thailand tourism industry in the first quarter of 2018, the number of international tourist arrivals

, and 5.4 percent growth in Europe. The improvement of the world economy, lower ticket fare, and the increasing of the number of passenger demand are main factors, helping to stimulate the air traffic

and Metro Public Company Limited was refinanced long term loans for the Si Rat-Outer Ring Road Expressway Project with total of Baht 10,000 Million with floating interest rate by issuing debentures with

follows: 3.1 Al El Israel Airlines (February 2018) 3.2 Oman Air (April 2018) 3.3 Laos Airlines (May 2018) 3.4 Philippines Airlines (October 2018) 4. The Company announced a new collaboration effort with