Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Yongzeng LAI"'
Publikováno v:
Electronic Research Archive, Vol 31, Iss 5, Pp 2667-2688 (2023)
Based on the data from January 2007 to December 2021, this paper selects 14 representatives from four levels of the extreme risk of financial institutions, the contagion effect between financial systems, volatility and instability of financial market
Externí odkaz:
https://doaj.org/article/4b23b73871cd4536a9e798218bd2bd72
Publikováno v:
Quantitative Finance and Economics, Vol 6, Iss 4, Pp 604-621 (2022)
This paper aims to measure the impacts of environmental policy uncertainty on green innovation and explore the transmission channel that is less understood in past scientific works. In this paper, we use a newspaper-based sentiment mining approach to
Externí odkaz:
https://doaj.org/article/83a37335106c476d85a29f1430074e89
Publikováno v:
Mathematics, Vol 11, Iss 24, p 4919 (2023)
According to the United Nations World Tourism Organization, tourism promotes sustainable economic development. Ensuring tourism safety is an essential prerequisite for its sustainable development. In this paper, based on the three evaluation index sy
Externí odkaz:
https://doaj.org/article/6db7eb292976485f8764a48d4abfa29f
Publikováno v:
Humanities & Social Sciences Communications, Vol 7, Iss 1, Pp 1-12 (2020)
Abstract With the outbreak of COVID-19 in Wuhan, aggressive countermeasures have been taken, including the implementation of the unprecedented lockdown of the city, which will necessarily cause huge economic losses for the city of Wuhan. In this pape
Externí odkaz:
https://doaj.org/article/b8486da794f94b4286c78432b01ba461
Publikováno v:
Mathematics, Vol 11, Iss 9, p 1985 (2023)
Accurate stock price prediction has an important role in stock investment. Because stock price data are characterized by high frequency, nonlinearity, and long memory, predicting stock prices precisely is challenging. Various forecasting methods have
Externí odkaz:
https://doaj.org/article/570576d5c73a49e8b45cdd2a3a1f1b91
Publikováno v:
Systems Science & Control Engineering, Vol 8, Iss 1, Pp 576-604 (2020)
This paper discusses the pricing of basket credit linked notes (BCLN) under the reduced model. Three types of BCLNs are discussed: the first, the second and the mth-to-default BCLNs with and without counterparty risks. Based on conditional independen
Externí odkaz:
https://doaj.org/article/a7a723cc7a034dabbf8b59d060800819
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2019, Iss 50, Pp 1-15 (2019)
In this paper, we study the bifurcation of limit cycles of the periodic annulus of two classes of cubic isochronous systems. By using complete elliptic integrals of the first, second kinds and the Chebyshev criterion, we show that the upper bound for
Externí odkaz:
https://doaj.org/article/95e9b0a16f9f437b91a9a737dacac5db
Publikováno v:
Mathematics, Vol 10, Iss 3, p 400 (2022)
The rational allocation and utilization of key corporate resources is the key to the success of collaborative innovation projects. Finding an optimal strategy for the allocation and utilization of key resources is of great significance for promoting
Externí odkaz:
https://doaj.org/article/85550fae222d457d825ec90e037ed5dd
Publikováno v:
Electronic Journal of Differential Equations, Vol 2013, Iss 150,, Pp 1-21 (2013)
In this article, we study the existence of an infinite number of subharmonic periodic solutions to a class of second-order neutral nonlinear functional differential equations. Subdifferentiability of lower semicontinuous convex functions $varphi(x(t)
Externí odkaz:
https://doaj.org/article/2738c17575fa4a70ad847199d8f031dc
Publikováno v:
Abstract and Applied Analysis, Vol 2012 (2012)
By introducing subdifferentiability of lower semicontinuous convex function φ(x(t),x(t−τ)) and its conjugate function, as well as critical point theory and operator equation theory, we obtain the existence of multiple subharmonic periodic solutio
Externí odkaz:
https://doaj.org/article/d24cb3f3712847b38b6871b13dd2160c