Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ruey-Chyn Tsaur"'
Publikováno v:
Applied Mathematics in Science and Engineering, Vol 32, Iss 1 (2024)
Fuzzy portfolio selection on the guaranteed return rate has been proposed to study excess investment in different dimensions of risk preferences. However, the theory of behavioural finance proposes that the investment proportions of securities are no
Externí odkaz:
https://doaj.org/article/0afa7029739746b48870adada583fcb5
Publikováno v:
Mathematics, Vol 11, Iss 5, p 1143 (2023)
Fuzzy portfolio models have received many researchers’ focus on the issue of risk preferences. The portfolio based on guaranteed return rates has been developing and considering the dimension of excess investment for the investors in different risk
Externí odkaz:
https://doaj.org/article/abc090430b67408e912e0a09e1a48849
Publikováno v:
Applied Sciences, Vol 13, Iss 3, p 1430 (2023)
Taiwan is a major exporter and producer of machinery and machine tools in the world. There are at least hundreds of components for various machining machines. According to the concept of Taguchi loss function, when the process quality of the spare pa
Externí odkaz:
https://doaj.org/article/dfe8148779834ac7936ef83496e8399f
Publikováno v:
Mathematics, Vol 11, Iss 1, p 44 (2022)
Portfolio selection is a major topic for investors to allocate their assets and maximize their profit under constrained risk. For uncertain investment behavior in a vagueness environment, some researchers have devoted themselves to this field of fuzz
Externí odkaz:
https://doaj.org/article/78ecc979f0da424e992a5093f69a57d4
Publikováno v:
Axioms, Vol 11, Iss 12, p 668 (2022)
Green supply chain management has become enormously significant over the last two decades. Traditional supply chain risk management is inept at dealing with the intangible criteria related to environmental issues. Contrary to most of the previous res
Externí odkaz:
https://doaj.org/article/27a2f743db154eb08788b509a1f5704c
Publikováno v:
Mathematics, Vol 10, Iss 21, p 3961 (2022)
The random variable X is used to represent the normal process containing two important parameters—the process average and the process standard deviation. The variable is transformed using Y = (X − T)/d, where T is the target value and d is the to
Externí odkaz:
https://doaj.org/article/f226e4fd75d6411c9a02ea007b0e7531
Publikováno v:
Axioms, Vol 11, Iss 10, p 550 (2022)
The supply chain of the tourism industry, including air transportation, travel agencies, souvenirs, and hotel services, is almost at a breaking point, causing a rise in unemployment with huge losses during the COVID-19 pandemic period. In order to ov
Externí odkaz:
https://doaj.org/article/19d605d56c5647d38a68e60e29445952
Publikováno v:
IEEE Access, Vol 7, Pp 119026-119040 (2019)
With tourism development in China, the influx of tourists in popular tourist attractions has become more frequent. However, space cannot accommodate such a large influx of tourists. Through empirical testing, this research identified 23 variables tha
Externí odkaz:
https://doaj.org/article/c2c01d1e95204a048e444612e57188fa
Publikováno v:
Mathematics, Vol 10, Iss 18, p 3304 (2022)
Fuzzy portfolio selection has resulted in many researchers to focus on this field. Based on the risk attitudes, this study discusses the risk attitudes in a decision group for portfolio selection. Therefore, we adopt the risk attitudes to describe th
Externí odkaz:
https://doaj.org/article/bcb1490e487647c985775b53a4692319
Publikováno v:
Mathematics, Vol 10, Iss 11, p 1861 (2022)
In this era of information explosion, smartphones have become a necessary device in our daily life. In order to select a better smartphone, most users try to collect more attributes to help them purchase their own smartphones, including the brand ima
Externí odkaz:
https://doaj.org/article/6207e61ceee5421286e47898b6ccd9de