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Application of ANFIS to the design of elliptical CFST columns
Ngoc-Long Tran,Trong-Cuong Vo,Duy-Duan Nguyen,Van-Quang Nguyen,Huy-Khanh Dang,Viet-Linh Tran Techno-Press 2023 Advances in computational design Vol.8 No.2
Elliptical concrete-filled steel tubular (CFST) column is widely used in modern structures for both aesthetical appeal and structural performance benefits. The ultimate axial load is a critical factor for designing the elliptical CFST short columns. However, there are complications of geometric and material interactions, which make a difficulty in determining a simple model for predicting the ultimate axial load of elliptical CFST short columns. This study aims to propose an efficient adaptive neuro-fuzzy inference system (ANFIS) model for predicting the ultimate axial load of elliptical CFST short columns. In the proposed method, the ANFIS model is used to establish a relationship between the ultimate axial load and geometric and material properties of elliptical CFST short columns. Accordingly, a total of 188 experimental and simulation datasets of elliptical CFST short columns are used to develop the ANFIS models. The performance of the proposed ANFIS model is compared with that of existing design formulas. The results show that the proposed ANFIS model is more accurate than existing empirical and theoretical formulas. Finally, an explicit formula and a Graphical User Interface (GUI) tool are developed to apply the proposed ANFIS model for practical use.
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Application and validation of a consumer ethnocentrism scale in a young Vietnamese market segment
Trang P. Tran,Bich Khanh Ngoc Ho,Truc Quang Le,Hung Trong Hoang 한국마케팅과학회 2017 마케팅과학연구 Vol.27 No.1
The primary objective of this study is to validate a consumer ethnocentrism scale in Vietnam on the basis of the existing scale, CETSCALE, proposed by Shimp and Sharma. The results from a student population show that the revised scale consists of two elements: affective and behavioral. The multidimensional structure of the revised scale is supported in the exploratory factor analysis phase and confirmed in the confirmatory factor analysis phase. The findings also indicate that convergent validity, discriminant validity, and nomological validity of the revised scale are established. The paper starts with a literature review of consumer ethnocentrism, includes methodology and discussions, and concludes with theoretical and managerial implications.
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