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1 – 3 of 3Bingqian Chen, Anqiang Wang, Qing Guo, Jiayin Dai and Yongshou Liu
This paper aims to solve the problem that pipes conveying fluid are faced with severe reliability failures under the complicated working environment.
Abstract
Purpose
This paper aims to solve the problem that pipes conveying fluid are faced with severe reliability failures under the complicated working environment.
Design/methodology/approach
This paper proposes a dynamic reliability and variance-based global sensitivity analysis (GSA) strategy with non-probabilistic convex model for pipes conveying fluid based on the first passage principle failure mechanism. To illustrate the influence of input uncertainty on output uncertainty of non-probability, the main index and the total index of variance-based GSA analysis are used. Furthermore, considering the efficiency of traditional simulation method, an active learning Kriging surrogate model is introduced to estimate the dynamic reliability and GSA indices of the structure system under random vibration.
Findings
The variance-based GSA analysis can measure the effect of input variables of convex model on the dynamic reliability, which provides useful reference and guidance for the design and optimization of pipes conveying fluid. For designers, the rankings and values of main and total indices have essential guiding role in engineering practice.
Originality/value
The effectiveness of the proposed method to calculate the dynamic reliability and sensitivity of pipes conveying fluid while ensuring the calculation accuracy and efficiency in the meantime.
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Keywords
Chen Wei, Xin Chang and Bingqian Wang
The purpose of this paper is to present a robust control design method for uncertain multi‐time‐delay linear system.
Abstract
Purpose
The purpose of this paper is to present a robust control design method for uncertain multi‐time‐delay linear system.
Design/methodology/approach
Delay‐dependent stability conditions are given based on time‐dependent Lyapunov‐Krasovskii functional. By using the key technical lemma (Lemma 1) and the Schur Complement Lemma, the robust control design problem is transferred to the problem of solving several linear matrix inequalities, which can be easily realized by MATLAB Toolbox.
Findings
Delay‐dependent stability analysis and control design are less conservative than delay‐independent one, theoretically.
Originality/value
Both state delay and input delay are studied in this paper. Moreover, the uncertainties considered include not only parameter uncertainties, but also noise disturbance.
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This paper examines radical reform of the Chinese public accounting profession in the 1990s. In particular, the paper seeks to provide a more nuanced understanding of the sources…
Abstract
Purpose
This paper examines radical reform of the Chinese public accounting profession in the 1990s. In particular, the paper seeks to provide a more nuanced understanding of the sources, responses and processes of this radical institutional change that effectively paved the way for development of the Chinese accounting profession into the twenty-first century.
Design/methodology/approach
The empirical data that inform this study come from both archival materials (mostly in Chinese) and in-depth interviews. These data are analysed and interpreted from a neo-institutionalist perspective, drawing, in particular, on the concept of institutional logics and the concept of institutional work.
Findings
A state logic initially guided the development of the Chinese accounting profession but was seriously challenged in the 1990s following a series of high profile financial scandals. The findings reveal a shift to a new professional logic, which was made possible through multiple forms of institutional works instigated by various state actors.
Originality/value
Research into the radical reform of the Chinese public accounting profession in the 1990s was mostly quantitative in nature, focussing mainly on one reform programme, i.e. the disaffiliation of the accounting firms from their sponsoring agencies. This paper adopts a qualitative approach and is aimed at providing a deeper and more nuanced understanding of the institutional change process within its political and economic contexts.
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