Liu-Qing Li, Yi-Tian Gao, Xin Yu, Gao-Fu Deng and Cui-Cui Ding
This paper aims to study the Gramian solutions and solitonic interactions of a (2 + 1)-dimensional Broer–Kaup–Kupershmidt (BKK) system, which models the nonlinear and dispersive…
Abstract
Purpose
This paper aims to study the Gramian solutions and solitonic interactions of a (2 + 1)-dimensional Broer–Kaup–Kupershmidt (BKK) system, which models the nonlinear and dispersive long gravity waves traveling along two horizontal directions in the shallow water of uniform depth.
Design/methodology/approach
Pfaffian technique is used to construct the Gramian solutions of the (2 + 1)-dimensional BKK system. Asymptotic analysis is applied on the two-soliton solutions to study the interaction properties.
Findings
N-soliton solutions in the Gramian with a real function ζ(y) of the (2 + 1)-dimensional BKK system are constructed and proved, where N is a positive integer and y is the scaled space variable. Conditions of elastic and inelastic interactions between the two solitons are revealed asymptotically. For the three and four solitons, elastic, inelastic interactions and soliton resonances are discussed graphically. Effect of the wave numbers, initial phases and ζ(y) on the solitonic interactions is also studied.
Originality/value
Shallow water waves are studied for the applications in environmental engineering and hydraulic engineering. This paper studies the shallow water waves through the Gramian solutions of a (2 + 1)-dimensional BKK system and provides some phenomena that have not been studied.
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Abdulaziz Ahmad, Weidong Wang, Shi Qiu, Wenjuan Wang, Tian-Yi Wang, Bamaiyi Usman Aliyu, Ying Sun and Abubakar Sadiq Ismail
Unlike previous research that primarily utilized structural equation modelling (SEM) to evaluate safety hazards in subway projects, this research aims to utilize a hybrid approach…
Abstract
Purpose
Unlike previous research that primarily utilized structural equation modelling (SEM) to evaluate safety hazards in subway projects, this research aims to utilize a hybrid approach to investigate and scrutinize the key indicators of safety hazards leading to accidents, thereby hindering the progress of subway projects in China, taking into cognizance the multiple stakeholder’s perspective.
Design/methodology/approach
By administering a survey questionnaire to 373 highly involved stakeholders in subway projects spanning Changsha, Beijing and Qingdao, China, our approach incorporated a four-staged composite amalgamation of exploratory factor analysis (EFA), confirmatory factor analysis (CFA), covariance-based structural equation modelling (CB-SEM) and artificial neural network (ANN) to develop an optimized model that determines the causal relationships and interactions among safety hazards in subway construction projects.
Findings
The optimized model delineated the influence of individual safety hazards on subway projects. The feasibility and applicability of the model developed was demonstrated on an actual subway project under construction in Changsha city. The outcomes revealed that the progress of subway projects is significantly influenced by risks associated with project management, environmental factors, subterranean conditions and technical hazards. In contrast, risks related to construction and human factors did not exhibit a significant impact on subway construction progress.
Research limitations/implications
While our study provides valuable insights, it is important to acknowledge the limitation of relying on theoretical approaches without empirical validation from experiments or the field. In future research, we plan to address this limitation by assessing the SEM using empirical data. This will involve a comprehensive comparison of outcomes derived from CB-SEM with those obtained through SEM-ANN methods. Such an empirical validation process is crucial for enhancing the overall efficiency and robustness of the proposed methodologies.
Originality/value
The established hybrid model revealed complex non-linear connections among indicators in the intricate project, enabling the recognition of primary hazards and offering direction to improve management of safety in the construction of subways.
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Jianlin Wang, Yi Tian, Malin Song, Jiajia Zhao and Hongzhou Li
In the creation of coal consumption reduction policy, the Chinese Government selected eight provinces as key provinces and encouraged them to replace coal with other non-coal…
Abstract
Purpose
In the creation of coal consumption reduction policy, the Chinese Government selected eight provinces as key provinces and encouraged them to replace coal with other non-coal energy, involving Kaldor-Hicks improvement. The purpose of this paper is to answer how much coal can be conserved if Kaldor-Hicks improvement is considered.
Design/methodology/approach
A DEA model reflecting Kaldor-Hicks improvement is suggested to calculate the potential of coal reduction, and an endogenous directional distance function model is proposed to calculate the energy consumption efficiency.
Findings
The results show that the non-key provinces wasted more coal than the key provinces, although the latter are of more concern. From the Kaldor-Hicks criterion, ten non-key provinces in a certain year can save more coal from an energy substitution policy and eight key provinces cannot. Through measurement of coal and energy efficiency, it is also found that provinces with an abundance of coal perform the worst in China.
Originality/value
Previous studies measuring Chinese saving potential of coal mainly focused on Pareto-Koopmans criterion, not consistent to policy practices. This study changes to Kaldor-Hicks criterion, allowing to make some factors better off and other factors worse off.
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The purpose of this paper is to analyze long-term institutional causes and consequences of preference falsification by studying the evolution of China’s patriarchal clan system.
Abstract
Purpose
The purpose of this paper is to analyze long-term institutional causes and consequences of preference falsification by studying the evolution of China’s patriarchal clan system.
Design/methodology/approach
The historic study shows that although the clan system was abolished in the Qin dynasty, it re-emerged among high-standing families in the Han dynasty and spread to common people after the Tang dynasty.
Findings
The author submits that the clan system was an institutional response to the preference falsification problem that arose due to the dictatorial political institutions first established in the Qin dynasty. It helped people to take collective action by themselves and also opened a back door to influence government decisions. A piece of clear evidence is the co-evolution of the clan system and government personnel system.
Social implications
In this sense, the clan system probably also helped to prolong the political institutions for 2,000 years.
Originality/value
This is the first institutional study on the clan system in China.
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“Clothes from heaven are without seam (Tian Yi Wu Feng)”, the Chinese idiom says. A study has been carried out to investigate the past and present techniques, processes and…
Abstract
“Clothes from heaven are without seam (Tian Yi Wu Feng)”, the Chinese idiom says. A study has been carried out to investigate the past and present techniques, processes and procedures that enable creation of seamless fashion towards innovative ends. This paper puts the study into context, summarises these techniques and processes as well as their procedures in creating seamless objects and/or clothing items. and further appraises the favourability of these techniques towards the ends of seamless fashion creation.
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This paper aims to establish an organizational learning system model based on both western and Chinese management thoughts.
Abstract
Purpose
This paper aims to establish an organizational learning system model based on both western and Chinese management thoughts.
Design/methodology/approach
The approach is a conceptual model which is based on research within the field.
Findings
The model consists of nine interrelated organizational learning sub‐systems including “discovering”, “innovating”, “selecting”, “executing”, “transferring”, “reflecting”, “acquiring knowledge from environment”, “contributing knowledge to environment”, and “building organizational memory” ones. The evidences in some famous Chinese traditional cultural classics (including Great Learning, Doctrine of the Mean, The Analects of Confucius, Book of Change, Tao‐Te‐Ching, The Art of War and Chuan‐Xi‐Lu) that support the rationale of the model are described and analyzed.
Originality/value
Several propositions are developed and it is hoped that the model is applicable in both eastern and western business environments.
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Yunzhou Du, Yang Sun, Yiyi Su, Phillip Kim and Liangding Jia
Yi‐xiang Tian, Qiu‐ping Yang and Jing‐tao Yuan
Reverse floating interest rate‐linked structured products are important innovative products for investors to achieve a relatively high yield at low interest rates, and the…
Abstract
Purpose
Reverse floating interest rate‐linked structured products are important innovative products for investors to achieve a relatively high yield at low interest rates, and the reasonable pricing of such products is an important factor to influence investors' needs and issuers' profits. The purpose of this paper is to empirically analyze the rationality of the pricing of reverse floating interest rate‐linked products.
Design/methodology/approach
This paper combines the Itô's Lemma and introduces the Black‐Derman‐Toy (BDT) model into the time‐varying volatility to build a binary tree interest rates BDT model under the time‐varying volatility, and to establish the pricing model of reverse floating interest rate‐linked products. Dozens of product data of ABN AMRO Bank and other world‐renowned banks or financial institutions are empirically analyzed.
Findings
The results show that the average pricing of these products is high, and the expected rate of return of the product is lower than the same period of the Five‐year US Treasury Bill rate.
Originality/value
This paper has combined the theory and practice together. The research method described in this paper is of significance to the pricing of interest rate‐linked structured products, and the pricing method of binary tree BDT model to solve the term structure of interest rates and estimation problem of volatility term structure of interest rates.