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Water jet propulsion is widely used in various military and civilian fields due to its advantages of simple structure and high propulsion efficiency. The process of mooring involves utilizing specially designed equipment to secure a ship at a designated berth. During the process of water jet propulsion, the single propeller operates within a complex and turbulent three-dimensional flow. Hence, studying the coupling between the water jet propeller and the hull is critical to comprehending the characteristics of the device and the distribution of the flow field in detail.

Firstly, we conducted computational fluid dynamics (CFD)-based self-propulsion calculations to evaluate the interaction between the hull and the propeller. We subsequently analyzed the propeller's performance and the forces acting on the hull to understand how the presence or absence of the hull influenced the water jet propeller. Finally, we performed calculations and analysis of the cavitation characteristics of the coupling between the hull and the water jet propeller, considering different rotational speeds and water depths at the bottom of the pool.

The study demonstrated that the presence of the hull boundary layer under the hull-propeller coupling condition led to reduced uniformity of propeller inlet flow and lower efficiency of the propulsion pump. However, it also increased the bias toward low-flow conditions. Additionally, increasing the impeller speed led to a gradual increase in the cavitation volume within the water jet propeller, resulting in a gradual decrease in the propeller's performance.

This research provides the technical support required for effective design and operation of water jet propulsion systems. This paper involves studying and analyzing the performance and flow field of the coupling between the hull and propeller under mooring conditions with a specified hull model.

Dubai’s Electronic Transactions Law (“ETL”) is designed to stimulate E‐commerce in the emirate by improving the authenticity and integrity of electronic transactions. The ETL recognizes the legal validity of electronic documents and electronic signatures as acceptable substitutes for paper documents and ink signatures, respectively. Accordingly, electronic records may be used to comply with a statutory writing requirement, original document requirement and retention requirement, and an electronic signature attached to an electronic document may be used to comply with a statutory requirement for a paper‐and‐ink signature. If all parties are in agreement, a contract may be in electronic form and is just as legally enforceable as a written one. The ETL does not mandate Dubai’s governmental agencies to utilize electronic documents, but they may elect to do so. The ETL has created a compulsory system of licensing of Certification Authorities (“CA”). Their role is to ascertain the identity of a subscriber and to attest in an issued Certificate that the electronic signature used by that subscriber belongs to him. The ETL contains a list of computer crimes. The statute establishes a sound framework for E‐commerce, but it could be improved by adding consumer protections, more computer crimes, mandatory Egovernment, I.T. courts and long‐arm jurisdiction. The ETL’s exclusion of wills should be eliminated.

Under the trend of global economic integration and the new context of stagflation, frequent fluctuations in international interest rates are exerting far-reaching impacts on the world economy. In this paper, the transmission mechanism of the impact of fluctuations in international interest rates (specifically, the American interest rate) on the bankruptcy risk in China's pillar industry, the construction industry (which is also sensitive to interest rates), is examined.

Using an improved contingent claims analysis, the bankruptcy risk of enterprises is calculated in this paper. Additionally, an individual fixed-effects model is developed to investigate the mediating effects of international interest rates on the bankruptcy risk in the Chinese construction industry. The heterogeneity of subindustries in the industrial chain and the impact of China's energy consumption structure are also analysed in this paper.

The findings show that fluctuations in international interest rates, which affect the bankruptcy risk of China's construction industry, are mainly transmitted through two major pathways, namely, commodity price effects and exchange rate effects. In addition, the authors examine the important impact of China's energy consumption structure on risk transmission and assess the transmission and sharing of risks within the industrial chain.

First, in the research field, the study of international interest rate risk is extended to domestic-oriented industries. Second, in terms of the research content, this paper is focused on China-specific issues, including the significant influence of China's energy consumption structure characteristics and the risk contagion (and risk sharing) as determined by the current development of the Chinese construction industry. Third, in terms of research methods a modified contingent claim analysis approach to bankruptcy risk indicators is adopted for this study, thus overcoming the problems of data frequency, market sentiment and financial data fraud, which are issues that are ignored by most relevant studies.

Building on a small body of work, the authors' study aims to investigate some important antecedents of online review characteristics in the Chinese restaurant industry.

Using a data set of restaurant reviews collected from a most popular review platform in China, the authors conduct a series of analyses to examine the influence of travel experience and travel distance on travelers' review characteristics in terms of review rating and media richness. The moderating effect of restaurant price on the influence is also investigated.

Travelers with a longer travel distance and more travel experience tend to provide higher and lower online ratings, respectively, which can be explained by the construal level theory (CLT) and the expectation-confirmation theory (ECT), respectively. Furthermore, these strong feelings can then induce travelers to post enriched reviews with more pictures, more words and more affective words to release consumption tension. Besides, restaurant price can moderate these relationships.

Distinguished from most studies which mainly focus on the consequences of online review characteristics or antecedents of review helpfulness, the authors pay attention to the effects of travelers' individual differences in terms of travel distance and travel experience on travelers' online reviewing behavior. In addition to review rating, the authors also focus on media richness in terms of visual and textual information. The authors' research findings can benefit restaurant consumers and managers for their online word-of-mouth utilization and management.

This study aims to propose an extended (3 + 1)-dimensional integrable Kadomtsev–Petviashvili equation characterized by adding three new linear terms.

This study formally uses Painlevé test to confirm the integrability of the new system.

The Painlevé analysis shows that the compatibility condition for integrability does not die away by adding three new linear terms with distinct coefficients.

This study uses the Hirota's bilinear method to explore multiple soliton solutions where phase shifts and phase variable are explored.

This study also furnishes a class of lump solutions (LSs), which are rationally localized in all directions in space, using distinct values of the parameters via using the positive quadratic function method.

This study also shows the power of the simplified Hirota’s method in handling integrable equations.

This paper introduces an original work with newly developed Painlevé integrable model and shows new useful findings.

Entrepreneurship is important for economic growth, through its role in the provision of employment. In the recent past, a number of African universities have developed entrepreneurship education courses to facilitate the growing demand for entrepreneurs in the market. An immediate outcome anticipated from entrepreneurship education is to increase entrepreneurial intention (EI) among the participants. Unfortunately, most of the entrepreneurship education in developing economies has not been linked to an increase in the EI of students. This paper thus proposes that it is when students possess high levels of psychological capital and perceive positive social norms that entrepreneurship education will lead to positive EI. The purpose of this paper is to establish the relationship between perceived social norms (PSN), psychological capital and EI of university students.

Quantitative data were collected through a self-administered questionnaire on a random sample of 196 final year entrepreneurship and business management students, from three universities in Bukavu (East of DRC). Structural equation modeling was used to test the research hypotheses.

The paper provides four main findings. First, PSN and psychological capital have a positive significant effect on EI. Second, PSN contribute more to this effect than psychological capital. Third, PSN make a positive and significant effect on psychological capital. Lastly, psychological capital positively mediates the relationship between PSN and EI.

This study could have benefited from a qualitative approach to have a more in-depth explanation of these relationships. The study is conducted amongst students who operate in a controlled environment. This may not reflect the actual behavior of entrepreneurs.

This work provides cues of what entrepreneurship educators should consider as they recruit and train students. Specifically, the study highlights the importance of students’ psychological capital and positive social norms in transforming entrepreneurial education into intention.

This study adds value to knowledge by highlighting the mediating role of psychological capital on the relationship between PSN and EI.

The purpose of this study is to form a linear structure of components of the modified Korteweg–De Vries (mKdV) hierarchy. The new model includes 3rd order standard mKdV equation, 5th order and 7th order mKdV equations.

The authors investigate Painlevé integrability of the constructed linear structure.

The Painlevé analysis demonstrates that established sum of integrable models retains the integrability of each component.

The research also presents a set of rational schemes of trigonometric and hyperbolic functions to derive breather solutions.

The authors also furnish a variety of solitonic solutions and complex solutions as well.

The work formally furnishes algorithms for extending integrable equations that consist of components of a hierarchy.

The paper presents an original work for developing Painlevé integrable model via using components of a hierarchy.