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The development of written accuracy among learners of English as a Second Language (ESL) has always been a primary concern for ESL teachers and researchers in Applied Linguistics and Second Language Acquisition (SLA). While a vast body of research has examined written corrective feedback on students’ written products, few studies have focused on the development of written accuracy among Arabic speaking learners of English using automated feedback tools. This case study first examined the level of written accuracy of Bahraini learners of English in their second year at a higher education institute, highlighting the frequency of errors influenced by their first language (Arabic). The course following this first stage included a significant component of automated feedback on students’ writing; and this study explored the impact that the use of these feedback tools had on learners’ writing in English, tracking development over the course of an academic semester. A corpus of students’ initial writings and subsequent revisions was analysed to identify whether there was an improvement in the accuracy of students’ texts; and students’ perceptions were elicited.

ﻟط ﺎﻟ ﻣﺎ ﻛﺎ ن ﺗ طوﯾ ر اﻟدﻗﺔ ﻓ ﻲ ﻣﮭﺎ رة اﻟ ﻛﺗﺎﺑﺔ ﺑﯾ ن ﻣﺗ ﻌﻠ ﻣ ﻲ اﻟﻠ ﻐﺔ ا ﻹﻧ ﺟﻠﯾ زﯾﺔ ﻛﻠ ﻐﺔ ﺛﺎﻧﯾﺔ اﻟ ﺷـ ﻐ ل اﻟ ﺷـﺎ ﻏل ﻟ ﻣﻌﻠ ﻣ ﻲ اﻟﻠ ﻐﺔ ا ﻹﻧﺟ ﻠﯾ زﯾﺔ واﻟﺑﺎﺣ ﺛﯾ ن ﻓ ﻲ اﻟﻠ ﻐو ﯾﺎ ت اﻟ ﺗ ط ﺑﯾﻘﯾ ﺔ و ا ﻛﺗ ﺳ ـﺎ ب اﻟﻠ ﻐﺔ اﻟ ﺛﺎﻧﯾ ﺔ. ﻓ ﻲ ﺣ ﯾ ن أ ن ﻣ ﺟ ﻣو ﻋ ﺔ ﻛﺑﯾ ر ة ﻣ ن ا ﻷ ﺑ ﺣ ﺎ ث ﻗد د ر ﺳ ـ ت ﻣ ﻼ ﺣ ظ ﺎ ت ﺗ ﺻ ـ ﺣ ﯾ ﺣ ﯾ ﺔ ﺧ ط ﯾ ﺔ ﻋ ﻠ ﻰ ﻛﺗﺎﺑﺎ ت اﻟط ﻼ ب ، ﻓﻘ د رﻛز ت د را ﺳ ــﺎ ت ﻗﻠﯾﻠ ﺔ ﻋ ﻠ ﻰ ﺗ ط وﯾ ر اﻟ دﻗﺔ ﻓ ﻲ ﻣﮭﺎ رة اﻟ ﻛﺗﺎﺑ ﺔ ﺑﯾ ن ﻣﺗ ﻌﻠ ﻣ ﻲ اﻟﻠ ﻐﺔ ا ﻹ ﻧ ﺟ ﻠﯾ زﯾ ﺔ اﻟﻧﺎ ط ﻘﯾ ن ﺑﺎﻟ ﻌرﺑﯾ ﺔ ﺑﺎ ﺳ ــﺗ ﺧ دا م أدو ا ت اﻟ ﺗ ﻐذﯾ ﺔ ا ﻻ ﺳ ـــﺗ ر ﺟ ﺎ ﻋ ﯾ ﺔ ﻋ ﺑ ر ا ﻹ ﻧﺗ ر ﻧ ت . ﺗ ﺗ ﻧ ﺎ و ل د ر ا ﺳ ـ ـ ﺔ ا ﻟ ﺣ ﺎ ﻟ ﺔ ھ ذ ه أ و ﻻً ﻣ ﺳ ـ ـ ﺗ و ى ا ﻟ د ﻗ ﺔ ا ﻟ ﻣ ﻛ ﺗ و ﺑ ﺔ ﻟ ﻠ ﻣ ﺗ ﻌ ﻠ ﻣ ﯾ ن ا ﻟ ﺑ ﺣ ر ﯾ ﻧ ﯾ ﯾ ن ﻟ ﻠ ﻐ ﺔ ا ﻹ ﻧ ﺟ ﻠ ﯾ ز ﯾ ﺔ ﻓ ﻲ ﺳـ ﻧﺗ ﮭم اﻟﺛﺎﻧﯾ ﺔ ﻓ ﻲ ﻣؤﺳـ ﺳـ ﺔ ﻟﻠﺗ ﻌﻠﯾم اﻟﻌﺎﻟ ﻲ ، ﻣﻊ اﻟﺗ رﻛﯾ ز ﻋﻠ ﻰ ﺗﻛرا ر أ ﺧطﺎ ء اﻟﺗدا ﺧل ﺑﯾ ن اﻟﻠ ﻐﺔ ا ﻻوﻟ ﻰ واﻟﺛﺎﻧﯾﺔ. ﺛم ﺗ ﺳـﺗﻛ ﺷـ ف اﻟد را ﺳـ ﺔ ﺗﺄﺛﯾ ر أ دو ا ت اﻟ ﻣ ﻼﺣظﺎ ت ﻋﺑ ر ا ﻹﻧﺗ رﻧ ت ﻋﻠ ﻰ ﻛﺗﺎﺑﺔ اﻟ ﻣﺗ ﻌﻠ ﻣﯾ ن ﺑﺎﻟﻠ ﻐﺔ ا ﻹﻧ ﺟﻠﯾ زﯾﺔ ﻛﻠ ﻐﺔ ﺛﺎ ﻧﯾ ﺔ، وﺗ ﺗﺑ ﻊ اﻟﺗ طور ﺧﻼل اﻟﻔ ﺻ ـــ ل اﻟ د را ﺳـــ ﻲ. ﯾﺗ ﺿ ـــ ﻣ ن ا ﻟ ﺗ د ﺧ ل ا ﻟ ﻣ ط ﺑ ق ﻟ ﺗ ﺣ ﺳـ ﯾ ن ﺗ ﻧ ﻣ ﯾ ﺔ ﻣ ﮭ ﺎ ر ا ت ا ﻟ ﻣ ﺗ ﻌ ﻠ ﻣ ﯾ ن ﻣ ﻛ و ﻧًﺎ ﻣ ﮭ ﻣً ﺎ ﻟ ﻠ ﺗ ﻌ ﻠ ﯾ ق ﻋ ﺑ ر ا ﻹ ﻧ ﺗ ر ﻧ ت . ﻗ ﺎ ﻣ ت ا ﻟ د ر ا ﺳـ ﺔ ﺑ ﺗ ﺣ ﻠ ﯾ ل ﻣ ﺟ ﻣ و ﻋ ﺔ ﻣ ن ا ﻟ ﻛ ﺗ ﺎ ﺑ ﺎ ت ا ﻷ و ﻟ ﯾ ﺔ وا ﻟ ﻣرا ﺟﻌﺎ ت اﻟ ﻼﺣ ﻘﺔ ﻟﻠط ﻼ ب ، ﺑﺎﻹ ﺿ ﺎﻓﺔ إﻟ ﻰ ﻣر ا ﺟ ﻌﺎ ت اﻟ ﻧ ظ ر ا ء، ﻟﺗﺣ دﯾد ﻣﺎ إ ذا ﻛﺎ ن ھﻧﺎ ك ﺗ ﺣ ﺳ ن ﻓ ﻲ دﻗﺔ اﻟﻧ ﺻ و ص اﻟﻣﻛﺗ و ﺑ ﺔ ﻟﻠط ﻼ ب .

This paper aims to present an iterative path-following method with joint limits to solve the problem of large computation cost, movement exceeding joint limits and poor path-following accuracy for the path planning of hyper-redundant snake-like manipulator.

When a desired path is given, new configuration of the snake-like manipulator is obtained through a geometrical approach, then the joints are repositioned through iterations until all the rotation angles satisfy the imposed joint limits. Finally, a new arrangement is obtained through the analytic solution of the inverse kinematics of hyper-redundant manipulator. Finally, simulations and experiments are carried out to analyze the performance of the proposed path-following method.

Simulation results show that the average computation time is 0.1 ms per step for a hyper-redundant manipulator with 12 degrees of freedom, and the deviation in tip position can be kept below 0.02 mm. Experiments show that all the rotation angles are within joint limits.

Currently , the manipulator is working in open-loop, the elasticity of the driving cable will cause positioning error. In future, close-loop control based on real-time attitude detection will be used in in combination with the path-following method to achieve high-precision trajectory tracking.

Through a series of iterative processes, the proposed method can make the manipulator approach the desired path as much as possible within the joint constraints with high precision and less computation time.

This paper aims to analyze the bearing characteristics of the high speed train window glass under aerodynamic load effects.

In order to obtain the dynamic strain response of passenger compartment window glass during high-speed train crossing the tunnel, taking the passenger compartment window glass of the CRH3 high speed train on Wuhan–Guangzhou High Speed Railway as the research object, this study tests the strain dynamic response and maximum principal stress of the high speed train passing through the tunnel entrance and exit, the tunnel and tunnel groups as well as trains meeting in the tunnel at an average speed of 300 km·h-1.

The results show that while crossing the tunnel, the passenger compartment window glass of high speed train is subjected to the alternating action of positive and negative air pressures, which shows the typical mechanic characteristics of the alternating fatigue stress of positive-negative transient strain. The maximum principal stress of passenger compartment window glass for high speed train caused by tunnel aerodynamic effects does not exceed 5 MPa, and the maximum value occurs at the corresponding time of crossing the tunnel groups. The high speed train window glass bears medium and low strain rates under the action of tunnel aerodynamic effects, while the maximum strain rate occurs at the meeting moment when the window glass meets the train head approaching from the opposite side in the tunnel. The shear modulus of laminated glass PVB film that makes up high speed train window glass is sensitive to the temperature and action time. The dynamically equivalent thickness and stiffness of the laminated glass and the dynamic bearing capacity of the window glass decrease with the increase of the action time under tunnel aerodynamic pressure. Thus, the influence of the loading action time and fatigue under tunnel aerodynamic effects on the glass strength should be considered in the design for the bearing performance of high speed train window glass.

The research results provide data support for the analysis of mechanical characteristics, damage mechanism, strength design and structural optimization of high speed train glass.

In this study, the authors sought to investigate how the implicit social ties of both project owners and potential backers are associated with crowdfunding project success.

Drawing on social ties theory and factors that affect crowdfunding success, in this research, the authors developed a model to study how project owners' and potential backers' implicit social ties are associated with crowdfunding projects' degrees of success. The proposed model was empirically tested with crowdfunding data collected from Kickstarter and social media data collected from Twitter. The authors performed the test using an ordinary least squares (OLS) regression model with fixed effects.

The authors found that project owners' implicit social ties (specifically, their social media activities, degree centrality and betweenness centrality) are significantly and positively associated with crowdfunding projects' degrees of success. Meanwhile, potential project backers' implicit social ties (their social media activities and degree centrality) are negatively associated with crowdfunding projects' degrees of success. The authors also found that project size moderates the effects of project owners' social media activities on projects' degrees of success.

This work contributes to the literature on crowdfunding by investigating how the implicit social ties of both potential backers and project owners on social media are associated with crowdfunding project success. This study extends the previous research on social ties' roles in explaining crowdfunding project success by including implicit social ties, while the literature explored only explicit social ties.

The safety and reliability of high-speed trains rely on the structural integrity of their components and the dynamic performance of the entire vehicle system. This paper aims to define and substantiate the assessment of the structural integrity and dynamical integrity of high-speed trains in both theory and practice. The key principles and approaches will be proposed, and their applications to high-speed trains in China will be presented.

First, the structural integrity and dynamical integrity of high-speed trains are defined, and their relationship is introduced. Then, the principles for assessing the structural integrity of structural and dynamical components are presented and practical examples of gearboxes and dampers are provided. Finally, the principles and approaches for assessing the dynamical integrity of high-speed trains are presented and a novel operational assessment method is further presented.

Vehicle system dynamics is the core of the proposed framework that provides the loads and vibrations on train components and the dynamic performance of the entire vehicle system. For assessing the structural integrity of structural components, an open-loop analysis considering both normal and abnormal vehicle conditions is needed. For assessing the structural integrity of dynamical components, a closed-loop analysis involving the influence of wear and degradation on vehicle system dynamics is needed. The analysis of vehicle system dynamics should follow the principles of complete objects, conditions and indices. Numerical, experimental and operational approaches should be combined to achieve effective assessments.

The practical applications demonstrate that assessing the structural integrity and dynamical integrity of high-speed trains can support better control of critical defects, better lifespan management of train components and better maintenance decision-making for high-speed trains.

This research mainly aims to test the impact of two leadership styles (ethical and servant leadership) on employee creativity; and to determine whether organizational citizenship behavior (OCB) mediates the relationships between them.

The paper relied on a quantitative research approach with a sample of 213 staff from public universities in the United Arab Emirates. In this paper, the partial least square approach (PLS-SEM) was employed in order to verify the proposed hypotheses.

The outcomes confirmed that OCB has a positive impact on employee creativity. Additionally, the findings indicated that ethical leadership positively affected OCB and employee creativity. It was also confirmed that servant leadership has a significant positive impact on OCB and employee creativity. Finally, the findings revealed that OCB fully mediates the linkages among servant and ethical leadership and employee creativity.

This paper acknowledges the existing gaps in the prior literature, and enables us to understand clearly about the significance of ethical as well as servant leadership in affecting employee creativity via OCB as a mediator.

This study investigates the relationship between feelings of loneliness in the workplace, life satisfaction, affect, hope and expressivity among hotel employees.

The research model was tested via structural equation modeling based on the empirical data collected from hotel employees in Antalya, Turkey.

The research findings suggest that emotional deprivation and social companionship have a significant impact on life satisfaction, that life satisfaction has a significant impact on positive and negative emotions, and that positive and negative emotions have the same impact on pathways and agencies.

The research findings should assist researchers and practitioners to understand the behaviors of hotel employees in continuous interaction and relationship with individuals to motivate them while providing more effective services.

This study aims to present a comprehensive knowledge mapping and an in-depth analysis of plastic and sustainability research to understand better global trends and directions in this field that emerged between 1995 and 2022.

This study presents a visual analysis of 1933 research articles listed in the Web of Science (WoS) databases between the years 1995 and 2022 related to plastic and sustainability. The knowledge mapping based on CiteSpace and VOSviewer presents the current research status, which contains the analysis of the collaboration network, co-citation network, references with citation bursts and keyword analysis.

The results reveal that China and the USA are the most prominent countries in exploring the notion of sustainability and plastic. The Chinese Academy of Science is the most prominent institution. Chai Qiang, Friedrich Daniel, Sahajwalla Veena and Ok Yong Sik are the most prolific authors in this field. Furthermore, circular economy, bioplastic, sustainable development, polyester and bioplastics are the highly discussed issues in recent years. Not surprisingly, COVID-19 is the latest topic of discussion started in 2021 due to its negative impact on plastic pollution and the challenges it posed to sustainability.

This study is among the pioneers to shed light on the current research status of plastic and sustainability using the bibliometric method and the newest data. This study also suggests that collaborations between scholars and institutions require to be enhanced for better management of plastic pollution and to contribute to sustainable development.

The literature review aims to facilitate a broader understanding of on-demand service platform operations management and proposes potential research directions for scholars.

This study searches four databases for relevant literature on on-demand service platform operations management and selects 72 papers for this review. According to the research context, the literature can be divided into research on “a single platform” and research on “multiple platforms”. According to the research methods, the literature can be classified into “Mathematical Models”, “Empirical Studies”, “Multiple Methods” and “Literature Review”. Through comparative analysis, we identify research gaps and propose five future research agendas.

This paper proposes five research agendas for future research on on-demand service platform operations management. First, research can be done to combine classic research problems in the field of operations management with platform characteristics. Second, both the dynamic and steady-state issues of on-demand service platforms can be further explored. Third, research employing mathematical models and empirical analysis simultaneously can be more fruitful. Fourth, more research efforts on the various interactions among two or more platforms can be pursued. Last but not least, it is worthwhile to examine new models and paths that have emerged during the latest development of the platform economy.

Through categorizing the literature into two research contexts as well as classifying it according to four research methods, this article clearly shows the research progresses made so far in on-demand service platform operations management and provides future research directions.

The purpose of this paper is to analyse the moderating role of psychological empowerment on the relationships between authentic leadership and innovative work behaviour, as well as transformational leadership and innovative work behaviour.

We have applied the mixed-method research on the selected case study. The quantitative field study was conducted on a sample of 126 employees in a multinational technological company. A series of paired sample t-tests were followed by a hierarchical regression analysis to test the hypotheses. The qualitative study consists of a content analysis of in-depth semi-structured interviews with four leaders.

The research provides further confirmation of the positive relationship between leadership and innovative work behaviour. Specifically, the results showed that psychological empowerment moderates the relationship between leadership (authentic as well as transformational leadership) and innovative work behaviour.

This paper contributed to leadership and innovation literature and provided insights in studying the boundary conditions on the relationship between authentic leadership, as well as transformational leadership, in stimulating innovative work behaviour through the moderating role of psychological empowerment. The added value is expanded by introducing the comparison of the two leadership theories.