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Visual feedback control is a promising solution for robots work in unstructured environments, and this is accomplished by estimation of the time derivative relationship between the image features and the robot moving. While some of the drawbacks associated with most visual servoing (VS) approaches include the vision–motor mapping computation and the robots’ dynamic performance, the problem of designing optimal and more effective VS systems still remains challenging. Thus, the purpose of this paper is to propose and evaluate the VS method for robots in an unstructured environment.

This paper presents a new model-free VS control of a robotic manipulator, for which an adaptive estimator aid by network learning is proposed using online estimation of the vision–motor mapping relationship in an environment without the knowledge of statistical noise. Based on the adaptive estimator, a model-free VS schema was constructed by introducing an active disturbance rejection control (ADRC). In our schema, the VS system was designed independently of the robot kinematic model.

The various simulations and experiments were conducted to verify the proposed approach by using an eye-in-hand robot manipulator without calibration and vision depth information, which can improve the autonomous maneuverability of the robot and also allow the robot to adapt its motion according to the image feature changes in real time. In the current method, the image feature trajectory was stable in the camera field range, and the robot’s end motion trajectory did not exhibit shock retreat. The results showed that the steady-state errors of image features was within 19.74 pixels, the robot positioning was stable within 1.53 mm and 0.0373 rad and the convergence rate of the control system was less than 7.21 s in real grasping tasks.

Compared with traditional Kalman filtering for image-based VS and position-based VS methods, this paper adopts the model-free VS method based on the adaptive mapping estimator combination with the ADRC controller, which is effective for improving the dynamic performance of robot systems. The proposed model-free VS schema is suitable for robots’ grasping manipulation in unstructured environments.

This chapter reviews research on age-related differences in how consumers process information. Specifically, it discusses many of the effects of aging on the quality and quantity of consumers' sensory, cognitive, and emotional functioning. Some studies suggest that the manner in which elderly (age 65 and over) consumers process information may render them more vulnerable than young and middle-aged consumers to malign persuasion attempts. This chapter reveals that age has selective effects on information processing such that elderly consumers are sometimes more susceptible to marketing influence and sometimes they are less susceptible.

A schema is a concept used to describe the organisation of memory about an object. Schema are perceptual prototypes abstracted from numerous episodic events based on their similarities or commonalities. In tourism, a schema may be termed a network, mental model, social schema, stereotype, social role, script, worldview, heuristics or archetype. A schema is flexible. New information may be either assimilated or accommodated based on its degree of congruity. Schema incongruent information requires more mental effort to process. The concept is used in research on destination brand image, storytelling, social relationships, attitude change and transformation during travel. The concept is useful in discussion of the change to a sustainable worldview.

The aim of this research was to investigate fans’ responses toward a sponsor that has had a long-standing sponsorship deal with a club and decided also to sponsor the club’s rival.

A long-term sponsorship deal between a retsina wine company and a popular football club and a newly established deal between the company and the main rival club were selected as the research setting. Data were collected from a total sample of 302 participants, fans of the two teams, using an online survey and PLS-SEM was employed to test the relationships of the proposed structural model.

The results provided evidence for the importance of the inclusion of perceptions of fit for both teams to the model as it impacted the responses in the joint sponsorship. Team identification emerged significant for improving fans perceptions of fit between the sponsor and their favorite club but also led fans of the long-term sponsored club to feel betrayed from the sponsor. The sense of betrayal impacted the level of fit, the rejection of sponsorship but did not emerge significant for driving negative responses toward the sponsor’s brand. The same held for the rejection of the joint sponsorship.

This is the very first study that incorporated the effects of the perceptions of fit of two rival clubs to test the effect of sponsorship for a sponsor brand of a deal that includes a longtime sponsored football club and its rival as a newly sponsored one. It is also one of the first attempts that explores relationships between perceptions of fit, sense of betrayal and rejection of a joint sport sponsorship in a rivalry context, highlighting the importance of preventing fans' betrayal.

The manuscript aims to introduce the managerial practice of content recycling – that is, a firm's recycling of its posts on social media platforms. I define and distinguish the phenomenon from related ones and offer propositions for future research to test empirically.

Review of the practitioner literature, in-situ observations with content managers, and a survey of content managers and Facebook users.

Managers recycle their posts to recoup the costs of content. Under some conditions, recycled content may yield more benefits than costs.

I define the phenomenon of content recycling and differentiate it from related terms. I offer propositions for future research.

I inform managers of the benefits and costs of recycling content and conditions under which benefits may override costs.

The research is novel and helps develop a common managerial practice.

Social virtual reality (SVR) has emerged as a solution for the facilitation of remote and distributed teamwork, promising to overcome challenges faced in virtual 2D communication channels. The purpose of this study is to systematically review empirical articles dealing with the application of SVR with head-mounted displays (HMDs) in teams.

This study reviewed 40 empirical papers on teamwork that address the application of SVR using HMD in teams. The authors present results from the extracted data and identify themes that indicate the current state of research in this field.

Based on data obtained from the journal articles, the authors identified three themes underlying current research. They are features and applications of SVR technology, collaboration dynamics and team performance in SVR and educational and professional training and learning. The results show that SVR enhances team collaboration and collaborative learning.

SVR can aid in improving teamwork and team outcomes. In its current stage, SVR is complementary to 2D technology and not likely to replace traditional tools. Findings suggest that the technology is promising for collaboration and learning in organisations, especially in collaborative design tasks and simulations.

To the best of the authors’ knowledge, this paper is one of the first studies to look at research emerging from the nascent area of SVR and summarise the current state of research. This study provides managerial implications and identifies future research areas for SVR in teamwork and learning.

Increasing workforce diversity requires leadership to ensure employees retain their well-being. This study aims to examine how employees’ and managers’ co-creation of diversity in the workplace influences positive leadership (PL) style, which in turn affects employee well-being (EWB) positively.

Employees and managers of Australian businesses participated in a cross-sectional survey. EWB was regressed on PL style and diversity dimensions (DDs). Also, the mediation effect of PL style between DDs and EWB was tested.

Results suggest that Australian organisations appear to have more employee diversity with its partial impact on managers’ PL style, which then positively affects on employee well-being (EWB). Furthermore, the PL style partially mediated the relationship between DDs and EWB.

Managers will better understand workplace diversities and the key role that PL style can play in enhancing EWB.

This study will help improve employees' and managers' personal and social lives by developing a better understanding of health and well-being. It will have further economic impacts, such as higher organisational productivity.

This study fills the gap in the literature where PL style will positively affect EWB. Investigating the relationship between DDs, PL style and EWB using PERMA-profiler is a unique contribution.

The authors' research examines how negative electronic word-of-mouth (e-WOM) alters focal customers' post-recovery justice perceptions and attitudes to determine their future behavior with the service provider. Specifically, this paper develops and tests a conceptual model to investigate how negative e-WOM alters focal customers' perceptual and attitudinal outcomes after the service recovery experience. It also examines the post-recovery effect of negative e-WOM on focal customers’ willingness to patronize the service after their recovery experience.

To test the hypotheses, two pretests and two experimental studies with created scenarios in the retail context were conducted.

The authors' findings reveal that services are judged during and well beyond failure and recovery occurrences. To maintain a loyal customer base, service managers should develop processes that address service complaints both within and beyond the service consumption stage. The authors also find that despite a favorable recovery, focal customers gravitate toward the failure experience and develop unfavorable attitudes toward the service provider, leading to likely defections.

The authors' research demonstrates the persuasive power of negative e-WOM at the post-service recovery stage, making a unique contribution to the service recovery literature. This research also contributes to the persuasive effect of negative e-WOM, demonstrating message context as a boundary condition of negative e-WOM effects. In general, the authors' work highlights the importance of understanding the psychological processes involved in eliciting the persuasive influence of negative e-WOM in the post-service recovery stage that may lead to the defection of “so-called” successfully recovered customers.