Yi Liu, Meng Joo Er and Chen Guo
The purpose of this paper is to propose an efficient path and trajectory planning method to solve online robotic multipoint assembly.
Abstract
Purpose
The purpose of this paper is to propose an efficient path and trajectory planning method to solve online robotic multipoint assembly.
Design/methodology/approach
A path planning algorithm called policy memorized adaptive dynamic programming (PM-ADP) combines with a trajectory planning algorithm called adaptive elite genetic algorithm (AEGA) for online time-optimal path and trajectory planning.
Findings
Experimental results and comparative study show that the PM-ADP is more efficient and accurate than traditional algorithms in a smaller assembly task. Under the shortest assembly path, AEGA is used to plan the time-optimal trajectories of the robot and be more efficient than GA.
Practical implications
The proposed method builds a new online and efficient path planning arithmetic to cope with the uncertain and dynamic nature of the multipoint assembly path in the Cartesian space. Moreover, the optimized trajectories of the joints can make the movement of the robot continuously and efficiently.
Originality/value
The proposed method is a combination of time-optimal path planning with trajectory planning. The traveling salesman problem model of assembly path is established to transfer the assembly process into a Markov decision process (MDP). A new dynamic programming (DP) algorithm, termed PM-ADP, which combines the memorized policy and adaptivity, is developed to optimize the shortest assembly path. GA is improved, termed AEGA, which is used for online time-optimal trajectory planning in joints space.
Details
Keywords
This purpose of this paper is to provide an overview of the theoretical background and applications of inverse reinforcement learning (IRL).
Abstract
Purpose
This purpose of this paper is to provide an overview of the theoretical background and applications of inverse reinforcement learning (IRL).
Design/methodology/approach
Reinforcement learning (RL) techniques provide a powerful solution for sequential decision making problems under uncertainty. RL uses an agent equipped with a reward function to find a policy through interactions with a dynamic environment. However, one major assumption of existing RL algorithms is that reward function, the most succinct representation of the designer's intention, needs to be provided beforehand. In practice, the reward function can be very hard to specify and exhaustive to tune for large and complex problems, and this inspires the development of IRL, an extension of RL, which directly tackles this problem by learning the reward function through expert demonstrations. In this paper, the original IRL algorithms and its close variants, as well as their recent advances are reviewed and compared.
Findings
This paper can serve as an introduction guide of fundamental theory and developments, as well as the applications of IRL.
Originality/value
This paper surveys the theories and applications of IRL, which is the latest development of RL and has not been done so far.
Details
Keywords
Meng Wang, Azmawani Abd Rahman, Yuhanis Abdul Aziz and Nor Azura Adzharuddin
The distinct characteristics of slow tourism compared to mass tourism determine the differences between slow travelers and mass travelers. This transformation is essential for…
Abstract
Purpose
The distinct characteristics of slow tourism compared to mass tourism determine the differences between slow travelers and mass travelers. This transformation is essential for potential tourists to transition into slow travelers when promoting slow tourism to them. Can travel vlogs, a “fast” way of promoting, achieve such a “slow” transformation? To address this question, the purpose of this paper is to introduce the resonance theory and investigate the impact of resonance with slow tourism vlogs on potential travelers’ destination image and travel intention.
Design/methodology/approach
Through the distribution of online questionnaires on site, this study collected a total of 349 valid questionnaires. Subsequently, the researcher used partial least squares structural equation modeling to analyze the data and test the hypotheses.
Findings
The research findings indicate that cognitive resonance only positively affected cognitive image, while emotional resonance was positively associated with both cognitive image and affective image. In addition, it was observed that cognitive image and affective image played a positive mediating role between resonance with slow tourism vlogs and travel intention.
Originality/value
This research is pioneering in quantitatively validating the structure linking resonance, destination image and travel intention in the context of slow tourism. By validating the second-order structure of cognitive and emotional resonance, this study underscores the crucial role of resonance in shaping tourists’ transition toward a slow mindset in slow tourism.
Details
Keywords
This study aims to propose a two-element multi-input-multi-output (MIMO) antenna for cognitive radio MIMO applications to avoid the complexities involved in reconfigurable…
Abstract
Purpose
This study aims to propose a two-element multi-input-multi-output (MIMO) antenna for cognitive radio MIMO applications to avoid the complexities involved in reconfigurable antennas and improve the spectrum utilization efficiency.
Design/methodology/approach
The proposed MIMO antenna system comprises a wideband antenna that operates at 2 GHz–12 GHz for sensing the spectrum and four pairs of antennas for communication, which are single and dual-band antennas. Each pair of antennas meant for communication consists of two similar antennas. Moreover, the antennas meant for communication cover 93% of the bandwidth of the sensing antenna.
Findings
The first pair of antennas accessible at ports P2 and P6 and the second pair of antennas accessible at ports P4 and P8, which are dual-band antennas, operate at 3.05 GHz–3.85 GHz, 5.8 GHz–8 GHz and 2.05 GHz–2.55 GHz, 4.7 GHz–6.1 GHz, respectively. While the third pair of antennas accessible at ports P3 and P7 and the fourth pair of antennas accessible at ports P5 and P9 are single-band antennas and operate at 3.85 GHz–4.7 GHz and 8 GHz–11 GHz, respectively. Minimum isolations of 20 dB and 15 dB are attained between every two similar antennas for communication and between the sensing antenna and the antennas meant for communication, respectively. The correctness of the proposed antenna is verified with a fine match between the results obtained from simulations and measurements.
Originality/value
The proposed MIMO antenna possesses salient features, such as polarization diversity and performing a maximum of four communication tasks when all the white spaces are detected.
Details
Keywords
Sze Ling Ng, Sajad Rezaei, Naser Valaei and Mohammad Iranmanesh
The objective of this study is to examine the drivers of retail apps satisfaction and continuance intention. An integrative theoretical framework was developed based on the IS…
Abstract
Purpose
The objective of this study is to examine the drivers of retail apps satisfaction and continuance intention. An integrative theoretical framework was developed based on the IS success model, E-S-QUAL and expectancy and disconfirmation model to explain retail apps users’ satisfaction and continuance intention.
Design/methodology/approach
A total of 359 useable data were collected from the targeted Malaysian respondents who had experience in using retail apps services. Data were analysed using the partial least squares technique.
Findings
The results indicate that system quality and e-service quality positively influence retail apps usage satisfaction and have positive direct and indirect effects through satisfaction on continuance intention. The price level has a negative effect on retail apps usage satisfaction. Even though price level has no direct effect on continuance intention to use retail apps, it has an indirect effect on continuance intention through satisfaction.
Originality/value
Although the success of a marketing channel mainly depends on its continuance usage rather than first-time usage, few studies have paid attention to retail apps services. This study contributes to the advancement of knowledge on retail apps by explaining the roles of system quality, e-service quality and price level on retail apps satisfaction and continuance intention. Interestingly, the findings of multi-group analysis imply that female Gen Y app users are more satisfied than males while such differences do not impact their continuance intention to use the retail apps. The findings also suggested that frequency of using apps has no relevance to retail apps user satisfaction, but highly relevant to their continuance intention to use retail Apps services.
Details
Keywords
Puja Khatri, Preeti Kumari and Asha Thomas
The significant role of universities in generating and diffusing new knowledge in the interest of society has positioned faculty as knowledge creators. The present study…
Abstract
Purpose
The significant role of universities in generating and diffusing new knowledge in the interest of society has positioned faculty as knowledge creators. The present study contributes to the domain of positive psychology by heeding the happiness call in academia. The research intends to develop and validate a scale for measuring happiness at work (HAW) for knowledge creators.
Design/methodology/approach
The study is systematically designed across a series of four independent studies: (1) Dimensionality and item analysis, (2) scale purification, (3) scale refinement and nomological validation and (4) generalizability. Additionally, common method bias (CMB) was checked utilizing the marker variable technique.
Findings
HAW has been established as a second-order reflective-reflective construct with six factors, namely work satisfaction, self-directedness, self-love, positive thinking, positive social relationships and work-family balance. The nomological validity and generalizability of the scale have also been established.
Research limitations/implications
The study is an attempt to address an important topic of HAW among knowledge creators. By conceptualizing HAW as a combination of intraindividual and organizational factors, this study offers a comprehensive measure of HAW that was previously absent in the literature. The results of the study will assist management in making strategic decisions to ensure the HAW of knowledge creators.
Originality/value
Knowledge creators’ happiness is a major concern in academia and has received little attention till date. The primary contribution of this study is the conceptualization and development of a validated scale for measuring knowledge creators’ HAW. A valid and reliable scale for measuring HAW would enable researchers to gain fresh perspectives on the essence, attributes and quantification of this particularly noteworthy construct.
Details
Keywords
Seon Mi Kim, Bok Gyo Jeong and Hyungsik Eum
This study aims to explore the alignment between platform cooperatives (co-ops) and cooperative principles, with a focus on worker co-op activists’ perceptions and the challenges…
Abstract
Purpose
This study aims to explore the alignment between platform cooperatives (co-ops) and cooperative principles, with a focus on worker co-op activists’ perceptions and the challenges faced by domestic service co-ops in South Korea.
Design/methodology/approach
A multiple-case study approach was used to examine two major worker co-ops in South Korea’s domestic service sector: the National House Managers’ Association (NHMA) and Life Magic Care Co-op (LMCC).
Findings
This study reveals contrasting perspectives between NHMA and LMCC on integrating platform co-ops with cooperative principles. While NHMA raises concerns about deteriorating working conditions and a diminished sense of community, LMCC’s experience suggests that a well-designed, worker-owned platform can address these issues. However, NHMA’s concerns about the loss of a sense of community and funding challenges remain valid in LMCC’s experience, raising fundamental questions about the cohesion of platform co-ops in maintaining cooperative values. Establishing a sustainable funding mechanism, especially for platform maintenance and marketing, is crucial. Co-op communities must recognize the challenges platform co-ops face in balancing scalability with active member participation and community cohesion and develop strategies to address these issues before launching platform co-ops.
Originality/value
This study highlights the unique challenges of implementing platform technology in domestic worker co-ops and emphasizes the need for innovative strategies to ensure alignment with cooperative values. The research provides key insights for co-ops considering platform adoption, especially in sectors where trust and personal relationships are vital.
Details
Keywords
Milagros Isabel Rivas Mendoza, Asghar Afshar Jahanshahi, Luis Alexander Pulido Joo, Mohammad Rashed Hasan Polas, Luis Antonio Paredes Izaguirre and Luis Fernando Espejo-Chacón
This study explores social entrepreneurship as a viable career path for employees facing hostile workplace conditions in Peru. It examines the gender-specific effects of workplace…
Abstract
Purpose
This study explores social entrepreneurship as a viable career path for employees facing hostile workplace conditions in Peru. It examines the gender-specific effects of workplace challenges such as hostility, discrimination and sexual harassment on individuals’ aspirations for career transitions and entrepreneurship.
Design/methodology/approach
A cross-sectional survey was conducted with 450 Peruvian workers experiencing adverse workplace conditions. Quantitative data analysis was used to evaluate the relationship between perceived workplace challenges, intentions to leave current jobs and the propensity to pursue social entrepreneurship. Gender differences were analyzed to uncover unique patterns in these relationships.
Findings
Results reveal significant gender differences: females report higher levels of discrimination, while males report higher perceptions of workplace harassment. Females intending to leave their jobs demonstrated a stronger inclination toward social entrepreneurship compared to their male counterparts. These findings underline the detrimental impact of hostile work environments on employee aspirations and highlight social entrepreneurship as a meaningful career option for individuals seeking to address societal issues.
Practical implications
This research offers valuable insights for organizations and policymakers, emphasizing the importance of creating equitable work environments. It also underscores the potential of social entrepreneurship to empower individuals disillusioned by conventional workplace structures to drive positive social change.
Originality/value
By elucidating the role of social entrepreneurship as an alternative career path, our study contributes to the growing body of literature on entrepreneurship and social impact, offering valuable insights for both researchers and practitioners aiming to foster more equitable and empowering work environments.
Details
Keywords
Sumi Lee and Seung-hyun (Caleb) Han
This study, grounded in social exchange theory, aims to explore the relationship between knowledge sharing and organizational sustainability, with a particular focus on the dual…
Abstract
Purpose
This study, grounded in social exchange theory, aims to explore the relationship between knowledge sharing and organizational sustainability, with a particular focus on the dual mediating roles of job-related psychological factors, specifically job engagement and meaningful work.
Design/methodology/approach
Data were collected from 373 employees across six large companies in South Korea. The study then used Model 6 of Hayes’ PROCESS hierarchical regression of SPSS 29 for hypothesis testing.
Findings
The study reveals a strong connection between knowledge sharing and its positive influence on employee job engagement and the perception of meaningful work, both of which play essential mediating roles in promoting organizational sustainability. The findings emphasize the critical importance of knowledge sharing in driving sustainability efforts, showing how the interplay between job engagement and meaningful work significantly enhances these outcomes.
Originality/value
This research contributes to social exchange theory by demonstrating the dual mediating roles of job engagement and meaningful work between knowledge sharing and sustainability.