Search results

The purpose of this paper is to explore the curvilinear relationship between workplace ostracism (supervisor ostracism and co-worker ostracism) and knowledge hoarding by using the conservation of resources theory. In addition, the paper predicts one possible situational context (political skill) that may influence employees’ reaction to ostracism.

Using a two-wave research design, the authors collected data from 240 samples in a Chinese diversified company. Hierarchical regression models were used to test the hypotheses.

The authors found that the relationship between workplace ostracism (supervisor ostracism and co-worker ostracism) and knowledge hoarding was U-shaped. Moreover, political skill moderated the linkage between workplace ostracism and knowledge hoarding such that the U-shaped association was stronger for people higher, rather than lower, in political skill.

By exploring a curvilinear relationship between ostracism and knowledge hoarding, the study enriches the knowledge hoarding literature by adding a substantive predictor of knowledge hoarding. The findings can also extend the workplace ostracism literature by providing a new conceptual analysis of interpreting the inconsistent findings involving the influence of workplace ostracism. Moreover, identifying political skill as a moderator can gain a better understanding of when and why an ostracized employee’s knowledge hoarding behavior can be less likely.

The fuzziness and complexity of evaluation information are common phenomenon in practical decision-making problem, interval neutrosophic sets (INSs) is a power tool to deal with ambiguous information. Similarity measure plays an important role in judging the degree between ideal and each alternative in decision-making process, the purpose of this paper is to establish a multi-criteria decision-making method based on similarity measure under INSs.

Based on an extension of existing cosine similarity, this paper first introduces an improved cosine similarity measure between interval neutosophic numbers, which considers the degrees of the truth membership, the indeterminacy membership and the falsity membership of the evaluation values. And then a multi-criteria decision-making method is established based on the improved cosine similarity measure, in which the ordered weighted averaging (OWA) is adopted to aggregate the neutrosophic information related to each alternative. Finally, an example on supplier selection is given to illustrate the feasibility and practicality of the presented decision-making method.

In the whole process of research and practice, it was realized that the application field of the proposed similarity measure theory still should be expanded, and the development of interval number theory is one of further research direction.

The main contributions of this paper are as follows: this study presents an improved cosine similarity measure under INSs, in which the weights of the three independent components of an interval number are taken into account; OWA are adopted to aggregate the neutrosophic information related to each alternative; and a multi-criteria decision-making method using the proposed similarity is developed under INSs.

The purpose of this paper is to investigate how voluntary citizenship behaviour towards an individual (VCB-I) is linked with vicious knowledge hiding (VKH), and why members, within a mastery climate, tend to participate in less VKH after their engaging in VCB-I. The authors, according to the moral licensing theory, propose that moral licensing mediates the relationship between VCB-I and VKH, and that a mastery climate weakens the hypothesised link via moral licensing.

This study surveys 455 valid matching samples of subordinates and supervisors from 77 working teams in China at two time points and explores the relationship between VCB and VKH, as well as the underlying mechanism. A confirmatory factor analysis, bootstrapping method and hierarchical linear model were used to validate the research hypotheses.

The results show that VCB-I has a significant positive effect on VKH; moral credentials play a mediating role in the relationship between VCB-I and VKH; and the mastery climate moderates the positive effect of moral credentials on VKH and the mediating effect of moral credentials. In a high-mastery climate, the direct effect of moral credentials on VKH and the indirect influence of VCB-I on VKH through moral credentials are both weakened, and conversely, both effects are enhanced in a low-mastery climate. However, contrary to the expected hypothesis, moral credits do not mediate the relationship between VCB-I and VKH, which may be due to the differences in the mechanisms between the two moral licensing models.

Prior research has mainly focused on the “victim-centric” perspective to examine the impacts of others’ behaviour on employees’ knowledge hiding. Few works have used the “actor-centric” perspective to analyse the relationship between employees’ prior workplace behaviour and their subsequent knowledge hiding intention. In addition, this study enriches the field research on the voluntary aspects of organisational citizenship behaviour, which differs from its involuntary ones.

The application of the traditional failure mode and effects analysis (FMEA) technique has been widely questioned in evaluation information, risk factor weights and robustness of results. This paper develops a novel FMEA framework with extended MULTIMOORA method under interval-valued Pythagorean fuzzy environment to solve these problems.

This paper introduces innovatively interval-value Pythagorean fuzzy weighted averaging (IVPFWA) operator, Tchebycheff metric distance and interval-value Pythagorean fuzzy weighted geometric (IVPFWG) operator into the MULTIMOORA submethods to obtain the risk ranking order for emergencies. Finally, an illustrative case is provided to demonstrate the practicality and feasibility of the novel fuzzy FMEA framework.

The feasibility and validity of the proposed method are verified by comparing with the existing methods. The calculation results indicate that the proposed method is more consistent with the actual situation of project and has more reference value.

The research results can provide supporting information for risk management decisions and offer decision-making basis for formulation of the follow-up emergency control and disposal scheme, which has certain guiding significance for the practical popularization and application of risk management strategies in the infrastructure projects.

A novel approach using FMEA with extended MULTIMOORA method is developed under IVPF environment, which considers weights of risk factors and experts. The method proposed has significantly improved the integrity of information in expert evaluation and the robustness of results.

This study aims to propose a more precise method for robust design optimization of mechanical structures with black-box problems, while also considering the efficiency of uncertainty analysis.

The method first introduces a dual adaptive chaotic flower pollination algorithm (DACFPA) to overcome the shortcomings of the original flower pollination algorithm (FPA), such as its susceptibility to poor accuracy and convergence efficiency when dealing with complex optimization problems. Furthermore, a DACFPA-Kriging model is developed by optimizing the relevant parameter of Kriging model via DACFPA. Finally, the dual Kriging model is constructed to improve the efficiency of uncertainty analysis, and a robust design optimization method based on DACFPA-Dual-Kriging is proposed.

The DACFPA outperforms the FPA, particle swarm optimization and gray wolf optimization algorithms in terms of solution accuracy, convergence speed and capacity to avoid local optimal solutions. Additionally, the DACFPA-Kriging model exhibits superior prediction accuracy and robustness contrasted with the original Kriging and FPA-Kriging. The proposed method for robust design optimization based on DACFPA-Dual-Kriging is applied to the motor hanger of the electric multiple units as an engineering case study, and the results confirm a significant reduction in the fluctuation of the maximum equivalent stress.

This study represents the initial attempt to enhance the prediction accuracy of the Kriging model using the improved FPA and to combine the dual Kriging model for uncertainty analysis, providing an idea for the robust optimization design of mechanical structure with black-box problem.

The purpose of this paper is to examine the curvilinear relationship between knowledge leadership and knowledge hiding and the moderating role of psychological ownership on influencing the curvilinear relationship.

In total, 403 data were collected from participants in a high-technology company via a two-wave survey. Hierarchical regression analyses were used to test the hypotheses.

Results revealed an inverted U-shaped relationship between knowledge leadership and knowledge hiding. The employees exhibited more knowledge hiding in a moderate level of knowledge leadership than in lower and higher levels of knowledge leadership. Moreover, psychological ownership significantly moderated the curvilinear relationship such that the inverted U-shaped relationship was more pronounced among employees with high psychological ownership.

Employees’ reaction to knowledge leadership may vary from different levels of knowledge leadership. Moreover, organizations should boost employees’ psychological ownership especially for the collective identity that helps them own knowledge as “ours.”

This study extends both the leadership and knowledge management behavior literatures.

To achieve sustainability for a construction project requires the achievement of economic, environmental and social sustainability at the same time. The economic sustainability of a project should be built into the stipulated cost. The unbalanced bidding always contribute cost overrun for a construction project. The purpose of this paper is to develop a method for identifying unbalanced bidding.

The problem of identifying unbalanced bidding is a comprehensive evaluation problem. All line items and bidders in bills of quantities are evaluation factors and evaluation objects, respectively, and the engineer’s estimated prices are considered as the evaluation benchmarks. The weights of these factors are determined through integrating the entropy weight method and the analytic hierarchy model, which consider subjective and objective factors in the weighting process.

The proposed model can be used to quantitatively evaluate unbalanced bids. The identification process can be analyzed within a short period, specifically with the aid of Microsoft Excel, reducing delays in awarding contracts. The results show that the model will support owners as they efficiently and effectively identify unbalanced bids in the bid evaluation stage to mitigate the negative consequences of unbalanced bidding.

A case study is given to verify the feasibility and practicability of the proposed method, which not only assists owners in efficiently and effectively identifying unbalanced bidding, but also promotes the economic sustainability of construction projects.

The fuzzy comprehensive evaluation method is used to detect unbalanced bidding, allowing owners to be objective as they identify and reduce unbalanced bidding at the procurement stage.

In recent years, with the increasingly serious urban water environmental pollution, the government has exerted considerable effort to promote the comprehensive improvement of the water environment and conducted numerous urban water environment treatment public–private partnership (PPP) projects (UWETP-PPP). The sustainability assessment of UWETP-PPP has important theoretical and practical significance for the public and private sectors to systematically evaluate the sustainability of projects and promote the sustainable development of projects. Therefore, the purpose of this paper is to advance a method to evaluate the sustainability of UWETP-PPP.

The paper adopted fuzzy logic method to evaluate the sustainability of UWETP-PPP. First, this paper constructed the sustainability assessment indicator system of UWETP-PPP. Second, this paper determined the appropriate linguistic scale for assessing the performance ratings and importance weights of UWETP-PPP sustainability indicators and collected experts’ evaluations of the project through questionnaires. Then, the linguistic variables were approximated as fuzzy numbers through the concept of fuzzy theory. Finally, the sustainability of the project was determined and the weak sustainability aspects of the project were identified by calculation.

The feasibility of this method was verified by a specific case. And, the results of the case study showed that the UWETP-PPP in Xuchang City, China, was sustainable, and the indicators of weak sustainability of the project were identified, namely, internal return ratio (IRR), sustainable cash flow, provision of employment opportunities, energy efficiency, comprehensive use of water resources, use of innovation materials, renewal of project facilities, adoption of advanced engineering technology, use of construction waste and waste recycling and reuse. This paper also proposed corresponding suggestions for further improving the sustainability of the UWETP-PPP in Xuchang City, China.

This paper makes two contributions: first, the fuzzy logic method is applied to provide new ideas for a sustainability assessment of UWETP-PPP, and the assessment results facilitate ways to monitor and estimate the degree of sustainability. Second, the identified indicators of weak sustainability provide useful references for the public and private sectors regarding implementing appropriate measures to improve the sustainability level of UWETP-PPP.

This study aims to research the influence of non-probabilistic design variables on interval robust optimization of electric multiple units (EMU) brake module, therefore obtain the reasonable of design variables of the EMU brake module.

A robust optimization model of the EMU brake module based on interval analysis is established. This model also considers the dimension tolerance of design variables, and it uses symmetric tolerance to describe the uncertainty of design variables. The interval order relation and possibility degree of interval number are employed to deal with the uncertainty of objective function and constraint condition, respectively. On this basis, a multiobjective robust optimization model in view of interval analysis is established and applied to the robust optimization of the EMU brake module.

Compared with the traditional method and the method proposed in the reference, the maximum stress fluctuation of the EMU brake module structure is smaller after using the method proposed in this paper, which indicates that the robustness of the maximum stress of the structure has been improved. In addition, the weight and strength of the structure meet the design requirements. It shows that this method and model introduced in this research have certain feasibility.

This study is the first attempt to apply the robust optimization model based on interval analysis to the optimization of EMU structure and obtain the optimal solution set that meets the design requirements. Therefore, this study provides an idea for nonprobabilistic robust optimization of the EMU structure.

This study aims to examine the moderating effects of psychological entitlement and perceived organizational support (POS) on the relationship between work connectivity behavior after-hours (WCBA) and job satisfaction.

Data were collected from 217 full-time employees of an Internet company in China at two points in time separated by about one month. Hierarchical regression and simple slope analyses were conducted to test hypotheses.

The results showed that WCBA was negatively related to job satisfaction and that this relationship could be mitigated by POS. Moreover, psychological entitlement aggravated this relationship, and this aggravating effect was stronger when POS was at low levels.

Managers should avoid intervening employees' nonwork domains too much. If this is unavoidable, managers should provide adequate organizational support to help employees cope with the challenges brought by WCBA. Besides, managers need to pay close attention to highly entitled employees and take measures to modify their expectations.

First, this study enriches the understanding of what WCBA is and how WCBA works by investigating the influencing mechanism of WCBA from the perspectives of effort–reward imbalance and job demands–resources. Second, by verifying the moderating effects of psychological entitlement and POS, this study provides insights into the boundaries of the WCBA–job satisfaction relationship. Third, this study contributes to the literature on psychological entitlement by identifying its one applicable condition.