Difficult doctor‒patient relationships are a common reality in many health-care organizations. Its harmful impacts have been mainly discussed from the perspectives of patients. However, understanding of its negative effects on physicians is limited. Drawing on the job demands-resources model and the conservation of resources theory, we hypothesize that difficult relationships with patients negatively predict physicians’ work engagement, mediated by physicians’ personal resources (e.g. prosocial motivation and problem-solving pondering). A sample of 588 physicians from 24 Chinese hospitals completed questionnaires in a two-wave survey. Structural equation modeling and bootstrap estimation results provide support for the hypothesized relationships. Difficult doctor‒patient relationships have a direct and negative effect on physicians’ work engagement. Specifically, there is a sequence in which the difficult doctor‒patient relationship first impedes physicians’ prosocial motivation, leading to decreased problem-solving pondering, which subsequently impairs physicians’ work engagement. Theoretical and practical implications of these findings are discussed.
We investigated the impact of positive group affective tone on employee work engagement. Participants in the study were 74 research and development groups (324 employees and 74 group leaders) employed by high-technology companies in China. Hierarchical linear modeling results revealed a positive cross-level relationship between positive group affective tone and employee work engagement; this relationship was partially mediated by employee core self-evaluation. In addition, there was a positive relationship between leader psychological capital and positive group affective tone at the group level. We further found that leader psychological capital was a moderator between employee core self-evaluation and their work engagement, such that the positive association was stronger when leader psychological capital was high than when it was low. Implications for organizational and individual change are described, and recommendations for future research directions are discussed.
PurposeThe effects of fatigue load level and plate thickness on the fatigue performance of reinforced concrete T-beam bridges.Design/methodology/approachFatigue load tests were performed based on the fatigue damage theory of reinforced concrete, combined with finite element model analysis. The other conditions are controlled separately, and the fatigue performance of the T-beam bridge carriageway slab under different fatigue load levels and different plate thicknesses is studied.FindingsThe fatigue process of the carriageway slab of a reinforced concrete T-beam bridge is divided into three stages: fatigue damage generation, fatigue damage development and fatigue failure. Under certain other conditions, as the fatigue load level increases, the fatigue damage of the carriageway slab accelerates; as the thickness of the carriageway slab increases, the fatigue resistance of the carriageway slab improves.Research limitations/implicationsTests and simulations have been carried out, but have not been applied to actual engineering for the time being.Practical implicationsIncreasing the thickness of the carriageway slab in actual engineering is conducive to improving the fatigue performance of the bridge, and heavy-duty traffic has a greater impact on the durability of the bridge.Social implicationsIt has certain reference value for bridge design, inspection and subsequent maintenance and reinforcement.Originality/valueThe originality of this article lies in designing and carrying out static and cyclic load tests separately, while introducing material damage models based on a large number of references and combining finite element analysis to consider the impact of a specific factor on fatigue performance. The test and analysis results can provide reference for bridge design and inspection.
In this paper, the rib beam bridge slabs were taken as the research object. Static load and fatigue tests were carried out on the benchmark bridge slabs to determine the ultimate load capacity and fatigue life of the bridge slabs. Then, the bridge slab was pre-damaged and reinforced with polyurethane concrete. A fatigue test was carried out on the reinforced bridge slab to study the fatigue performance. Based on the damage theory, the fatigue damage reinforcement finite element models of the bridge slabs under different damage degrees were established. The fatigue performance of the reinforced bridge slabs was systematically studied. The results show that the fatigue damage of the reinforced bridge slab developed in stages. Compared to the unreinforced bridge slab, the fatigue damage of the reinforced bridge slab was significantly reduced at each stage. According to the least square method and numerical analysis results, a residual-bearing-capacity model including damage degree and fatigue cycles of the reinforced bridge slabs is proposed, which can be used as a reference in bridge slab reinforcement design.
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