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Article
Publication date: 17 October 2019

Yiran Zhao, Xingchao Wang, Chen Chen and Kan Shi

Ostracism within organizations may pose communication challenges and reduce opportunities for interactions, potentially affecting coworker knowledge sharing and subsequent…

Abstract

Purpose

Ostracism within organizations may pose communication challenges and reduce opportunities for interactions, potentially affecting coworker knowledge sharing and subsequent performance outcomes. Drawing on conservation of resources theory, the purpose of this paper is to examine whether knowledge sharing mediates the association between workplace ostracism and employees’ task performance, and whether the mediating effect is moderated by task interdependence.

Design/methodology/approach

Matched data were collected from a two-wave survey among 210 employees and their direct supervisors who work in two Chinese enterprises.

Findings

Results indicate that workplace ostracism is negatively associated with task performance and that knowledge sharing mediates this relation. Further, task interdependence exacerbated the main effect of workplace ostracism and the indirect effect of knowledge sharing.

Originality/value

This paper offers an alternative perspective (i.e. pragmatic impacts of workplace ostracism) to understand how workplace ostracism undermines employees’ task performance. Moreover, the findings emphasize that contextual factors may strengthen the detrimental effects of workplace ostracism in the practical domain.

Details

Chinese Management Studies, vol. 14 no. 1
Type: Research Article
ISSN: 1750-614X

Keywords

Article
Publication date: 20 June 2019

Huijin Xu, Yan Wang and Xingchao Han

Phase change energy storage is an important solution for overcoming human energy crisis. This study aims to present an evaluation for the thermal performances of a phase change…

Abstract

Purpose

Phase change energy storage is an important solution for overcoming human energy crisis. This study aims to present an evaluation for the thermal performances of a phase change material (PCM) and a PCM–metal foam composite. Effects of pore size, pore density, thermal conductivity of solid structure and mushy region on the thermal storage process are examined.

Design/methodology/approach

In this paper, temperature, flow field and solid–liquid interface of a PCM with or without porous media were theoretically assessed. The influences of basic parameters on the melting process were analyzed. A PCM thermal storage device with a metal foam composite is designed and a thermodynamic analysis for it is conducted. The optimal PCM temperature and the optimal HTF temperature in the metal foam-enhanced thermal storage device are derived.

Findings

The results show that the solid–liquid interface of pure PCM is a line area and that of the mixture PCM is a mushy area. The natural convection in the melting liquid is intensive for a PCM without porous medium. The porous medium weakens the natural convection and makes the temperature field, flow field and solid–liquid interface distribution more homogeneous. The metal foam can greatly improve the heat storage rate of a PCM.

Originality/value

Thermal storage rate of a PCM is compared with that of a PCM–metal foam composite. A thermal analysis is performed on the multi-layered parallel-plate thermal storage device with a PCM embedded in a highly conductive porous medium, and an optimal melting temperature is obtained with the exergy optimization. The heat transfer enhancement with metal foams proved to be necessary for the thermal storage application.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 1
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 22 March 2021

Z.B. Xing, Xingchao Han, Hanbing Ke, Q.G. Zhang, Zhiping Zhang, Huijin Xu and Fuqiang Wang

A combination of highly conductive porous media and nanofluids is an efficient way for improving thermal performance of relevant applications. For precisely predicting the flow…

Abstract

Purpose

A combination of highly conductive porous media and nanofluids is an efficient way for improving thermal performance of relevant applications. For precisely predicting the flow and thermal transport of nanofluids in porous media, the purpose of this paper is to explore the inter-phase coupling numerical methods.

Design/methodology/approach

Based on the lattice Boltzmann (LB) method, this study combines the convective flow, non-equilibrium thermal transport and phase interactions of nanofluids in porous matrix and proposes a new multi-phase LB model. The micro-scale momentum and heat interactions are especially analyzed for nanoparticles, base fluid and solid matrix. A set of three-phase LB equations for the flow/thermal coupling of base fluid, nanoparticles and solid matrix is established.

Findings

Distributions of nanoparticles, velocities for nanoparticles and the base fluid, temperatures for three phases and interaction forces are analyzed in detail. Influences of parameters on the nanofluid convection in the porous matrix are examined. Thermal resistance of nanofluid convective transport in porous structures are comprehensively discussed with the models of multi-phases. Results show that the Rayleigh number and the Darcy number have significant influences on the convective characteristics. The result with the three-phase model is mildly larger than that with the local thermal non-equilibrium model.

Originality/value

This paper first creates the multi-phase theoretical model for the complex coupling process of nanofluids in porous structures, which is useful for researchers and technicians in fields of thermal science and computational fluid dynamics.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 8
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 8 August 2016

Bo Yan, Chang Yan, Chenxu Ke and Xingchao Tan

The Internet of Things (IoT) is one of the efficient ways to solve the problems on information sharing in the supply chain of agricultural products. The paper aims to discuss this…

3699

Abstract

Purpose

The Internet of Things (IoT) is one of the efficient ways to solve the problems on information sharing in the supply chain of agricultural products. The paper aims to discuss this issue.

Design/methodology/approach

In this paper, a scheme of information sharing in the supply chain of agricultural products is developed and the information of agricultural products is designed and described with Physical Markup Language.

Findings

In addition, the EPC Information Services (EPCIS) system of agricultural products is analyzed and designed, and the design of tracking and tracing of the agricultural supply chain based on the IoT is proposed. Meanwhile, EPCDS registration is discussed, and two methods of information inquiry are proposed, especially the processes of inquiries for the static and dynamic information based on Object Name Service are emphasized.

Originality/value

Once a food safety incident occurs, the model can be used for tracking, tracing, and monitoring so as to deal with related products and strengthen the quality and safety management of agricultural products.

Details

Industrial Management & Data Systems, vol. 116 no. 7
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 21 June 2021

Rômulo Marcos Lardosa Rebelo, Susana Carla Farias Pereira and Maciel M. Queiroz

This study aims to identify and analyze how Internet of things (IoT) technology affects supply chain management (SCM) performance.

3353

Abstract

Purpose

This study aims to identify and analyze how Internet of things (IoT) technology affects supply chain management (SCM) performance.

Design/methodology/approach

A systematic literature review was conducted (using Scopus, JSTOR, Emerald, ProQuest, Science Direct and Web of Science) covering a 20-year timeframe (2000–2020). Out of 2,572 papers identified, 171 peer-reviewed papers from the most important journals were selected. Content analysis was used following the Global Supply Chain Forum (GSCF) SCM framework.

Findings

Regarding the GSCF SCM framework processes, most IoT-based studies have addressed improving order fulfilment, manufacturing flow management and demand management processes. However, no studies addressing the Supplier relationship management process were identified, suggesting that IoT-based applications are perceived to add more value in downstream than upstream SCM processes. The importance of using enabling technologies to realize the potential of value generation of IoT was also revealed. Findings suggest new research avenues related to product development and commercialization process, the supplier relationship management process, the returns management process, servitization strategies, new SCM models and new business models.

Research limitations/implications

The review encompasses only academic papers from journals considered the most relevant (retrieved from specific databases), using the impact factor as the quality criterion.

Practical implications

The findings can help business managers better understand the potential of IoT technology, such as the main applications identified in the literature and their impacts on SCM processes. Their importance in enabling technologies to leverage SCM performance is identified and the emerging SCM models/business models that IoT deployment can enable are highlighted.

Originality/value

This study contributes to filling a gap in the literature using a systematic literature review of how IoT technology affects SCM performance through content analysis, using an SCM framework to clarify which SCM processes are affected. Academic articles from the most important journals from 2000 to 2020 are identified.

Details

Benchmarking: An International Journal, vol. 29 no. 2
Type: Research Article
ISSN: 1463-5771

Keywords

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