Search results

1 – 4 of 4
Article
Publication date: 29 January 2021

Hongwei Zhu, Zhiqiang Lu, Chenyao Lu and Yifei Ren

To meet the requirement of establishing an effective schedule for the assembly process with overall detection and rework, this paper aims to address a new problem named…

Abstract

Purpose

To meet the requirement of establishing an effective schedule for the assembly process with overall detection and rework, this paper aims to address a new problem named resource-constrained multi-project scheduling problem based on detection and rework (RCMPSP-DR).

Design/methodology/approach

First, to satisfy both online and offline scheduling, a mixed integer programming model is established with a weighted bi-objective minimizing the expected makespan and the solution robustness. Second, an algorithm that combines a tabu search framework with a critical chain-based baseline generation scheme is designed. The tabu search framework focuses on searching for a reasonable resource flow representing the execution sequence of activities, while the critical chain-based baseline generation scheme establishes a buffered baseline schedule by estimating the tradeoff between two aspects of bi-objective.

Findings

The proposed algorithm can get solutions with gaps from −4.45% to 2.33% when compared with those obtained by the commercial MIP solver CPLEX. Moreover, the algorithm outperforms four other algorithms in terms of both objective performance and stability over instances with different weighting parameters, which reveals its effectiveness.

Originality/value

The represented RCMPSP-DR considering the overall detection and rework is an extension of the scheduling problem for large-scale equipment. An effective algorithm is proposed to establish the baseline schedule and determine the execution sequence of activities for the assembly process, which is significant for practical engineering applications.

Details

Assembly Automation, vol. 41 no. 2
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 25 July 2019

Yifei Ren and Zhiqiang Lu

In response to the station design and flexible resources allocation of the aircraft moving assembly line, a new problem named flexible resource investment problem based on…

Abstract

Purpose

In response to the station design and flexible resources allocation of the aircraft moving assembly line, a new problem named flexible resource investment problem based on project splitting (FRIP_PS), which minimizes total cost of resources with a given deadline are proposed in this paper.

Design/methodology/approach

First, a corresponding mathematical model considering project splitting is constructed, which needs to be simultaneously determined together with job scheduling to acquire the optimized project scheduling scheme and resource configurations. Then, an integrated nested optimization algorithm including project splitting policy and job scheduling policy is designed in this paper. In the first stage of the algorithm, a heuristic algorithm designed to get the project splitting scheme and then in the second stage a genetic algorithm with local prospective scheduling strategy is adopted to solve the flexible resource investment problem.

Findings

The heuristic algorithm of project splitting gets better project splitting results through the job shift selection strategy and meanwhile guides the algorithm of the second stage. Furthermore, the genetic algorithm solves resources allocation and job schedule through evaluation rules which can effectively solve the delayed execution of jobs because of improper allocation of flexible resources.

Originality/value

This paper represents a new extension of the resource investment problem based on aircraft moving assembly line. An effective integrated nested optimization algorithm is proposed to specify station splitting scheme, job scheduling scheme and resources allocation in the assembly lines, which is significant for practical engineering applications.

Details

Assembly Automation, vol. 39 no. 4
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 22 October 2020

Xuanya Shi, Francis Boadu and Yifei Du

Both the scope of postentry growth and the scale of postentry growth are essential for Chinese multinational enterprises' aggressive internationalization. Yet, prior…

Abstract

Purpose

Both the scope of postentry growth and the scale of postentry growth are essential for Chinese multinational enterprises' aggressive internationalization. Yet, prior literature has not considered the synergistic approach of postentry growth that seeks the scope of growth and the scale of growth simultaneously. Building upon the embeddedness perspective and the learning view, we address how structural embeddedness directly affects firms' postentry growth in the form of scope and scale and indirectly affects postentry growth via both the scope of growth and the scale of growth. Particularly, we investigate the decreasing mediating effect of the growth's scale on the growth's scope when embeddedness strengthens.

Design/methodology/approach

With a survey data set of 206 Chinese multinational firms from manufacturing and service industries, we conduct structural equation modeling (SEM), partial least squares path modeling (PLS-PM), instantaneous indirect effect assessment and hierarchical linear regression model to test our hypotheses.

Findings

First, Chinese multinational enterprises’ (CMNEs) structural embeddedness is positively related to their scope of postentry growth, while has a U-shaped relationship with their scale of postentry growth. Second, CMNEs' scope of postentry growth mediates the relationship between structural embeddedness and the scale of postentry growth, the mediation effect counts for 33.5% of the over effect. Finally, the indirect effect of structural embeddedness on the scope of postentry growth through the scale of postentry growth is nonlinear. As the structural embeddedness strengthens, the positive indirect effect gradually weakens.

Originality/value

We believe this study further connects core international business research on postentry growth to the fast-growing literature on emerging markets multinational enterprises' internationalization. In addition, we undertake an initial effort in addressing an important gap in the literature: how structural embeddedness matters to firms' postentry growth. Moreover, this study finds important evidence to support the direct and indirect effect of structural embeddedness on postentry growth.

Details

Cross Cultural & Strategic Management, vol. 28 no. 2
Type: Research Article
ISSN: 2059-5794

Keywords

Book part
Publication date: 18 August 2022

Florence Padovani

This chapter seeks to analyse neighbouring in times of rapid change in the Chinese metropolis of Shanghai. Using the local neighbourhood of Tianzifang as a case study…

Abstract

This chapter seeks to analyse neighbouring in times of rapid change in the Chinese metropolis of Shanghai. Using the local neighbourhood of Tianzifang as a case study, this chapter shows how the pace of change in Shanghai since the 1950s has reshaped the social fabric of the area, including traditional neighbour relations. As Tianzifang has shifted from an unknown neighbourhood comprised of traditional lilong dwellings, where social relations played out in private communal settings, to one of Shanghai’s most famous tourist spots, the relationships between residents, as well as with ‘outsiders’ and the familiar local environment, have also changed. Traditional neighbourly ties have been broken, rebuilt and transformed again through waves of new residents coming into the area and the displacement of others who can no longer afford to live there. For those who remain, the question of who is, and thus who is not, a ‘real’ neighbour has been narrowed to include only ‘insiders’ with a deep sense of belonging and connection to the area – i.e. the urban working class who have always lived in Tianzifang and own rather than rent their homes. Yet even this is no longer sufficient. The disruption that Tianzifang’s physical and social transformation has brought to residents’ lives has also imposed new social norms about how neighbours should behave in this new, intermediary space of public and private. ‘Real’ neighbours are those who conform to changing social norms while neighbours who breach them can be ostracised and excluded by others who once saw them as an insider.

Details

Neighbours Around the World: An International Look at the People Next Door
Type: Book
ISBN: 978-1-80043-370-0

Keywords

1 – 4 of 4